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johndoe



Joined: 18 Jun 2005
Posts: 8
johndoe 08 Jul 2005, 12:08
im looking for some examples on new routines for this

xor maybe




Code:
asm
  push 012345678h               //LoadLibrary
  push 012345678h               //GetProcAddress
  push 012345678h               //Addr of MainData

  call @get_eip
  @get_eip:
  pop eax
  and eax,0FFFFF000h
  add [esp],eax
  add [esp+004h],eax
  add [esp+008h],eax

  call @DynLoader_begin


  pop edi
  pop esi
  pop ebp
  add esp,004h
  pop ebx
  pop edx
  add esp,008h

  mov [esp+004h],ecx

  jmp eax
 @DynLoader_begin:

  push ebp
  mov ebp,esp
  sub esp,00000200h

  push ebx
  push edi
  push esi

  and eax,0FFFF0000h

  mov [ebp-050h],eax

  mov ecx,00008000h
 @DynLoader_fake_loop:
  add eax,0AF631837h
  xor ebx,eax
  add bx,ax
  rol ebx,007h
  loop @DynLoader_fake_loop


  //----------------- FOR HERE


  push dword ptr [ebp+008h]
  dd DYN_LOADER_DEC_MAGIC
//END    
Post 08 Jul 2005, 12:08
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bogdanontanu



Joined: 07 Jan 2004
Posts: 403
Location: Sol. Earth. Europe. Romania. Bucuresti
bogdanontanu 08 Jul 2005, 20:21
As a word of advise: run the code in Ollydbg steep by steep...

Most hidden API calls and parameters will show up exactly as they are when the call is made Wink
Post 08 Jul 2005, 20:21
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