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Problem in _asm

Cheat Engine Forum Index -> General programming

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NoMercy
Master Cheater

Reputation: 1

Joined: 09 Feb 2009
Posts: 289

Posted: Sun May 23, 2010 7:00 am Post subject: Problem in _asm

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Well, i tried to convert a script from AA to_Asm, it looks all fine to me, but it doesnt work

I debugged it many times in CE, but i can't fin it.

The CE script = working
http://pastebin.com/g3jkvMBF

My _asm script = NOT working
http://pastebin.com/eLfgpgZx

To me, they both look the same, but it's not. Could anyone help me out?

c++ _asm code

Code:

__declspec(naked) void __stdcall DupexASM()
{
__asm
{
      pushfd
      push eax
      push ecx
      mov eax,[Pointers::CharPid]
      test eax,eax
      je [NullPlat]
      mov eax,[eax+0x1160]
      lea ecx,[eax-0x0c]
      test ecx,ecx
      je [NullPlat]
      mov eax,[ecx+0x00000114]
      test eax,eax
      je [NullPlat]
      cmp [RunFlag],0x01
      je [DoVac]
      mov [Platform],eax
      inc [RunFlag]
      jmp [DoVac]

      DoVac:
      cmp esi,ecx
      je [Normal]
      mov edi,[Platform]
      jmp [Normal]

      NullPlat:
      mov [Platform],0x00
      mov [RunFlag],0x00
      jmp [Normal]

      Normal:
      pop ecx
      pop eax
      popfd
      mov [esi+0x00000114],edi
      //jmp [dwDupexRet]
      push dwDupexRet
      ret
   }
}

this is how i call it.

Code:

void DupexFunc()
{
DWORD DupexPro;
VirtualProtect((LPVOID)dwDupex, 0x20, PAGE_EXECUTE_READWRITE, &DupexPro);

*(BYTE*)dwDupex = 0xE9;
*(DWORD*)(dwDupex + 1) = jmp(dwDupex, DupexASM);
*(BYTE*)(dwDupex + 5) = 0x90;
}

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sponge
I'm a spammer

Reputation: 1

Joined: 07 Nov 2006
Posts: 6009

Posted: Sun May 23, 2010 11:26 am Post subject: Re: Problem in _asm

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Code:

mov eax,[Pointers::CharPid]

Bad.

Code:

je [NullPlat]
jmp [DoVac]
jmp [Normal]

wat... i don't even... You're lucky the compiler knows you're jumping to a label instead of the value at that label.

Generalizing, your code is disgusting.
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NoMercy
Master Cheater

Reputation: 1

Joined: 09 Feb 2009
Posts: 289

Posted: Sun May 23, 2010 1:24 pm Post subject: Re: Problem in _asm

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sponge wrote:

Code:

mov eax,[Pointers::CharPid]

Bad.

Code:

je [NullPlat]
jmp [DoVac]
jmp [Normal]

wat... i don't even... You're lucky the compiler knows you're jumping to a label instead of the value at that label.

Generalizing, your code is disgusting.

well at the first thing you say: You sugest to hardcode it, with the adress?

Second point is that i tried everything to make it work, but it did not work.

But the main problem is, it doesnt work

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