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[MASM32]AOBScan

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DoomsDay
Grandmaster Cheater

Reputation: 0

Joined: 06 Jan 2007
Posts: 768
Location: %HomePath%

Posted: Tue Sep 25, 2007 10:17 am Post subject: [MASM32]AOBScan

As people are sharing so much lately...

I wrote:

Returns the first array that matches.

Array - a pointer to the array
ArraySize - the length of the array
ScanBaseAddress - Scan's base address
ScanRange - How many bytes to scan
ScanResult - A pointer to an address to set the result

Code:

AOBScan proc Array,ArraySize,ScanBaseAddress,ScanRange,ScanResult
LOCAL TempR:DWORD
mov eax,ScanBaseAddress
mov ebx,eax
add ebx,ScanRange
mov ecx,ArraySize
mov edx,Array

.while eax < ebx
   push ebx
   NextByte:
   mov byte ptr bl,[eax+ecx-1]
   mov byte ptr bh,[edx+ecx-1]
   .if bl == bh
      .if ecx==01
         mov TempR,eax
         .if ScanResult != NULL
            push eax
            mov ebx,ScanResult
            pop [ebx]
         .endif
         pop ebx
         mov eax,TempR
         ret
      .else
         dec ecx
         jmp NextByte
      .endif
   .else
      mov ecx,ArraySize
   .endif
   pop ebx
   AOBFound:
   inc eax
.endw
xor eax,eax
ret
AOBScan endp

Uligor
Grandmaster Cheater

Reputation: 0

Joined: 21 Jan 2006
Posts: 956

Posted: Tue Sep 25, 2007 11:49 am Post subject:

This here is mine

Code:

FindAOB:
push esi
push edi
cld
mov esi, [esp+0Ch]
mov edx, [esp+10h]
mov edi, [esp+14h]
mov ecx, [esp+18h]

AOBloop:
cmpsb
jz ByteFound
mov esi, [esp+0Ch]
mov edx, [esp+10h]
jmp EndAOBLoop

ByteFound:
dec edx
jz AOBFound

EndAOBLoop:
loop AOBloop
xor eax, eax
jmp AOBend

AOBFound:
mov eax, edi
sub eax, [esp+10h]
AOBend:
pop edi
pop esi
ret

Example:

push ScanSize
push ScanAddress
push AOBsize
push AOBtoFind
call FindAOB

Made this a long time ago, so it isn't really tweaked.
_________________

Potatoes
Newbie cheater

Reputation: 0

Joined: 25 Sep 2007
Posts: 16

Posted: Tue Sep 25, 2007 10:40 pm Post subject:

=O

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