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Can't AOB scan over a DLL.

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rgbb1
How do I cheat?

Reputation: 0

Joined: 27 Jan 2025
Posts: 1

Posted: Mon Jan 27, 2025 5:08 am Post subject: Can't AOB scan over a DLL.

I would like to perform a CE code injection on a line of assembly code from a game as indicated below.

Code:

VCRUNTIME140.memmove+108 - 44 88 40 04 - mov [rax+04],r8b
VCRUNTIME140.memmove+10C - C3 - ret
VCRUNTIME140.memmove+10D - 48 8B 0A - mov rcx,[rdx]

VCRUNTIME140.memmove+110 - 48 89 08 - mov [rax],rcx <<< This line.

VCRUNTIME140.memmove+113 - C3 - ret
VCRUNTIME140.memmove+114 - 0FB6 0A - movzx ecx,byte ptr [rdx]
VCRUNTIME140.memmove+117 - 88 08 - mov [rax],cl
VCRUNTIME140.memmove+119 - C3 - ret

To test if a plain AOB injection works, I have the following code below

Code:

[ENABLE]

aobscanmodule(INJECT,VCRUNTIME140.dll,ERROR: Could not find unique AOB, tried code "48 89 08 C3 0F B6 0A") // should be unique
alloc(newmem,$1000,INJECT)

label(code)
label(return)

newmem:

code:
mov [rax],rcx
ret
movzx ecx,byte ptr [rdx]
jmp return

INJECT:
jmp newmem
nop 2
return:
registersymbol(INJECT)

[DISABLE]

INJECT:
db 48 89 08 C3 0F B6 0A 88 08 C3 8B 0A 89 08 C3

unregistersymbol(INJECT)
dealloc(newmem)

Unfortunately the code gives me the error

Code:

Error while scanning for AOB's : INJECT

Error: Not all results found

Meanwhile if I input this array of bytes into the cheat engine main window as shown below, we can see that there are many matches in the same file. I am not sure what is going on. Does anyone know why the AOB scan code can't find a set of bytes that the main cheat engine window can?

Screenshot 2025-01-27 190422.png

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ParkourPenguin
I post too much

Reputation: 149

Joined: 06 Jul 2014
Posts: 4619

Posted: Mon Jan 27, 2025 12:05 pm Post subject:

Quote:

Code:

...ERROR: Could not find unique AOB, tried code "48 89 08 C3 0F B6 0A") // should be unique

This is self-evident

You really shouldn't be injecting at memmove anyway. It's such a generic routine that there's probably many other addresses the instruction also accesses. You'd have to filter those out (CE tutorial step 9).
_________________

I don't know where I'm going, but I'll figure it out when I get there.

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