Cheat Engine

Bavarian · Cheater Reputation: 0 Joined: 28 Feb 2018 Posts: 30

seems memory view mismatches opcodes

"48 3B C8" should be interpreted as cmp rax, rcx.

not a bit deal in terms of functionality, however spent a bit time trying to understand why aobscan does not work after disabling cheat.

autoassemle compiles
cmp rax,rcx 48 39 C8

original code represented as
cmp rax, rcx 48 3B C1

ParkourPenguin · Posted: Fri Nov 23, 2018 9:14 pm Post subject:

One assembly language mnemonic can have multiple machine code representations. Opcode rex.w+39 = cmp r/m64,r64; opcode rex.w+3B = cmp r64,r/m64. When both operands are registers, the mnemonics of these instructions will overlap.

It's not a bug, it's just the way CE chooses to interpret cmp rcx,rax by default.

To fix this, please use the AOB Injection template. It will correctly write the original bytes back into the injection point. Reassembling it like you're doing can result in problems like this.