Change Command?

[Vultrax]

I have a Command: "CMP BYTE PTR DS:[ESI+16C],0" and i would like change it to "CMP BYTE PTR DS:[ESI+16C],1".

How can i do it this with Visual Basic?

 

[Szaka]

you want to change every command? Or just one on specifica address?

 

[Vultrax]

Edit: One specific address.

 

[Szaka]

Normal loop with changing bytes wont work because u can cut end of one instruction and beginning of second (the bytes may fit not only the MOV instruction), you need something that will have built in disasm

 

[Vultrax]

How dou you mean that?
(My English ist not the best :O)

I have a Module for Visual Basic that is "ReadWriteProcessMemory".

 

[Szaka]

i mean thats some bytes may be your instruction, lets say 5, but its also possible that 3 bytes are end of one instruction and 2 are beginning of next, and than patching it will crash the app. You need something with disasm, what can recognize the instructions. By the way it looks like specific command, how many times it appears? Maybe better idea is to simply copy few addresses?

 

[till0sch]

Just assemble it in Cheat Engine and copy the bytes of the instruction. Then use the Trainer class by Cless and write to that place. As easy as that.
https://forum.cheatengine.org/viewtopic.php?p=5347687

 

[Vultrax]

till0sch97

Hmmm, it's not working for me ..
Can you show me an example with the Code and Trainer_Module?

 

[Rake]

[ESI+16C]

Another way is to find a way to get what ESI holds and store it. Then do your magic once ready.