Cheat Engine

ubiByte · Posted: Thu Feb 04, 2016 1:04 pm Post subject: Data Structure Value to Script

Hi Guys,

This might be a dumb question but for some reason I can't get it to work. Even though I think it's something simple that I'm missing.

When I dissect data/structures, and see the values I can just click on a value from there and change it and it will change in the game. That part is easy enough. However, I want to do this with a script I don't know why I'm having a hard time getting it to work.

For example let's say I have a value at 000C and it's value is 16. If I just click on it there in the Structure dissect window I can just change the value. When I try to do it in a script though it does nothing.

This is what makes sense to me but I guess it's not correct:
Could I just do something like;

Daijobu · Posted: Thu Feb 04, 2016 1:15 pm Post subject:

ubiByte · Posted: Thu Feb 04, 2016 1:53 pm Post subject:

++METHOS · Posted: Thu Feb 04, 2016 4:01 pm Post subject:

Paste your entire script. Use AOB injection or full injection.

ParkourPenguin · Posted: Thu Feb 04, 2016 4:42 pm Post subject:

Are you sure another instruction isn't overriding your change shortly after the mov?

Put a breakpoint just before your mov, step through it, and see if the address changes in your cheat table. If it does change, then your code injection is pretty much working as intended. If when you continue running the code the value is changed to something else, then some other instruction is writing to that address. You can either NOP that instruction from your script if it's a short enough distance away from your injection point, or get it from another AoB scan in the same script and NOP it that way.

Pasting your script here as well as the ASM around the instruction you're hooking would be helpful.

++METHOS · Posted: Thu Feb 04, 2016 5:37 pm Post subject:

ubiByte · Posted: Thu Feb 04, 2016 11:35 pm Post subject:

I'll take pictures and attach them here, I'm at work now so I can't do it until tomorrow morning thanks for your replies though.

ubiByte · Posted: Fri Feb 05, 2016 10:59 am Post subject:

Here are screenshots to help better understand what I'm asking,

++METHOS · Posted: Fri Feb 05, 2016 11:10 am Post subject:

You should have pasted your entire script with your changes included after letting CE auto-create it with the AOBScan or Full Injection template.

Anyway, the value that you are trying to change is at offset +08, yet your injection point is at offset +0?

The injection point that you are using may not be getting accessed very often (or at a certain time). You need to add the value that you are wanting to change to your cheat table, right-click it to see what is accessing it, and use an instruction that is accessing the address often so that your changes are immediate.

ParkourPenguin · Posted: Fri Feb 05, 2016 11:14 am Post subject:

ubiByte · Posted: Fri Feb 05, 2016 11:24 am Post subject:

Thanks guys using what accesses it is a great idea as well as the breakpoint.

++METHOS · Posted: Fri Feb 05, 2016 11:49 am Post subject:

Using 'what accesses' is great, but as ParkourPenguin pointed out, using what 'writes' may be preferred as it gives you more control over your value. For example:

If you create a health cheat using an instruction that accesses your value every second, then your health will be restored every second. But if you get hit, your health may still be affected...even if it's for a fraction of a second.

The great thing is, you can nop the write instruction and create a second injection point at one of the other instructions to make it perfect. Very Happy