Cheat Engine

Paine- · How do I cheat? Reputation: 0 Joined: 04 Apr 2006 Posts: 3

Would it be possible to create a hotkey to increase an EIP by 804, then decrease it again by the same amount (Hell, or toggle between two values, same effect)? The Cheat Engine hotkeys seem to have nothing of the sort available. The address I'm using will be the same...

Blech. Either way, thanks for taking the time to read this.

Dark Byte · Posted: Tue Apr 04, 2006 7:51 am Post subject:

Sure, it's easy to add in a function that increases eip with a certain ammount each time a hotkey is pressed. But please try to understand that if you do that there is a 99.9% chance the game will completly crash and perhaps even mess up your comp[/i]

Paine- · How do I cheat? Reputation: 0 Joined: 04 Apr 2006 Posts: 3

Dark Byte · Posted: Tue Apr 04, 2006 7:59 am Post subject:

EIP is the instruction pointer of a thread.
It points to the currently instruction being executed.
When you press the hotkey in a game, you change the current instruction pointer to a new location, and since you press the hotkey the current eip will be at any random position in the game (e.g eip might be at a copy instruction, or eip might be at the code to display the screen)
What if it was at the code that makes you walk and the code after it was a experimental code that never gets called which will format your harddisk. EIP will then jump to there and execute the code to format your hard disk.....

you can only manually edit it because the game will be paused at that moment and you know what the current eip is. with hotkeys the game will not be paused and you don't know the current eip

personmans · Posted: Tue Apr 04, 2006 6:17 pm Post subject:

Unless you are SETTING it to a place you know of, IE a codecave. then you wouldn't need to know where it was at,... er ah crap you do.. I was thinking you could pushad and popad then return... but i realized that your code would have no way of knowing because CE changed it, rather than an unconditional jump Embarassed

im guessing there could possibly be some sort of similar application... and possibly the game IS at a copy function, and you just want to step over it =P oops game forgot to make me pay for this item or similar?

UberNoob · Posted: Tue Apr 04, 2006 7:40 pm Post subject:

why it would fail

Normal code ( { = code)

personmans · Posted: Tue Apr 04, 2006 7:46 pm Post subject:

if you jumped to a known code-cave with a ret at the end was what i was saying... before i realized that im a dumbass and if you had a RET it wouldn't know where to return to.....

So yeah like a 99% chance it wont work if you hotkey it.

EDIT: Okay, unless you're as cool as darkbyte... (read his post) but i'm gonna guess that most of the people who 'pause edit' their EIP's know what we're talking about and how to implement it.

Dark Byte · Posted: Wed Apr 05, 2006 12:39 am Post subject:

Ah, in case of a codecave
Let your codecave look at a memorylocation (either allocated and registered by a script or static address) and then adjust the register according to that address.

Then add that address to the list and give it a hotkey to increase or decrease or whatever