Cheat Engine

bknight2602 · Posted: Sun Mar 13, 2016 11:47 am Post subject: Timer code

I have an address list loaded with opCodes, it is a timer that counts down from 60 to 0.
What I'm looking for is code to stop the timer without crashing the game.
ETA: I tired injecting code to do nothing, but that crashed the game.

realrbn · Posted: Sun Mar 13, 2016 2:06 pm Post subject:

Have you tried doing it so it constantly sets the Timer to for example 20?
Have you tried making it so it Increases the Number instead of Decreasing?

bknight2602 · Posted: Sun Mar 13, 2016 2:13 pm Post subject:

Only tried the "do nothing" approach. I'm not sure which stack variable would have to be set to your example of 20.
I have no knowledge of which stack variable or how to make it increase, but that might be a good idea, although intuitively seems like this may crash the game also.

realrbn · Posted: Sun Mar 13, 2016 2:46 pm Post subject:

You could try to do [code] mov [youradress+offset],#20 or mov [youradress+offset],(Float)20 If it's a Float Value...

bknight2602 · Posted: Sun Mar 13, 2016 2:54 pm Post subject:

Pardon the question, but what [youradress+offset] are you referring?
I suspect it is an integer number since it is counting down from 60 seconds(60000) to 0.

++METHOS · Posted: Sun Mar 13, 2016 3:32 pm Post subject:

Have you checked to see if the instruction is accessing other addresses? Chances are, you'll need to filter them out.

bknight2602 · Posted: Sun Mar 13, 2016 3:51 pm Post subject:

No I guess just a single level(?) as all I did is search for what writes to the address I found that represents the clock time shown in the game.

++METHOS · Posted: Sun Mar 13, 2016 3:58 pm Post subject:

Right-click on the instruction inside the memory viewer. You have the option to see what addresses that instruction is accessing. If it's more than one, you'll have to filter them out.

bknight2602 · Posted: Sun Mar 13, 2016 4:01 pm Post subject:

I should have included that in the first post, sorry. The top image is of all the stack.

++METHOS · Posted: Sun Mar 13, 2016 4:06 pm Post subject:

No. I'm not talking about the address. The instruction that you get in those two pictures...

Click on 'show in disasembler'. From the memory viewer, right-click on the instruction to see what addresses are being accessed by it.

Alternatively, in the debugger window that you're showing in your pictures, you can right-click on an empty, white space to check if opcodes are accessing other addresses. This will generate a number ( 1 to 8 ), which will tell you if the instruction is accessing multiple addresses.

bknight2602 · Posted: Sun Mar 13, 2016 4:48 pm Post subject:

I haven't done this too often, so I hope I imaged what you were looking for.

++METHOS · Posted: Sun Mar 13, 2016 5:11 pm Post subject:

Since the instruction that you are wanting to manipulate is accessing several other addresses besides the one that you're interested in, you'll have to write a script that filters out the bad addresses so that the nop only affects the address that you're interested in. Doing so should keep the target from crashing, assuming that the address that you're interested in isn't critical.

You can study the last step of the CE tutorial that covers data structure dissection. Other ways for finding filter ID's:

bknight2602 · Posted: Sun Mar 13, 2016 5:24 pm Post subject:

From tutorial determining pointers forward I have failed miserably, and never acquired any proficiency in those lessons. Thus if you would give me what you think might be a good starting place I would be appreciative.

++METHOS · Posted: Sun Mar 13, 2016 5:34 pm Post subject:

I have outlined everything that you need to do, above. Aside from walking you step-by-step through the process, there's nothing more that I can do. There are written guides and videos that will walk you through each step of the tutorial. If you have any questions, just ask.

If you don't want to do the tutorial, I would start here:

bknight2602 · Posted: Sun Mar 13, 2016 8:01 pm Post subject: