Cheat Engine

NotMyBug · Cheater Reputation: 0 Joined: 14 Aug 2007 Posts: 42

Hi there,
I use CE 5.3 to set a
breakpoint on an address.

But when the address is
accessed the game crashes.

This are my settings:

I don't have any plugins installed.
I use Prey 1.3.

sponge · Posted: Sun Sep 09, 2007 6:11 pm Post subject:

Probably because hardware/software BP's are detected.

Dark Byte · Posted: Sun Sep 09, 2007 6:50 pm Post subject:

try kernelmode debugging.
problem is that you can't set a normal breakpoint then, but it does allow you to find what accesses and writes.

and you can try saving states of the registers using code redirection

NotMyBug · Cheater Reputation: 0 Joined: 14 Aug 2007 Posts: 42

kernelmode debugging worked for
write and access breakpoints.

But how can I set normal
breakpoints then?

Dark Byte · Posted: Mon Sep 10, 2007 8:36 am Post subject:

that's something being worked on... (since it needs to be written from scratch because the windows api can't be used here)

anyhow, you could use some codeinjection instead of a breakpoint and then save the registers to a static address. Of course, requires a bit more planning, and stepping through the code isn't possible

Toxic Lullaby · Posted: Mon Sep 10, 2007 5:20 pm Post subject:

Sometimes you get these problems because of the game's copyright protection.
If you want to use hardware breakpoints you can try the cracked version of the game.
Just be sure to backup your original exe and any other files it overwrites.

If it still doesn't work, your only option is to do what Dark_Byte said.

NotMyBug · Cheater Reputation: 0 Joined: 14 Aug 2007 Posts: 42

As I want to write a trainer for the retail version
using a crack is no option for me.

So I will try Dark Bytes solution.