Cheat Engine

cod3r_ · How do I cheat? Reputation: 0 Joined: 13 Apr 2010 Posts: 9

I'm on a 64 bit windows vista. i7 920. Trying to debug a game that I guess cares that I'm 64 bit. So I upgraded to 5.6 turned kernel mode on rebooted and turned off the signature enforcement.

But when I try to attach the debugger it says it has to start DBVM and that there is a high chance it's going to crash my computer. Well looks like it's a 100% chance heh.

any way around this? Or am I just screwed with a 64bit system?

rooski · Posted: Tue Apr 13, 2010 8:52 pm Post subject:

i would post this question in the cheatengine section , cause darkbyte browses that more often than this one.

hcavolsdsadgadsg · Posted: Tue Apr 13, 2010 8:56 pm Post subject:

moving.

Dark Byte · Posted: Wed Apr 14, 2010 7:26 am Post subject:

Define the crash? Complete freeze?(dbvm) Bsod?(dbk64 loading dbvm) Components on your mainboard exploding ?(faulty hardware)
Also, for 64-bit, don't enable global debug, since that will crash (Deep kernel int1 handling by dbvm isn't fully emulated yet)

I take it you don't have a serial port , cable and a second computer with a serial port as well ?

Without that it's pretty hard to debug.

Anyhow, what you could try:
Add or remove ram
Try closing as many programs as possible before launching (e.g: Don't have vmware or other virtual machine running at the same time, not supported yet)

Launch dbvm manually: Go to the about screen and click on the green text saying your system supports dbvm

cod3r_ · How do I cheat? Reputation: 0 Joined: 13 Apr 2010 Posts: 9

Dark Byte · Posted: Wed Apr 14, 2010 11:07 am Post subject:

hmm, ok, so a dbvm lockup without a spontanous reboot. Meaning it's stuck somewhere in the VM on a event it doesn't understand how to handle.

the output to serial wouldn't mean much to you, but it does to me. But the problem is as you said, most computers don't come with a serial port anymore, and usb serial just isn't the same (pci serial is supported though)

Oh yes, how much ram do you have ?

cod3r_ · How do I cheat? Reputation: 0 Joined: 13 Apr 2010 Posts: 9

6GB of ram

Dark Byte · Posted: Wed Apr 14, 2010 1:41 pm Post subject:

Check in your bios if you have the intel-VT ability disabled or not.
If it's disabled, enable it

cod3r_ · How do I cheat? Reputation: 0 Joined: 13 Apr 2010 Posts: 9

OK. Intel-vt was already enabled. Global debug was unchecked as well. I went to about and started DBVM manually and it started up fine no issues. But when I went to attach the debugger it locked the whole computer again, but this time I got a blue screen, which is different from before.

The Blue Screen said:

IRQL_NOT_LESS_OR_EQUAL

then had some hex codes that i'm not sure tells anything

STOP 0A (168,0C,0,FFFFF80002CA228BA)

Dark Byte · Posted: Wed Apr 14, 2010 8:16 pm Post subject:

Define attach debugger? Do you mean just use one of the options that use the debugger or actually attach it ? (For the kernelmode debugger you don't attach, just open and then use the function)

Also, which particular debug option did you use ?

And did the bsod mention any specific module ? e.g dbk64.sys, or something else ?

cod3r_ · How do I cheat? Reputation: 0 Joined: 13 Apr 2010 Posts: 9

actually all i did was "Find out what writes to this address" and all i have set in extra settings is use kernelmode debugger when possible. Open process is grayed out and checked.

The BSOD didn't mention a module actually.. unless i missed that, but I don't think I did

Dark Byte · Posted: Wed Apr 14, 2010 8:36 pm Post subject:

then not sure what the problem is. As far as I know the bsod only happens when global debug is used, or the breakpoint happens during taskswitch, and I doubt you're using this option on a kernel address

After enabling it in the about screen, what version of dbvm does it tell you it is ?

cod3r_ · How do I cheat? Reputation: 0 Joined: 13 Apr 2010 Posts: 9

ok. .sorry i got side tracked for a bit.

If i don't open a process and run DBVM it runs and it says I'm using version 5.

If I open a process first THEN try to open DBVM it locks up the PC.. Hard lock have to reboot.

If I get the DBVM running, then open the process everything is fine, but when I do "find out what writes this address" I get the BSOD.

Going to get the BSOD again and see if it mentions a module

EDIT:

yup no module listed with the BSOD

cod3r_ · How do I cheat? Reputation: 0 Joined: 13 Apr 2010 Posts: 9

so should i probably just look into trying this out in a VM? seems like i ran into this sorta thing before and somehow got around it but I don't remember what I did. It's weird too because some games work, but not others.

Dark Byte · Posted: Sat Apr 17, 2010 2:21 pm Post subject:

It's not going to work in a VM

Most likely it's the interrupt emulation that isn't 100% like real hardware yet.
My guess is that it goes wrong when the breakpoint triggers during high load or the breakpoint is triggered a lot

Currently no idea where to look, but if I get an idea I'll see if I can fix it