Cheat Engine

chochang262 · Posted: Thu May 31, 2012 2:29 am Post subject: DBVM on virtual machine.

Hi. I'm relatively new to the site and I was wondering...(I'm not to sure what it is or how it works but my normal operating system cannot make use of DBVM) If I were to use a virtual machine would it be possible to install CE on that and run it via VM. and if the answer is yes could you point me in a general direction of which operating system. If no mabey a section of info. about DBVM so that I can learn a bit more and go from there. Thanks for any help before hand.

Dark Byte · Posted: Thu May 31, 2012 2:51 am Post subject:

only virtual machine I know that supports dbvm is bochs.

It's extremely slow though, but I think it should be fast enough for dos 6.1, windows 3.1, and perhaps even windows 95. (nt 4.0 might work too, and with some luck win2k as well)

It might be easier to just buy a intel system (and 2 pci serial ports to access the internal debugger)

chochang262 · Posted: Thu May 31, 2012 3:10 am Post subject:

Thanks for the quick and informative help Smile

I'll keep your advice in mind Thank you! Smile

PS. why is my username in a post from like 2009 I wasn't even here then.
it's stickied on the general discussions page.

STN · Posted: Thu May 31, 2012 9:26 am Post subject:

mystique · Guest

Dark Byte · Posted: Mon Oct 08, 2012 12:22 pm Post subject:

A vm that uses VT-x CAN expose this functionality to the guest system, but it will need to hijack all the calls to and from the VT-x instruction set.
e.g when the control block is generated don't pass that block on to the system, but pass a modified copy on which then returns to the original VM who can then pass that on to the guest faking that it came from hardware

It's a lot of extra work and often not worth the time to add in (Who wants to run a vm inside a vm ?)

(the VTx implementation already facilitates in breaking when a VT-x instruction is called. The usual reaction for now is to return an #UD though )