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cpuid break via hardware virtualization

Tool name: cpuid break via hardware virtualization
Rating: 0.0 (0 votes)
Author: deroko of ARTeam                        
Website: http://deroko.phearless.org
Current version:
Last updated:
Direct D/L link: Locally archived copy
License type: Free / Open source
Description: cpuid break via hardware virtualization


Not much to say, cpuid causes VM-Exit, so whenever cpuid occurs in our
target, inject int 3 event into Guest.

i3here on - must be set in SoftICE

No MP support due to problem with NMI handling when SoftICE is active.
Disable MP in BIOS if you want to use this tool with SoftICE, as this
tool is designed to work with SoftICE and i3here on...


Requires Intel Hardware Virtualisation technology, and I have no idea
how this will work on AMD!!!!

Did you wonder about finding SecuROM cpuid stuff? Well here it is...

(c) 2008 deroko of ARTeam


ps. there is some code which is designed aswell for MP systems, but
due to not yet solved issue with NMI that code is not used.
Example of such code is ExitEip[ccpu] where ccpu is only
shortcut for MyKeGetCurrentProcessorNumber() procedure, listed
in kegetcurrentprocessornumber.c

TaskSwitch code implemented in HandleTaskSwitch is never used
on single core systems, as windows doesn't perfrom TaskSwitch
at all (only when NMI or KiTrap08 is executed).

NOTE: DRIVER IS NEVER UNLOADED, as at the time of releasing this
code I didn't write that stuff yet. You may find some
leftovers in unloadme() in vm.c, but it's not done yet...
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