How To: Hack Deep Freeze and Vision
12.10.2005
POSTED IN Exploits, Hacking, How To, Software | 57 COMMENTS
Another resent question I have received from my fellow students is “How do I get around Deep Freeze?�? It isn’t something that I can just tell a person while running around the track at school during PE class. So, Eric comes to your rescue again and explains it all, but first, if you are on a school computer and your teacher has Vision installed, you may want to do some stuff before reading this article so he/she can’t see what you’re doing.
There is a couple ways of stopping Vision. First, go to C:\Program Files\Master Solution you should see a folder inside called Vision, open it and see a program called MEUCONF, open it and hit “Run Manually�?, and that should solve that problem.
Another way is by simple unplugging the RJ45 connector from the NIC (Or in English, disconnect the wire coming from the networking card.)
FOR WINDOWS 95/98/ME:
Deep Freeze is a VxD (Virtual Device Driver) found in C:\Windows\System\Iosubsys\persifrz.vxd.
So the only way for hacking it is using a boot-disk and deleting the file. Yes…there is more files in C:\program~1\hypert~1\deepfre~1 but those are obsolete to us. They have nothing to do with what we are doing.
Note: persifrz.vxd IS Deep Freeze. Hence, deleting it will kill it completely
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If you can’t boot from the floppy because your boot order is not setup that way, and your teacher has password-protected the bios, you can always 1-pull the battery out of the motherboard 2- move the “reset jumper�? by the bios to reset it.
FOR WINDOWS 2K/XP:
You need to delete 2 drivers and 1 service (I’m sure you can figure out the the paths)
DepFrzLo.sys (kernel driver)
DepFrzHi.sys (filesystem driver)
dfserv.exe (service)
frzstate.exe (password dialog)
persis00.sys (password file and “on/off switch”)
You should be good to go.
You should take Questions/Comments to the “Comments�? section of this post.

