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[Qemu-devel] building a virus-proof PC with Qemu

From: Piotras
Subject: [Qemu-devel] building a virus-proof PC with Qemu
Date: Tue, 23 Nov 2004 13:31:59 +0100


Imagine that with every byte stored on disk image, the emulated 
memory and CPU registers we associate a flag indicating if the 
byte come from "trusted" source. This information would propagate 
with every memory/disk access (data-flow tracking).

Before Qemu would translate a block of code the trusted bits could 
be checked to see if the code is "trusted". Of course there are 
issues with dynamic loaders, dynamic compilers, etc. And it's not 
going to work well with scripted code.

Possible usage:
  * building virus-proof PC,
  * automate hunting for worms/exploits on Internet.



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