For a more detailed description of the idea behind this project:
http://www.excitingbits.net/2005/10/23/a-unix-userkit/

It's easy to hide in a system when you have root privileges: the current arms race is bringing Unix rootkit developers deeper and deeper underground: now your OS might even be running inside a malicious virtual machine!

Far from the tumultuous battles of this world, mrcellophane does not care about exploiting root access: he wants to run code in a user session, without the user's knowledge.

This is essentially what Windows trojan horses do.

Functionally mrcellophane is a proof of concept with 4 distinct parts:
   - Bootstraping: installation and initial injection
   - Active payload: whatever useful we wanted to remotely execute in the first place.
   - Hiding: the code necessary to hide mrcellophane's presence from within the session it hijacks
   - Replication: the code necessary to propagate mrcellophane's behaviour to new processes