For those of you not familiar with BackTrack, it’s a GNU/Linux distribution that is used for security testing providing users with a wide range of tools from port scanners to password crackers.
XDA forum member msullivan is so keen on BackTrack that he has posted an Android build from XDA member anantshri who built the base image.
The OS is fully Ubuntu-based so it is possible to run it like a desktop, including running Firefox and other Linux applications. Other features of BackTrack 5 include being able to do advanced network scans right from your Android device via WiFi, no laptop required.
In theory the build posted, should be universal, so to try it out, head on over to the forum thread and download the zip.
BackTrack 5 for Android requires root access.
Please note that this is not a native client and is based on the chroot and VNC method that has been used to get Ubuntu running with Android and is very unstable. The project is not supported, and requires some technical skills including Linux knowledge._________