What is BackTrack 5

Backtrack is a very popular linux distribution for penetration testing. It has hundreds of tools for pentesting and hacking. BackTrack provides users with easy access to a comprehensive and large collection of security-related tools ranging from port scanners to Security Audit.

BackTrack includes many well known security tools including:
- Metasploit for integration
- RFMON, injection capable wireless drivers
- Aircrack-ng
- Gerix Wifi Cracker
- Kismet
- Nmap
- Ophcrack
- Ettercap
- Wireshark (formerly known as Ethereal)
- BeEF (Browser Exploitation Framework)
- Hydra
- OWASP Mantra Security Framework, a collection of hacking tools, add-ons and scripts based on Firefox
- Cisco OCS Mass Scanner, a very reliable and fast scanner for Cisco routers with telnet and enabling of a default password.
- A large collection of exploits as well as more commonplace software such as browsers.

BackTrack arranges tools into 12 categories:
- Information gathering
- Vulnerability assessment
- Exploitation tools
- Privilege escalation
- Maintaining access
- Reverse engineering
- RFID tools
- Stress testing
- Forensics
- Reporting tools
- Services
- Miscellaneous

What you will need

- Backtrack 5 ARM
- Free space on the root of you device for backtrack 5
- A rooted device
 How to root Android Device
- Busybox
- SuperUser
- Terminal Emulator
- AndroidVNC
 First thing all of these are free on Google play

First you download  compressed Backtrek arm image for android Backtrack-;armv.10 Download
The Second thing is install Zararchiever for extract compressed backtrek image file Zararchiever Download

OK are you ready to install backtrek on android ,Now you install Busybox ,BusyBox is installer and uninstaller Android program Busybox Download

Now you install Linux Installer ,linux installer is a main application in this process Linux Installer Download
Open Linux Installer and click on Launch button,on your right side
 click on Setting > Edit then change the file path there to your backtrack image, the .img file that you extracted.
Now you need a Terminal Emulator 
Terminal Emulator will open, you just have to proceed with the installation steps, ask you for a new password, and some preferences. When it's done you will get a red "root@localhost~#" like the picture bellow:

You are now in backtrack! Now if you want backtrack in GUI , go to Google Play and install Android VNC
Open It when it finishes installing, and it will look like this
Now lets run Backtrack GUI with VNC viewer
startvnc
 To connect wth VNC we must know the port where VNC listening. Run netstat -anpt and remember the port where VNC listening. In this case the port is 5901
Open AndroidVNC and fill the form like this:
Nickname : BT5
Password : toortoor
Address : 127.0.0.1
Port : 5901
Connect it and you will see Backtrack 5 interface :-)

You Download  & install more linux distribution by these same trick .
All Android  Linux Distribution Download Link