REQUIREMENTS:-
BackTrack is a well-known specialized Linux distribution focusing on security tools for penetration testers and security professionals,
BackTrack 5 (BT5) is that it offers a slew of security and forensic tools on a live DVD, ready to use. It’s based on Ubuntu Lucid (10.04 LTS) with Linux kernel 2.6.38 and some patched WiFi drivers to allow injection attacks. You can download the distribution in a GNOME or a KDE version, for 32-bit or 64-bit x86 machines. It’s a live DVD ISO file, which you can burn to a DVD or write to a USB stick. On the desktop of the live session, there’s an installer icon if you want to install BackTrack permanently. For the first time, the project also has an image for ARM, which you can run on your smartphone or tablet to test the security of a wireless network.
2.VM-ware Workstation (If you use an ISO File)3.Wireless USB Adapter (If you use VM-ware Workstation) Step 1 – Backtrack - Exploitation Tools -
Wireless Exploitation Tools - WLAN Exploitation - Fern WI-Fi Cracker.
Now following application will be seen.
Step 1 –
Now Refresh it.
Step 2 –
Now select the interface as wlan0.
Now click on “OK” after the box appears.
Step 3 –
Now click on “Scan for Access points”
Step 4 –
After that it will show list of Detected signals
Step 5 –
Now click on WEP box
Following screen will show like this.
Step 6 –
Now choose the Attack option as you wish to do like,
A. Arp Request Replay
B. Chop Chop Attack
(IN MY CASE I HAVE CHOSEN “Arp Request Replay”)
Now Click on “Attack” Button
Step 7 –
Now wait for its Attack functions like “Gathering Packets & Injecting Arp Packets”
And at last KEY IS FOUND!!!