In this tutorial for Cr0w’s Place we are cracking the WEP protocol with an automated script called Wiffy. Wiffy uses the power of Aircrack-ng suite crack WiFi networks, DoS attack on them and many other things. Lets see a little theory for now to understand things better:
Wired Equivalent Privacy (WEP) is a security algorithm for IEEE 802.11 wireless networks. WEP, recognizable by the key of 10 or 26 hexadecimal digits, is widely in use and is often the first security choice presented to users by router configuration tools. Although its name implies that it is as secure as a wired connection, WEP has been demonstrated to have numerous flaws and has been deprecated in favour of newer standards such as WPA2. In 2003 the Wi-Fi Alliance announced that WEP had been superseded by Wi-Fi Protected Access (WPA). In 2004, with the ratification of the full 802.11i standard (i.e. WPA2), the IEEE declared that both WEP-40 and WEP-104 “have been deprecated as they fail to meet their security goals”.
Wiffy.sh is a bash script to automate cracking WiFi networks! Supports WEP (Client & Client-less), WPA/WPA2, MAC filtering and hidden SSID with the option of connecting afterwards.
Aircrack-ng is a network software suite consisting of a detector, packet sniffer, WEP and WPA/WPA2-PSK cracker and analysis tool for 802.11 wireless LANs. It works with any wireless network interface controller whose driver supports raw monitoring mode and can sniff 802.11a, 802.11b and 802.11g traffic. The program runs under Linux and Windows; the Linux version is packaged for OpenWrt and has also been ported to the Zaurus and Maemo platforms.
Monitor mode, or RFMON (Radio Frequency MONitor) mode, allows a computer with a wireless network interface controller (WNIC) to monitor all traffic received from the wireless network. Unlike promiscuous mode, which is also used for packet sniffing, monitor mode allows packets to be captured without having to associate with an access point or ad hoc network first. Monitor mode only applies to wireless networks, while promiscuous mode can be used on both wired and wireless networks. Monitor mode is one of the six modes that 802.11 wireless cards can operate in: Master (acting as an access point), Managed (client, also known as station), Ad hoc, Mesh, Repeater, and Monitor mode.
You can download Wiffy.sh from here.
You can buy an Alfa AWUS036H card that I used for the tutorial from here.
Everything you are going to see is for educational purposes only, so operate carefully and in your own property. I bring no responsibility in what happens to you if you act irresponsibly.
Thank You For Watching.:)