Wifi Cracking: Start With the Basics: WEP

WEP is so old and weak you’ll hardly ever find it in use, though there are always the few who haven’t paid attention. WEP cracking is a great way to get familiar with the aircrack-ng suite (https://www.aircrack-ng.org/), its commands and processes.

Where to Learn

Start with the horse’s mouth:
https://www.aircrack-ng.org/doku.php?id=getting_started

Here’s a nice command-by-command example:
https://www.wirelesshack.org/step-by-step-kali-linux-and-wireless-hacking-basics-wep-hacking-part-3.html

And a video that accompanies it (circa 2013):
https://www.youtube.com/watch?v=RydsjNhUjdg

Null-Byte has a newer (2017) article with excellent examples:
https://null-byte.wonderhowto.com/how-to/hack-wi-fi-getting-started-with-aircrack-ng-suite-wi-fi-hacking-tools-0147893/

Where to Test Your Wifi Hacking Skills

Find a Wireless Access Point (WAP), preferably the oldest you can find.

Assignments

1. Set up your WAP using WEP encryption. Don’t go crazy turning on the firewall or anything else; just concentrate on this one skill.
2. Crack into that sucker, all from the command line, using the examples above.
3. Kali is constantly changing. Does your version have a GUI tool for WEP cracking? Find it and try it.