John-the-Ripper

Find out the documentation here: https://www.openwall.com/john/doc/

This is a password cracking tool that is support on most of the operating systems, it includes customizable word mangling rules that expand the wordlists without additional effort.

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Editing John-the-Ripper Rules

Mangling rules are located in /etc/john/john.conf , this topic is pretty huge so you can find out more about it here in the documentation: https://www.openwall.com/john/doc/RULES.shtml

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John-the-Ripper with Aircrack-ng

Because John-the-Ripper can't crack .pcap files directly, we can use it with Aircrack-ng to do so. How? We can use John-the-Ripper to generate a wordlist depending on the rules we have, the command below shows how:

sudo john --wordlist=/usr/share/john/password.lst --rules --stdout | aircrack-ng 
-e <ESSID> -w - <Capture File>