How Crunch – Password file maker works

Reference: Kali Linux - Hacking Tools Introduction









Crunch is a wordlist generator where you can specify a standard character set or a character set you specify.

Crunch can generate all possible combinations and permutations.

With specifying the minimum and maximum length of characters, and the characters themselves,

Crunch will create a comprehensive list of words that can be used for password cracker programs.

Below shows how crunch command is used:

rassoul @kali:~# crunch

Usage: crunch <min> <max> [options]


Below example, will create a password list with words between 2 to 3 character using one of “01234567890abcdef#!” characters. And the result will be saved into a file called password.txt.

rassoul @kali:~# crunch 2 3 0123456789abcdef#! -o password.txt


Below shows part of the created file above as a result of using crunch command:

rassoul@kali:~$cat password.txt

00
01
02
03
….
01#
01!
020
021
….
!!f
!!#
!!!