![]() Case 6: Lowercase alphabet (a,b or c) + number (1,2 or 3) + symbol (ANY).Case 3: Fixed word + 3 lowercase alphabets.Case 2: Fixed word + 3 uppercase alphabets.In this article, we’ll demonstrate crunch filters in detail. It takes in min size, max size and alphanumeric character sets as input and generates any possible combination of words with or without meaning and writes it out in a text file. Crunch is a tool developed in C by bofh28 that can create custom, highly modifiable wordlists that may aid an attacker in the situations mentioned above. Other times it could be a trivial situation like directory enumeration. Often times attackers have the need to generate a wordlist based on certain criteria which are required for pentest scenarios like password spraying/brute-forcing.
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