Brunn at 17:01, 2 May 2025

2025-05-02T17:01:03Z

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	[[Category:Tools]]		[[Category:Tools]]
			[[Category:Cracking Tools]]

Brunn at 17:00, 2 May 2025

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	In Kali Linux installations, wordlists may be found using the following command ([https://www.kali.org/tools/wordlists/ source])		In Kali Linux installations, wordlists may be found using the following command ([https://www.kali.org/tools/wordlists/ source])
	wordlists		wordlists


			[[Category:Tools]]

The.mikkel: Created page with "== John the Ripper == '''John the Ripper''' (often shortened to '''JtR''') is a widely used, powerful password cracking tool. It is designed to detect weak Unix passwords, but it also supports hundreds of hash and cipher types, including many commonly found in software and files (like zip files, rar files, and pdfs). It is an essential tool in cracking challenges in CTFs, often used to: * Crack password hashes found in various formats. *..."

2025-04-30T21:11:27Z

Created page with "== John the Ripper == '''John the Ripper''' (often shortened to '''JtR''') is a widely used, powerful password cracking tool. It is designed to detect weak Unix passwords, but it also supports hundreds of hash and cipher types, including many commonly found in software and files (like zip files, rar files, and pdfs). It is an essential tool in cracking challenges in CTFs, often used to: * Crack password hashes found in various formats. *..."

New page

== John the Ripper ==

'''John the Ripper''' (often shortened to '''JtR''') is a widely used, powerful password cracking tool. It is designed to detect weak Unix passwords, but it also supports hundreds of hash and cipher types, including many commonly found in software and files (like [[zip]] files, [[rar]] files, and [[pdf]]s).

It is an essential tool in [[Cracking Tools|cracking]] challenges in CTFs, often used to:
* Crack password hashes found in various formats.
* Recover passwords for encrypted files (ZIP, RAR, PDF, etc.).
* Perform dictionary attacks or brute-force attacks against weak passwords.

=== Basic Usage Examples ===

==== Cracking a Password Hash ====
To crack a hash stored in a file named ''hashes.txt'' using a common wordlist (like the built-in ''rockyou.txt'' or one you provide):
john hashes.txt --wordlist=/path/to/your/wordlist.txt

John will attempt to crack the hashes and will display any cracked passwords. You can view previously cracked passwords with:
john --show hashes.txt

==== Cracking a Password-Protected Zip File ====
First, you need to extract the hash from the zip file using a specific John tool called ''zip2john''. Then, feed the output to John:
zip2john challenge.zip > challenge.zip.hash
john challenge.zip.hash --wordlist=/path/to/your/wordlist.txt

Replace ''challenge.zip'' with the name of your zip file. This process is similar for other file types like RAR (using ''rar2john'') and PDF (using ''pdf2john'').

Remember that the effectiveness of cracking depends heavily on the strength of the password and the quality of the wordlist used.

==== Wordlists ====

In Kali Linux installations, wordlists may be found using the following command ([https://www.kali.org/tools/wordlists/ source])
wordlists

John the Ripper - Revision history

Brunn at 17:01, 2 May 2025

Brunn at 17:00, 2 May 2025