John

Commands

Formats

john --list=formats

Crack SHA1

john  --format=raw-sha1 hash.txt

Crack MD5

john --format=raw-md5 hash.txt

Cracking Shadow Files

# Unshadow
unshadow passwd.txt shadow.txt > unshadowed.txt

# John
john /etc/shadow

# Wordlist
john --wordlist=<password.txt> /etc/shadow

Cracking Zip Files

# Zip to John
zip2john file.zip > ziphash.txt

# John
john --format=zip ziphash.txt

Crack .pfx File

pfx2john <pfx file> > hash.txt

john hash.txt --wordlist=<wordlist location>

Crack GPG Passphrase

Read More Here

gpg2john priv.key > hash 

john hash --wordlist=/usr/share/wordlists/rockyou.txt 

Crack SSH Passphrase

ssh2john /home/chinju/.ssh/id_rsa > ssh_hash.txt

john ssh_hash.txt --wordlist=/usr/share/wordlists/rockyou.txt

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REFERENCES

• https://blog.atucom.net/2015/08/cracking-gpg-key-passwords-using-john.html

• https://cheatsheet.haax.fr/passcracking-hashfiles/john_cheatsheet/

• https://countuponsecurity.com/wp-content/uploads/2016/09/jtr-cheat-sheet.pdf

• https://null-byte.wonderhowto.com/how-to/crack-ssh-private-key-passwords-with-john-ripper-0302810/