🥷John the Ripper

https://www.kali.org/tools/john/

Windows

john --list=formats | grep NT
john --format=NT hashes.txt

gzip -d /usr/share/wordlists/rockyou.txt.gz
john <Hash_Password-File> --wordlist=/usr/share/wordlists/rockyou.txt # To crack the password from your previous output (hashdump,shadow file )
john --format=NT win_hashes.txt --wordlist=/usr/share/wordlists/rockyou.txt

john -wordlist /usr/share/wordlists/rockyou.txt crack.hash
john -wordlist /usr/share/wordlists/rockyou.txt -users users.txt test.hash

#this is another way to crack passwords (that requires shadow file with passwd file)
unshadow passwd shadow > unshadowed.txt
john --wordlist=/usr/share/wordlists/rockyou.txt unshadowed.txt

Linux

at /etc/shadow

# Metasploit
use post/linux/gather/hashdump

john --format=sha512crypt linux.hashes.txt --wordlist=/usr/share/wordlists/rockyou.txt
john -wordlist /usr/share/wordlists/rockyou.txt crack.hash
john -wordlist /usr/share/wordlists/rockyou.txt -users users.txt test.hash

#Single crack mode
john --single --format=raw-sha1 crack.txt

#Crack the password in file using wordlist
john --wordlist=/usr/share/john/password.lst --format=raw-sha1 crack.txt (Crack.txt here contains the hashes)

#Cracking service credentials like SSH
1. First have to convert the hash file to JOHN format : ssh2john /home/text/.ssh/id_rsa > crack.txt (Now we need to crack this crack.txt file with John The Ripper)
2. john --wordlist=/usr/share/wordlists/rockyou.txt crack.txt

#To crack ZIP
1. zip2john file.zip > crack.txt
2. john --wordlist=/usr/share/wordlists/rockyou.txt crack.txt

#Notes:
–wordlist can be written as -w also
john crack.txt --wordlist=rockyou.txt --format=Raw-SHA256

john | Kali Linux ToolsKali Linux

Other References:

Password Cracking With John The Ripper - RAR/ZIP & Linux Passwords - Video Tutorial

https://linuxconfig.org/password-cracking-with-john-the-ripper-on-linuxlinuxconfig.org

How to crack passwords with John the RipperMedium

How to Use John the Ripper: Tips and TutorialsVaronis