Cracking Passwords Using John the Ripper: A Complete Step-by-Step Guide In today's post, we’re diving into a practical lab exercise that shows how to use John the Ripper, one of the most effective password-cracking tools in cybersecurity. Whether you're an IT professional or a cybersecurity student, mastering John the Ripper will help you understand password vulnerabilities and enhance your penetration testing skills. Lab Objective: The goal of this lab is to crack the root password on a Linux system (Support) and extract the password from a password-protected ZIP file (located on IT-Laptop). Both tasks are performed using John the Ripper. Steps to Crack the Root Password on Support: Open the Terminal on the Support system. Change directories to /usr/share/john . List the files and open password.lst to view common password guesses. Use John the Ripper to crack the root password by running john /etc/shadow . Once cracked, the password is stored in the john.pot file for future u...
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