Lab – Password Cracking Objectives Use a password cracking tool to recover a user’s password. Background / Scenario There are four user accounts, Alice, Bob, Eve, and Eric, on a Linux system. You will recover these passwords using John the Ripper, an open source password cracking tool. Required Resources • PC with Ubuntu 16.04 Desktop LTS installed in a VirtualBox or VMware virtual machine. Step 1: Open a terminal window in Ubuntu. a. Log in to Ubuntu using the following credentials: User: cisco Password: password b. Click on the terminal icon to open terminal. Step 2: Run John the Ripper. a. At the command prompt, enter the following command to change to the directory where John the Ripper is located: [email protected]:~$ cd ~/Downloads/john-1.8.0/run © 2016 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 1 of 3
Lab - Password Cracking b. At the command prompt, enter the following command : [email protected]:~/Downloads/john- 1.8.0/run$ sudo ./unshadow /etc/passwd /etc/shadow > mypasswd
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- Fall '15
- following command, Password cracking, John the Ripper