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
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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
