Login
SSH: ssh [email protected] -p 2220
Challenge URL: https://overthewire.org/wargames/bandit/bandit23.html
Task
A program is running automatically at regular intervals from cron, the time-based job scheduler. Look in /etc/cron.d/ for the configuration and see what command is being executed.
Solution
Print the shell script. Since this will run as bandit23, whoami will give bandit23 - so to get the mytarget value, copy the command and replace myname with bandit23 so it will hash it with bandit23 as the user. Then cat the output in the /tmp folder:
echo I am user bandit23 | md5sum | cut -d ' ' -f 1
cat /tmp/output_of_above_command