Day 24: Post-Exploitation Mastery — What Happens After Root? 🕵️‍♂️

🛠️ The Post-Exploitation Checklist In a real-world engagement, getting a root shell is temporary. The system might reboot, or the admin might kill your process. You need Persistence. 1. Maintaining Access (Persistence) The SSH Backdoor: Adding an attacker's public key to /root/.ssh/authorized_keys allows for passwordless, permanent remote access. The Cron Persistence: Scheduling a hidden task to send a reverse shell every minute ensures that even if you lose your connection, the system "calls" you back automatically. 2. Credential Harvesting & Shadow Cracking Once you have root, you own the identity store. The Shadow File: Accessing /etc/shadow allows an attacker to dump password hashes for offline cracking using tools like John the Ripper or Hashcat. The History Leak: Always check ~/.bash_history. Users often accidentally type passwords directly into the command line (e.g., mysql -u root -p'password123'). 3. Lateral Movement (Pivoting) Root on one machine is often the key to the