Attacking ICS Plant - TryHackMe Writeup

Industrial Control Systems (ICS/SCADA) exploitation, Modbus protocol abuse, and HMI takeover.

🖥️ Challenge / Machine Info

  • Platform: tryhackme
  • Name / Title: attacking-ics-plant
  • Difficulty: Hard
  • Target OS / Environment: Web
  • Key Vulnerability Focus: SCADA / Modbus protocol abuse

ICS Attack Vector

  1. Reconnaissance: Scanning for industrial ports (e.g. port 502 for Modbus).
  2. HMI Takeover: Exploiting default passwords on the Human-Machine Interface (HMI) web control panel.
  3. Modbus Protocol Abuse: Sending direct Modbus write commands to alter PLC registers, simulating physical control overrides.