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Labshock delivers a live master lab for ICS/OT security, simulating attacks on Modbus-enabled industrial systems. This hands-on training covers:
– Discovering virtual PLCs
– Scanning & mapping Modbus networks
– Enumerating memory addresses
– Simulating coil flipping & register writes
– MitM (Man-in-the-Middle) tactics
– Traffic analysis
🔗 Join the Lab: https://lnkd.in/dBxJYpAc
You Should Know: Practical Modbus/OT Security Commands
1. Discovering PLCs (Network Scanning)
nmap -sV --script modbus-discover -p 502 <target_IP>
– Scans for Modbus-enabled devices (port 502).
2. Enumerating Modbus Registers
mbpoll -a 1 -r 1 -c 10 -t 4 <target_IP>
– Reads 10 holding registers starting at address 1.
3. Simulating Coil Flipping (Write Attacks)
mbpoll -a 1 -r 0 -t 0 -c 1 <target_IP> -0
– Writes to coil 0 (OFF). Change `-0` to `-1` for ON.
4. Man-in-the-Middle (MitM) with Bettercap
sudo bettercap -iface eth0 --modbus --modbus-target <PLC_IP>
– Intercepts Modbus traffic between PLC and HMI.
5. Traffic Analysis with Wireshark
wireshark -k -Y "modbus" -i eth0
– Filters Modbus TCP packets for inspection.
6. Simulated PLC with Python
from pyModbusTCP.server import DataBank, Server server = Server(host="0.0.0.0", port=502) server.start()
– Runs a virtual PLC for testing.
What Undercode Say
Industrial Control Systems (ICS) are high-value targets. Understanding Modbus vulnerabilities helps defenders:
– Detect unauthorized writes (mbpoll -0/-1).
– Monitor network anomalies (Wireshark + Modbus filters).
– Simulate attacks safely (Bettercap, Python PLC).
🔗 Labshock Update: https://lnkd.in/dBxJYpAc
Prediction
As OT/IT convergence grows, Modbus exploits will rise. Expect more AI-driven traffic analysis tools to detect anomalies in ICS networks.
Expected Output:
Modbus register dump (mbpoll): Address 0x0001: 0x00A3 Address 0x0002: 0x1F00 ... Wireshark capture: [bash] Modbus Write Coil (0x05) to PLC 192.168.1.10
IT/Security Reporter URL:
Reported By: Zakharb Ever – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
