Listen to this Post
If you’re serious about OT security, add this to your learning list!
Course URL: https://lnkd.in/e_kdzciP
This course by Mike Holcomb provides a solid foundation for ethically and safely testing Industrial Automation and Control Systems (IACS) environments. It covers:
– Part 1-2: Groundwork and mindset for OT/ICS testing
– Part 3: Comparison with traditional IT pentesting
– Part 4: Dedicated OT/ICS Pentesting Framework
– Part 5-6: Recon, OSINT, and discovering ICS assets
– Part 7-8: Targeted attacks and operational impacts
– Part 9: Writing reports for engineers & executives
– Part 10: Review questions and key takeaways
You Should Know:
Essential OT/ICS Pentesting Commands & Tools
1. Network Scanning (Nmap for ICS Protocols)
nmap -Pn -sT --script modbus-discover.nse -p 502 <target_IP>
Modbus is common in ICS; this detects Modbus TCP devices.
2. PLC Enumeration (PLCScan)
python plcscan.py -i <target_IP> -p 102
Identifies Siemens S7 PLCs using port 102 (S7comm).
3. ICS Protocol Fuzzing (Peach Fuzzer)
peach -p ICS_Modbus.xml -a tcp://<target_IP>:502
Tests for vulnerabilities in Modbus implementations.
4. OSINT for ICS (Shodan Search)
shodan search port:502 "Modbus"
Finds exposed Modbus devices globally.
5. Exploiting ICS Vulnerabilities (Metasploit Modules)
use auxiliary/scanner/scada/modbusdetect set RHOSTS <target_IP> run
Checks for Modbus accessibility.
6. Traffic Analysis (Wireshark Filters for ICS)
tcp.port == 502 || udp.port == 47808
Filters for Modbus (502) and BACnet (47808) traffic.
7. Password Cracking (Hydra for ICS HMIs)
hydra -l admin -P passwords.txt <target_IP> http-post-form "/login.php:user=^USER^&pass=^PASS^:Invalid"
Tests weak credentials on Human-Machine Interfaces (HMIs).
8. Windows ICS Exploits (Mimikatz for Credential Dumping)
Invoke-Mimikatz -Command '"sekurlsa::logonpasswords"'
Extracts credentials from Windows-based ICS workstations.
9. ICS Firewall Bypass (ICMP Tunneling)
sudo ptunnel -p <proxy_IP> -lp 1080 -da <target_IP> -dp 502
Bypasses restrictive firewalls using ICMP.
10. Reporting with Dradis
dradis-pro -b <IP> -p 3000
Organizes findings for executive/engineer reports.
What Undercode Say:
OT/ICS pentesting requires specialized tools and caution to avoid disrupting critical operations. Always:
– Obtain explicit authorization before testing.
– Use isolated lab environments for practice.
– Monitor network impact (e.g., latency spikes).
– Prioritize safety over exploitation—unplanned downtime can be catastrophic.
Key Linux/Windows Commands for ICS Security:
– `snmpwalk -v2c -c public
– `profinet-discovery -i eth0` (Profinet device detection)
– `python CVE-2015-5374.py
– `iec104_client -i
Expected Output:
A structured OT/ICS pentest report with:
1. Asset inventory (IPs, protocols, firmware versions).
2. Vulnerability mappings (CVEs, custom flaws).
3. Risk ratings (impact on physical processes).
4. Mitigation steps (patch management, segmentation).
Reference: https://lnkd.in/e_kdzciP
References:
Reported By: Mavrik51 Ics – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
