Individual skill
ics-modbus
Modbus TCP attack — port 502 enumeration, coil/holding-register read/write without auth, function-code abuse (FC8 diagnostic, FC43 read-device-id), Modbus-over-Serial via TCP gateway, write-with-no-confirm DoS, value tampering against PLCs.
packages/decepticon/decepticon/skills/standard/exploit/ics-ot/modbus/SKILL.md
Source commit df879550544d36b6b1e69062f05adae28537adf2
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 8, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 6,567
- Repository last updated
- Nov 7, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- agent Repository topic
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- generative-ai Repository topic
- pentesting Repository topic
- pentest Repository topic
- modbus,-plc,-scada,-ics,-ot Declared skill tag
- engineering Derived category
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# Modbus TCP Attack
Modbus has no authentication and no transport encryption. Port 502 → full PLC control if reachable.
## Discover
```bash
# Scan for port 502
nmap -p 502 --open -sV --script=modbus-discover.nse 10.0.0.0/24
# Or with Shodan / Censys: port:502 country:XX
# Internet-facing Modbus is still depressingly common (search "modbus" on Shodan)
```
