Claude 24f816b6a3
Consolidate 22 sibling repos into layered organism structure
Place useful parts of the surrounding repos into sica-fondt by layer, per the
body model (Ada = membrane; brain/endocrine/capabilities/knowledge non-Ada):

- brain/        LLM reasoning + providers (dapr, hermes, MoMoA)
- capabilities/ REPRAG sidecars: hermes tools/skills, dapr tools, parallel
                dispatch, A51 channels, and the OSINT cluster
- knowledge/    LORAG corpus: 754 cyber-skills, agency personas, secure-coding,
                MITRE ATT&CK data
- reference/    defensive threat-reference (C3, shhbruh doc) + AdaYaml parser

License handling: AGPL sources (worldosint, advanced_evolution, mercury,
Reticulum) and GPL DeTTECT are SPEC-only clean-room/port descriptions — no
copyleft code copied. MIT/Apache/data parts copied as working trees.

Safety: shhbruh escape/persistence material and C3 covert-C2 kept as reference
only, not wired into the running organism. See CONSOLIDATION.md.

https://claude.ai/code/session_01UehUqEXXJJCsHoA4voCU5c
2026-06-10 06:53:01 +00:00

1.6 KiB

API Reference: Detecting Modbus Command Injection Attacks

Modbus Function Codes

Code Function Risk
1 Read Coils Read
3 Read Holding Registers Read
5 Write Single Coil Write (dangerous)
6 Write Single Register Write (dangerous)
15 Write Multiple Coils Write (dangerous)
16 Write Multiple Registers Write (dangerous)
8 Diagnostics Diagnostic

Zeek Modbus Log

#fields ts uid id.orig_h id.orig_p id.resp_h id.resp_p func

Suricata Modbus Rules

alert modbus any any -> any 502 (msg:"Modbus Write Coil"; \
  modbus: function 5; sid:3000001;)
alert modbus any any -> any 502 (msg:"Modbus Write Multiple Registers"; \
  modbus: function 16; sid:3000002;)

pymodbus Library

from pymodbus.client import ModbusTcpClient

client = ModbusTcpClient("192.168.1.100", port=502)
client.connect()
result = client.read_holding_registers(0, 10, slave=1)
print(result.registers)
client.close()

Scapy Modbus Parsing

from scapy.contrib.modbus import ModbusADURequest
from scapy.all import rdpcap

pkts = rdpcap("modbus.pcap")
for pkt in pkts:
    if pkt.haslayer(ModbusADURequest):
        print(f"Function: {pkt.funcCode}")

Detection Thresholds

Anomaly Threshold Severity
Write flood >20 writes/60s CRITICAL
Unknown function code Any HIGH
Unauthorized master Not in allowlist CRITICAL

CLI Usage

python agent.py --zeek-log modbus.log
python agent.py --zeek-log modbus.log --authorized-masters 10.0.0.1 10.0.0.2