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Ot Ics

ASecurity

Use for authorized OT/ICS security assessment covering Purdue model zoning, PLC/SCADA exposure, industrial protocol discovery, and safe passive-first evaluation.

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  • Added September 23, 2026
ai-agentssecurity

Security analysis

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Scanned September 23, 2026

npx -y skills add coco-research/coco --skill ot-ics --agent claude-code

Installs into .claude/skills of the current project.

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SKILL.md
---
name: ot-ics
description: Use for authorized OT/ICS security assessment covering Purdue model zoning, PLC/SCADA exposure, industrial protocol discovery, and safe passive-first evaluation.
user-invocable: true
---

# OT / ICS Security

## 适用场景

- 工控/SCADA/DCS 安全评估(授权)
- Purdue 模型分区与跨区通道
- Modbus/DNP3/S7/EtherNet/IP 等协议暴露
- 工程师站、HMI、历史库、跳板主机
- IT/OT 融合边界(防火墙规则、单向闸)

## 安全铁律(MUST)

```text
MUST NOT 在未明确允许时:
- 对 PLC 写线圈/寄存器
- 全网高速率扫描生产 OT
- 中断安全仪表系统(SIS)相关路径
优先:只读识别、流量镜像、离线固件/配置分析
```

## 工作流

### Phase 1 — 分区与资产

```text
□ Purdue L0–L5 草图:现场设备 → 控制 → 监督 → 站点 DMZ → 企业
□ 资产清单:PLC/RTU/HMI/工程师站/历史库/Jump host
□ 协议与端口基线(仅授权网段)
```

### Phase 2 — 被动与只读

```text
□ SPAN/镜像 PCAP → protocol-reverse / Wireshark 工控解析器
□ 配置与工程文件离线审计(TIA/RSLogix 导出等)
□ 默认口令与明文协议(Modbus 无认证)记录为 Finding,不写盘改值
```

### Phase 3 — 受限主动(仅授权)

```text
□ 低速识别,维护窗口
□ 只读功能码优先
□ 每步 Evidence;异常立即停止并通报
```

### Phase 4 — 固件/补丁面

```text
□ 控制器固件版本 → CVE 映射(不盲刷固件)
□ 联合 firmware-pentest 做离线镜像分析
```

## 工具链

| 工具 | 用途 | 注意 |
|------|------|------|
| Wireshark 工控 dissectors | 被动解析 | 镜像流量 |
| Nmap NSE(受限) | 识别 | 速率与时间窗 |
| Claroty/Nozomi 等 | 资产发现 | 商业/现场 |
| PLC 厂商工程软件 | 配置审计 | 离线优先 |
| binwalk / Ghidra | 固件 | 离线 |

## 参考

- `references/ot-safe-assessment.md`
- `../firmware-pentest/` `../protocol-reverse/` `../network` via pentest-tools

Files in this skill

  • SKILL.md2 KB
  • references/ot-safe-assessment.md411 B

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