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Skill

/ot-ics

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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reverse-skill
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$ npx -y skills add zhaoxuya520/reverse-skill --skill ot-ics --agent claude-code

How it fires

How this skill gets triggered: by you, by Claude, or both.

  • Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.Auto-invocation is when the right skill fires by itself at the right moment, driven by a FLOW.md router and a hook, instead of you invoking it by name. It is the difference between a skill being installed and a skill actually getting used.Read the full definition →
  • You can call itInvoke it directly when you want it.
  • Slash command/ot-ics

Context preview

The summary Claude sees to decide when to auto-load this skill.

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

SKILL.md

ot-ics.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.

OT / ICS Security

ACTION REQUIRED(读完后立刻执行)

1. `NOW`: 读取 `../field-journal/precedent-pentest.md` — **工控环境误操作可致物理危害** 2. `NOW`: 书面授权必须写清:站点、网段、是否允许主动扫描/写寄存器 3. `NOW`: case-init;默认 **passive-first**;`ready_for_act` 前禁止对 PLC 写操作 4. `NEXT`: tool-index;多数工控工具需手动与隔离实验网 5. `ACT`: 资产与分区识别 → 暴露面 → 只读验证

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)

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

□ 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

□ 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)

□ 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

□ 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

路由上下文

**上游**: MASTER R28 **下游**: 固件深挖 `firmware-pentest`;协议 `protocol-reverse`;IT 横向 `windows-ad`/`attack-chain` **同级**: 不要用普通 Web 扫默认参数打 OT

任务完成自检

  • [ ] 是否默认被动/只读并记录授权边界?
  • [ ] 是否避免对控制回路写操作(除非明确允许)?
  • [ ] Finding 是否含物理/过程影响说明?
  • [ ] Checklist / journal?
Read more
Ships withreverse-skill

Reverse Engineering / Authorized Penetration Testing / Security Research Skill Router Pack AI-powered routing + On-demand toolchain bootstrapping + Self-evolving knowledge base Supports Claude Code, Kiro, Cursor, Cline, and other AI coding clients 逆向/渗透/安全技能路由包 - AI 自动路由 + 按需自举工具链 + 自动进化经验库 | 支持 Claude Code / Kiro / Cursor / Cline 等代码 AI 客户端

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Repo: zhaoxuya520/reverse-skill

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