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邮件安全

用于授权邮件安全审查,包括钓鱼分析、头认证(SPF/DKIM/DMARC)、BEC模式以及邮箱令牌滥用研究。

邮件安全 是什么?

该技能专注于邮件安全领域,为安全分析师或AI代理提供一套结构化工作流,用于对授权电子邮件进行深度安全审查。它涵盖了从邮件头认证(如SPF、DKIM、DMARC对齐检查)到内容分析(包括URL沙箱、附件静态分析)以及商务邮件欺诈(BEC)模式识别的全过程。该技能不仅支持端到端的钓鱼邮件拆解与IOC提取,还深入评估租户的邮件安全配置(如反钓鱼策略、MFA设置和OAuth应用许可),帮助发现潜在的令牌滥用风险。在主流AI代理平台上,该技能通过结合DNS查询、URL扫描、沙箱分析和租户管理中心的策略配置来实现自动化或半自动化的安全审计。最终,技能要求输出完整的任务自检清单,确保头认证结论完整且IOC可被检测及联动威胁狩猎。

兼容平台~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/zhaoxuya520/reverse-skill/tree/main/skills/email-security

在你喜欢的 AI 中提问

打开一个已预加载此 Agent Skill 的新对话。

文档

邮件安全与钓鱼分析

行动要求(读完后立刻执行)

  1. 现在:确认授权(分析样本邮件 / 租户配置评审)
  2. 现在:不向真实用户二次投递恶意样本
  3. 行动:头认证 → 内容/URL → 附件沙箱 → 租户控制面建议

适用场景

  • 钓鱼邮件拆解与IOC
  • SPF/DKIM/DMARC 配置评估
  • BEC 商务邮件欺诈模式
  • OAuth 应用钓鱼 / 邮箱令牌滥用(联合llm/cloud身份)
  • 安全意识演练设计(授权)

工作流

□ 完整原始头:Received 链、From/Return-Path 一致性
□ SPF/DKIM/DMARC 对齐结果
□ URL 沙箱与附件静态(联合malware-analysis)
□ 仿冒品牌与回复地址差异
□ 租户:反钓鱼策略、外部标记、MFA、OAuth app 同意

工具链

工具用途
邮件客户端「查看源」头
dig/nslookupSPF/DMARC 记录
urlscan / 沙箱链接与附件
租户管理中心策略

参考

  • references/email-auth-checklist.md
  • ../malware-analysis/ ../attack-chain/(钓鱼阶段) ../windows-ad/(令牌)

路由上下文

上游: MASTER R36
禁止: 未授权对第三方域群发测试钓鱼

任务完成自检

  • 头认证结论是否完整?
  • IOC 是否可检测化(联合threat-hunting)?
  • Checklist?

Individual skills in this repo

This repo contains 20 individual skills — each has its own dedicated page.

api-security

Use for authorized security assessment of REST, GraphQL, WebSocket, or SOAP APIs, including discovery, authentication, authorization, rate-limit, and CI/CD testing.

apk-reverse

在 CLI 环境下做 Android APK 逆向时使用。适用于 APK 解包、Java 反编译、smali 修改、重打包、Frida 动态 Hook,以及按需切换到 so/native 分析。优先使用本机已安装的 jadx、apktool、frida、adb、ida-reverse、radare2。

attack-chain

Use for authorized multi-stage attack-path planning and orchestration when a task spans reconnaissance, initial access, privilege escalation, lateral movement, or impact assessment. Route single-stage tasks directly to their specialist skill.

binary-diff

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binary-ninja-reverse

Use for authorized binary analysis in Binary Ninja, including HLIL/MLIL/LLIL inspection, strings/imports/exports, cross-references, types, patch review, Python API automation, and optional Binary Ninja MCP or localhost HTTP integration.

browser-automation

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browser-extension-reverse

Use for authorized reverse engineering of browser extensions (Chrome/Firefox) including manifest analysis, background workers, and extension-based credential or traffic logic recovery.

case-review

Reviews a reverse-skill case package for scope readiness, Evidence to Finding to Path traceability, work item coverage, timeline references, and optional artifact hash integrity before report handoff.

cloud-k8s

Use for authorized cloud, container, and Kubernetes security assessment including metadata SSRF, IAM misconfig, container escape paths, and cluster RBAC review.

code-audit

Use for authorized source-code security review and SAST workflows including Semgrep, CodeQL patterns, dangerous API hunting, and fix verification.

ctf-sandbox

Thin PRIMARY for CTF / AWD / 靶场 multi-type orchestration. Hands off to the sidecar CTF-Sandbox-Orchestrator. Use when the user says CTF, AWD, 靶场, or 比赛题 and no more specific pwn/APK/IDA route already won.

database-security

Use for authorized database security assessment covering PostgreSQL/MySQL/MSSQL/Mongo/Redis exposure, authz, UDF/command paths, and misconfiguration review.

diagram-generator

generate, refine, validate, and render diagrams from natural language, notes, code snippets, schemas, tables, or existing diagram source. use for flowcharts, swimlanes, sequence diagrams, state diagrams, er diagrams, class diagrams, architecture/c4-style diagrams, dependency graphs, gantt charts, mind maps, user journeys, sankey-style flows, org charts, network graphs, and other visual models. supports mermaid by default, graphviz dot for complex graph layout, plantuml for uml-heavy engineering diagrams, and svg output when direct markup is more reliable.

digital-forensics

Use for authorized digital forensics including memory dumps, disk timelines, PCAP investigation, artifact triage, and IR evidence preservation.

docs-generator

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dotnet-reverse

.NET / C# 二进制逆向。当目标是 .NET assembly(PE 头含 CLR、.exe/.dll 托管程序)、C# 编译产物(含 NativeAOT)、红队 Sharp* 工具(Rubeus / SharpHound / SharpHound 等)、.NET 混淆程序(ConfuserEx / SmartAssembly / Babel / Eazfuscator)、.NET loader / info-stealer / 套壳 malware 时使用。优先用 dnSpyEx + de4dot,需要 AI 直接操作时联动 dnSpy MCP。不用于纯 native 二进制(走 reverse-engineering / ida-reverse)。

edr-bypass-re

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firmware-pentest

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ghidra-reverse

Use for free/open reverse engineering with Ghidra (headless or GUI), including decompile, cross-refs, and optional Ghidra MCP workflows when IDA is unavailable.

go-rust-reverse

Use for reverse engineering stripped Go and Rust binaries including runtime recognition, pclntab/moduel data recovery, panic strings, and idiomatic decompilation recovery.

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