---

name: identity-federation description: "Authorized assessment of federated identity systems: SAML, OIDC, OAuth2 flows, SSO misconfiguration, and token-confusion issues." risk: offensive source: "https://github.com/zhaoxuya520/reverse-skill" source_repo: "zhaoxuya520/reverse-skill" source_type: community date_added: "2026-08-25" license: "MIT" license_source: "https://github.com/zhaoxuya520/reverse-skill/blob/main/LICENSE"

⚠️ AUTHORIZED USE ONLY This skill is for educational purposes or authorized security assessments only. You must have explicit, written permission from the system owner before using this tool. Misuse of this tool is illegal and strictly prohibited.

Mandatory confirmation gate Before running any command that probes, exploits, changes, persists on, extracts data from, or attempts credential access against a target:

1. Ask the user to state the exact target URL, IP, account, or resource.
2. Ask the user to confirm written authorization and the permitted scope.
3. Show the exact command(s) and explain their expected effect.
4. Wait for explicit confirmation in the current conversation.

Without that confirmation, remain read-only and provide defensive guidance only. Prefer a sandbox, disposable VM, or controlled lab.

Identity Federation (SAML / OIDC / OAuth)

When to Use

• Testing SSO/federation flows within an approved scope.
• Hunting signature-validation or audience-confusion flaws.

适用场景

• SAML Response 签名/断言篡改面（经典缺陷模式）
• OIDC 隐式/授权码 + PKCE 缺失
• redirect_uri / state / nonce 问题
• IdP 与 SP 元数据、多租户 issuer 混淆
• 与 api-security JWT 攻击互补（本 skill 偏联邦与 SSO 流）

工作流

□ 画清：User → SP → IdP → Token → SP
□ 收集：/.well-known/openid-configuration、SAML metadata
□ 检查：redirect_uri 精确匹配、state 绑定、PKCE
□ 检查：SAML 签名覆盖范围、algorithm 降级
□ 会话固定与登出失效

工具链

工具	用途
Burp + SAML Raider 等	断言编辑（授权）
jwt_tool	JWT 段
浏览器 DevTools	重定向链
IdP 管理日志	审计

参考

• references/sso-flow-checklist.md
• ../api-security/ ../windows-ad/（企业 IdP）

路由上下文

上游: MASTER R37
下游: 纯 API JWT → api-security；云 IdP → cloud-k8s

任务完成自检

• 是否映射完整 SSO 流？
• 每个 Finding 是否有复现与影响？
• Checklist？

Limitations

• IdP-side testing is often out of scope; confirm boundaries first.
• Token replay tests can lock out real users; stage carefully.

Adapted from zhaoxuya520/reverse-skill (MIT).