What is hunt-federation?

A guide for testing OAuth and SAML login systems. OAuth lets applications delegate sign-in or access, while SAML carries signed login assertions between an identity provider and a service.

Use it to test redirect URLs, login-state protection, SAML signature handling, wrapped assertions, comment injection, and other single-sign-on paths.

It helps find weaknesses that can redirect login codes, bypass signature checks, or let attackers alter how an account is identified.

hunt-federation — Skill for Claude Code and Codex by Encod3d-Sec

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add Encod3d-Sec/TORCH --skill hunt-federation

Clone the repo

git clone --depth 1 https://github.com/Encod3d-Sec/TORCH

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/encod3d-sec/torch/hunt-federation/github.svg)](https://agentmods.dev/skills/encod3d-sec/torch/hunt-federation)

Your own site

<a href="https://agentmods.dev/skills/encod3d-sec/torch/hunt-federation"><img src="https://agentmods.dev/badge/skills/encod3d-sec/torch/hunt-federation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/encod3d-sec/torch/hunt-federation"><img src="https://agentmods.dev/badge/skills/encod3d-sec/torch/hunt-federation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,839 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 3 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

high Prompt Injection · line 45
Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.

Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
high Privilege Escalation · line 79
Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
high Privilege Escalation · line 98
Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00045	$0.01839
Opus 5	$0.00023	$0.00920
Sonnet 5	$0.00009	$0.00368
Haiku 4.5	$0.00005	$0.00184

Measured 10d ago against content hash 2d836e48ee62, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

hunt-federation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/hunt/hunt-federation/SKILL.md · 162 lines

How it starts

The opening of the file, as written. The whole thing — 162 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Hunt: OAuth / SAML / Federation

Assumes hunt-core for the scope gate, two-account rule, confirmation gate, enumeration limits, stop conditions, wiki protocol, FIND output, and Deadends. Do not re-derive any of that here.

Wiki

qmd_query "OAuth SAML federation redirect_uri bypass XSW signature stripping state CSRF" via wiki-search MCP

Hub: [[web-moc]] (live index). Primary page: [[oauth-attacks]]. Payload arsenal: wiki/payloads/oauth-saml.md. Anchors: [[saml-attacks]].

Attack surface

Entry points:

/oauth/authorize  /oauth/token  /oauth/callback  /auth/callback
/saml/  /saml/acs  /sso/saml  /auth/saml/callback
/login?redirect_uri=  /signin?next=

Rank before testing - most federation payouts come from the top of this list:

redirect_uri handling - highest yield. This is where the code/token is delivered; a permissive match leaks it to an attacker origin and chains straight to ATO.
Signature validation - is the assertion signature checked at all, and does it cover exactly what the parser reads (stripping, comment injection live here).
The XSW1-XSW8 matrix - signature covers a signed element, the SP trusts a wrapper assertion. Automate the eight variants with SAML Raider.
state / CSRF - a missing or client-only state on the OAuth callback enables login-CSRF and attacker-to-victim account linking.
OIDC metadata and client leakage - .well-known/openid-configuration, JS bundles, APK resources: leaked client_secret, extra grant types, unadvertised endpoints.

SAML Attacks

Attack 1: XSW - Signature Wrapping

<!-- Original: legit assertion by [email protected] -->
<!-- Modified: inject evil assertion with [email protected] before the signed one -->
<saml:Response>
  <saml:Assertion ID="evil">
    <NameID>[email protected]</NameID>  <!-- Attacker-controlled -->
  </saml:Assertion>
  <saml:Assertion ID="legit">
    <NameID>[email protected]</NameID>
    <ds:Signature><!-- Valid, covers ID=legit --></ds:Signature>
  </saml:Assertion>
</saml:Response>

Use SAMLRaider Burp extension for automated XSW1-XSW8 testing.

Read the full file on GitHub · 162 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

10d ago First seen · 162 lines · 45 tokens per session scan A 2d836e48ee62

Subscribe to this mod's changes

hunt-federation is a skill published in the GitHub repository Encod3d-Sec/TORCH (319 stars, last pushed 8d ago), licensed MIT. It adds 45 tokens to every session and 1,839 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Security

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