hunt-oauth SKILL.md skillA

hunt-oauth from novaestellar/novahaku is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add novaestellar/novahaku/hunt-oauth@git:20260910.546fe86

Pins git:20260910.546fe86 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: novaestellar/novahaku
Path: testing/hunt/hunt-oauth/SKILL.md
Versions recorded: 3
Latest version: git:20260910.546fe86, committed Sep 10, 2026
First version recorded: Sep 3, 2026
Size: 28,802 bytes
Repository stars: 28
License: MIT

Hunting skill for oauth vulnerabilities. Built from 19 public bug bounty reports. Use when hunting oauth on any target.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

## Crown Jewel Targets

OAuth vulnerabilities are among the highest-value bug classes in web security because they directly enable **account takeover, session theft, and authentication bypass** — the trifecta that programs pay most for.

**Highest-value targets:**
- **Consumer identity providers** (Google, Facebook, PayPal, Apple SSO integrations) — any compromise cascades across all relying parties
- **Mobile apps with custom deep link OAuth handlers** — Android/iOS intent handling is notoriously loose
- **Multi-tenant SaaS platforms** (GitLab, Reddit-scale apps) where one OAuth flaw hits millions of accounts
- **Gaming/entertainment platforms** with federated login (Rockstar, Oculus) — often security-immature teams
- **Enterprise SSO connectors** — critical infrastructure, high severity payouts

**Asset types that pay most:**
- OAuth authorization endpoints (`/oauth/authorize`, `/connect/authorize`)
- Token exchange endpoints (`/oauth/token`)
- Mobile deep link handlers (`push_notification_webview`, custom scheme URIs)
- Social login callback handlers (`/auth/callback`, `/oauth/callback`)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add novaestellar/novahaku/hunt-oauth@sha256:afb34af40acc0719

The line at the top of this page pins the label git:20260910.546fe86, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_yz3cq67mdvgq4phu.svg)](https://markdownregistry.com/a/art_yz3cq67mdvgq4phu)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Sep 3, 2026 and Sep 10, 2026, about one every 3 days.

version	committed	commit	size	audit
git:20260910.546fe86 latest	2026-09-10	546fe86	28,802 B	A	view · diff
git:20260903.29924dd	2026-09-03	29924dd	28,814 B	A	view · diff
git:20260903.fa855c4	2026-09-03	fa855c4	28,785 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (28802 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

novaestellar/novahaku · 28 stars · license MIT · pushed 2026-09-28 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_yz3cq67mdvgq4phu
GET https://markdownregistry.com/api/v1/resolve?ref=novaestellar/novahaku/hunt-oauth
GET https://markdownregistry.com/api/v1/blob/afb34af40acc0719a67e7f22e12dbaf44acf430301e9d572166b8708a10f926c

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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