hunt-subdomain SKILL.md skillA
hunt-subdomain from adriannoes/awesome-agentic-ai is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add adriannoes/awesome-agentic-ai/hunt-subdomain@git:20260611.ff4cc7cPins git:20260611.ff4cc7c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- adriannoes/awesome-agentic-ai
- Path
cursor-claude-codex/skills/bug-hunter/skills/hunt-subdomain/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260611.ff4cc7c, committed Jun 11, 2026
- Size
- 13,616 bytes
- Repository stars
- 69
- License
- MIT
Hunting skill for subdomain vulnerabilities. Built from 11 public bug bounty reports. Use when hunting subdomain 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 Subdomain takeover is high-value because it allows an attacker to serve content from a **trusted, company-owned domain** — bypassing browser same-origin trust, phishing filters, and user skepticism simultaneously. **Highest payout contexts:** - Subdomains of major SaaS brands (Shopify, Snapchat, Mozilla, Yelp) where the trusted domain has user session context - CDN-backed subdomains (Fastly, CloudFront) where CNAME points to unclaimed origins - Third-party service integrations: UserVoice, WordPress.com, GitHub Pages, GitLab Pages, Heroku, Zendesk - Preview/staging/dev subdomains (`new.`, `preview.`, `course.`, `delivery.`, `addons-preview.`) — abandoned after feature launches - Subdomains used for OAuth redirect URIs or SSO endpoints — these pay highest **Asset types that matter most:** - CNAME records pointing to deprovisioned third-party services - NS delegations to abandoned zones - A records pointing to unallocated cloud IPs (less common) - GitLab/GitHub Pages with unclaimed project namespaces --- ## Attack Surface Signals **DNS signals:** …
Read the whole file at its exact version.
How to install
mdr add adriannoes/awesome-agentic-ai/hunt-subdomain@sha256:ad6e2afab3b23131The line at the top of this page pins the label git:20260611.ff4cc7c, 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.
[](https://markdownregistry.com/a/art_csw4veftw5mruud6)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jun 11, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (13616 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
adriannoes/awesome-agentic-ai · 69 stars · license MIT · pushed 2026-10-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_csw4veftw5mruud6 GET https://markdownregistry.com/api/v1/resolve?ref=adriannoes/awesome-agentic-ai/hunt-subdomain GET https://markdownregistry.com/api/v1/blob/ad6e2afab3b23131197c3e2145f9c67e988deb363f2ce2108efdd74e30d286f6
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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