Individual skill
hunt-subdomain
Hunting skill for subdomain takeover vulnerabilities. Includes modern provider fingerprints — Microsoft Azure DevOps `cloudapp.azure.com` regional-pool re-issue (1-click OAuth ATO via wildcard `reply_to`, Binary Security), Zendesk help-desk takeover → email interception → password reset chain (0xprial writeup), Vercel `cname.vercel-dns.com` deleted-project takeover, plus general Fastly CDN service re-attach and S3 dangling-bucket cookie-scope techniques. Use when hunting subdomain takeover — emphasis on ATO-chain primitives (OAuth `redirect_uri`, cookie-domain, email DNS).
redteam/hunt-subdomain/SKILL.md
Source commit 1260244136edc6ae698d76d3d526f503e322778d
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
Install this skill
Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.
An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.
Repository context
- Repository stars (not skill ratings)
- 1,346
- Repository last updated
- Nov 7, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- bug-bounty Repository topic
- cloud-security Repository topic
- firebase-hacking Repository topic
- hermes-agent Repository topic
- jwt-attacks Repository topic
- offensive-security Repository topic
- penetration-testing Repository topic
- reconnaissance Repository topic
- red-team Repository topic
- security-automation Repository topic
- subdomain Declared skill tag
- hunt Declared skill tag
- redteam Declared skill tag
- devops Derived category
- security Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Browse files
SKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytesSKILL.mdcore · 26,741 bytes
Read excerpt
## 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