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external-enumeration

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Passively map a company's domains, subdomains, DNS ownership, tech stack, and CDNs. Use to recon an external attack surface or enumerate subdomains.

skills/hunter-utils/external-enumeration/SKILL.md

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# External Enumeration Skill

You are performing **passive external reconnaissance** on a target company's domain infrastructure.
Goal: produce a comprehensive, structured map of all domains, subdomains, technology stack, and notable security observations - using only passive/OSINT techniques (no active exploitation).

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## Phase 0 - Scope Clarification

Ask the user for:
1. **Primary domain(s)** to enumerate (e.g. `example.com`)
2. **Known subsidiaries or related companies** (acquisitions, brand names, sister domains)
3. **Output format** - markdown report to a file path?
4. **Depth** - quick pass (passive DNS only) or deep pass (stealth browser + port scan)?
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