recon-osint SKILL.md skillA
recon-osint from hypnguyen1209/offensive-claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hypnguyen1209/offensive-claude/recon-osint@git:20260629.9f4a1a5Pins git:20260629.9f4a1a5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hypnguyen1209/offensive-claude
- Path
skills/recon-osint/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260629.9f4a1a5, committed Jun 29, 2026
- First version recorded
- May 28, 2026
- Size
- 8,965 bytes
- Repository stars
- 410
- License
- MIT
Use when mapping a target's external attack surface or gathering OSINT — subdomain enumeration, attack-surface mapping (httpx/katana/JS secrets), subdomain takeover, multi-cloud/Azure tenant recon, GitHub secret dorking, breach/infostealer credential intel, CVE prioritization (EPSS/KEV).
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
# Reconnaissance & OSINT ## When to Activate - A new engagement begins and you need a full external attack-surface map for a set of root domains / ASNs. - Expanding scope: pivoting from one discovered asset (subdomain, IP block, cloud account) to the rest of the estate. - Hunting dangling DNS / subdomain-takeover candidates, including S3 buckets referenced by CI/CD assets. - Building a target profile for social engineering / initial access (emails, usernames, breach + infostealer exposure). - Discovering leaked secrets in public GitHub/GitLab orgs and exposed cloud storage. - Triaging which discovered CVEs actually matter (KEV + EPSS + exposure) before weaponization. ## Technique Map | Technique | ATT&CK | CWE | Reference | Script | |-----------|--------|-----|-----------|--------| | Passive subdomain enum (subfinder/amass/CT logs) | T1590.002, T1596.001 | CWE-200 | references/subdomain-discovery.md | scripts/recon_orchestrator.py | | DNS brute / permutation / resolution (puredns/alterx/dnsx) | T1595.002, T1590.002 | CWE-200 | references/subdomain-discovery.md | scripts/recon_orchestrator.py | …
Read the whole file at its exact version.
How to install
mdr add hypnguyen1209/offensive-claude/recon-osint@sha256:ea057299a384b6f5The line at the top of this page pins the label git:20260629.9f4a1a5, 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_6trrtqldraqbc5ys)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 28, 2026 and Jun 29, 2026, about one every 8 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260629.9f4a1a5 latest | 2026-06-29 | 9f4a1a5 | 8,965 B | A | view · diff |
| git:20260629.82b101d | 2026-06-29 | 82b101d | 9,022 B | A | view · diff |
| git:20260628.d1cc1ce | 2026-06-28 | d1cc1ce | 8,953 B | A | view · diff |
| git:20260528.c97c53b | 2026-05-28 | c97c53b | 10,342 B | A | view · diff |
| git:20260528.6136b32 | 2026-05-28 | 6136b32 | 5,042 B | A | view |
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 (8965 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
hypnguyen1209/offensive-claude · 410 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6trrtqldraqbc5ys GET https://markdownregistry.com/api/v1/resolve?ref=hypnguyen1209/offensive-claude/recon-osint GET https://markdownregistry.com/api/v1/blob/ea057299a384b6f5a466d90889c35313c29b0495ba10bff0d1abfb98848e61c7
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.