Provides open source intelligence techniques for CTF challenges. Use when gathering information from public sources, social media, geolocation, DNS records, username enumeration, reverse image search, Google dorking, …
---
name: ctf-osint
description: Provides open source intelligence techniques for CTF challenges. Use when gathering information from public sources, social media, geolocation, DNS records, username enumeration, reverse image search, Google dorking, Wayback Machine, Tor relays, FEC filings, or identifying unknown data like hashes and coordinates.
license: MIT
compatibility: Requires filesystem-based agent (Claude Code or similar) with bash, Python 3, and internet access for OSINT lookups.
allowed-tools: Bash Read Write Edit Glob Grep Task WebFetch WebSearch
metadata:
user-invocable: "false"
---
# CTF OSINT
Quick reference for OSINT CTF challenges. Each technique has a one-liner here; see supporting files for full details.
## Prerequisites
**Python packages (all platforms):**
```bash
pip install shodan Pillow
```
**Linux (apt):**
```bash
apt install whois dnsutils nmap libimage-exiftool-perl imagemagick curl
```… install to load the full skill