UnaPibaGeek/ctfr

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

2117 stars · 294 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

CTFR is a Python command-line tool that enumerates HTTPS website subdomains by querying Certificate Transparency logs (via crt.sh) instead of brute-forcing or dictionary attacks. It takes a target domain and optionally writes discovered subdomains to an output file.

Use cases

• enumerate subdomains of a target domain for a pentest
• discover HTTPS subdomains from certificate transparency logs
• gather attack surface information without brute-forcing DNS
• find subdomains for bug bounty reconnaissance
• save a list of subdomains to a text file
• replace legacy AXFR zone transfer techniques

When to choose

• you need fast, passive subdomain discovery for HTTPS sites
• you want results without dictionary or brute-force DNS queries
• you need a lightweight Python script or Docker image for recon

When to avoid

• you need active DNS resolution or validation of discovered hosts
• you need broad OSINT beyond subdomain enumeration
• you require frequent updates or active maintenance

Facets

cli-tool · maturity maintenance

security osint web-scraping cli security penetration-testing osint networking python cli cross-platform subdomain-enumeration certificate-transparency reconnaissance pentesting crtsh

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