cert-transparency
Installation
SKILL.md
What this skill does
Queries TLS/SSL certificates issued for a specific domain via the crt.sh Certificate Transparency (CT) log API. Extracts subdomains from the CN (Common Name) and SAN (Subject Alternative Name) fields of certificates, deduplicates them, and expands the attack surface.
When to use
- Enumerating subdomains passively (no DNS queries)
- Discovering subdomains covered by wildcard certificates
- Auditing the list of certificates issued by a specific organization
- Supplementing subfinder/amass results with an additional source