Findomain – Cross-platform Subdomain Enumerator

Findomain is a cross-platform subdomain enumerator, the tool is considered to be the fastest among other similar programs as it uses the common methods for sub(domains) discovery with the Certificate Transparency logs and specific well tested APIs to find subdomains.

Findomain – Cross-platform Subdomain Enumerator

The tool make use of multiple public available APIs to perform the search. including Certspotter ,Crt.sh Database (favorite) or Crt.sh HTTP API, Virustotal ,Sublist3r ,Facebook , Spyse (CertDB), Bufferover ,Threatcrowd ,AnubisDB , Urlscan.io ,SecurityTrails ,Threatminer.

Current supported features with this tool are:

  • Subdomains monitoring: put data to Discord, Slack or Telegram webhooks. See Subdomains Monitoring for more information.
  • Multi-thread support for API querying, it makes that the maximun time that Findomain will take to search subdomains for any target is 15 seconds (in case of API’s timeout).
  • Parallel support for subdomains resolution, in good network conditions can resolv about 3.5k of subdomains per minute.
  • DNS over TLS support.
  • Specific IPv4 or IPv6 query support.
  • Discover subdomains without brute-force, it tool uses Certificate Transparency Logs and APIs.
  • Discover only resolved subdomains.
  • Discover subdomains IP for data analysis.
  • Read target from user argument (-t) or file (-f).
  • Write to one unique output file specified by the user all or only resolved subdomains.
  • Write results to automatically named TXT output file(s).
  • Ability to query directly the Findomain database created with Subdomains Monitoring for previous discovered subdomains.
  • Ability to import and work data discovered by other tools.
  • Quiet mode to run it silently.
  • Cross platform support: Any platform, it’s written in Rust and Rust is multiplatform.
  • Multiple API support.
  • Possibility to use as subdomain resolver.
  • Update checker. Use the --check-updates flag.

You can read more and download this tool over here: https://github.com/Edu4rdSHL/findomain

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