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subfalcon

subfalcon is a subdomain enumeration tool that allows you to discover and monitor subdomains for a given list of domains or a single domain. It fetches subdomains from various sources, saves them to a SQLite database, and can notify updates via Discord.

Table of Contents

Features

  • Subdomain enumeration from multiple sources.
    1. crt.sh
    2. hackertarget
    3. anubis
    4. Alienvault
    5. rapiddns
    6. urlscan.io
  • SQLite database to store discovered subdomains.
  • Discord integration for monitoring updates.
  • Easy-to-use command-line interface.
  • Option to process a single domain with the -d flag.

Installation

You can install subfalcon using the following command:

go install github.com/cyinnove/subfalcon/cmd/subfalcon@latest

Usage

subfalcon -l domains.txt -w "YOUR_DISCORD_WEBHOOK_URL" -m

or

subfalcon -d example.com -w "YOUR_DISCORD_WEBHOOK_URL"

Options

  • -l or --domain_list: Specify a file containing a list of domains.
  • -m or --monitor: Monitor subdomains and send updates to Discord.
  • -w or --webhook: Specify the Discord webhook URL.
  • -d or --domain: Specify a single domain for processing.

Examples

  • Basic usage with a list of domains:

    subfalcon -l domains.txt

  • Process a single domain:

    subfalcon -d example.com

  • Monitor a single domain and send updates to Discord:

    subfalcon -d example.com -m -w "YOUR_DISCORD_WEBHOOK_URL"

  • Monitor and send updates to Discord with a list of domains:

    subfalcon -l domains.txt -m -w "YOUR_DISCORD_WEBHOOK_URL"

  • Monitor new subdomains with a list of domains:

    subfalcon -l domains.txt -m

Contributing

Feel free to contribute by opening issues or submitting pull requests.

License

This project is licensed under the MIT License.

Disclaimer

Use this tool responsibly and only on systems you have permission to scan. The authors are not responsible for any misuse or damage caused by this tool.

ToDo

  • Add monitoring using Telegram.
  • Add more resources to monitor subdomains.
  • Add flags to customize monitoring time intervals.
  • Add concurrency for domain processing.
  • Improve the logging system.

If you enjoy what we do, please support us: Buy Me Ko-fi! https://ko-fi.com/h0tak88r