This is a simple Python script for DNS subdomain discovery. It enumerates subdomains of a given domain using a wordlist file and DNS resolution.

• Multi-threaded DNS resolution for faster discovery.
• Customizable DNS resolver.
• Utilizes a wordlist file to discover subdomains.
• Timeout value for DNS resolution.

• Python 3.x
• argparse, argcomplete, tqdm, and colorama Python libraries. You can install them using pip:

pip install argparse argcomplete tqdm colorama

python dnsfuzzer.py -d <domain> -w <wordlist> [-r <resolver>] [-t <threads>] [-T <timeout>]

• -d, --domain: Domain to enumerate subdomains of (required).
• -w, --wordlist: Wordlist file to use for subdomain discovery (required).
• -r, --resolver: IP address of a DNS resolver to use (optional).
• -t, --threads: Number of threads for concurrent resolution (default=50).
• -T, --timeout: Timeout value for DNS resolution (default=5).

python dnsfuzzer.py -d example.com -w wordlist.txt -r 8.8.8.8 -t 20 -T 3

This will enumerate subdomains of example.com using the wordlist in wordlist.txt file, utilizing 8.8.8.8 as the DNS resolver with 20 threads for concurrent resolution and a timeout of 3 seconds.

This project is licensed under the MIT License - see the LICENSE file for details.