(Python) Fast Flux by Thomas Roccia
Created the Tuesday 13 December 2022. Updated 12 months ago.
This code uses the dnslib and socket modules to create and send a DNS query for the specified domain name to a DNS server. It then receives a DNS response from the server, modifies the response to include the IP addresses of the compromised hosts that will act as proxies, and sends the modified response back to the client.
This code simulates the operation of a DNS server that is being used for fast flux. In a real-world scenario, the DNS server would be under the control of the botnet, and the domain name and proxy addresses would be generated dynamically.
import dnslib import socket # Replace with the IP address of the DNS server dns_server = "220.127.116.11" # Replace with the domain name that you control domain_name = "example.com" # Replace with the IP addresses of the compromised hosts that will act as proxies proxy_addresses = ["10.0.0.1", "10.0.0.2", "10.0.0.3"] # Create a DNS query for the domain name query = dnslib.DNSRecord.question(domain_name) # Send the DNS query to the DNS server dns_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) dns_socket.sendto(query.pack(), (dns_server, 53)) # Receive the DNS response from the DNS server response = dnslib.DNSRecord.parse(dns_socket.recv(4096)) # Modify the DNS response to include the IP addresses of the compromised hosts response.add_answer(*dnslib.RR.fromZone("example.com A " + " ".join(proxy_addresses))) # Send the modified DNS response to the client dns_socket.sendto(response.pack(), (client_address, client_port))