CoCalc provides the best real-time collaborative environment for Jupyter Notebooks, LaTeX documents, and SageMath, scalable from individual users to large groups and classes!

1
##
2
# This module requires Metasploit: https://metasploit.com/download
3
# Current source: https://github.com/rapid7/metasploit-framework
4
##
5

6
class MetasploitModule < Msf::Post
7

8
  def initialize(info = {})
9
    super(
10
      update_info(
11
        info,
12
        'Name' => 'Multi Gather DNS Forward Lookup Bruteforce',
13
        'Description' => %q{
14
          Brute force subdomains and hostnames via wordlist.
15
        },
16
        'License' => MSF_LICENSE,
17
        'Author' => [ 'Carlos Perez <carlos_perez[at]darkoperator.com>'],
18
        'Platform' => %w[bsd linux osx solaris win],
19
        'SessionTypes' => [ 'meterpreter', 'shell' ]
20
      )
21
    )
22
    register_options(
23
      [
24

25
        OptString.new('DOMAIN', [true, 'Domain to do a forward lookup bruteforce against.']),
26
        OptPath.new('NAMELIST', [
27
          true, 'List of hostnames or subdomains to use.',
28
          ::File.join(Msf::Config.data_directory, 'wordlists', 'namelist.txt')
29
        ])
30

31
      ]
32
    )
33
  end
34

35
  # Run Method for when run command is issued
36
  def run
37
    domain = datastore['DOMAIN']
38
    hostlst = datastore['NAMELIST']
39
    a = []
40

41
    print_status("Performing DNS Forward Lookup Bruteforce for Domain #{domain}")
42

43
    name_list = []
44
    if ::File.exist?(hostlst)
45
      ::File.open(hostlst).each do |n|
46
        name_list << n
47
      end
48
    end
49

50
    case session.platform
51
    when 'windows'
52
      cmd = 'nslookup'
53
    when 'solaris'
54
      cmd = '/usr/sbin/host '
55
    else
56
      cmd = '/usr/bin/host '
57
    end
58

59
    while !name_list.nil? && !name_list.empty?
60
      1.upto session.max_threads do
61
        a << framework.threads.spawn("Module(#{refname})", false, name_list.shift) do |n|
62
          next if n.nil?
63

64
          vprint_status("Trying #{n.strip}.#{domain}")
65
          r = cmd_exec(cmd, "#{n.strip}.#{domain}")
66

67
          case session.platform
68
          when 'windows'
69
            proccess_win(r, "#{n.strip}.#{domain}")
70
          else
71
            process_nix(r, "#{n.strip}.#{domain}")
72
          end
73
        end
74
        a.map(&:join)
75
      end
76
    end
77
  end
78

79
  # Process the data returned by nslookup
80
  def proccess_win(data, ns_opt)
81
    if data =~ /Name/
82
      # Remove unnecessary data and get the section with the addresses
83
      returned_data = data.split(/Name:/)[1]
84
      # check each element of the array to see if they are IP
85
      returned_data.gsub(/\r\n\t |\r\n|Aliases:|Addresses:/, ' ').split(' ').each do |e|
86
        if Rex::Socket.dotted_ip?(e)
87
          print_good("#{ns_opt} #{e}")
88
          report_host(host: e, name: ns_opt.strip)
89
        end
90
      end
91
    end
92
  end
93

94
  # Process the data returned by the host command
95
  def process_nix(r, ns_opt)
96
    r.each_line do |l|
97
      data = l.scan(/(\S*) has address (\S*)$/)
98
      next if data.empty?
99

100
      data.each do |e|
101
        print_good("#{ns_opt} #{e[1]}")
102
        report_host(host: e[1], name: ns_opt.strip)
103
      end
104
    end
105
  end
106
end
107

108