metasploit-framework/modules/post/multi/gather/dns_bruteforce.rb

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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
require 'rex'
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class MetasploitModule < Msf::Post
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def initialize(info={})
super( update_info( info,
'Name' => 'Multi Gather DNS Forward Lookup Bruteforce',
'Description' => %q{
Brute force subdomains and hostnames via wordlist.
},
'License' => MSF_LICENSE,
'Author' => [ 'Carlos Perez <carlos_perez[at]darkoperator.com>'],
'Platform' => %w{ bsd linux osx solaris win },
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'SessionTypes' => [ 'meterpreter', 'shell' ]
))
register_options(
[
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OptString.new('DOMAIN', [true, 'Domain to do a forward lookup bruteforce against.']),
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OptPath.new('NAMELIST',[true, "List of hostnames or subdomains to use.",
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::File.join(Msf::Config.data_directory, "wordlists", "namelist.txt")])
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], self.class)
end
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# Run Method for when run command is issued
def run
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domain = datastore['DOMAIN']
hostlst = datastore['NAMELIST']
a = []
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print_status("Performing DNS Forward Lookup Bruteforce for Domain #{domain}")
if session.type =~ /shell/
# Only one thread possible when shell
thread_num = 1
# Use the shell platform for selecting the command
platform = session.platform
else
# When in Meterpreter the safest thread number is 10
thread_num = 10
# For Meterpreter use the sysinfo OS since java Meterpreter returns java as platform
platform = session.sys.config.sysinfo['OS']
end
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name_list = []
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if ::File.exist?(hostlst)
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::File.open(hostlst).each do |n|
name_list << n
end
end
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platform = session.platform
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case platform
when /win/i
cmd = "nslookup"
when /solaris/i
cmd = "/usr/sbin/host "
else
cmd = "/usr/bin/host "
end
while(not name_list.nil? and not name_list.empty?)
1.upto(thread_num) do
a << framework.threads.spawn("Module(#{self.refname})", false, name_list.shift) do |n|
next if n.nil?
vprint_status("Trying #{n.strip}.#{domain}")
r = cmd_exec(cmd, "#{n.strip}.#{domain}")
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case session.platform
when /win/
proccess_win(r, "#{n.strip}.#{domain}")
else
process_nix(r, "#{n.strip}.#{domain}")
end
end
a.map {|x| x.join }
end
end
end
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# Process the data returned by nslookup
def proccess_win(data,ns_opt)
if data =~ /Name/
# Remove unnecessary data and get the section with the addresses
returned_data = data.split(/Name:/)[1]
# check each element of the array to see if they are IP
returned_data.gsub(/\r\n\t |\r\n|Aliases:|Addresses:/," ").split(" ").each do |e|
if Rex::Socket.dotted_ip?(e)
print_good("#{ns_opt} #{e}")
report_host(:host=>e, :name=>ns_opt.strip)
end
end
end
end
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# Process the data returned by the host command
def process_nix(r,ns_opt)
r.each_line do |l|
data = l.scan(/(\S*) has address (\S*)$/)
if not data.empty?
data.each do |e|
print_good("#{ns_opt} #{e[1]}")
report_host(:host=>e[1], :name=>ns_opt.strip)
end
end
end
end
end