Merge branch 'darkoperator-dnsenum2dnsreverselookup' of https://github.com/darkoperator/metasploit-framework into darkoperator-darkoperator-dnsenum2dnsreverselookup

modules/auxiliary/gather/dns_reverse_lookup.rb

@@ -0,0 +1,101 @@
+##
+# ## This file is part of the Metasploit Framework and may be subject to
+# redistribution and commercial restrictions. Please see the Metasploit
+# web site for more information on licensing and terms of use.
+#   http://metasploit.com/
+##
+
+require 'msf/core'
+require "net/dns/resolver"
+require 'rex'
+
+class Metasploit3 < Msf::Auxiliary
+	include Msf::Auxiliary::Report
+
+	def initialize(info = {})
+		super(update_info(info,
+			'Name'		   => 'DNS Reverse Lookup Enumeration',
+			'Description'	=> %q{
+					This module performs a reverse rookup against a given IP range.
+			},
+			'Author'		=> [ 'Carlos Perez <carlos_perez[at]darkoperator.com>' ],
+			'License'		=> BSD_LICENSE
+			))
+
+		register_options(
+			[
+				OptAddressRange.new('RANGE', [true, 'IP range to perform reverse lookup against.', nil]),
+				OptAddress.new('NS', [ false, "Specify the nameserver to use for queries, otherwise use the system DNS." ]),
+
+			], self.class)
+
+		register_advanced_options(
+			[
+				OptInt.new('RETRY', [ false, "Number of tries to resolve a record if no response is received.", 2]),
+				OptInt.new('RETRY_INTERVAL', [ false, "Number of seconds to wait before doing a retry.", 2]),
+				OptInt.new('THREADS', [ true, "Number of seconds to wait before doing a retry.", 2]),
+			], self.class)
+	end
+
+	def run
+		@res = Net::DNS::Resolver.new()
+
+		if datastore['RETRY']
+			@res.retry = datastore['RETRY'].to_i
+		end
+
+		if datastore['RETRY_INTERVAL']
+			@res.retry_interval = datastore['RETRY_INTERVAL'].to_i
+		end
+
+		@threadnum = datastore['THREADS'].to_i
+		switchdns() if not datastore['NS'].nil?
+		reverselkp(datastore['RANGE'])
+	end
+
+	#-------------------------------------------------------------------------------
+	def reverselkp(iprange)
+		print_status("Running reverse lookup against IP range #{iprange}")
+		ar = Rex::Socket::RangeWalker.new(iprange)
+		tl = []
+		while (true)
+			# Spawn threads for each host
+			while (tl.length <= @threadnum)
+				ip = ar.next_ip
+				break if not ip
+				tl << framework.threads.spawn("Module(#{self.refname})-#{ip}", false, ip.dup) do |tip|
+					begin
+						query = @res.query(tip)
+						query.each_ptr do |addresstp|
+							print_status("Host Name: #{addresstp} IP Address: #{tip.to_s}")
+
+							report_host(
+							:host => tip.to_s,
+							:name => addresstp
+							)
+						end
+					rescue ::Interrupt
+						raise $!
+					rescue ::Rex::ConnectionError
+					rescue ::Exception => e
+						print_error("Error: #{tip}: #{e.message}")
+					end
+				end
+			end
+			# Exit once we run out of hosts
+			if(tl.length == 0)
+				break
+			end
+			tl.first.join
+			tl.delete_if { |t| not t.alive? }
+		end
+	end
+
+	#---------------------------------------------------------------------------------
+	def switchdns()
+		print_status("Using DNS server: #{datastore['NS']}")
+		@res.nameserver=(datastore['NS'])
+		@nsinuse = datastore['NS']
+	end
+end
+