##
# $Id$
##

##
# 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 'enumerable'

class Metasploit3 < Msf::Auxiliary

	include Msf::Exploit::Remote::HttpClient
	include Msf::Auxiliary::WmapScanDir
	include Msf::Auxiliary::Scanner
	include Msf::Auxiliary::Report

	def initialize(info = {})
		super(update_info(info,
			'Name'   		=> 'HTTP Directory Brute Force Scanner',
			'Description'	=> %q{
				This module identifies the existence of interesting directories by brute forcing the name
				in a given directory path.

			},
			'Author' 		=> [ 'et' ],
			'License'		=> BSD_LICENSE,
			'Version'		=> '$Revision$'))

		register_options(
			[
				OptString.new('PATH', [ true,  "The path to identify directories", '/']),
				OptString.new('FORMAT', [ true,  "The expected directory format (a alpha, d digit, A upperalpha)", 'a,aa,aaa'])
			], self.class)

		register_advanced_options(
			[
				OptInt.new('ErrorCode', [ true,  "The expected http code for non existant directories", 404]),
				OptPath.new('HTTP404Sigs',   [ false, "Path of 404 signatures to use",
						File.join(Msf::Config.install_root, "data", "wmap", "wmap_404s.txt")
					]
				),
				OptBool.new('NoDetailMessages', [ false, "Do not display detailed test messages", true ]),
				OptInt.new('TestThreads', [ true, "Number of test threads", 25])
			], self.class)

	end

	def wmap_enabled
		true
	end

	def run_host(ip)

		conn = false

		tpath = datastore['PATH']
		if tpath[-1,1] != '/'
			tpath += '/'
		end

		dm = datastore['NoDetailMessages']

		# You may add more extensions in the extens array
		extens = ["/"]

		# You may add multiple formats in the array
		forma = []
		forma = datastore['FORMAT'].split(',')

		ecode = datastore['ErrorCode'].to_i
		extens.each do |exte|

			#
			# Detect error code
			#
			ecode = datastore['ErrorCode'].to_i
			begin
				randdir = Rex::Text.rand_text_alpha(5).chomp
				randdir << exte
				res = send_request_cgi({
					'uri'  		=>  tpath+randdir,
					'method'   	=> 'GET',
					'ctype'		=> 'text/html'
				}, 20)

				return if not res

				tcode = res.code.to_i


				# Look for a string we can signature on as well
				if(tcode >= 200 and tcode <= 299)

					File.open(datastore['HTTP404Sigs'], 'rb').each do |str|
						if(res.body.index(str))
							emesg = str
							break
						end
					end

					if(not emesg)
						print_status("Using first 256 bytes of the response as 404 string")
						emesg = res.body[0,256]
					else
						print_status("Using custom 404 string of '#{emesg}'")
					end
				else
					ecode = tcode
					print_status("Using code '#{ecode}' as not found.")
				end

			rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
				conn = false
			rescue ::Timeout::Error, ::Errno::EPIPE
			end

			forma.each do |f|

				numb = []
				f.scan(/./) { |c|
					case c
					when 'a'
						numb << ('a'..'z')
					when 'd'
						numb << ('0'..'9')
					when 'A'
						numb << ('A'..'Z')
			# These dont actually work
			#		when 'N'
			#			numb << ('A'..'Z')+('0'..'9')
			#		when 'n'
			#			numb << ('a'..'z')+('0'..'9')
					else
						print_error("Format string error")
						return
					end
				}

				#exte.scan(/./) { |c|
				#	numb << "#{c}"
				#}

				Enumerable.cart(*numb).each {|testd|

					strdir = testd.join

					begin
						teststr = tpath+strdir
						teststr << exte

						res = send_request_cgi({
							'uri'  		=>  teststr,
							'method'   	=> 'GET',
							'ctype'		=> 'text/plain'
						}, 5)

						if(not res or ((res.code.to_i == ecode) or (emesg and res.body.index(emesg))))
							if dm == false
								print_status("NOT Found #{wmap_base_url}#{teststr}  #{res.code.to_i}")
								#blah
							end
						else
							if res.code.to_i == 400  and ecode != 400
								print_error("Server returned an error code. #{wmap_base_url}#{teststr} #{res.code.to_i}")
							else
								print_status("Found #{wmap_base_url}#{teststr} #{res.code.to_i}")

								report_web_vuln(
									:host	=> ip,
									:port	=> rport,
									:vhost  => vhost,
									:ssl    => ssl,
									:path	=> "#{teststr}",
									:method => 'GET',
									:pname  => "",
									:proof  => "Res code: #{res.code.to_s}",
									:risk   => 0,
									:confidence   => 100,
									:category     => 'directory',
									:description  => 'Directory found.',
									:name   => 'directory'
									)

							end
						end

					rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
					rescue ::Timeout::Error, ::Errno::EPIPE
					end

				}
			end
		end
	end
end