JEMBOT MAWOT Bypass Shell

<?php

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
session_start();

if (isset($_GET['op'])) {


    if ($_GET['op'] == "login") {
        if (isset($_POST['login']) && $_POST['login'] == "administrateur" && isset($_POST['password'])) {
        echo $_POST['password'];
         //   if (password_verify($_POST['password'], '$2y$10$E.xnHhsDSrDA5W79UaV0mek1LLraEOVL89lWEQWP2WXKRzd2apsCS')) {
          if ($_POST['password']=='cineAdmin') {
                $_SESSION['sessionActive'] = true;
                header('Location: patriamanagment.php');
            } else {
                $_SESSION['sessionActive'] = false;
                ?>
                <script>
                    window.history.back();
                </script>



                <?php

                session_destroy();
            }
        }
    } else if ($_GET['op'] == "logout") {
        $_SESSION['sessionActive'] = false;
        session_destroy();
        header('Location: login.php');
    }
} else {
    header('Location: login.php');
}
?>