Think more!
'',
'& ' => '',
'&& ' => '',
';' => '',
'|' => '',
'-' => '',
'$' => '',
'(' => '',
')' => '',
'`' => '',
'||' => '',
'/' => '',
'\\' => '',
);
$target = str_replace(array_keys($substitutions),$substitutions,$target);
echo shell_exec($target);
if($_GET["typeBox"] == "flag")
echo "You did again! Impressive.";
}
?>