CG CTF 起名字真难

题目链接

function noother_says_correct($number)
{
     
       $one = ord('1');
       $nine = ord('9');
       for ($i = 0; $i < strlen($number); $i++)
       {
        
               $digit = ord($number{
     $i});
               if ( ($digit >= $one) && ($digit <= $nine) )
               {
     
                       return false;
               }
       }
          return $number == '54975581388';
}
$flag='*******';
if(noother_says_correct($_GET['key']))
   echo $flag;
else 
   echo 'access denied';
?>

要输出flag，就要noother_says_correct($_GET['key'])为真，即$number == '54975581388'

nooter_says_correct要求number的每一位的ASCII码值不能大于1小于9

PHP是弱类型，key=0xccccccccc（54975581388的十六进制）

构造请求http://chinalover.sinaapp.com/web12/index.php?key=0xccccccccc

nctf{follow_your_dream}