> For the complete documentation index, see [llms.txt](https://donghyunlee.gitbook.io/write-up/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://donghyunlee.gitbook.io/write-up/wargame/webhacking.kr/old-61-200.md).
# old-61 (200)
첫 화면이다.
view-source를 클릭해 본 소스는 아래와 같다.
```php
Challenge 61";
echo "view-source
";
$_GET['id'] = addslashes($_GET['id']);
if(preg_match("/\(|\)|select|from|,|by|\./i",$_GET['id'])) exit("Access Denied");
if(strlen($_GET['id'])>15) exit("Access Denied");
$result = mysqli_fetch_array(mysqli_query($db,"select {$_GET['id']} from chall61 order by id desc limit 1"));
echo "{$result['id']}
";
if($result['id'] == "admin") solve(61);
echo "