소스를 보자
if(eregi("#|union|from|challenge|select|\(|\t|/|limit|=|0x",$_GET[no])) exit("no hack");
$q=@mysql_fetch_array(mysql_query("select id from challenge27_table where id='guest' and no=($_GET[no])")) or die("query error");
select id from challenge27_table where id='guest' and no=1||id=admin
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