真tmd不容易
<?php
error_reporting(0); if (!isset($_POST['uname']) || !isset($_POST['pwd'])) {
echo '<form action="" method="post">'."<br/>";
echo '<input name="uname" type="text"/>'."<br/>";
echo '<input name="pwd" type="text"/>'."<br/>";
echo '<input type="submit" />'."<br/>";
echo '</form>'."<br/>";
echo '<!--source: source.txt-->'."<br/>";
die;
} function AttackFilter($StrKey,$StrValue,$ArrReq){
if (is_array($StrValue)){
$StrValue=implode($StrValue);
}
if (preg_match("/".$ArrReq."/is",$StrValue)==1){
print "水可载舟，亦可赛艇！";
exit();
}
} $filter = "and|select|from|where|union|join|sleep|benchmark|,|\(|\)";
foreach($_POST as $key=>$value){
AttackFilter($key,$value,$filter);
} $con = mysql_connect("XXXXXX","XXXXXX","XXXXXX");
if (!$con){
die('Could not connect: ' . mysql_error());
}
$db="XXXXXX";
mysql_select_db($db, $con);
$sql="SELECT * FROM interest WHERE uname = '{$_POST['uname']}'";
$query = mysql_query($sql);
if (mysql_num_rows($query) == 1) {
$key = mysql_fetch_array($query);
if($key['pwd'] == $_POST['pwd']) {
print "CTF{XXXXXX}";
}else{
print "亦可赛艇！";
}
}else{
print "一颗赛艇！";
}
mysql_close($con);
?>
本来直接跳到最后看print "CTF{xxxx}";哪一行了，看到上面一位是弱类型。结果tmd才发现在16行就已经把数组给处理了，也就是很明白的说这不是弱类型。
后来想了想也只有注入了。可AttackFilter这个函数把该过滤的都过滤了。后来记得有个order by注入：http://www.cnblogs.com/xishaonian/p/7703486.html
等会儿再写 快下班了