Re: Can't generate alerts on HTTP GET attacks

[Ryan <ryan () organizedvillainy com>]

You have a double slash (//) at the beginning of your content match
filter.  "//index.php?" vs "/index.php?"

Also, you could add:
content:"GET"; http_method;

-Ryan!

On 7/2/14 2:34 PM, Sabawoon Mageedzada wrote:
> Hi everyone, I would appreciate if someone can help me please. I am a
> new b.
>
> I have to generate alerts runing pcap files that contains HTTP GET
> attacks(Might be a different level of attak)
>
> Provded examples after my buddy's request. i have copied these from
> csv file. Sorry for the format. I have pcap files full of these
> attacks. But can't figure out a snort rule to generate alerts while
> running these packets.
>
> *This is my snort rule.*
>
> alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"some
> kind of get attack attempt"; flow:to_server,established;
> content:"//index.php?keywords=http%3A%2F%2Frevftdrcghjw.com%2F ";
> http_uri; content:"id="; meta; metadata:service http;
> reference:bugtraq,10129; classtype:web-application-activity;
> sid:2588001; rev:8;)
>
> *These are the attacks I got it from my csv file but they are also in
> pcap format. I have a lot of these kinds of attacks stored in pcap
> filesbut can't generate alerts when I run snort on pcap files. *
>
> *2010-Oct-07 03:19:14.760262     someip  53181   >       someip    80
>      websiteurl    
>  /webcomm/myvidoesVideos/index.php?vid=http://www.vimeo.com/moogaloop.swf?clip_id=1140523/
>  **vid=http://www.vimeo.com/moogaloop.swf?clip_id=/ *
>
> *
> *
>
> 2010-Oct-07 01:18:50.635566 some ip 57991 > some ip 80 urofwebsite
> /index.php?keywords=http%3A%2F%2Frevftdrcghjw.com%2F
> keywords=http://revftdrcghjw.com/ HTTP/1.1
>
> 2010-Oct-07 01:18:51.615340 some ip 50523 > some ip 80 ureofwebsite
> /index.php?keywords=http%3A%2F%2Frevftdrcghjw.com%2F
> keywords=http:revftdrcghjw.com/ <http://revftdrcghjw.com/>
>
> 2010-Oct-07 01:42:00.631679 someip 34237 > someip 80 urlofwebsite
> /webcomm/masonVideos/index.php?vid=http:/www.vimeo.com/moogaloop.swf?clip_id=1140523/
> <http://www.vimeo.com/moogaloop.swf?clip_id=1140523/>
> vid=http:/www.vimeo.com/moogaloop.swf?clip_id=/
> <http://www.vimeo.com/moogaloop.swf?clip_id=/> HTTP/1.1
>
>
>
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Open source business process management suite built on Java and Eclipse
Turn processes into business applications with Bonita BPM Community Edition
Quickly connect people, data, and systems into organized workflows
Winner of BOSSIE, CODIE, OW2 and Gartner awards
http://p.sf.net/sfu/Bonitasoft

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