Snort mailing list archives

Re: Issue while detecting patterns in a simple HTTP Page [Web client based]

From: Sujit Ghosal <thesujit () gmail com>
Date: Mon, 22 Nov 2010 10:27:19 +0530

Below is my snort rule:
alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"HTTP Test Rule";
flow:established,to_client; content:"html"; nocase;
classtype:web-application-attack; reference:url,
www.exploit-db.com/exploits/999999; sid:9000; rev:1;)

And this is my snort.conf file entries: http://vim.pastey.net/143149

- Sujit

On Mon, Nov 22, 2010 at 6:43 AM, waldo kitty <wkitty42 () windstream net>wrote:

On 11/21/2010 13:59, Sujit Ghosal wrote:

Hey Guys,
     I have installed Snort v2.8.x in FC-13//Ubuntu v10.10 and everything

got

installed/configured (installed through Redhat Package Manager//Synaptic

Package

Manager) successfully. But while writing a rule to detect a simple

pattern

inside HTML body, snort is failing to do so! If I check for the HTTP MIME
headers only i.e. "Content-Type:", "Via:" etc. then snort detects those

patterns

flawlessly. Even I wrote a simple rule to detect GET requests over

$HTTP_PORTS

and its working fine.


can you post the rule that you have that is not working??

But while it comes to check for the contents inside the HTML body (client

side

web pages) entity then snort is not even detecting a single <html> tag. I

guess,

its an issue with any preprocessors, but I have no idea that which

preprocessor

could be creating such issues.


we might need to see your snort.conf file, too... but let's look at your
rule
first ;)

I am fully stuck in that place and not able to figure out that how I

should fix

this silly problem.

Please help. Any help would be more appreciated.


we will do what we can :)


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Beautiful is writing same markup. Internet Explorer 9 supports
standards for HTML5, CSS3, SVG 1.1,  ECMAScript5, and DOM L2 & L3.
Spend less time writing and  rewriting code and more time creating great
experiences on the web. Be a part of the beta today
http://p.sf.net/sfu/msIE9-sfdev2dev

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Current thread:

Issue while detecting patterns in a simple HTTP Page [Web client based] Sujit Ghosal (Nov 22)
- Re: Issue while detecting patterns in a simple HTTP Page [Web client based] waldo kitty (Nov 22)
  - Re: Issue while detecting patterns in a simple HTTP Page [Web client based] Sujit Ghosal (Nov 22)
    - Re: Issue while detecting patterns in a simple HTTP Page [Web client based] Alex Kirk (Nov 22)