Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security Snort-Signatures
[Top] [All Lists]

[Snort-sigs] rule content

Subject: [Snort-sigs] rule content
Date: Tue, 19 Jun 2007 01:47:57 +0100
 

 

Hi All,

 

I am trying to  understand how to write the rules. I have some problems:

 

1.       When to convert byte? Raw data? Or when to leave it as it is or
when to  have a mixed binary and text content ? 

For example I have the rules 

 

alert tcp any any -> any 80 (content: !"GET";)

 

alert tcp any any -> any 139 (content: "|5C 00|P|00|P|00|E|00 5cl`;)

 

 

 

2.       Is there any format that is best to work with? 

 

3.       Can someone help me to reconstitute the original content that was
converted in the second rule given here as an example ?

 

 

 

 

Regards,

Julio

 

-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
_______________________________________________
Snort-sigs mailing list
Snort-sigs@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/snort-sigs
<Prev in Thread] Current Thread [Next in Thread>