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dailydave logo Dailydave mailing list archives

Re: Testing the quickness of signature writers
From: Brian Caswell <bmc () snort org>
Date: Tue, 2 May 2006 14:51:06 -0400

On May 2, 2006, at 2:20 PM, M. Shirk wrote:
>> pcre:"/[\? \x3b\x26]module=[a-zA-Z0-9]*[^\x3b\x26]/U";

A forward slash, followed by any one char from the set ('?', ';', '&') followed by the literal text "module=" followed by any number (zero or more) alphanumerics followed by any char that is neither ';' nor '&'. All matched
against the decoded URI buffer.

That space after the \? will be evaluated in the character set and the forward slash acts as the bracket for the pcre expression.

In the rule I originally sent, there was no space in the character set. Probably added accidentally when dave copied it in his response.

Brian


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