Snort mailing list archives
[help,urgent] Using PCRE to match packets in hex
From: Yoyo Lam <mtcyoyo () gmail com>
Date: Sun, 27 Oct 2013 19:39:59 +0100
Hello experts, I have a problem about PCRE. I wrote a PCRE pattern that perfectly matches a certain message, and I checked in some regex checker and there is no problem. But when I put it in a Snort rule with the B modifier, it doesn't work. Please help me to figure what happened. The PCRE Check page: http://www.phpliveregex.com/p/1In My Snort rule: alert tcp any any -> any any (pcre:"/([0-9a-fA-F]{2})13([0-9a-fA-F]{2}){8}(77696e646f7773|6c696e7578)/B"; msg:"Some message"; sid:1234567; rev:1;) Please help me by either 1) Telling me what I have forgotten to add/change/remove; 2) Give me the working rule :D 3) Any way that can solve this fast This is quite urgent, so please help me asap. Best regards, Yoyo
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Current thread:
- [help,urgent] Using PCRE to match packets in hex Yoyo Lam (Oct 27)
- Re: [help,urgent] Using PCRE to match packets in hex Jeremy Hoel (Oct 27)
- Re: [help,urgent] Using PCRE to match packets in hex Yoyo Lam (Oct 27)
- Re: [help,urgent] Using PCRE to match packets in hex waldo kitty (Oct 27)
- Re: [help,urgent] Using PCRE to match packets in hex Yoyo Lam (Oct 27)
- Re: [help,urgent] Using PCRE to match packets in hex Yoyo Lam (Oct 27)
- Re: [help,urgent] Using PCRE to match packets in hex rmkml (Oct 27)
- Re: [help,urgent] Using PCRE to match packets in hex rmkml (Oct 27)
- Re: [help,urgent] Using PCRE to match packets in hex Yoyo Lam (Oct 27)
- Message not available
- Re: [help,urgent] Using PCRE to match packets in hex Yoyo Lam (Oct 28)
- Re: [help,urgent] Using PCRE to match packets in hex Yoyo Lam (Oct 28)
- Re: [help,urgent] Using PCRE to match packets in hex Yoyo Lam (Oct 27)
- Re: [help,urgent] Using PCRE to match packets in hex Jeremy Hoel (Oct 27)