Snort mailing list archives
Re: scanning for emoticons in MSN messenger?
From: Joel Esler <jesler () sourcefire com>
Date: Mon, 3 May 2010 08:38:48 -0400
Eric, You'd have to grab a pcap of traffic to see what format the emoticon is in. Then you could write a simple content signature. Joel On Mon, May 3, 2010 at 3:07 AM, Eric Zheng <zhengeric () hotmail com> wrote:
I want to see if it's possible to make a rule to look for any custom emoticon being sent over MSN messenger. I believe this is possible since a custom emoticon image has to be sent over the network, but I'm not sure how to look for it (file type matching? but I don't know what format custom emoticons are in). I'm new to snort rules but I have been familiarizing myself with their syntax and usage. I believe it would be along the lines of: alert tcp $EXTERNAL_NET 1863 -> $HOME_NET any (msg:"Emoticon detected"; <emoticon signature>;) Where <emoticon signature> are the requisites to trigger the alert. Port 1863 is used for MSN messenger. Any help would be appreciated, thanks! ------------------------------ The New Busy is not the too busy. Combine all your e-mail accounts with Hotmail. Get busy.<http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4> ------------------------------------------------------------------------------ _______________________________________________ Snort-sigs mailing list Snort-sigs () lists sourceforge net https://lists.sourceforge.net/lists/listinfo/snort-sigs
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Current thread:
- scanning for emoticons in MSN messenger? Eric Zheng (May 03)
- Re: scanning for emoticons in MSN messenger? Joel Esler (May 03)
- Re: scanning for emoticons in MSN messenger? Eric Zheng (May 03)
- Re: scanning for emoticons in MSN messenger? Joel Esler (May 04)
- Re: scanning for emoticons in MSN messenger? Eric Zheng (May 03)
- Re: scanning for emoticons in MSN messenger? Joel Esler (May 03)