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Wireshark-users: [Wireshark-users] Reconstruct received MMS from pcap

From: Per Steffensen <steff@xxxxxxxxxxxxx>
Date: Tue, 22 Mar 2011 11:57:52 +0100
Hi

I have a set of pcap-files containing the traffic generated when sending a MMS. If I use mergecap to combine those pcaps into one pcap and open this in WireShark I am able to see a nice "line" in the GUI containing all info about the MMS - it has protocol "MMSE/SMIL" and contains "MMS Message Encapsulation, Type: m-send-req" and "Content-type: application/vnd.wap.multipart.related; type=application/smil; start=0.smil". Using the treeview in the bottom of the GUI I can see all parts (smil, images etc.). Very nice.

I also have a set of pcap-files containing the traffic generated when receiving a MMS. I would like this to be nicely assembled for me just like the MMS send. But it is not. I see a "line" in the GUI with protocol "MMSE" and it contains "MMS Message Encapsulation, Type: m-notifyresp-ind" and "Status: Delivered", but there is no actual content of the MMS to be found. Guess it is just a confirmation message that the message has been delivered to the phone. Besides that I see a "HTTP GET" and a "HTTP/1.0 200 OK" (Using http://wiki.wireshark.org/Mate/Examples/MMS?highlight=(MMS) it is marked a MMS related, but not assembled MMS content to be found). In between all this there are a lot of TCP "lines" to be found in WireShark, and I guess the actual MMS content is in there somewhere. But no single "line" in WireShark seems to assemble it for me, as it does for a sent MMS.

Questions:
- Is WireShark supposed to assemble a received MMS for me out-of-the-box, just as it is able to do for a sent MMS? - If yes, any suggestions on why it doenst happen i my case? Missing packages? Dissector not applied? - If no, anyone has an idea how I get WireShark to assemble my MMS receive traffic into a nice "line" i WireShark allowing me to extract the content of the MMS?

I am pretty new to WireShark so please thorough explaining for dummies :-)
Thanks alot!

Regards, Per Steffensen