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pcap file containing cryptcat conversation

asked 2020-04-28 06:34:55 +0000

3RO gravatar image

I have a pcap file of a cryptcat conversation and also i have the key, but whatever i try i have no success decrypt the conversation. Can u help me?

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What have you tried so far?

Jaap gravatar imageJaap ( 2020-04-28 06:55:26 +0000 )edit

Taking the tcp stream (as hexdump) and trying to decrypt it, but it's really the twofish encryption of the msg, it seems like it has another layer of encryption.

Twofish encryption results in a nice string (similar to base 64..)

3RO gravatar image3RO ( 2020-04-28 07:48:09 +0000 )edit

Thank you very much, I think it'll do

3RO gravatar image3RO ( 2020-04-28 08:38:22 +0000 )edit

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answered 2020-04-28 08:30:02 +0000

Jaap gravatar image

You'll have to have a look at the cryptcat source code (to be found on SourceForge) to see how they bolted on encryption to the netcat stream. If you want to do it the hard way you're looking at cryptanalysis, which is somewhat out of scope for this Q&A site.

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Asked: 2020-04-28 06:34:55 +0000

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Last updated: Apr 28 '20