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decrypting tcp packets

 
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sutar
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Joined: 10 Aug 2013
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PostPosted: Fri Aug 30, 2013 8:37 am    Post subject: decrypting tcp packets Reply with quote

In a client- server communication the TCP packets are encrypted i think in any mmorpg.
When a client has to send a data to the server it would take the following steps(if i am right)
Arrow first collect data
Arrow encrypt it
Arrow and then send it to the game server

so can anybody explain me how this plain- data to to encrypted- data process take place?
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atom0s
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PostPosted: Fri Aug 30, 2013 2:17 pm    Post subject: Reply with quote

It is entirely dependent on the game and the encryption used for how things take place. There is no standard that works for all games.

In a lot of cases there will be a chain of events that takes place such as:

-> Read incoming packet.
-> Decrypt packet.
-> Parse packet data.
-> Build response packet.
-> Encrypt packet.
-> Send outgoing packet.

And so on. However the process in which these are called/handled will vary er-game, as well as per-encryption.

You will have to debug the game yourself to find the encryption/decryption routines as well as any other info that is needed to read the raw packets.

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