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Packet encryption
Discussion on Packet encryption within the DarkOrbit forum part of the Browsergames category.
02/17/2013, 23:25
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#1
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Packet encryption
Hi guys, i know that some of you know the packet encryption mechanism used by DarkOrbit, so I was wondering if you might share it.
I am trying to figure it out but with no luck whatsoever :/ ...
I know that they use RC4 to encrypt their data, but i can't find the key. I have an idea, that they are sending the key over the connection, where the unique ID = 9098 , but i am not sure. the code decrypted by SWF Decompiler is so hard to understand ...
Any ideas here?
Thanks.
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02/18/2013, 00:56
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#2
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how did you know that they use RC4 to encrypt their data? moreover there are variants in this kind of encryption (RC4A, VMPC, and RC4+)...
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02/18/2013, 01:12
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#3
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I found it in the source code, but, man, it's hard to understand. There are so many functions connected to it, just omg. I just can't figure it out...
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02/18/2013, 01:15
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#4
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sounds like a DO employee trying to find out what we know O.o
(this is mostly a joke because of join date and post count)
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02/18/2013, 01:21
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#5
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Hahaha, no m8, not at all.
I have only been reading the stuff here without an account, only joined today to ask the question. 
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02/18/2013, 04:23
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#6
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funny how he starts of with complete sentences and in his other post it goes down hill slowly.....
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02/18/2013, 05:06
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#7
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triple encryption
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02/18/2013, 06:07
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#8
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Quote:
Originally Posted by V.I.R.U.S.
triple encryption
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triple encryption ? anything more precise? I can see that they add something to the ByteArray before ARC4'ing it, but couldn't figure out - what.
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02/18/2013, 06:53
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#9
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Do a google search, its called a salt, or more commonly in crypto terms, an IV (In RC4's case its a nonce, as its used once as a seed to a counter that is used on both sides, so RC4 is one of the weaker encryptions out there.)
-jD
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02/18/2013, 07:33
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#10
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Quote:
Originally Posted by »jD«
Do a google search, its called a salt, or more commonly in crypto terms, an IV (In RC4's case its a nonce, as its used once as a seed to a counter that is used on both sides, so RC4 is one of the weaker encryptions out there.)
-jD
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The problem in the DO encryption is how to get the Key and IV, Thats the real probem, maybe you could give us a clue with that about where did you get the IV? 
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02/18/2013, 07:36
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#11
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The RC4 implementation they use has no IV, its based on a count.
-jD
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02/18/2013, 09:35
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#12
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Thanks, jD!
So basicly - the only encryption they use is the RC4 with an IV - bytearray count?
How did u find the passkey ?
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02/18/2013, 09:49
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#13
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Keep looking, its in the first 3 packets 
-jD
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02/18/2013, 09:50
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#14
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It isnt encoded, right?
Thanks a lot!
Once im home, will try to look in them.
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02/18/2013, 10:07
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#15
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Quote:
Originally Posted by »jD«
Keep looking, its in the first 3 packets
-jD |
Thanks for the help, but in the first 3 packets to the port 8080 i can just find this packets, did you say that the key is there?
00 0E 02 9A 00 00 00 00 00 00 00 1D 00 00 00 08 = ................
00 0F 02 9B 01 00 00 00 00 00 00 00 1D 00 00 00 08 = .................
00 02 7A 3E = ..z>
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