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Reversing Packet Encryption

 
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CRISISxCupid
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PostPosted: Fri May 23, 2008 10:55 am    Post subject: Reversing Packet Encryption Reply with quote

I don't want it for maple story so don't bitch.

How can I do this? Is there different kinds of encryption?
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majick
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PostPosted: Fri May 30, 2008 12:16 pm    Post subject: Re: Reversing Packet Encryption Reply with quote

lwasbannedb4oncef wrote:
I don't want it for maple story so don't bitch.

How can I do this? Is there different kinds of encryption?


LOL!!!!!
Dude if there was only one kind of encription than everything would be very easily hacked all to hell.
if you want to play with somthing really fun work with chinese [rpc] encrypted with unique headers (its way to much fun for me)

From what i have seen all games have there own encryption

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Labyrnth
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PostPosted: Fri May 30, 2008 12:42 pm    Post subject: Reply with quote

Well you would have to find the routine it uses for doing the encrypt.
Not an easy task.

It can be as simple as adding,multiplying or subtracting a hex value from the original hex of the letters in the packet.

You could try sending chat packets to test it out.
1. send "a" to chat while sniffing
2. Send "A" to chat again while sniffing
3. Look at the packets and see if they are exactly the same or have changed.
4. If they are the same, then send one for "A" and compare the 2 packets for a change.
5. If you see 1 change, it has to be the difference in "a" to "A"
a = 61
A = 41

If you see hex for "a" is 71 in the packet
And you see "A" is 51 in the packet
You know it is adding 10h to the hex value of the letter.
----------------------------------------------------------------
Close the game and run it again, then do all the same steps again to see if it has changed.
It could be adding 20h the next round. If it is still using 10h, then it s a real easy encryption and you have just cracked it. "You will not see this very often on retail software."
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STN
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PostPosted: Fri May 30, 2008 2:57 pm    Post subject: Reply with quote

you will NEVER see it like this in real software hehe Wink
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