Lemonlime
Expert Cheater
![]() Reputation: 0
Joined: 15 Sep 2007
Posts: 139
|
 Posted: Wed Feb 17, 2010 6:12 pm Post subject: Need some help with Encrypted Packets. |
 |
|
Hey guys.
I'm trying to do some packet editing on this server sided game.
Now, packets are encrypted, and I don't think you can just like that decrypt.
But there is this guy, he's known for bypassing this, I sent him and PM asking him how.
He answered me with" Trace backwards from WSASend() or WSARecv(). The same function is used for encryption and decryption."
This makes no sense for me, so if somebody would care to explain this in a differen't way, it would be great!
By the way, he also said how a true packet in this game would look like
| Code: | | [nHeader WORD] [nLength WORD] [nSecondaryHeader BYTE] [nTertiaryHeader BYTE] [additionalPacketData] |
"Note that the first byte will ALWAYS be zero if decrypted. Packet length comprises of the entire packet; nHeader and nLength are not excluded from the length.
The packet encryption is a self-modifying XOR table. Meaning, it is impossible to statically decrypt packets (such as this one) without knowing the XOR table (changes with versions) and the preceding packets sent before it. Knowing this fact, this makes this "release" utterly useless."
I know the basic stuff of Packet editing.
Sniffing, sending, filter's etc.
I was planning on sniffing packet for Purchase fail and make it Succeed.
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
