Cyber Necromancy

In this presentation we will be discussing the path we took to successfully develop our own private server for Metal Gear Online on the Sony PlayStation 2 and PlayStation 3 video game consoles. Interestingly enough this was a private server that was developed after the original was already taken offline, so we did not have a live active server to help with the reverse engineering. Due to this we ran into some issues but ultimately succeeded. We believe that the details of the techniques that we used will prove useful for anyone attempting similar actions in the future. The topics that we will discuss in this talk will cover a wide range of high and low level issues related to network protocol and binary reversing. We will begin with an overall survey of the general problems faced by anyone attempting this type of work. The talk will quickly delve from the high-level and simple issues into the more technical aspects of reverse engineering in the blind. We will be including the techniques we used to determine the protocol and payload responses that the client was expecting. Describing in detail how we honed in on common traits that we expected to see on the network, using open source knowledge and binary level reverse engineering of client code to determine the expected response. We expect the attendees of this talk to walk away with knowledge that will help them in the future when working on similar projects or any activities related to protocol reverse engineering.