Cheat Engine

[Yuri_Treychenko]

I have always wanted to know what you need to do to modify values and push them to the server for MMO type games. I've racked my brain, and I can't seem to figure it out. If someone could clearly explain this to me, it would be really helpful. Since I was a little kid playing Runescape, I've always wanted to try it at least once, regardless of the risk of being banned.

So yeah. If anyone could explain it to me, it would be great. Been bugging me for years...

[zm0d]

Actually, the theory is simple. You take a packet sniffer and editor (like WPE) and get into the game. There you loot something and pick up gold (or any other ingame currency). Now you do this a couple of times to filter out your interesting packets within the sniffer. Once, you found the packets, which are responsible for your "add gold to my character" action, you can send this packets over and over again to the server to get unlimit gold. Simple so far hm? If there wouldn't be checksums, encryption and so on... it's hard to do and even if you succeed in it, you have to fear more than a simple "bann". Hacking a server is illegal and you most likely have to spend a huge amount of $$$ or even waste your life in a small prison with cute, horny guys. ())=====D~

Also the CE forum doesn't support multiplayer game hacking.

[atom0s]

Altering data on server sided games entirely relies on either one of two things:

1. The game is extremely poorly coded and the client is given control of a sensitive data value that in more cases than most, should be handled by the server. This is often done with things like your movement speed, your character position, and some other minor things like a chat filter, uncovering parts of a map visually, and so on. You can ultimately change these values on the client and see immediate results because the server has no control or validation on them.

2. The game handles these variables on the server, however, you are able to exploit them either by packet injection, or finding an exploit to replicate an action that has no checks on it.

In the case of two, there is the both methods of memory editing as well as packet editing. You may be able to freeze a value and reuse it, such as forcing the client to think you have a certain item in your inventory when you don't, and keep reselling it to a vendor. As well as with packet editing, you can keep resending the sell packet for an item after you have sold it and in some cases it will still work and keep giving you money since the game does not validate that you had said item etc.


For other things, you just need to start thinking outside of the box. Don't just think of the specific hacks that everyone does for every single player game. Think of some things that are unique to the game you are playing. Such as certain types of abilities that may be handled by the client and being able to use them on any class/job in the game. Or allowing yourself to see any map at any time regardless if you own it in the game.

I will use Final Fantasy XI as an example, (I am not going to give detail on any of these hacks or explain anything about them, just giving you some ideas):
- You can hack your position.
- You can hack your speed.
- You can hack your animation state. (Healing, sitting, on chocobo, etc.)
- You can hack the ability to see any map on the client without owning them.
- You can hack the ability to use certain job abilities on any class because the client handles it. (Such as Wide Scan)
- You can filter the widescan results via packet injection and only have the client display the exact result you want.
- You can hack/modify the draw distance of monsters and players.
- You can change your characters race / gear / size etc. all in the client.
- You can spawn a certain set of monsters without losing an item that is required to pop them using an exploit.
- You can force show every entity in the game even if they are invisible or not spawned yet.
- You can allow any job in the game to have an advanced mini-map like certain jobs do (SMN, RNG, PUP, etc)
- You can force open any door in the game without needing the key to open it.

And so on. It's just a matter of thinking outside of the box to find other fun things that are able to be done on the client for any game.

[HitIer]

[Yuri_Treychenko]

[atom0s]

[zm0d]

[sikulima55]