Cheat Engine

[blackjack4494]

Hello there,
so I just registered here to get some advice.
I am playing that Game called Stardew Valley some of you may heard of it it is like older Harvest Moon, a Farming Game.

The Game itself is written in C# using MS XNA Framework. It is probably managed Code (cannot post the url to stackoverflow but search for difference between managed and unmanaged or use question id 3563870).

I cannot find any static pointers. Everytime the Game is reopened (or even another savegame is loaded) the old addresses/pointers won't work anymore.
You can try it yourself if you have the Game.
I tried scanning multi level pointers and everything else I could as far as my CE knowledge/skills can lead me to.

Maybe I should state my goal. I do not want to cheat, hack or anything. All I want is to READ specific data like health, stamina etc. Actually a quite simple task you think.

So since there are no static pointers at all we need to do an aobscan and read a register. That should give us a usable address where we can use offsets to calculate other addresses to get more data.

Now my problem. With CE you can create a trainer, do your aobscan, allocate new memory, set up some labels and then read the specific register to get your baseaddress.
But I want to do it in C# (or C++ with inline asm and compile it as a dll tho I would write that method to have a parameter with the actual pattern to scan for since it changes because the multiplayer version is beta and updates are quite often and change those bytes often).
I would then have a super simple REST service on my server with a list of the game version and its specific bytes to search for.

In my understanding I need to get the value of the register. And that is not easily possible with just pattern scanning afaik (correct me if I am wrong).
And since you cannot use inline asm in c# I am forced to at least write a c++ dll since I do not want to write that whole thing in c++.

Is it called code cave what I am trying to use? I basically hook into the process look for those bytes, save the jump address, change the asm line add my own then do the original asm line and return the jump address we saved earlier? I have never done such thing before.

I hope you can help me somehow. Toss me into the right direction or whatever. I am glad about any help.

If it help I can do some screenshots or post some code.

As for actual code. I used a trainer someone else made just to see assemblerscript. Then I wrote a simple c+ console application but there I need to paste the base address which I have to manually extract from CE right now.

[Meas]

Because the game is already in C# why not just use dnSpy and patch the C# code directly? Much easier and you have the full power of .NET and existing game dlls.

If you want to just read bytes from memory instead you can use ReadProcessMemory and WriteProcessMemory. Use PInvoke in C# to call those functions.

In general: if the game is SP and doesn't have Anti-Cheat, just patch the code because that's usually static. Don't bother with pointers. Games keep getting larger and larger and pointer scanner takes a very looong time.

[FreeER]

[atom0s]

There are a lot of mods for this game already that handle things via reflection and runtime recompiling using things like Mono.Cecil.