Cheat Engine

AbeX300 · How do I cheat? Reputation: 0 Joined: 29 Dec 2013 Posts: 6

Game: Momodora II
Modifying: Current Health
Goal: Address' Static Pointer
Problem: Opcodes don't have anything wrapped in [ ].

Right now, I'm scratching my head on how to find out what the current health address' pointer is!

Here's how my process goes:

1) I get the game and Cheat Engine running.
2) I go through the scanning process. It started out with the All value type and Unknown Initial Value scan type, but after doing this process several times, Double seems to be the most appropriate value type (as in, easiest to read). Search for value of 8, get hurt, search for value of 7, find address.
3) I use both Find out what accesses this address and Find out what writes to this address, then do the following ways to change my health: Health Pickup, Save Bell, Take Damage, Love Letter (Max Health Increase), Praying, Dying to Reset

No opcodes appear to write to the address, but there is an opcode that accesses it, and it's been bothering me since:

00402ABC - FD - std

faizangmc · Posted: Thu Jan 02, 2014 4:27 pm Post subject:

why dont you do a pointer scan? Its much easier than this method.

Right click on the found address. --- > Pointer scan. Do the scan.
Exit game. Restart game. Attach cheat engine to game. Find the address again. Copy the address. And in the previous pointer scan result. Click on pointer scanner tab ----> Rescan. Enter the address. Click ok. Let it scan.
Do this another time. You will get your static pointer.

Dark Byte · Posted: Thu Jan 02, 2014 4:49 pm Post subject:

The actual instruction is "repe movsd" which copies the contents from ESI to EDI for ECX*4 bytes (12 bytes in this case)

Anyhow, before you start debugging I recommend you first find an address that actually has an effect in the game, instead of being a temporary storage holder
(Same for pointers, don't even bother with them until you have found the correct address with the correct type)

Rydian · Posted: Fri Jan 03, 2014 12:16 am Post subject:

This is an older Game Maker game, right (i.e. not built with the new version that can make games cross-platform)? These things annoy the crap out of me because even when you do find addresses that hold actual values, the found code that edits them is almost always "std, repe movsd".

It's sometimes possible to find the code for the engine's built-in values like "health" (assuming the creator used the buolt-in health vbariable instead of assigning a custom one) and "x" and "y", but any custom variables set up by the creator seem to be run through a script interpreter and not assembly for themselves, and from what I've googled (which includes finding older threads on this forum on the subject), people mentioned that it'd likely be easier to just run something to edit the GML script yourself in the .exe.

Thankfully the newer versions of Game Maker actually seem to build games differently (since they can do HTML5 and such they can't just run the script in a custom interpreter anymore) so sometimes if you find a newer version of the game it's been built with a newer version and may be easier to mess with.

But yeah I'd like to know an easy way to edit this crap too.

AbeX300 · How do I cheat? Reputation: 0 Joined: 29 Dec 2013 Posts: 6

Sorry for the late reply!