Krakatau VS PINCE

Since Java bytecode uses MUTF-8, which encodes astral characters as surrogate pairs, I've had to implement this conversion in Python multiple times, in Krakatau and Enjarify.

Not sure how applicable this is for your project since my compiler was written in Python, but I used Krakatau.

Here is one that disassembles the bytecodes and reassembles them https://github.com/Storyyeller/Krakatau .

There's an additional problem that unlike regular assembly or LLVM assembly where there's some fully supported standard format, Jasmin is a third party program and different JVM assemblers and disassemblers disagree on so many things. There are also some newer assemblers and disassemblers like Krakatau you could try instead. Krakatau has different syntax than Jasmin or javap.

Krakatau - Java decompiler and disassembler.

The compiler outputs bytecode in a text format, which can be assembled into .class files using the Krakatau assembler. Figuring out how to translate features like nested functions and nonlocals to JVM was pretty interesting, and having access to Java’s standard library made the whole thing much easier than expected.

Another one could be PINCE Github, literally the same ui as Cheat Engine!

Another project worth taking a look at, as an alternative to CheatEngine, is PINCE.

nice, haven't heard of that one! unfortunately it seems like it doesn't support it yet either: https://github.com/korcankaraokcu/PINCE/issues/35

if anyone is interested in this you can find it here https://github.com/korcankaraokcu/PINCE

it can run via wine/proton with ceserver, speed hack does not work tho but there is https://github.com/evg-zhabotinsky/libspeedhack which does, there is also a alt to cheat engine called pince which would be less complicated to setup https://github.com/korcankaraokcu/PINCE

PINCE - GDB front-end/reverse engineering tool, focused on game-hacking and automation.

As for more active alternatives, maybe consider PINCE? It's GitHub was updated in the past week and it has a Discord server.