It looks like it's possible now to make an ELF/DEX file for android like this.

ELF by @MazeGen
https://board.flatassembler.net/topic.php?t=21327

DEX by @MaoKo
https://board.flatassembler.net/topic.php?t=21689

But is it possible to make an APK for Android using FASM/FASMG?

Using ELF/DEX is not so user-friendly if we want to share it with other people, so only we can use that.

My decision of using ASM is because I really want to make a small and efficient Android app but it looks like it's not possible and we need to rely through inline and to the bloated sdk of Android.

An APK is just a ZIP archive that is signed. All steps except perhaps signing are possible using fasm.

Although if compression for the ZIP is desired, it might be a bad idea to use FASM for that due to FASM’s memory consumption when compile-time variables change their values.

I can open APK with 7zip, but not sure what is the compression file format.



This is nice!!! But even a simple "Hello, world" example is such complex. And I did not know FASMG support binary Dalvik executable format. It is in bytecode, as I just learned from : https://source.android.com/devices/tech/dalvik/dalvik-bytecode

A signed APK built by Android Studio (Java) contains .dex binary.
But APK built with Flutter contains additional shared .so lib files, which I think resulting in larger APK file (they call it fat APK).