qiling VS ddisasm

Sounds more like r/ReverseEngineering. If what you want to do is some dynamic analysis or just play around, maybe try using qiling, it's built on top of unicorn and is made by the same authors. It will take care of loading the file for you.

https://github.com/qilingframework/qiling Is probably what you are looking for

It is s binary emulation framework, which you can use to emulate different binaries for different architectures. On top of that you can use Qiling APIs to debug the emulation process, hook syscalls, etc. It's like Unicorn + Qemu + Frida. More info here: https://github.com/qilingframework/qiling

qiling is built on unicorn directly. qiling focuses on emulating binaries (read: emulating a single program and not an OS). It uses the binary blob work to load binaries and their associated shared objects. It then hooks the OS calls and presents an interface to the program as though it has interacted with an OS. see here

We started this project since 2019 Nov, currently they are around 70+ developers and 2,200++ stars in our Github page (https://github.com/qilingframework/qiling)

The closest you can get to something like you describe is https://github.com/GrammaTech/ddisasm, but even that won't give you a byte-exact result due to alignment and instruction encoding differences. And it's not perfect, you'll get subtle new bugs. And distributing it is problematic.

Reassembling is easier but still pretty hard if you want something actually modifiable cause you need to distinguish code and data and find cross-references. There's a research project: https://github.com/GrammaTech/ddisasm

It would be interesting to explore a different path: https://github.com/GrammaTech/ddisasm