Question: websynth/x86 dasm work method and tools?

[pachuco]

How did you disassemble websynth and have it still be in one piece, working properly?

I have in the past tried for separate project, IDA for dasm and winSDK MASM for reasm.
Let's just say the reassembled code worked, but behaved differently, buggy.

So, what's your tooling and workflow?
I see NASM for reasm at least.

[M-HT]

Very short answer:
I used IDA to find out which parts I want to disassemble and I used SRW tool (from my SR project) to do the disassembling. As you noticed I use nasm for assembling.

Some more details:
It's not a universally applicable process. It depends on whether the code/data is "nicely" structured in the executable.
There are parts in the executable which I'm not interested in, for example GUI.
The parts that I'm interested in (and want to interface with) are:

• midi event processing (on input) - standard events and/or sysex events
• audio output generation (before being played)
• datafile reading and making it available to the synth
• configuration and initialization of data used by the synth