Transpile WebAssembly executable to i386 ELF which is impossible to run but which looks nice in decompiler.

As you can guess from name, this was made with IDA Hex-Rays in mind, WebAssembly decompilers already exist (JEB).

Based on modified wasm2c tool from WABT.

git clone https://github.com/vient/wasm2ida
./wasm2ida/wasm2ida.py -h

• Mark all funcs as noinline
• Create stubs for imported funcs, link with them
• Check that module use only one memory block
• Check that module does not import memory blocks
• Merge memory sections in compile time to one array in .wasm_data section
• Interpet memory offsets as raw pointers, .wasm_data is mapped to 0
• Insert UD2 after wasm_rt_trap
• ... it would be nice if IDA somehow detected automatically that wasm_rt_trap is noreturn and not rely on __builtin_trap
• Use C++ mangling instead of WebAssembly one so IDA will set correct function types automatically
• Do something with w2c_g0 register, all local variables need to be allocated on x86 stack

• Mulpiple memory blocks
• Extern memories
• Extern tables