@dalias @dfeldman Everything? There's a ton of software out there where you're stuck with binaries.
Mono for example where standard library and part of the toolchain is just binaries: https://hacktivis.me/notes/mono-6.12.0.122_deblob.log

And there's a ton of executables in tarballs that go unnoticed and even when they get noticed, nobody would bat an eye on seeing ones in the test folders, which then you could also just trivially hide from scanners.