Reminds of the old days, when reverse engineering game binaries were a thing. Finding hex strings, no-op'ing if conditions, adding jmp instructions. Many heroes

Reminds of the old days, when reverse engineering game binaries were a thing. Finding hex strings, no-op'ing if conditions, adding jmp instructions. Many heroes forgotten with time as more and more of software onboarded the cloud offerings. I wonder how much of it is still relevant and in what fields?