Like bubba's saying, you either have to have an IOSU exploit to get the keys (or have them already like F0F does), to decrypt an ISO, or a kernel/IOSU exploit to disable memprot to dump files directly from memory/the loaded filesystem. That's why we're working on a kernel exploit in the first place, once we can dump files we can make a homebrew application to load new ones after we modify them. That's how chadderz did it too.