This is a relitively easy KeyGenme with a few simple tricks. There are some other things going on that I shall not describe here, as it is written in ASM and thus pretty easy to read.
This is a KeyGenme so ultimately i'd like to see some cool keygens. If you are unable to do this then you are also permitted to do a self-KeyGen, or a loader.
That's it. Have fun and feel free to ask any questions.