[...] I'll take few days to think about the situation. Not in regard to you in particular, but in regard of the whole problem.
So, I thought about this, weighting the pros and cons.
In one hand, this tool prevent authors to protect their games against people who want to stole it, what isn't something I really want to do.
But in the other hand, it also permit to the scene on its whole, to do its job. Whatever it's a modder or a translator, this tool permit them to works even on "protected" games. It also offer to the community the possibility to provide patches and to verify that the game don't do shady things in the shadow.
Therefore, the question was to decide if the help this tool provide is more important than the risk it present. And it's the last game presented,
Girl House, or more precisely the particular version of this game, that gave me the answer : Yes, this tool is more helpful than harmful.
This became obvious when I cracked the protection, and discovered a totally different game ; a game without what seem to be a login step... What mean that this tool have another utility, it also prevent some peoples to do dick moves.
Now, back to
Girl House,
Helzing . It can not be cracked in one step, because it's not just the rpyc files of the game that are encoded differently.
Normally, the author distribute Ren'py as it, including the original .rpy files from the core. But like the team that translated this game made some bad move (the login step), they altered those files and only kept the rpyc ones, in order to, they thoughts, protect their shady works.
That mean that you have to use a dedicated version of this tool (link in OP), then either move the content of the "/game" directory into a blank Ren'py distribution, or use the content of the "/renpy" directory of a blank Ren'py distribution to replace the one of this game.
It would have been possible to proceed automatically the altered part of the core, but it would have left the alteration they did, what would have been a really bad idea.
Note that it's not impossible that this variation works with other games distributed by those translators. Therefore I included a verification of the signature itself, and anything that will match it will be proceeded. But be warned that there's no possibility to effectively ensure that the encoding will be the same. So
keep a copy of the game somewhere, just in case.