Hacking pokemon and pokerus?

Hi,
I've been really interested in the competitive end of the game and wanna make sure I'm using legitimate pokemon. I've been spreading pokerus to my pokemon i was going to ev train. I'm positive my pokerus is hacked and am wondering if i made a grave mistake.
Also recently i lucky bread a shiny pinsir. Sadly i forgot to give her quick attack. If i got a tool and gave quick attack and edited nothing else would it still be legal or would it fail checks?

Please help.

I didn't find the right solution from the Internet.

References:
www.neo
.com/forums/36119/t2274490-
animated introduction video

Thanks