Trasnfering from x and y

How do you transfer pokemon from x and y to ORAS without PKhex? You cannot use bank because that uses Nintendo’s servers. I need charmander from x and y because… I just need it.

You can trade between XY and ORAS.

Like a regular trade?

Yes, regular trades are possible between XY and ORAS. It’s the same for SM and USUM.
Just a trade between XY/ORAS and SM/USUM is not possible.