Not sure about gender, but you can edit abilities using
this hack here. This will also let you edit IVs and EV spreads, natures and Poke Balls as well.
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"The human sacrificed himself, to save the Pokemon. I pitted them against each other, but not until they set aside their differences did I see the true power they all share deep inside. I see now that the circumstances of one's birth are irrelevant; it is what you do with the gift of life that determines who you are." -Mewtwo