use google...
plenty of sites offer subscriptions for hacks, these get updated regularly to keep them working + they offer install support and guidance etc. Problem is, you would still likely get banned, although it may take slightly longer than say using a public hack.
you will always hear stories of "cool" people using their own "personal" hacks and staying undetected for months but your chances of finding someone who is willing to share or sell this code with you are slim. best bet is to either code your own or get a sub with a hack site.