Generally you CAN'T get licenses for forbidden stuff. At least not individual ownership licenses. It's labeled Forbidden for a reason.
Organizations can have licenses for Forbidden stuff, with individual members of that organization authorized to carry and operate the company owned equipment. Like you can't as a regular civilian own a Hellfire missile, but the military can, and authorise it's soldiers to use it.
No, there are no shadowrun teams with legitimate licenses for forbidden equipment. Best they can hope to do is pretend they are part of a group that does have legit access. "Hey, I am totally a member of Ares Firewatch. No, I can't tell you what I'm doing with this artillery piece. It's classified."
-k