pull strings

pull strings or pull wires  {v. phr.},  {informal}

To secretly use influence and power, especially with people in charge or in important jobs to do or get something; make use of friends to gain your wishes.

If you want to see the governor, Mr. Root can pull strings for you.

Jack pulled wires and got us a room at the crowded hotel.

- wire-puller  {n.}

Bill got a ticket for speeding, but his father is a wire-puller and got it fixed.

- wire-pulling  {n.}