Boringproxy as a vnc repeater

Hello

boringproxy is good to tunnel servers on which we can install the daemon directly.

we are looking for a solution for tunneling/ repeating vnc servers (iot devices) on which no boringproxy
daemon can be installed

as boringproxy software cannot be directly installed on the vnc server machine (closed machineà

is it possible to configure a machine on which run boringproxy deamon behind the NAT
to work as a vnc repeater ?