Any country found to be helping Russia circumvent sanctions would be jumped on hard. A blind eye might be turned if an aircraft was AOG and needed a new fuel pump which could be supplied from an airline’s existing spares holding, but ordering all of Aeroflot’s parts requirements on their behalf and shipping them on wouldn’t be acceptable.
There was a problem a few years ago with a Norwegian Air B737 MAX which made an emergency landing in Iran and required parts which couldn’t be sent due to sanctions, it spent 10 weeks on the ground waiting for a new engine.
A subscription to JEPPESSEN paper charts could easily be purchased in another country and forwarded to Moscow where it could be reproduced without any identification and distributed. Having to enter new waypoints and create routes manually would be quite tedious and might involve a navigator being carried for that purpose.