I don't see any evidence whatsoever of Russian involvement or support of Hamas. Russia's diplomatic stance is the same as Norway's and Ireland's.

In 1967 & 1973 the USSR provided massive military support. The Arab armies all used Soviet equipment and were quickly re-armed when we beat them.

Russia is not supplying a single bullet, shell or missile to Hamas or Hizbollah.
They can't afford to as they need every one for the Ukraine conflict.

While Russia is happy that the US and Europe is distracted and diverts resources from Ukraine, Russia itself cannot afford to be distracted or divert resources.