Well, not really Plato himself, so much as Neoplatonism - the Renaissance sages couldn't tell the difference. But, yes, it was in philosophy above all that the Renaissance thinkers sought to recover the supposed lost wisdom of antiquity. As I pointed out, though, much of this supposed lost wisdom was based on works from late antiquity (such as the later Neoplatonists, or the Hermetic corpus) and had been developing throughout the Middle Ages.
The history of the translation of the works of Plato into Latin bears this out.
This was done in Florence by the linguistic genius Marsilio Ficino at the request of Cosimo di Medici himself, who ran a form of academy of sages.
Except half way through this work, Cosimo appeared and ordered all work on Plato stopped.
They'd come across the corpus of texts known as the Hermetic, attributed to Hermes Trismeghistos (sometimes equated with Toth, the specific text is Toth teaching Horus about the nature of reality).
These things were considered waaay more important than anything Plato had to say, so the Hermes Trismeghistos translation was completed before Plato.
Ficino is also known to have spent most of his days engaged in Natural Magic, reinforcing the cosmic harmonies around him through magic practices.
He belonged to the same circle as Giovanni Pico della Mirandola, who was the one to translate the Kabbalah into Latin. Also in Florence, and also a work accorded tremendous status by the Renaissance scholars.
This was very much what the Renaissance was about: You try to find texts as ancient as possible in order to bring your knowledge of the world and God as close to the origin, Genesis that is, as possible.
Plato was considered to have lived later than Hermes Trismeghistos, i.e. HT knows better. The same goes for other presumed writers within the Hermetic Corpus. There's a book attributed to Moses himself for instance.
It wasn't until around the mid 17th c. where textual criticism turned up that all these texts were in fact late antiquity and had no real claim on the anciannity they derived most of their status from.