Yes, I believe that all Kabalah comes from the Torah based on my experiences uncovering 2 hidden things from the Torah and Mishnah. I speak from experience so I know that I am correct but the only way for you to know this is to wait until you find something. Some supernatural help is also needed to uncover secrets of the Torah, so it helps if you discover the hidden method of Ruach Hakodesh (don't get so excited, you'll only reach a low level after a lot of practice but it will be enough) which I can teach you but this is a borderline secret so I won't write about it here. All I can say is that after I studied stuff on my own from the Torah for a long time, I opened up the Rambam to the chapter where he talks about Ruach Hakodesh and to my surprise he said exactly what I discovered in his chapter. Not only that but I understood more than what he wrote as well. Well, I was shocked for a while. From then on I was encouraged to continue with my studies. But now I have no time unfortunitly.
If you are really frustrated then do a big Mitzvah. Hashem likes to grant temporary Ruach Hakodesh to those who pass big tests or who do a big Mitzvah and you may uncover something based on this experience.