Kabuto Sage Mode:
he was taught senjutsu by the White Snake Sage where he gained access to a Sage Mode. This, together with the research and self-modifications based on Jūgo's clan's abilities, also allows Kabuto to passively and continuously absorb natural energy without assistance, allowing him to potentially maintain his Sage Mode indefinitely. According to Kabuto, this meant that he was no longer a snake, but had instead transcended into a dragon
Naruto Sage Mode:
With the strength of his chakra being so high, Naruto's training was able to expand to include the same senjutsu arts of his late sensei Jiraiya. He learned this in Mount Myōboku, showing an even higher aptitude for it than Jiraiya and ultimately learning how to perfectly enter Sage Mode. In order to achieve this, Naruto had to learn to sense and then gather the natural energy around him and perfectly balance it with his own chakra. Once mastered, Naruto was able to perfect the Rasenshuriken, so that he could throw it, and learn Frog Kata: a taijutsu style that uses the natural energy around the user to enhance the range and the potency of their attacks. In Sage Mode, Naruto's overall physical abilities are dramatically enhanced to the point where he could throw entities much larger than himself with little to no effort.
Sorry That I Typed To Much, I Just Like To Get My Point Across.