The base is original from the producer (chords and melodies), but is complemented with elements that complement the song that come from samplepacks, usually, vocal chops, guitars, wobbles sections, glitch effects. It is the standard in which most of producers work, in a project you will find MIDI files made by the producer, but also melodic loops.
Main chords are processed sample from Big Bad Bundle pack. There is also original flute melody made with Xpand vst.
Instrument Main sample
Sample pack Nick Mira - Big Bad Bundle
Loop name nick mira_gettheloot_148bpm