I was looking for this dish awhile back too! Unfortunately, no one in Amman prepares it! I even contacted the only Korean restaurant in Amman and they said they don't prepare it either. Since I was majorly craving, I did some digging and stumbled on this recipe: https://mykoreankitchen.com/tteokbokki-spicy-rice-cakes/ . I think you can find everything at supermarkets selling specialty items like @Select Foods Shoppe the other choice is
@Chinese Supermarket , it sells all kinds of oriental food