All people are born with the freedom to do anything they feasibly can and wish to do. This obviously ultimately conflicts with the freedoms of others in certain cases, therefore humans have come together to institute systems of order with procedures to facilitate proper environments for co-existence. There have been a multitude of systems, with different origins (religious, secular, tribal, divine-right, and so on) but almost all systems are based on the aforementioned criteria and objective.
What we know as "rights" are essential restrictions placed on the governing body relative to the consenting will of those that are being governed. Rights always have to be fought for and their value is only determined by the worth the governed populace place upon those rights, even if it is written as a socially binding contract.
Therefore, my point is that rights at essentially worthless unless a group of people assigns value to it. Sometimes it's done by peaceful means, sometimes it's done through violence. So I'm not sure if there exists such a thing as fundamental rights.