Is it possible to mining BTCitcoin without any capital/asset?
If you can "borrow" your mate's computer to mine altcoin and then trade it into bitcoin, then yes, it's possible. 
Day's of mining with CPU and GPU are really over. In most cases it cost's more in electricity.
You really need to look into asics. But it will take cash, you can't do it with no assets. You could also buy direct but again takes money