It's hard to be certain from this picture, but this looks like a standard JST-HXP connector. If it is, you could just buy a box of the connectors off Amazon https://www.amazon.com/gp/product/B01ISDHQ3Y/ and some wire and quick disconnect terminals from FocusAttack and make a new one. The only tools you'd need are some wire cutters, a wire stripper or hobby knife (I'd recommend the wire stripper though) and a crimping tool for the terminals.