Not the specific, but there's an Korean transliteration rules officially recognized in South Korea. You can check the Spanish-Korean transliteration rule in the Korean Wikipedia: https://ko.wikipedia.org/wiki/%EC%9C%84%ED%82%A4%EB%B0%B1%EA%B3%BC:%EC%99%B8%EB%9E%98%EC%96%B4_%ED%91%9C%EA%B8%B0%EB%B2%95/%EC%8A%A4%ED%8E%98%EC%9D%B8%EC%96%B4

My transliteration is based on the transliteration rules that officially recommended by National Institute of Korean Language (NIKL). You can check one of the rules on Korean Wikipedia: https://ko.wikipedia.org/wiki/%EC%9C%84%ED%82%A4%EB%B0%B1%EA%B3%BC:%EC%99%B8%EB%9E%98%EC%96%B4_%ED%91%9C%EA%B8%B0%EB%B2%95/%EC%98%81%EC%96%B4