Hawaii Revised Statutes Division 5. Crimes and Criminal Proceedings § 705-500

(1) A person is guilty of an attempt to commit a crime if the person:

(2) When causing a particular result is an element of the crime, a person is guilty of an attempt to commit the crime if, acting with the state of mind required to establish liability with respect to the attendant circumstances specified in the definition of the crime, the person intentionally engages in conduct which is a substantial step in a course of conduct intended or known to cause such a result.

(3) Conduct shall not be considered a substantial step under this section unless it is strongly corroborative of the defendant's criminal intent.