Origin of Phrases - B
By hook or by crook
Meaning: To accomplish something by whatever means necessary.
Example: Don't worry, by hook or by crook we will get to the airport on time.
Origin: Curiously Hook and Crook mean essentially the same thing.
Hook is a curved or bent device for catching, holding, or pulling. Something intended to attract and ensnare.
Crook is an implement having a bent or hooked form.
Hence the "hook" is used to grab whatever it is you are trying to get, "crook" is just another way of saying hook.
I am reminded of "beg, borrow, and steal" which means the same thing. Note the "steal". "Crook" is also a thief. Hence "by hook or by crook" also impies you are willing to resort to theft.