@6uta said:
Somehow I get help from the search engine and find a place which give me the answer.
Is it the correct way? or it is some kind of cheating?
If you mean you just googled the encrypted password and found the code online that decrypts it, then no that is not the correct way. A few people have reported that there’s some public examples of where people have put the decompiled code online, but unfortunately there’s not a lot I (or HTB) can do about that.