Sometimes the password is included at the end of the file name itself (e.g., Archive_Name_pw_javakiba.rar ).
You can create a simple .bat file to loop through a list of potential passwords using the WinRAR command-line interface. Warning on "Password Cracker" Software rar password list for javakiba top
For advanced users, hashcat combined with rar2john can be used to crack more complex passwords, though this requires significant computing power. Sometimes the password is included at the end