there are only two ways to recover the password , Brute force and dictionary attacks
dictionary one is useful if you can assume the set of passwords. but Brute force is useful if you have no idea about the password but it may take time so it's depend on the processor power and the complexity of the password.
internet eken gaththa file ekak nam link eka denna,pass eka hoyala denna puluwan wey,nathnam dictionary,brute force attack ekak danna thama wenne character legth eka danne nathnam amaruy,godak wela yanawa,symbols dala thiyenawanam etath wada amaruy