can anyone pls suggest any good app to open password protected zip and rar files ?
Search for ArchiDroid in the market and it will do your job... It extracts password-protected RAR, ZIP, TAR, GZIP, BZIP2 and 7zip files... amazingly it is free... Unrar didn't work for me but this one works like a charm
There are so many Password Recovery Software are available which you can try your self.