Is it possible to reverse engineer ZIP file with password, and get the password or the data that is containing. I'm wondering because there is challenge in hacking lab which is to extract file from ZIP with passwd protection, and it's category is reverse engineering but when I look at the HEX dump I only see the file name.
Reverse engineering zip file
disassembly
From http://www.elcomsoft.com/archpr.html -Certain ZIP and ARJ archives can be unlocked and decrypted in just  minutes, provided that you have at least one unprotected file from  that archive at your discretion. It does not matter how long and  complex the password is! If you have a file from the encrypted ZIP  archive in your hands, the whole archive can be usually unlocked in  minutes by applying the known-plaintext attack.After carefully analyzing the algorithms and implementations of  password protection in different versions of WinZip, ElcomSoft  developed a work-around solution to allow quick guaranteed decryption  of certain ZIP archives instead of performing lengthy attacks. If an  encrypted ZIP archive was created with WinZip version 8 or earlier,  and if the archive contains 5 or more files, Advanced Archive Password  Recovery can unlock the archive and decrypt its content  guaranteed!  A modern PC takes just under one hour to finish the job.If those special cases don't apply, you'd need to apply standard brute-force techniques. Either way, you'd want to use Advanced Archive Password Recovery or a similar tool.