Winzip Password Recovery

Hello Experts,

I had an Zip file, which I made a backup some years back and it was password protected, and
I forgot it. There are some recovery tools but mostly they use dictionary attack or Brute force.
But normally I wont keep dictionary words as passwords also they wont be short enought to
brute force. So is there any way to get the password or to recover the files.

I had an idea, Basically Iam a programmer and can we modify the winzip32.exe file so that we
can bypass the password authentication?

can someone shed some light in this regard.

Thanks,
LVL 4
venishjoeAsked:
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war1Commented:
Hi venishjoe,

Here is a couple recovery tools for zip passwords

Zipcure
http://www.zipcure.com/

Zip Password
http://lastbit.com/zippsw/default.asp

Cheers!
Exchange_AdminCommented:
I have used ARCHPR in the past to recover a password protected ZIP file.
Rich RumbleSecurity SamuraiCommented:
Elcomsoft is the fastest in our opinion, it's AAPR now (instead of ARCHPR).   http://www.crackpassword.com/products/prs/integpack/archive/features.php
 It's not that the exe is authenticating the zip file, it's that the zip file is encrypted, it's gibberish, scrammbled, with no way to reverse the code, unless the proper password is found/used. There are different attacks that can help speed up the process. Known-Plain-Text is one of the fastest ways of recovering data. If you have an exact copy(unencrypted, in paint-text), of one of the files that is in that zip archive, you can get the rest within minutes.Otherwise your stuck with BruteForce/Dictionary attacks. You can make it go faster by setting the minimum password lenght to 6 or 8 if you think your pass's are that long, and it will start from there.
-rich

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