Winzip 256bit password recovery

4

47Shailesh

Adept
Hi All

I have many winzip archives which I have encrypted(256 bit encryption) long ago, and now I have forgot the passwords of the archives.

I have tried:
1. ZIP Password Recovery 6.2 but it's paid and doesn't search over 3-4 length passwords,

2. PicoZip it's crap doesn't works

3. Many other which uses brute-force which will take thousand years to decrypt.

Is their any good tool that I can use to decrypt. ZIP Password Recovery 6.2 works good for 3-4 which I have tested.

The files are very important and if their is no other option then I have shell out $30 to buy VSPR 6.2 :(
 
your best bet is brute force, especially if you can remember a few things about your password, like its approx length (say 6-9)... just need to find a good free program and leave it running for a few days :)
 
Your password is 256 bits? That would be what, about 63 characters long? I doubt you could brute force that in your lifetime if you're starting without a clue as to what it COULD be. However if you have a clue of what it might be, you could create a password list file using any list creating software and narrow down your brute force attempts.
 
^^ afaik, cracking 256 bit aes is next to impossible if you forgot the password. I tried once on a winrar file with just a 6 character password (which i knew) and only aes 128bit encryption but wanted to test the so called paid softwares. none of them could crack the password even after 1 day continuous brute force or library method. the permutation combination are just too much for the software to handle it.

just rack your brain till you remember the password. better than putting dollars on so called softwares that cant help. or you can always search for the freeware source of the software ;)
 
Just to share the joy, got my files decrypted yipeee :))

It took full 4 months for the brute force to decrypt the password it was 7 char 256bit with special chars and in both case.

I used 478 2.8ghz processor for brute force. A better processor could have done the job much faster.
 
what u ran that pc for 4 MONTHS just to decrypt the password.

hats off to u man

u must have had real important data in those protected files

i salute you

4 months .............
 
@free radical i was running it on my o'l Wipro PC the most stable I have with 2hrs power backup :) I used ahem version of "ElcomSoft Password Recovery".

@kuduku yes very imp, it has the snaps of my ex gf :) and few college group snaps and docs which I encrypted to aviod access to my ex roomies
 
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