Unlocking a rar / zip file without passwords

[Laluzerne69]

Does anyone know how to unlock rar / zip files without needed to use any passwords or know how to find a password for rar / zip files? I got a couple off of kemono and I'm having trouble trying to get one open. If you know how to, please tell me. Thank you.

 

[r37r05p3C7]

Does anyone know how to unlock rar / zip files without needed to use any passwords

what is the point of having a password protected archive if it can be opened without a password?
in other words, it's not possible

 

[Sphere42]

what is the point of having a password protected archive if it can be opened without a password?
in other words, it's not possible

Well, there are tools to brute-force the password and archive files don't support most of the methods which make such attacks infeasible elsewhere. Pretty much the only option is raw entropy, and in my experience few artists use extremely long arbitrary sequences. Indeed many seem to use short thematically appropriate strings or re-use the same password for all their content, and write them out in plain text messages on Patreon etc. - since kemono was mentioned already there's a decent chance a post, dm or a forum thread already has the password and you don't need to crack anything.

Plus the tools themselves such as cRARk aren't even illegal, because they can be used to unlock archives you created yourself then foolishly lost the password to. Of course using them for piracy is illegal but that's not enough to get pure tool providers off the open web.

 

[Django_Farney]

Well, there are tools to brute-force the password and archive files don't support most of the methods which make such attacks infeasible elsewhere. Pretty much the only option is raw entropy, and in my experience few artists use extremely long arbitrary sequences. Indeed many seem to use short thematically appropriate strings or re-use the same password for all their content, and write them out in plain text messages on Patreon etc. - since kemono was mentioned already there's a decent chance a post, dm or a forum thread already has the password and you don't need to crack anything.

Plus the tools themselves such as cRARk aren't even illegal, because they can be used to unlock archives you created yourself then foolishly lost the password to. Of course using them for piracy is illegal but that's not enough to get pure tool providers off the open web.

Hey, thanks for the clarification, do you happen to know any free software to discover passwords for compressed files, that doesn't use command-line?

 

[r37r05p3C7]

I initially said it was impossible to prevent people from wasting their time.

Here is a longer, probably more effective explanation of why you shouldn't even try:

1. Widely used archive software such as 7zip or WinRar was created 20 years ago. People who have knowledge of major security holes in them will not share them with you for free, and there is certainly no software out there that will use them to crack passwords.
2. This leaves us with brute force attack - trying every possible password until we get a match.
3. Both 7zip and WinRar use AES encryption which has built-in brute force attack protection. Even using modern multicore CPUs, you will get a rate of at most 10 thousand passwords(hashes) per second. Here is a good approximation of how long this will take for different passwords:
   You must be registered to see the links
   . Enter any password and look for the "10k" result.

Even with an "easy" password like "ilovemypatrons", you are looking at centuries using CPU, or weeks using GPU.

If you still want to hammer your system just get some more porn, you can use open source tools like

You must be registered to see the links

and

You must be registered to see the links

. Yes, they are command line tools, but GUI apps will use the same algorithms and also charge you for it.

You must be registered to see the links

 

[DesMoines1948]

force attack there is one Advanced Archive Password Recovery
7Z is impossible and the pass is more than 4 letter or more is no way