Brennan Posted June 2, 2007 Share Posted June 2, 2007 I forgot a password for one of my rar files and I need to get it back. I did search for a password cracker and all it comes up with is either RAR Password Cracker or Atomic RAR Password Recovery. I really don't want to spend money to crack my own file. And was wondering if anyone knew a free password cracker Quote Link to comment Share on other sites More sharing options...
deleted Posted June 2, 2007 Share Posted June 2, 2007 What OS are you Using. I assume Windoze. Quote Link to comment Share on other sites More sharing options...
Brennan Posted June 2, 2007 Author Share Posted June 2, 2007 yeah windows Quote Link to comment Share on other sites More sharing options...
deleted Posted June 3, 2007 Share Posted June 3, 2007 If you just need it for one rar archive just use a trial program I have had a look around and all the free ones are for *nix systems. Quote Link to comment Share on other sites More sharing options...
Deveant Posted June 3, 2007 Share Posted June 3, 2007 theres Rarcrack for Win, but i think it sucks... its brute force, so it could take a long time, and still not get resaults. Quote Link to comment Share on other sites More sharing options...
digip Posted June 3, 2007 Share Posted June 3, 2007 Can't you create another rar file with a different password and hex edit the one to match the other?(so long as they are the same password length) I know some passworded programs store it in the same place in the file, like in the last so many bytes of the file, and you can defeat the password by creating another file and just hex editing it, copy it from one to the other. I don't know the mechanizm for RAR's password creation but if its similar in the way it stores it, it should be defeatable, in theory. I remember someone doing this with steghide and jpegs by recreating an image using abc as the password and then hexing out the orginal and putting in the one they created, and getting the hidden message in the image this way. Quote Link to comment Share on other sites More sharing options...
Sparda Posted June 3, 2007 Share Posted June 3, 2007 The password is used to encrypt the data of the files inside the archive. It doesn't work like a user account password on (say) windows. Such a method would be completely useless for an archive. Quote Link to comment Share on other sites More sharing options...
digip Posted June 3, 2007 Share Posted June 3, 2007 The password is used to encrypt the data of the files inside the archive. It doesn't work like a user account password on (say) windows. Such a method would be completely useless for an archive. So its more of a salt than simply a stored string in the file. Makes more sense as it would pobably be easily defeated otherwise.... Quote Link to comment Share on other sites More sharing options...
Shaun Posted June 3, 2007 Share Posted June 3, 2007 The password is used to encrypt the data of the files inside the archive. It doesn't work like a user account password on (say) windows. Such a method would be completely useless for an archive. So its more of a salt than simply a stored string in the file. Makes more sense as it would pobably be easily defeated otherwise.... It's not really a salt, it's an encryption key. Quote Link to comment Share on other sites More sharing options...
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