Sep 14 2011

rarcrack

Win32 version rarcrack 0.2

Introduce:

If you forget your password for compressed archive (rar, 7z, zip), this program is the solution.
This program uses bruteforce algorithm to find correct password. You can specify wich characters will be used in password generations.
Warning: Please don’t use this program for any illegal things!
You can freely modify and redistribute this program under terms of GPL-2 license.

Changelog

Version 0.2 [this is the latest version]

  • Added multiple cracking threads support
  • Added 7z, zip support
  • Archive file type auto-detection

Version 0.1

  • Inital version (rar cracking working)

Using RarCrack:

rarcrack your_encrypted_archive.ext [--threads thread_num] [--type rar|zip|7z]

Everything in [] are optional, rarcrack default crack two threads and autodetect the archive type. If the detection wrong you can specify the correct file type with the type parameter. RarCrack currently crack maximum in 12 threads.

After the cracking started RarCrack will print the current status of cracking and save it’s to a status file. If you want more specific password character set, you need to run RarCrack to create the XML status file (3 sec).

			<?xml version="1.0" encoding="UTF-8"?>
			<rarcrack>
			 <abc>0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ</abc>
			 <current>uU</current>
			 <good_password></good_password>
			</rarcrack>
This is a sample XML file, and you see there is a character set. If you want, you can modify this file and when you start RarCrack again the program will be use new variables.
Warning: Take care when you changing this file, make sure the current password don’t have characters outside the abc[character set]!
Download:
already includes last version 7z.exe, unzip.exe(Info-ZIP’s UnZip)and unrar.exe.
Sku
rarcrack
Description
Win32 version rarcrack
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3 Comments

  • By abu khalil, December 5, 2011 @ 4:18 pm

    it lacks performance
    it repeats the passwd more than 16 times
    also without source to let others check and improve it

  • By Name, September 10, 2012 @ 8:38 am

    It is actually a glorified BATCH program.

    It isn’t “repeating the password,” it is “spamming cout with the currently used password.” (possibly as a silly way of telling you the program has not frozen up).

    This uses a bruteforce attack that tests a single password and checks the resultant extraction against the stored CRC; hence it must extract the entire file over and over until a CRC match is found.

    Of course, multiple CRC Matches might exist (even if only one is the “full valid file”.)

    Now, when you read about 1000 tests per minute… that is either not real-world… or a person who is a moron.

    Since this is a glorified batch program, it really only checks to see if an error occurs in extraction.

    Another error could be type mismatch or a corrupt archive:
    (These throw an error, but the software only checks if an error was thrown; not the type)

    You could also be testing against unrealistic scenarios:
    Included test files are extremely small. Heavy compression can also slow down decompression. The type of encryption also plays a role in speed of decompression.

    Could it be faster still though? Quite likely… but it is what it is.

  • By Ari, February 22, 2013 @ 10:21 pm

    how to use it? because it program still appear “The specified file (rar]) is not exists or
    you don’t have a right permissions!”
    What it means?

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