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Hacking archives, password selection, programs

The most popular archivers in the Windows environment are arj, rar and zip, the latter two being the most used. What could be the reasons for using archivers? In general, then, the main two. The first is the desire to reduce the amount of data that we are going to store or send over the network for a long time. Many more use archivers to store encrypted data. To say so, to hide valuable information from prying eyes. Immediately outlined two problems. First, the data is encrypted with a password, and you can forget the password. What often happens. And even being the creator of the archive, you still can not open it without a password. The second, the person who created the encrypted archive, almost always believes in the stability of the system, otherwise he would not have created it. So let's find out how reliable the system is.

In archives such as rar and winrar, a very strong encryption algorithm is used, so only one of the methods listed above can be applied to them.

Advanced RAR Password Recovery (ARPR) . Download the demo version or buy the full one here . What can prog? All within reason. The program has a beautiful design, supports English and Russian interface. All compression methods available in RAR are supported, including self-extracting archives (SFX). You can set your own character set for brute force (Russian character set is also supported), you can iterate through the dictionary, and you can also set a mask for brute force. The process of finding a password can be stopped at any second, and then continue from the same place even after exiting the program. What are the cons? Minus in general one, a program paid, but if to pick out on the Internet, it is possible to find and free of charge.

cRARk 2.3 is one of the most powerful and fast hackers of rar-passwords (for archives of version not lower than 2.0) from Pavel Semyanov. The program works great under DOS'om, and under Win32. Supports solid-archives, SFX-archives, long file names, built-in Password Cracking Library (PCL) with multilingual dictionaries and the hacking functions of a partially-known password. The program is well documented (in Russian) and is supplied with an "exemplary" password-protected archive with a ready cracked configuration. In the latest versions of cRARk, support for "stored" files (-m0) has been added, 2-fold optimization in speed on P-Pro / P-II processors has been carried out (auto-detection of the processor type is also provided). In addition, the cRARc executable file for Linux (ELF) has appeared. Download the program here .

RAR Password Cracker is a console utility for retrieving lost passwords from RAR 2.x archives. Selects by searching all possible combinations of characters and / or using passwords from the list. Able to maintain the current state of work, which increases the reliability and ease of use, as well as with skillful configuration allows you to parallelize the process of iteration. Can write to the file probable passwords. Works on OS / 2. The program is available here .

RARBreak II is another password cracker for RAR archives (version 2.0 or higher) by Alexander A. Bouroff. Works under DOS4GW. To crack a password using RARBreak, you will need to find an unpacked file that is identical to one of the files contained in the password-protected archive. Russian documentation and test case available

RARCrack 1.02b - Rar-archive password cracker - A relatively new program for cracking passwords in RAR archives by Vlad Vasyagin. For its work, a standard UnRar.exe unpacker is required. There are a couple of command line options (though not all of them work yet). Included with the utility comes a test password-protected archive, several character dictionaries and a dock in Russian.

RAR Password Search 1.02 is not yet outdated German program for password cracking in RAR archives by DRK-Soft, which requires the standard UnRar.exe unpacker. In addition to searching for the characters specified in the configuration, it allows you to select a password using a dictionary (although in reality everything happens the other way around - first there is a check of matches in the dictionary, and then brute force). You can stop hacking at any second (by pressing ESC) and save the current brute-force state by answering the question with the letter "J" (in the sense of "Ja" - a program from non-German). And when you want, you can run the program again with the recovery option "from the middle". Included with the utility comes a ready configuration file, a small dictionary and documentation in German.

From the above, it is obvious that finding the password for the rar archive is not easy, and if a person tried to invent a password, the task can be very difficult.

Advanced ZIP Password Recovery (AZPR) is a program for recovering forgotten passwords to archives created by ZIP and WinZIP archivers. The program allows you to select passwords to archives by brute force or dictionary attack. AZPR has the world's fastest brute force module, optimized for Pentium III and Pentium IV processors. The program has English and Russian interface, supports archives containing any number of files. Supports all compression methods available in ZIP. In all other respects, it is no different from a similar program for rar.

FZC (Fast Zip Password Cracker) is a fairly new, evolving Zip password cracker by Fernando Papa Budzyn. There is version 1.05 under DOS with a couple of bugs, released more than a year ago, fresh not tested, but it seems like a buggy DOS version 1.05b, plus a semi-remapped Windows version of the cracker - FZC 1.06 not so long ago. The speed of operation is generally quite good (about 38,000 passwords per second on the P166MMX). It provides: search for a password using a simple brute force, dictionary attack, recovery of a partially known password; function of performance testing, the ability to work with broken, cut, multi-volume archives. The possibility of separating the process of hacking into "parts", performing it on several computers. Multiple hacking modes optimized for different CPU / Cache / MB sets. The ability to stop / resume the process of hacking at any time. In general, many options! The program and source can be downloaded from the site .

FCrackZip is a fairly new, freely developed console password cracker of Zip archives (and, more recently, password-protected PPM images), originally written for Linux. According to the author, Marc Lehmann, is a very smart program in its class, which is confirmed by tests (about 400,000 passwords per second (4000 if one file) on P166-MMX). Provides many useful options, supported by hacking multiple archives simultaneously. Unfortunately, the latest version of this program available on the website under DOS has an earlier version than under xNIX, namely 0.0.4. This version is not so smart, so we are waiting, sir. Starting from version 0.2, the program allows you to find out the password of PPM images by brute force By the way, as far as I know, this is still the only program that allows you to "break" the encrypted images of Pegasus-format.

PKZCheck (PKZIP Password Checker) is a small zip password checker by Mercury Soft Technology Ltd. Why not a cracker? Yes, because this utility allows only to check whether a password from a text dictionary file is suitable for the archive being tested, in which it is possible to write down the supposed passwords. If one of the words matches, then the program reports a suitable password, and if not, it does not, respectively.

UZPC (Ultra Zip Password Cracker) is a cool compact hacker of Zip-passwords from Ivan Golubev with a graphical interface and an excellent speed optimized for modern processors (brute force - about 1,500,000 passwords per minute per K-6-300 MHz system when working with an archive containing more three files). Password search by simple search (with the possibility of limiting the number and set of characters), dictionary attack (with a choice of the test password modification method), mixed attack (dictionary plus brute force). The ability to unpack all password-protected archive files if you have one of the files from this archive (known plaintext attack) on the disk. The possibility of stopping / resuming the hacking process at any time (there are also auto save state options). Support for multiple languages ​​in the program interface, adjusting the work priority, minimizing the System Tray icon.

VZPRP (Vizual Zip Password Recovery Processor) is a good GUI-zalomalka Zip-passwords by ForthTech Software. It has a good search speed, which reaches 1200000 passwords per second on PII 366. The program features are:
- support for finding passwords in SFX archives (EXE), in the headers of the archives (that is, the entire archive is not needed - you can cut off most of it in the hacked copy so that no one will guess ...);
- the ability to work in the background, adjusting the priority and minimizing the program window in the tray;
- the ability to check passwords manually;
- the possibility of simultaneous hacking on multiple computers;
- heuristic analysis, reducing the time to search for a password in 50-70% of files;
- the ability to stop searching and continuing the search (even after exiting the program) from the last "position";
- a good graphical interface, functions for viewing statistics, work speed, etc .;
- the ability to specify the user length of the password, character set (including non-English), etc .;
- almost the same high search speed with any number of files in the archive (for the majority of hackers, the speed decreases dramatically when working with archives containing less than three files);
- A variety of attack methods (simple brute force, by dictionary, by template, by brute-force writing, password recovery if you have one of the archive files on the disk);

The program includes: detailed HTML documentation, a test password-protected archive, a dictionary of 450,000 English words, ready-made character sets.

In the latest version, the speed of a simple brute force has been increased by 10%, the ability to install a higher processor priority to the program has been added, the user interface has been improved, bugs have been fixed.

Advanced ARJ Password Recovery allows you to access password-protected archive without a password. In her work she uses two different methods, which allows to get pretty good results. Of course, Advanced ARJ Password Recovery could have been faster, but still this program remains the best utility for selecting passwords for arj archives today.

And lastly, I will talk about Advanced Archive Password Recovery (ARCHPR) . This is a program for recovering forgotten passwords to ZIP archives (PKZIP, WinZIP), ARJ / WinARJ, RAR / WinRAR and ACE / WinACE. The program combines all the features of Advanced ZIP Password Recovery, Advanced ARJ Password Recovery, Advanced ACE Password Recovery and Advanced RAR Password Recovery. In addition to these features, ARCHPR may guarantee the recovery of the contents of WinZIP archives if they contain more than five files. The program has the same characteristics as all the programs developed by ElcomSoft Co.

What conclusions suggest themselves? Modern archives have high cryptographic strength, but it does not give 100% guarantees if you use weak passwords. Use long, not common passwords. And most importantly, do not forget them, otherwise nobody will help you. Suppose your password consists of 5 characters and each character can be an English uppercase or lowercase letter or a number. Then each character can be any one of 64. Therefore, the number of all possible combinations is 64 to the power of 5, that is, 1073741824. The FCrackZip program has a search speed of 400,000 passwords per second. This means that all the passwords from our example can be searched with its help in approximately 45 minutes. And if the password consists of 6 characters, then all combinations can be sorted out in 47 hours. It is terrible to even think how long it will take to bust a password of 15 characters And if this further increases the number of possible values, for example, to 255, then it is generally difficult to imagine a figure expressing the number of years needed for the search. Choose passwords as long as possible and as logical as possible. And do not forget them!

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