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Ophcrack is a free open-source (GPL licensed) program that cracks Windows log-in passwords by using LM hashes through rainbow tables.The program includes the ability to import the hashes from a variety of formats, including dumping directly from the SAM files of Windows, and can be run via the command line or using the program’s GUI (Graphical user interface).
Crack v5.0a [6] released in 2000 did not introduce any new features, but instead concentrated on improving the code and introducing more flexibility, such as the ability to integrate other crypt() variants such as those needed to attack the MD5 password hashes used on more modern Unix, Linux and Windows NT [7] systems.
The purpose of password cracking might be to help a user recover a forgotten password (due to the fact that installing an entirely new password would involve System Administration privileges), to gain unauthorized access to a system, or to act as a preventive measure whereby system administrators check for easily crackable passwords. On a file ...
Gathering packets may be done through tools such as WireShark or Prismdump and cracking may be done through tools such as WEPCrack, AirSnort, AirCrack, and WEPLab. When gathering packets, often a great amount of them are required to perform cracking. Depending on the attack used, 5-16 million frames may be required.
Hydra (or THC Hydra) is a parallelized network login cracker built in various operating systems like Kali Linux, Parrot and other major penetration testing environments. [2] Hydra works by using different approaches to perform brute-force attacks in order to guess the right username and password combination.
One of the modes John can use is the dictionary attack. [6] It takes text string samples (usually from a file, called a wordlist, containing words found in a dictionary or real passwords cracked before), encrypting it in the same format as the password being examined (including both the encryption algorithm and key), and comparing the output to the encrypted string.
Modern GPUs are well-suited to the repetitive tasks associated with hardware-based password cracking. As commercial successors of governmental ASIC solutions have become available, also known as custom hardware attacks , two emerging technologies have proven their capability in the brute-force attack of certain ciphers.
dSniff is a set of password sniffing and network traffic analysis tools written by security researcher and startup founder Dug Song to parse different application protocols and extract relevant information. dsniff, filesnarf, mailsnarf, msgsnarf, urlsnarf, and webspy passively monitor a network for interesting data (passwords, e-mail, files, etc.). arpspoof, dnsspoof, and macof facilitate the ...