Hashcat enables highly-parallelized password cracking with the ability to crack multiple different passwords on multiple different devices at the same time and the ability to support a distributed hash-cracking system via overlays. Cracking is optimized with integrated performance tuning and temperature monitoring.
John the Ripper offers password cracking for a variety of different password types. It goes beyond OS passwords to include common web apps (like WordPress), compressed archives, document files (Microsoft Office files, PDFs and so on), and more.
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Brutus is one of the most popular remote online password-cracking tools. It claims to be the fastest and most flexible password cracking tool. This tool is free and is only available for Windows systems. It was released back in October 2000.
Brutus has not been updated for several years. However, its support for a wide variety of authentication protocols and ability to add custom modules make it a popular tool for online password cracking attacks.
Wfuzz is a web application password-cracking tool like Brutus that tries to crack passwords via a brute-force guessing attack. It can also be used to find hidden resources like directories, servlets and scripts. Wfuzz can also identify injection vulnerabilities within an application such as SQL injection, XSS injection and LDAP injection.
Medusa is an online password-cracking tool similar to THC Hydra. It claims to be a speedy parallel, modular and login brute-forcing tool. It supports HTTP, FTP, CVS, AFP, IMAP, MS SQL, MYSQL, NCP, NNTP, POP3, PostgreSQL, pcAnywhere, rlogin, SMB, rsh, SMTP, SNMP, SSH, SVN, VNC, VmAuthd and Telnet.
Medusa is a command-line tool, so some level of command-line knowledge is necessary to use it. Password-cracking speed depends on network connectivity. On a local system, it can test 2,000 passwords per minute.
RainbowCrack is a password cracking tool designed to work using rainbow tables. It is possible to generate custom rainbow tables or take advantage of preexisting ones downloaded from the internet. RainbowCrack offers free downloads of rainbow tables for the LANMAN, NTLM, MD5 and SHA1 password systems.
OphCrack is a free rainbow table-based password cracking tool for Windows. It is the most popular Windows password cracking tool but can also be used on Linux and Mac systems. It cracks LM and NTLM hashes. For cracking Windows XP, Vista and Windows 7, free rainbow tables are also available.
L0phtCrack is an alternative to OphCrack. It attempts to crack Windows passwords from hashes. For cracking passwords, it uses Windows workstations, network servers, primary domain controllers and Active Directory. It also uses dictionary and brute-force attacks for generating and guessing passwords. It was acquired by Symantec and discontinued in 2006. Later, L0pht developers again reacquired it and launched L0phtCrack in 2009.
Aircrack-ng is a Wi-Fi password-cracking tool that can crack WEP or WPA/WPA2 PSK passwords. It analyzes wireless encrypted packets and then tries to crack passwords via the dictionary attacks and the PTW, FMS and other cracking algorithms. It is available for Linux and Windows systems. A live CD of Aircrack is also available.
In this post, we have listed 10 password-cracking tools. These tools try to crack passwords with different password-cracking algorithms. Most of the password cracking tools are available for free. So, you should always try to have a strong password that is hard to crack. These are a few tips you can try while creating a password.
Password-cracking tools are designed to take the password hashes leaked during a data breach or stolen using an attack and extract the original passwords from them. They accomplish this by taking advantage of the use of weak passwords or by trying every potential password of a given length.
The thing here is, everything works and it generates 2 string password petty well. However, if length exceeds 2 or 3 strings. Well, it kind of moves at snail pace. Then I got an idea, if I could save the randomly generated password in the "b" list that I made and make sure that the passwords in that list are not repeated in the process then i think it will run significantly faster.
Password cracking is not an easy job. Think about the search space you have to go through as the length of the password grows. Your list of the possible characters contains 26 letters and 10 digits (by the way you can use string.digits and string.ascii_lowercase). So, for the first character in your password there are 36 options. The second has 36 options, the 3rd has 36 options and so on. Therefor, for a password of length n you will have 3^n options. As you can quickly see, this number is growing extremely rapidly even for small numbers.
Notice, however, depending on the the kind of hashes you will be attempting to crack (I am assuming you will be brute-forcing), there is no guarantee that your program will finish. Most (by that, I mean any practical/effective one) hashing algorithms operate under the notion of computational infeasibility. If you will be generating random strings to crack, notice that all a cracker needs to do is find a collision. For instance, consider a situation where 'cat' and 'dog' map to the same hash value and the real password is 'dog.' If your cracker finds 'cat' as a solution, this solution is just as viable. This is still a very hard problem, however, and also not guaranteed to finish.
The other alternative is a dictionary attack (since this is educational - this should be feasible). If you are doing a simple dictionary attack and the word is not in the dictionary, you will simply be out of luck. This is guaranteed to finish at the end of your dictionary, however. To implement this, it would be best to split your dictionary. If you have 4 threads and a dictionary of 1000 words, then each thread should get a different subset of the dictionary (each with 250 entries to work on). In practice, however, most protected passwords probably have some form of salt as well (just something to think about).
I wouldn't expect the OS to just let you keep trying different numbers until you hit one that works. There are other well known ways to recover from a lost password, using the OS installer or a bootable Linux image. Wouldn't they be quicker and easier?
With an external keyboard connected via USB, I can type and enter all the passwords I want, not locked out.
OS installer will not remove this type of password nor will bootable linux image.
Thanks.
JB
If you're trying to bruteforce the EFI password, good luck, those tend to be quite long, contain numbers, uppercase, lower case, and special characters (especially on Macbooks that have been "liberated" from educational institutions). The standard is about 30 characters. There are utilities to reset the EFI password. If you're trying to log into the Mac itself, there are boot disks that let you brute-force or reset the password.
Trying to brute-force a password in place is just dumb. Your little microprocessor is still going to be running numbers after the sun consumes the earth, its barely possible on a high-end x86 machine. Its much better to grab the encrypted passwords off the device and brute-force them on a machine you own (or using a cloud computing service).
Just did a little more research. Apparently the utilities that we use to reset EFI passwords aren't available to the public. Thats moronic, even by Apple standards. So...pray you have one with a PIN and not a 30 character alphanumeric password, I guess.
Before you assume this is some sort of criminal enterprise, my motivation is to correct a hole in The way Apple handles registration. Currently, when you buy a new Mac you are required to register it with an Apple ID. Apparently the Apple ID (email address/password) stays with the computer indefinitely even if the Admin password is changed. I have has several customers that In trying to upgrade to Mavericks 10.9 were prompted to enter an Apple ID that was not their own although the HD had been wiped previously. These were legit computers, one even refurb'd from Apple.
My current motivation is a little more personal. One of my best friends mother passed suddenly. The survivors found her laptop but it is now locked since they don't have her password. Normally Apple would unlock it with proof of purchase presented in store. Since the owner is deceased, Apple now says it would only accept a court order signed by a judge to unlock it.
Funny thing, I set an administrator password (0005) on another Mac, and ran the code and it opened up when it got to 0005. Trouble is, I had to physically hit as each number was created. So, mostly what it needs is code to generate .
And so, with a cup of tea steaming on my desk, my e-mail client closed, and some Arvo Prt playing through my headphone, I began my experiment. First I would need a list of passwords to crack. Where would I possibly find one?
Dan suggested that, in the interest of helping me get up to speed with password cracking, I start with one particular easy-to-use forum and that I begin with "unsalted" MD5-hashed passwords, which are straightforward to crack. And then he left me to my own devices. I picked a 15,000-password file called MD5.txt, downloaded it, and moved on to picking a password cracker.
Password cracking isn't done by trying to log in to, say, a bank's website millions of times; websites generally don't allow many wrong guesses, and the process would be unbearably slow even if it were possible. The cracks always take place offline after people obtain long lists of "hashed" passwords, often through hacking (but sometimes through legal means such as a security audit or when a business user forgets the password he used to encrypt an important document).
Hashing involves taking each user's password and running it through a one-way mathematical function, which generates a unique string of numbers and letters called the hash. Hashing makes it difficult for an attacker to move from hash back to password, and it therefore allows websites to safely (or "safely," in many cases) store passwords without simply keeping a plain list of them. When a user enters a password online in an attempt to log in to some service, the system hashes the password and compares it to the user's stored, pre-hashed password; if the two are an exact match, the user has entered the correct password. 0852c4b9a8
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