• Brute Force Windows Password
• Windows Brute Force Password Cracker
• Brute Force Windows 7 Password
• Windows 7 Brute Force Password Cracker
• Brute Force Password Cracker For Windows

1. I have some code which can crack numeric rar file passwords. The code just increments the value of a variable (starting from 0) and I use that to check against the password to unrar using unrar command. But I want to generate strings for brute force attacks.
2. Hydra is a login cracker that supports many protocols to attack ( Cisco AAA, Cisco auth.

Brute Force Windows Password

What is password cracking?

Password cracking process involves recovering a password from storage locations or from data, transmitted by a computer system on network. Password cracking term refers to group of techniques used to get password from a data system.

Purpose and reason of password cracking includes gaining an unauthorized access to a computer system or it can be recovery of forgotten password. There might be another reason of using password cracking technique that is for testing password strength so hacker could not hack into system.

Password cracking is normally performed thought repetitive process in which computer applies different combinations of password till the exact match.

Crack Windows 10 Password Using Command Prompt Command Prompt is a built-in feature that comes with every version of Microsoft Windows Operating Systems. It provides the users with certain privileges and deep access to the OS that helps the users to change a few things to their suitable needs.

Brute Force Password Cracking:

Term brute force password cracking may also be referred as brute force attack. Brute force password cracking is respective process of guessing password, in this process software or tool creates a large number of password combinations. Basically it’s a trail-and-error technique used by software to obtain password information from system.

A brute force attack are normally used by hackers when there is no chance of taking advantage of encrypted system weakness or by security analysis experts to test an organization’s network security .This method of password cracking is very fast for short length passwords but for long length passwords dictionary attack technique is normally used.

Time taken by brute force password cracking software to crack password is normally depend upon speed of system and internet connection.

GPU Password Cracking:

GPU is graphics processing unit, sometimes also called visual processing unit. Before talking about GPU password cracking we must have some understanding about hashes. When user enter password the password information stored in form of computer hashes using the one-way hashing algorithm.

Windows Brute Force Password Cracker

In this password cracking technique using GPU software take a password guess and look through hashing algorithm and compare it or match it with the existing hashes till the exact match.

GPU can perform mathematical functions in parallel as GPU have hundreds of core that gives massive advantage in cracking password. GPU is much faster than CPU so that’s the reason of using GPU instead of CPU.

CUDA Password Cracking:

CUDA Compute Unified Device Architecture is a model for programming and a platform that perform computations in parallel, created by NVIDIA for graphic processing.

CUDA Password cracking includes cracking passwords using Graphics card which have GPU chip, GPU can perform mathematical functions in parallel so the speed of cracking password is faster than CPU.GPU have many 32bit chips on it that perform this operation very quickly.

We can easily access CUDA through libraries, directives and with the help of different programming languages that includes C, C++ and FORTRAN.

Password Cracking Tools

Given below is the list of Top10 Password cracking tools.

1. Cain and Abel : Top password cracking tool for Windows

Cain & Abel is one of the top cracking tool for password cracking and password recovery for Windows OS.

Cain & Abel can use techniques of Dictionary Attack, Brute-Force and Cryptanalysis attacks to crack encrypted passwords. So it only uses the weakness of system to crack password. GUI Interface of software is very simple and easy to use. But have availability limitation, tool only available for window based systems .Cain & Abel tool have many good features some of the features of tool are discussed below:

Features of Cain & Abel:

• Used for WEP (Wired Equivalent Privacy) cracking
• Have ability to record conversation over IP
• Cab be used as Network Password Sniffer
• Ability to resolve addresses IP to MAC.
• Can crack verity of hashes including LM and NT hashes, IOS and PIX hashes, RADIUS hashes, RDP passwords, and lots more than that.

Site for Download:

2. John the Ripper : Multi-platform, Powerful, Flexible password cracking tool

John the Ripper is a free multi or cross platform password cracking software. Its called multi platform as it combines different password cracking features into one package.

It’s primarily used to crack weak UNIX passwords but also available for Linux, Mac, and Windows. We can run this software against different password encryptions including many password hashes normally found in different UNIX versions. These hashes are DES, LM hash of Windows NT/2000/XP/2003, MD5, and AFS.

Features of John the Ripper

• Supportive with Brute force password cracking and dictionary attacks
• Multi platform
• Available free for use
• Pro version is also available with additional features

Site for Download:

3. Aircrack : Fast and effective WEP/WPA cracking tool

Aircrack is a combination different tools used for Wifi, WEP and WPA passwords cracking. With the help of these tools you can crack WEP/WPA passwords easily and effectively

Brute force, FMS attack, and dictionary attacks techniques can be used to crack WEP/WPA passwords. Basically it collects and analyzes encrypted packets then using its different tool crack password out of the packets. Although aircrack is available for Windows but there are different issues with this software if we use this in Windows environment, so it’s best when we use it in Linux environment.

Features of Aircrack

• Supportive with both Brute force and dictionary attacks cracking techniques
• Available for Windows and Linux
• Available in live CD

Site for Download:

4. THC Hydra : Multiple services supportive, Network authentication cracker

THC Hydra is a supper fast network password cracking tool. It uses network to crack remote systems passwords.

It can be used to crack passwords of different protocols including HTTPS, HTTP, FTP, SMTP, Cisco, CVS, SQL, SMTP etc. It will give you option that you may supply a dictionary file that contains list of possible passwords. It’s best when we use it in Linux environment.

Features of THC Hydra

• Fast cracking speed
• Available for Windows, Linux ,Solaris and OS X
• New modules can be added easily to enhance features
• Supportive with Brute force and dictionary attacks

Site for Download:

https://www.thc.org/thc-hydra/

5. RainbowCrack : New Innovation in Password Hash Cracker

RainbowCrack software uses rainbow tables to crack hashes, in other words we can say it uses process of a large-scale time-memory trade for effective and fast password cracking.

Large-scale-time-memory-trade-off is a process of computing all hashes and plain text using a selected hash algorithm. After calculations, obtained results are stored in the tables called rainbow table. Process of creating rainbow tables is very time consuming but when its done software works very fast.

Password cracking using rainbow table is faster than the normal brute force attack method. It’s available for Linux and Windows operating system.

Features of Rainbow Crack

• Support verity of Rainbow tables
• Runs on Windows (XP/Vista/7/8) and Linux operating systems (x86 and x86_64)
• Simple in use

Site for Download:

6. OphCrack : Tool for Windows password cracking

OphCrack used to crack Windows user passwords with the help of rainbow tables that are available in a bootable CD.

Ophcrack is completely free to download, Windows based password cracker that uses rainbow tables to crack Windows user passwords. It normally cracks LM and NTLM hashes. Software has simple GUI and can runs on different platforms.

Features of OphCrack

• Available for Windows but also available for Linux, Mac, Unix, and OS X
• Uses for LM hashes of Windows and NTLM hashes of Windows vista.
• Rainbow tables available free and easily for Windows
• To simplify the process of cracking Live CD is available

Site for Download:

http://ophcrack.sourceforge.net/

7. Brutus : A brute force attack cracker for remote systems

Brutus is the fastest, most flexible, and most popular software used to crack remote system passwords. It guess password through applying different permutations or by using a dictionary.

It can be used for different network protocols including HTTP, FTP, IMAP, NNTP and other types such as SMB, Telnet etc. It also gives you facility of creating your own authentication type. It also includes extra options of load and resume, so process can be paused when required and you can resume process when you want.

It is only available for windows operation systems. Tool has a limitation that it has not been updated since 2000.

Features of Brutus

• Available for Windows
• Can be used with different network protocols
• Tool have many good extra features
• Support SOCK proxy for all types of authentications
• Capability of error handling and recovery
• Authentication engine is multi stage

Site for Download:

8. L0phtCrack : Smart tool for Windows password recovery

Just like OphCrack tool L0phtCrack is also a Windows passwords recovery tool uses hashes to crack passwords, with extra features of Brute force and dictionary attacks.

It normally gains access to these hashes from directories, network servers, or domain controllers. It is capable of doing hash extraction from 32 & 64 bit Windows systems, multiprocessor algorithms, scheduling, and can also perform decoding and monitoring networks. Yet it is still the easiest to use password auditing and recovery software available.

Features of L0phtCrack

• Available for Windows XP, NT, 2000, Server 2003,and Server 2008
• Can work in both 32- and 64-bit environments
• Extra feature of schedule routine auditing on daily, weekly, monthly bases
• After run it provide complete Audit Summary in report page

Site for Download:

9. Pwdump : Password recovery tool for Windows

Pwdump is actually different Windows programs that are used to provide LM and NTML hashes of system user accounts.

Pwdump password cracker is capable of extracting LM, NTLM and LanMan hashes from the target in Windows, in case if Syskey is disabled, software has the ability to extract in this condition.

Software is update with extra feature of password histories display if history is available. Extracted data will be available in form that is compatible with L0phtcrack.

Recently software is updated to new version called Fgdump as Pwdump not work fine when any antivirus program is running.

Features of Pwdump

• Available for Windows XP, 2000
• Powerful extra feature are available in new version of Pwdump
• Ability to run multithreaded
• It can perform cachedump (Crashed credentials dump) and pstgdump (Protected storage dump)

Site for Download:

10. Medusa : Speedy network password cracking tool

Medusa is remote systems password cracking tool just like THC Hydra but its stability, and fast login ability prefer him over THC Hydra.

It is speedy brute force, parallel and modular tool. Software can perform Brute force attack against multiple users, hosts, and passwords. It supports many protocols including AFP, HTTP, CVS, IMAP, FTP, SSH, SQL, POP3, Telnet and VNC etc.

Medusa is pthread-based tool, this feature prevent unnecessarily duplicate of information. All modules available as an independent .mod file, so no modification is required to extend the list that supports services for brute forcing attack.

Features of Medusa

• Available for Windows, SunOS, BSD, and Mac OS X
• Capable of performing Thread based parallel testing
• Good feature of Flexible user input
• Due to parallel processing speed of cracking is very fast

Site for Download:

Passwords are the most commonly used method for user authentication. Passwords are so popular because the logic behind them makes sense to people and they’re relatively easy for developers to implement.

However, passwords can also introduce security vulnerabilities. Password crackers are designed to take credential data stolen in a data breach or other hack and extract passwords from it.

What is password cracking?

A well-designed password-based authentication system doesn’t store a user’s actual password. This would make it far too easy for a hacker or a malicious insider to gain access to all of the user accounts on the system.

Instead, authentication systems store a password hash, which is the result of sending the password — and a random value called a salt — through a hash function. Hash functions are designed to be one-way, meaning that it is very difficult to determine the input that produces a given output. Since hash functions are also deterministic (meaning that the same input produces the same output), comparing two password hashes (the stored one and the hash of the password provided by a user) is almost as good as comparing the real passwords.

Password cracking refers to the process of extracting passwords from the associated password hash. This can be accomplished in a few different ways:

• Dictionary attack: Most people use weak and common passwords. Taking a list of words and adding a few permutations — like substituting $ for s — enables a password cracker to learn a lot of passwords very quickly.
• Brute-force guessing attack: There are only so many potential passwords of a given length. While slow, a brute-force attack (trying all possible password combinations) guarantees that an attacker will crack the password eventually.
• Hybrid attack: A hybrid attack mixes these two techniques. It starts by checking to see if a password can be cracked using a dictionary attack, then moves on to a brute-force attack if it is unsuccessful.

Most password-cracking or password finder tools enable a hacker to perform any of these types of attacks. This post describes some of the most commonly used password-cracking tools.

1. Hashcat

Hashcat is one of the most popular and widely used password crackers in existence. It is available on every operating system and supports over 300 different types of hashes.

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.

Download Hashcat here.

2. John the Ripper

John the Ripper is a well-known free open-source password cracking tool for Linux, Unix and Mac OS X. A Windows version is also available.

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.

A pro version of the tool is also available, which offers better features and native packages for target operating systems. You can also download Openwall GNU/*/Linux that comes with John the Ripper.

Download John the Ripper here.

3. Brutus

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 supports a number of different authentication types, including:

• HTTP (basic authentication)
• HTTP (HTML Form/CGI)
• POP3
• FTP
• SMB
• Telnet
• IMAP
• NNTP
• NetBus
• Custom protocols

It is also capable of supporting multi-stage authentication protocols and can attack up to sixty different targets in parallel. It also offers the ability to pause, resume and import an attack.

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.

Get the Brutus password finder online here.

4. Wfuzz

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.

Key features of the Wfuzz password-cracking tool include:

• Injection at multiple points in multiple directories
• Output in colored HTML
• Post, headers and authentication data brute-forcing
• Proxy and SOCK support, multiple proxy support
• Multi-threading
• HTTP password brute-force via GET or POST requests
• Time delay between requests
• Cookie fuzzing

5. THC Hydra

THC Hydra is an online password-cracking tool that attempts to determine user credentials via brute-force password guessing attack. It is available for Windows, Linux, Free BSD, Solaris and OS X.

Brute Force Windows 7 Password

THC Hydra is extensible with the ability to easily install new modules. It also supports a number of network protocols, including Asterisk, AFP, Cisco AAA, Cisco auth, Cisco enable, CVS, Firebird, FTP, HTTP-FORM-GET, HTTP-FORM-POST, HTTP-GET, HTTP-HEAD, HTTP-PROXY, HTTPS-FORM-GET, HTTPS-FORM-POST, HTTPS-GET, HTTPS-HEAD, HTTP-Proxy, ICQ, IMAP, IRC, LDAP, MS-SQL, MYSQL, NCP, NNTP, Oracle Listener, Oracle SID, Oracle, PC-Anywhere, PCNFS, POP3, POSTGRES, RDP, Rexec, Rlogin, Rsh, SAP/R3, SIP, SMB, SMTP, SMTP Enum, SNMP, SOCKS5, SSH (v1 and v2), Subversion, Teamspeak (TS2), Telnet, VMware-Auth, VNC and XMPP.

/silhouette-cameo-software-v3.html. Download THC Hydra here.

If you are a developer, you can also contribute to the tool’s development.

6. Medusa

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.

Medusa also supports parallelized attacks. In addition to a wordlist of passwords to try, it is also possible to define a list of usernames or email addresses to test during an attack.

Read more about this here.

Download Medusa here.

7. RainbowCrack

All password-cracking is subject to a time-memory tradeoff. If an attacker has precomputed a table of password/hash pairs and stored them as a “rainbow table,” then the password-cracking process is simplified to a table lookup. This threat is why passwords are now salted: adding a unique, random value to every password before hashing it means that the number of rainbow tables required is much larger.

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.

Download rainbow tables here.

A few paid rainbow tables are also available, which you can buy from here.

This tool is available for both Windows and Linux systems.

Download RainbowCrack here.

8. OphCrack

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.

A live CD of OphCrack is also available to simplify the cracking. One can use the Live CD of OphCrack to crack Windows-based passwords. This tool is available for free.

Download OphCrack here.

Download free and premium rainbow tables for OphCrack here.

9. L0phtCrack

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.

L0phtCrack also comes with the ability to scan routine password security scans. One can set daily, weekly or monthly audits, and it will start scanning at the scheduled time.

Learn about L0phtCrack here.

10. Aircrack-ng

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.

Aircrack-ng tutorials are available here.

Download Aircrack-ng here.

How to create a password that’s hard to crack

Windows 7 Brute Force Password Cracker

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.

• The longer the password, the harder it is to crack: Password length is the most important factor. The complexity of a brute force password guessing attack grows exponentially with the length of the password. A random seven-character password can be cracked in minutes, while a ten-character one takes hundreds of years.
• Always use a combination of characters, numbers and special characters: Using a variety of characters also makes brute-force password-guessing more difficult, since it means that crackers need to try a wider variety of options for each character of the password. Incorporate numbers and special characters and not just at the end of the password or as a letter substitution (like @ for a).
• Variety in passwords: Credential stuffing attacks use bots to test if passwords stolen from one online account are also used for other accounts. A data breach at a tiny company could compromise a bank account if the same credentials are used. Use a long, random, and unique password for all online accounts.

What to avoid while selecting your password

Cybercriminals and password cracker developers know all of the “clever” tricks that people use to create their passwords. A few common password mistakes that should be avoided include:

1. Using a dictionary word: Dictionary attacks are designed to test every word in the dictionary (and common permutations) in seconds.
2. Using personal information: A pet’s name, relative’s name, birthplace, favorite sport and so on are all dictionary words. Even if they weren’t, tools exist to grab this information from social media and build a wordlist from it for an attack.
3. Using patterns: Passwords like 1111111, 12345678, qwerty and asdfgh are some of the most commonly used ones in existence. They’re also included in every password cracker’s wordlist.
4. Using character substitutions: Character substitutions like 4 for A and $ for S are well-known. Dictionary attacks test for these substitutions automatically.
5. Using numbers and special characters only at the end: Most people put their required numbers and special characters at the end of the password. These patterns are built into password crackers.
6. Using common passwords: Every year, companies like Splashdata publish lists of the most commonly used passwords. They create these lists by cracking breached passwords, just like an attacker would. Never use the passwords on these lists or anything like them.
7. Using anything but a random password: Passwords should be long, random, and unique. Use a password manager to securely generate and store passwords for online accounts.

Brute Force Password Cracker For Windows

Conclusion

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.

Password finders can be used for a variety of different purposes, not all of them bad. While they’re commonly used by cybercriminals, security teams can also use them to audit the strength of their users’ passwords and assess the risk of weak passwords to the organization.