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SHA-256 is a hashing function similar to that of SHA-1 or the MD5 algorithms. The SHA-256 algorithm generates a fixed size 256-bit (32-byte) hash. Hashing is a one way function – it cannot be decrypted back. However it can be cracked by simply brute force or comparing hashes of known strings to the hash.

Hashes.com is a hash lookup service. This allows you to input an MD5, SHA-1, Vbulletin, Invision Power Board, MyBB, Bcrypt, Wordpress, SHA-256, SHA-512, MYSQL5 etc hash and search for its corresponding plaintext ('found') in our database of already-cracked hashes. It's like having your own massive hash-cracking cluster - but with immediate results!

Enter your MD5 hash and it will give you the plain text. If it's not found in my database, I will add it in line for cracking. It usually takes about three or four days and you can check back then. In addidtion to MD5, MySQL, MySQL5, MSSQL, Sha1, Sha256, Sha512, NTLM, and Des hashes are also supported.The hash will be recognized automatically.
In this video, we will cover how to use Hashcat to crack Linux hashes. Hashcat: Timestamps: 0:06 - Introduction 0:45 - Reviewing.
As you can see below the file crack.txt which has the hashes of the password. 2) Extracting password hash dumps from Windows Pwdump is an amazing hacking tool that can help you get the LM and NTLM secret password hashes of client accounts from the Security Account Manager (SAM) database.

Below is an example hash, this is what a SHA-256 hash of the string password Macbooster 7 activation code. looks like. Identification of these hash types is a matter of picking the length and then starting with the most common forms of these hashes.

5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8

Go ahead and test our free password recovery of a SHA-256 hash using a password dictionary and brute force matching of the resulting hash.

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Background on SHA-256 Hashes

SHA-2 is a family of hashes including the popular SHA-256 and SHA-512 functions. These are generated using a similar technique however they are stronger mathematically, making brute force attacks against them more difficult. Even so, there are better encryption algorithms that can be used for modern web applications. A popular and secure method is the bcrypt function.

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Cracking SHA-256 Hashes

Attacking (often referred to as cracking) SHA-256 hashes is performed using the same technique as any one-way hashing function. Computing possible matches of the original string as fast as possible to find a matching hash.

See the following chart to get an idea of the weakness in standard hashing algorithms for password storage. These show brute force attempts against a single hash. cudaHashcat is running on an NVIDIA 560 GTX GPU that is a few years old now, so consider these on the low end of what is capable.

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Note the difference between hashcat and cudaHashcat against the same SHA-1 hash. You are reading that correctly MD5 hashes being brute forced at 1.8 billion per second.

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