How Hackers Take Your Encrypted Passwords & Crack Them « Null Byte :: WonderHowTo

You may have asked yourself, "How do hackers take my password, if the website owner can't?" The answer is simple. When a website stores your login password for the site, it is run through a cryptographic hash function before it enters the database (if the website isn'tSony).So how are hackers getting these passwords?When a website is breached and has their database stolen, the password hashes will be in there. A hacker will analyze the hashes, and see whichhash typethey are, and then bruteforce them. Bruteforcing is when you systematically cycle through each letter in a letterset until it matches a password. A letter set can be all lower-case, symbols, or anything the hacker wants. So the hacker bruteforces until they find a hash that matches yours, resulting in "guessing" your password.In thisNull Byte, lets run through what it takes to hack a password using the commonMD5hashing algorithm. I'm going to show you how to do this on both Windows and Linux.Step1Cracking MD5 on WindowsOn Windows, we're going to need to download and installCain & Abel. Cain is part of the software suite, and is a AIO (All-In-One) Windows hacking tool. We will be using its bruteforce function to crack MD5 hashes.Hash a WordLet's hash the word "cowsay" using Miracle Salad'sMD5 hash generator. We get the following as a result:0f606505ce5a8e34d306f707067786efBruteforce with CainI'm going to show you in a vTutorial how to crack the hash of the word "cowsay". Follow closely!Please enable JavaScript to watch this video.See how quick and easy that was? Load the hash, click dictionary attack, and wait. This was on a single core processor in a Virtual Machine, so imagine what it would be like on a powerful computer with GPU's.Step2Cracking MD5 on LinuxOn Linux, cracking hashes is a bit different. We will be using JTR (John the Ripper). Linux is a bit faster at cracking hashes, as you will see in the video a bit later.InstallationFirst, download JTR fromhere.Extract withtar zxvf john-1.7.8.tar.gzNavigate to the john directoryInstall with./configure && make && sudo make installBruteforce with JohnI'm going to crack the hash of the word "cowsay" again, but this time with JTR. Commands will be listed below, if you miss any.Please enable JavaScript to watch this video.Commandsnano hash(inject hash into file and save)john --format=raw-md5 hashjohn --format=raw-md5 --show hashStep3Protect Yourself from Password CrackingCheck out my previousguideon keeping passwords strong and safe. The same rules apply here. Keep your passwords longer than 12 characters, and use symbols. Itgreatlyincreases the time it takes to crack.I hope you enjoyed this Null Byte. Jump inIRCif you need one-on-one advice!Want to start making money as a white hat hacker?Jump-start your hacking career with our2020 Premium Ethical Hacking Certification Training Bundlefrom the newNull Byte Shopand get over 60 hours of training from cybersecurity professionals.Buy Now (90% off) >Other worthwhile deals to check out:97% off The Ultimate 2021 White Hat Hacker Certification Bundle99% off The 2021 All-in-One Data Scientist Mega Bundle98% off The 2021 Premium Learn To Code Certification Bundle62% off MindMaster Mind Mapping Software: Perpetual LicenseImage viaWall Safe ExpertRelatedNews:8 Tips for Creating Strong, Unbreakable PasswordsHow To:Really Protect Your Encrypted iPhone Backups in iOS 11 from Thieves & HackersHack Like a Pro:How to Grab & Crack Encrypted Windows PasswordsAdvice from a Real Hacker:How to Create Stronger PasswordsHacking Windows 10:How to Steal & Decrypt Passwords Stored in Chrome & Firefox RemotelyHack Like a Pro:How to Remotely Grab Encrypted Passwords from a Compromised ComputerHow To:Creating Unique and Safe Passwords, Part 1 Using WordlistsNews:Flawed Laptop Fingerprint Readers Make Your Windows Password Vulnerable to HackersHow To:Use Wordlister to Create Custom Password Combinations for CrackingHack Like a Pro:How to Crack Passwords, Part 1 (Principles & Technologies)How to Hack Wi-Fi:Cracking WPA2-PSK Passwords Using Aircrack-NgHow To:Crack WPA & WPA2 Wi-Fi Passwords with PyritHow To:Crack Shadow Hashes After Getting Root on a Linux SystemHow to Hack Wi-Fi:Hunting Down & Cracking WEP NetworksHack Like a Pro:Cryptography Basics for the Aspiring HackerHow To:Encrypt Your Notes, Photos & Archives with EncryptPadTypoGuy Explaining Anonymity:A Hackers MindsetHow To:Hack MD5 passwordsHack Like a Pro:Metasploit for the Aspiring Hacker, Part 8 (Setting Up a Fake SMB Server to Capture Domain Passwords)How To:Crack Wi-Fi Passwords—For Beginners!Hack Like a Pro:How to Crack User Passwords in a Linux SystemHack Like a Pro:How to Crack Passwords, Part 2 (Cracking Strategy)Mastering Security, Part 1:How to Manage and Create Strong PasswordsHow To:Recover WinRAR and Zip PasswordsHow To:Hack Mac OS X Lion PasswordsSecure Your Computer, Part 3:Encrypt Your HDD/SSD to Prevent Data TheftHow To:Encrypt Your Sensitive Files Using TrueCryptNews:Advanced Cracking Techniques, Part 1: Custom DictionariesRainbow Tables:How to Create & Use Them to Crack PasswordsNews:Advanced Cracking Techniques, Part 2: Intelligent BruteforcingHow To:Defend from Keyloggers in Firefox with Keystroke EncryptionHow To:Carve Saved Passwords Using CainHow To:GPU Accelerate Cracking Passwords with HashcatGoodnight Byte:Coding a Web-Based Password Cracker in PythonHow To:How Hackers Steal Your Internet & How to Defend Against ItHow To:Safely Log In to Your SSH Account Without a PasswordHow To:Bypass Windows and Linux PasswordsHow To:Hack Wireless Router Passwords & Networks Using HydraHow To:Create an SSH Tunnel Server and Client in LinuxHow To:Encrypt And Decrypt Text In Python