This Rainbow cracking technology works on simple concept. Instead of computing the hashes for each password dynamically and comparing with the correct one during cracking, password hashes are computed in advance for all character sets. These hashes are then stored in datasets called rainbow tables.
So cracking involves just comparing the current password hash with the pre computed hashes within the rainbow tables and get the associated plain text password. Hence it takes very less time compared to the traditional method of brute force cracking. Setting up the rainbow table for various character sets is just one time activity and may take days or months based on the character set and speed of the machine. Once the rainbow tables are ready, you can feed the password hash to it and get your password cracked in seconds.
OnlineHashCrack is a powerful hash cracking and recovery online service for MD5 NTLM Wordpress Joomla SHA1 MySQL OSX WPA, Office Docs, Archives, PDF, iTunes and more! To extract the salt for the hashes. But + point is, that cracker need to build hash tables with each salt for cracking each hash. This makes it hard to crack multiple hashes at a. NTLMV2 hash crack bruteforce. NTLMV2 hash crack bruteforce. Gemgeorge Junior Member. Posts: 2 Threads: 1 Joined: Jan 2014 #1., 05:29 PM. Decrypt and crack your MD5, SHA1, SHA256, MySQL, and NTLM hashes for free online. We also support Bcrypt, SHA512, Wordpress and many more. Hashkiller - #1 Hash Cracking Forum. General support for questions in regards to the hash cracking software, such as: hashcat, mdxfind, john the ripper, hash manager and other. Cain And Abel can crack NTLM hashes with a dictonary attack, Brute-Force attack, Cryptanalysis attack and Rainbow tables. It uses CPU power and is only available for Windows.
Today I was stumbled across a hacking challenge website called tryhackme. Multiple challenges can be found and each of the challenges is written by the community or individual. Feel free to sign up yourself and take part the challenges.
Long story short, I will guide you on the challenge named crackthehash. This challenge is extremely easy if you are an experienced hacker/code cracker. The challenge consists of 9 tasks and I will explain it one by one.
Task 1-1: MD5 hash
Hash: 48bb6e862e54f2a795ffc4e541caed4d
Solution: This one is easy, there are two ways to crack this MD5 hash
Method 1: Online hash cracker
You can visit any hash cracker site to crack the hash instantly. For example, the crack station. Just paste the hash and crack it.
Method 2: Hashcat
This method is more flexible when compared to the online hash cracker. It provides a tons of hash mode. You can download hashcat (Window/Linux/MacOS) from this website. However, you need to know some command line for terminal/CMD as the prerequisite of using this tool. On the other hand, I highly recommend launching this tool in your host computer (not on your virtual machine). This is due to cracking the hash require a large amount of processing resource and GPU is the ideal choice when compared to CPU. Also, the virtual machine cannot access GPU resource.
For this walk-through, I’m going to use Window OS. After you have downloaded the hashcat, be sure to redirect to the path where you extract the hashcat (using the command: cd). Also, I going to use dictionary attack for this hash crack walk-through, you can download the famous wordlist (rockyou.txt). After that, I store the rockyou.txt into the ‘Dict’ directory (the directory is inside the hashcat folder).
Please create a ‘Hash’ directory to store all the hashes that going to be cracked soon. For this case, i saved my hash in ‘hash.txt’.
After that launch the hashcat using following command
- hashcat64.exe –> hashcat run in 64bit
- -D –> choosing the processor mode (1-CPU, 2-GPU 3-FPGA)
- -m –> Hash mode (0-MD5), please refer to hashcat mode
After a few second/minute, the result shows in the terminal.
Answer: easy
Task 1-2: SHA1 hash
Hash: CBFDAC6008F9CAB4083784CBD1874F76618D2A97
Solution: Similar to Task 1-1, but the mode is (-m 100) for hashcat
Answer: password123
Task 1-3: SHA256 hash
Hash: 1C8BFE8F801D79745C4631D09FFF36C82AA37FC4CCE4FC946683D7B336B63032
Unfortunately this product is no longer available. This product qualifies for VAT relief. See the following document for more detailed information on the Philips warranty. Please contact the local contact centre if you have additional questions. Warranty document. Webcam philips pcvc 680k (vesta pro).
Solution: Similar to Task 1-1, but the mode is (-m 1400) for hashcat
Answer: letmein
Task 1-4: bcrypt-blowfish hash
Hash: $2y$12$Dwt1BZj6pcyc3Dy1FWZ5ieeUznr71EeNkJkUlypTsgbX1H68wsRom
Solution: This one is little bit tricky which is this hash cannot be cracked using online tool. That is why hashcat came in, set the mode to -m 3200
Answer: bleh
Task 1-5: MD4 hash
Hash: 279412f945939ba78ce0758d3fd83daa
Solution: Similar to Task 1-1, but the mode is (-m 900) for hashcat
Answer: Eternity22
Task 2-1: SHA256 hash
Hash:
F09EDCB1FCEFC6DFB23DC3505A882655FF77375ED8AA2D1C13F640FCCC2D0C85
Solution: Similar to Task 1-1, but the mode is (-m 1400) for hashcat
Answer: paule
Task 2-2: NTLM hash
Hash: 1DFECA0C002AE40B8619ECF94819CC1B
Hash Crack Online
Solution: Similar to Task 1-1, but the mode is (-m 1000) for hashcat
Answer: n63umy8lkf4i
Task 2-3: SHA512crypt, $6$ hash
Hash:
$6$aReallyHardSalt$6WKUTqzq.UQQmrm0p/T7MPpMbGNnzXPMAXi4bJMl9be.cfi3/qxIf.hsGpS41BqMhSrHVXgMpdjS6xeKZAs02.
Solution: This hash cannot be cracked using online tool but can be cracked using hashcat by setting the mode -m 1800. (It take some time).
Answer: waka99
Task 2-4: SHA1 with salt hash
Hash: e5d8870e5bdd26602cab8dbe07a942c8669e56d6:tryhackme
Ntlm Password Cracker
Solution: This hash also cannot be cracked using online tool due to the present of salt ( tryhackme ). This only can be done by using hashcat with mode -m 110.
Answer: 481616481616
Identify hash
If you were not sure what kind of hash is presented on your monitor, you can try to detect the hash. It listed out all possible hashes.
Conclusion
Cracking hashes are fun and challenge. Be sure the share this post. and have a nice day 🙂
Reference and link
Ntlm Hash Lookup
- Crack this hash –> https://tryhackme.com/room/crackthehash
- hashcat –> https://hashcat.net
- hashcat (hash list) –> https://hashcat.net/wiki/doku.php?id=example_hashes
- Hash identifier –> https://md5hashing.net/hash_type_checker
- Online hash cracker –> https://crackstation.net/