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Cracking MD5Crypt Digests
linux-security-exploitation-password-cracking | Level: Easy | Total Lab Runs: 0 | Premium Lab |
The MD5 message-digest algorithm is a popular 128-bit hash function designed by Ronald Rivest in 1991. It was widely used to store hashed passwords and verify the integrity of files/binaries a few years back. MD5 was already declared cryptographically broken due to its susceptibility to hash collision attacks and ideally should no longer be used. Unfortunately, it still continues to be used by many legacy systems.
Crypt is a function to generate salted hashes for storing passwords securely and is widely supported by programming libraries. MD5 crypt is a crypt based on MD5 hash function.
An MD5 crypt output for a password is provided in digest.txt file. The password is either taken from the dictionary or generated using the password policy. The digest.txt file and the dictionary file "1000000-password-seclists.txt" are present in the user's home directory.
Objective: Recover the password
If the Dictionary attack fails then the password policy is:
- Password length is less than 6 characters i.e. 0 < length < 6
- Password can only contain characters from this character set: a-z, 0-9
The following activities are strictly prohibited on this website unless otherwise explicitly stated as allowed in the mission statement:
- Using automated scanners
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