GoBozoCrack is a depressingly effective and fast MD5 password hash cracker with almost zero CPU/GPU load written in Go. Instead of rainbow tables, dictionaries, or brute force, GoBozoCrack simply finds the plaintext password. Specifically, it googles the MD5 hash and hopes the plaintext appears somewhere on the first page of results.

• Free software: MIT license

It works way better than it ever should. Go ahead and try.

Basic usage:

$ go run main.go -file example.txt

Or:

$ go run main.go -single fcf1eed8596699624167416a1e7e122e

The input file is expected to contain a single hash per line. GoBozoCrack automatically picks up strings that look like MD5 hashes.

Example with output:

$ go run main.go -file -f example.txt

fcf1eed8596699624167416a1e7e122e:octopus

bed128365216c019988915ed3add75fb:passw0rd

d0763edaa9d9bd2a9516280e9044d885:monkey

dfd8c10c1b9b58c8bf102225ae3be9eb:12081977

ede6b50e7b5826fe48fc1f0fe772c48f:1q2w3e4r5t6y

$ go run main.go -single fcf1eed8596699624167416a1e7e122e

fcf1eed8596699624167416a1e7e122e:octopus

To show just how bad an idea it is to use plain MD5 as a password hashing mechanism. Honestly, if the passwords can be cracked with this software, there are no excuses.

BozoCrack was originally written by Juuso Salonen (http://twitter.com/juusosalonen).

PyBozoCrack and GoBozoCrack were rewritten in Python and Go by Henrique Pereira (http://twitter.com/ikkebr).