On the 4th Day of Christmas, Div0 gave to me ... Using Online Digest Databases, Hash Identification, Password Mutation Using JTR, and Custom Word List Generator (CeWL).
After identifying the type of hash algorithm, we can now try and crack the digest. One useful tool found on Kali Linux is findmyhash. findmyhash look up several online databases for a specific digest. Once it found a match, it will stop and return the corresponding text that can be used to derive the digest.
findmyhash <hash algorithm> -h <hash>findmyhash In Action
Original text: password
MD5: 5f4dcc3b5aa765d61d8327deb882cf99
SHA-1: 5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8
Do note that this process may take some time and may not yield any result (if the digest cannot be found on any online database findmyhash uses).
Shared by Tan Jun Hao.