How to identify and crack a Redmine hash | Hash Identifier

Q: Is a Redmine hash reversible?

No. Redmine is a one-way hash; you cannot reverse it. You can only guess inputs and compare, which is what hashcat and John do.

Q: What is the hashcat mode for Redmine?

Use `-m 7600` to tell hashcat to treat the input as Redmine.

Q: How long does it take to crack Redmine?

Redmine is fast to compute, so weak passwords often fall in seconds to minutes on a GPU; strong, long passwords remain infeasible.

Redmine is a application hash type. It is fast and typically unsalted, which makes weak passwords recoverable quickly on consumer GPU hardware. This page shows how to recognise it and the exact commands to attack it.

All identification runs locally in WebAssembly. The commands below write the hash to a local file on your machine — nothing is sent to this site.

Identifying the hash

The hash identifier on the home page detects Redmine entirely in your browser — your hash is never uploaded. A typical example looks like this:

4a1d4dc1c1b9c0e6e0b7e3f3d2a1b0c9d8e7f6a5:e6f7a8b9c0d1e2f30415263748596a7b

Cracking Redmine with hashcat

Save the hash to a file and run hashcat in mode -m 7600. Start with a wordlist such as rockyou.txt:

echo '4a1d4dc1c1b9c0e6e0b7e3f3d2a1b0c9d8e7f6a5:e6f7a8b9c0d1e2f30415263748596a7b' > hash.txt && hashcat -m 7600 hash.txt /usr/share/wordlists/rockyou.txt

Add a rule set to mutate dictionary words (capitalisation, leetspeak, appended digits) and dramatically widen coverage:

echo '4a1d4dc1c1b9c0e6e0b7e3f3d2a1b0c9d8e7f6a5:e6f7a8b9c0d1e2f30415263748596a7b' > hash.txt && hashcat -m 7600 hash.txt /usr/share/wordlists/rockyou.txt -r /usr/share/hashcat/rules/best64.rule