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Comment by splitbrain | Hacker News Reader

I guess this wouldn't work with an encrypted wallet.dat which was introduced later than 2011.

Is there any tool to brute force/run password lists against wallet.dats? I have one around that I am adding coins to but just can't remember my own password.

https://en.bitcoin.it/wiki/Wallet_encryption

It would be pretty unfeasible to attempt a brute-force, due to the number of encryption rounds.

I usually use a similar pattern for my passwords. That way I could probably generate a few hundred combinations and run the list against the wallet. Would of cause be easier if there were a tool for doing that.

There is a service! http://www.walletrecoveryservices.com/

A++ Recommend Dave, good guy.

6 attempts a second on a high end i7 is as good as it gets. If you don't remember 90% of it then the coins are lost.

why thye fuck would you keep adding coins to it if you dont know the password?

More likely you have obtained someone elses wallet.dat file that they have encrypted and they do not know you have a copy of this wallet.dat so they are still using it, and you do not know their key but would quite like to access their coins.

Nope, it is just that I still have some hope in my abilities to guess the right password. I'm quite the optimist by nature ;)

there is optimistic and there is stupid.

send any new coins to a new address, sure you may remember the password but hedge against that possibility with another wallet, please. for my sake, for my sanity, do it for me.

Yeah the wallet in this post was created around version 0.3 or 0.4 of the Bitcoin client if I remember correctly.

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