I have a Blockchain wallet but am unable to decrypt my wallet and login. I created the wallet on OSX and am trying to login on a PC but it's not working.

  • What are my options to brute force this account, when I know most of the characters involved?

I'm a programmer, and can write the code, so knowing what URLs and data files I need to work with would be a help.

2 Answers 2


You can wrap a brute-force wrapper around any of the answers here. Just write some loops that iterate on all possible passwords, and call one of the functions in the linked question to try and decrypt you wallet.

This is what I used in a similar scenario (Javascript/node.js).

  • 1
    This was perfect... I was able to install Node.JS on OSX and cracked it... execution time was 5 seconds. Sep 1, 2013 at 13:06
  • @makerofthings7 terrific!
    – ripper234
    Sep 1, 2013 at 15:51
  • So does this mean someone internal at blockchain.info who has access to encrypted wallets could decrypt them by brute force in a small amount of time with limited computing power?
    – Fraggle
    Jun 15, 2014 at 12:19
  • @Fraggle only if the password was weak to begin with. In my case, my friend who lost his wallet pass had some ideas on the password, but at the end the brute-forcing effort we did didn't work out :(
    – ripper234
    Jun 22, 2014 at 10:21

The wallet format can be found here. There is also a tool that does this for you.

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