Quote from: ekiro on December 07, 2017, 12:37:03 AM

I have a wallet holding 23BTC but I can't remember my password. I know all the characters I might of used in it, but I can't remember how I concatenated them. How would I go about brute forcing it?

I thought about using https://walletrecoveryservices.com/ but am not comfortable giving them my wallet file and the 20% fee seems a little high at todays bitcoin prices.

Also if I posted this in the wrong section please move it to the correct sub forum.

I assume you have the encrypted wallet.dat and you know every characters
If you computer may be able to check 10 phrases/sec .

Password length : permutations
1 : 1
2 : 2
3 : 6
4 : 24
5 : 120
6 : 720
7 : 5040
8 : 40320
9 : 362880
10 : 3628800

So with a password length of 10 and if you are unlucky(checking every permutations) it will take a little over 4 days.
I'll definitely use https://walletrecoveryservices.com/ if you password length is 11 or greater.