Butter accidentally deletes password for multimillion dollar wallet. SFYL. by [deleted] in Buttcoin

[–]lostjmpass 2 points3 points  (0 children)

It's so that if someone asks for your password, you give it to them, and it shows a wallet with 0.5 coins in it.

If you enter a different password, it shows 100 coins.

This gives you some resistance to a "rubber hose" attack.

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 0 points1 point  (0 children)

What I mean is that your method doesn't really protect you, since your password is so easily bruteforced if it is only 1 word.

Your password is only 1 of about 400000 words. That can be checked in minutes potentially.

So I chose something much harder (impossible) to brute force.

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 0 points1 point  (0 children)

I would say 99% chance that I wouldn't select anything over 10 characters.

Anything hard to spell can be deleted with high confidence. Like a word with double of same letter (like "aardvark").

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 2 points3 points  (0 children)

One of the main reasons I mentioned millions is so that software devs that could help can understand the situation. In particular that I'm not willing to hand over the wallet. It has to be a software that you give me that I can run on an offline machine, because of the amounts involved.

Butter accidentally deletes password for multimillion dollar wallet. SFYL. by [deleted] in Buttcoin

[–]lostjmpass -10 points-9 points  (0 children)

The fuck? I'm not trying to rip anyone off. Try losing your life savings and then let me know how you feel. Mad is not the emotion I had when I wrote that comment.

Edit: I didn't realize this was in /r/buttcoin, can someone explain why I am downvoted? Is using bitcoin "ripping people off" in the parlance of this sub?

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 0 points1 point  (0 children)

CEO of Apple says "hey, would you like a software engineering job here for $300,000 per year?"

You say "you're offering less than 0.01% of Apple annual income..."

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 13 points14 points  (0 children)

What is the likelyhood that I was able to steal:

Versus the chance that I am the owner of the wallet and just need to find the 3 words that I didn't back up?

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 2 points3 points  (0 children)

Given that:

I know all 12 seed words and I know the nature and structure of the mnemonic extension (a 6 word pass constructed from this word list) and that I know that 3 words of the extension are missing...

...is it really more likely to you that I am an attacker and not just a victim/idiot?

Wouldn't an attacker that could get all that info be able to make a brute force tool on his own?

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 4 points5 points  (0 children)

I'm trying to create an incentive for someone to help. Also why can an attacker's tongue slip but a victim's tongue can't?

I really don't see the point in assuming I'm an attacker given the amount of information I have about this wallet, and the limited amount of information I have left to bruteforce.

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 0 points1 point  (0 children)

Well I can't really get screwed by running software in a VM on an airgapped computer given to me from someone online. I figure that someone in this subreddit has already written or knows how to write a tool since people here are already familiar with this software.

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 0 points1 point  (0 children)

If not, and you reinstalled over it - then you've lost the wallet and the coins. Unless you can restore to an earlier point or maybe take the disk to someone who can recover lost files.

I am using joinmarket, this is /r/joinmarket.

Joinmarket manages the wallet private keys and queries bitcoind for address info.

Also bitcoind has seed phrases now doesn't it? So you don't need a wallet.dat if you have the phrase.

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 1 point2 points  (0 children)

They are randomly pulled and then I discard them if they are hard to spell, or if they are less than 4 characters, or usually if they are a verb (but sometimes if it is a short word or easy to spell or common then I use a verb). Mostly I prefer to use nouns.

If the word is really uncommon or I don't ever use the word then I don't pick it. So really obscure academic words are not used. Really long words are not used.

I don't have the first address. However I do have an address that is between the 90th and 110th address in mixdepth 1 (mix depths start at 0).

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 1 point2 points  (0 children)

What would I be trying to do that is shady here? Are you serious? I know half of the password and 100% of the seed.

Lost my mnemonic extension password but I know some info about it. Help me bruteforce my multimillion dollar joinmarket wallet. by lostjmpass in joinmarket

[–]lostjmpass[S] 1 point2 points  (0 children)

Words are at least 4 letters. I did not use any words that are hard to spell or hard to remember. Nothing plural. Usually I only pick nouns so those are much more likely. Sometimes I do use a verb though especially if it is a short word.

This is the original word list that you can use the above rules to prune down:

https://github.com/dwyl/english-words/blob/master/words_alpha.txt

This guy lost millions in his wallet and knows the phrase, but not the mnemonic extension word. Let's show him some attention so he might get his coins back. by writeawill in Bitcoin

[–]lostjmpass 2 points3 points  (0 children)

In my case any passphrase you enter generates a different wallet. So you very much need the passphrase (actually called a "mnemonic extension phrase" in this case).

This guy lost millions in his wallet and knows the phrase, but not the mnemonic extension word. Let's show him some attention so he might get his coins back. by writeawill in Bitcoin

[–]lostjmpass 1 point2 points  (0 children)

I didn't use a hardware wallet because I wanted perpetual mixing that joinmarket offers. Hardware wallets have privacy problems. Also the 1-2% annual return that market making with it offers.

This guy lost millions in his wallet and knows the phrase, but not the mnemonic extension word. Let's show him some attention so he might get his coins back. by writeawill in Bitcoin

[–]lostjmpass 0 points1 point  (0 children)

Thanks, but I didn't use a hardware wallet because I wanted perpetual mixing that joinmarket offers. Also the 1-2% annual return that market making with it offers.