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Blockchain hash - Proxerboss - 04-16-2019

I lost my email tied to the my blockchain account and when I log into my blockchain account, I am asked to confirm from the email, I have a password from my wallet and a decoded $ blockchain $ hash but not having access to mail, can i send my bitcoins in use my decrypted hash ? if yes, how?


RE: Blockchain hash - philsmd - 04-16-2019

maybe you should contact your email service provider and/or the blockchain support !?

There is also no such thing as decoded blockchain hash or decrypted hash. hashes can sometimes be cracked (but never decrypted), see https://www.techsolvency.com/passwords/dehashing-reversing-decrypting/

as far as I know you are dealing with a main and second password for your blockchain wallet. Do you know both passwords ?
My guess is that if you have the private key, you won't need any email access anymore (but I could of course be wrong). With private keys you should be able to send out your coins, without the private key corresponding to your wallet or addresses, you can't do anything.


RE: Blockchain hash - Proxerboss - 04-16-2019

(04-16-2019, 08:42 PM)philsmd Wrote: maybe you should contact your email service provider and/or the blockchain support !?

There is also no such thing as decoded blockchain hash or decrypted hash. hashes can sometimes be cracked (but never decrypted), see https://www.techsolvency.com/passwords/dehashing-reversing-decrypting/

as far as I know you are dealing with a main and second password for your blockchain wallet. Do you know both passwords ?
My guess is that if you have the private key, you won't need any email access anymore (but I could of course be wrong). With private keys you should be able to send out your coins, without the private key corresponding to your wallet or addresses, you can't do anything.

In order to get information from the hash, I need to have a password from it? I need to get the Xpub key and other information.

I'm need to get this info
{"tx_notes":{},"guid":" ... update: most likely very sensitive encrypted wallet data removed by philsmd due to privacy concerns (don't post wallets/hashes in public on this forum)}


RE: Blockchain hash - philsmd - 04-16-2019

I've modified your latest post, because you shouldn't post private/sensitive info here (the forum rules say do not post hashes in public).

If the the wallet has double_encryption enabled you probably need to crack both "hashes", first with -m 15200 and the second password with -m 18800.
That's my understanding of the steps involved... if you are unsure, you should probably create a new wallet and test it with two known passwords (test all the steps involved until you are familiar what needs to be done and what is going on).


RE: Blockchain hash - Proxerboss - 04-16-2019

How did you get this information? Give me instructions please


RE: Blockchain hash - philsmd - 04-16-2019

as explained here: https://hashcat.net/forum/thread-8288-post-44420.html#pid44420
the only way to obtain the second hash for -m 18800 (you of course need to crack the second hash for the second password too) is to patch the btcrecover file to use this re (regular expression): {.*"guid" instead of {\s*"guid" within this file: https://github.com/gurnec/btcrecover/blob/master/extract-scripts/extract-blockchain-second-hash.py

you do not need the intermediate data because it's encrypted anyway, the only important thing you need is the second password hash that can be extracted with extract-blockchain-second-hash.py

(as already explained within the other thread this is only needed because some wallets do not start with {"guid":... but with other data for instance {"tx_notes":{} ... )

if you run extract-blockchain-second-hash.py with your original (encrypted) wallet file and you provide the correct password it will give you the second password hash that you need to use together with -m 18800 in hashcat (Blockchain, My Wallet, Second Password (SHA256))


RE: Blockchain hash - Proxerboss - 04-16-2019

I know what I need, how do I extract information from the hash? I need to get the xpub key which is in my other hash.


RE: Blockchain hash - Proxerboss - 04-16-2019

How did you extract the data from the hash?
tx. xpub key, and other


RE: Blockchain hash - philsmd - 04-16-2019

crack the hashes you obtain with with extract-blockchain-second-hash.py -m 18800 = Blockchain, My Wallet, Second Password (SHA256)

if you have removed the double encryption (BOTH encryptions), you have the raw data, I guess.
That's why it is called double_encryption.


RE: Blockchain hash - Proxerboss - 04-16-2019

(04-16-2019, 11:12 PM)philsmd Wrote: crack the hashes you obtain with with extract-blockchain-second-hash.py -m 18800 = Blockchain, My Wallet, Second Password (SHA256)

if you have removed the double encryption (BOTH encryptions), you have the raw data, I guess.
That's why it is called double_encryption.

no, i write you in pm