xylevy / ninja

Python scripts to generate BTC addresses and private keys using a phrase list and check their balance and activity

Interesting Bitcoin brain-wallets rabbit hole

Creating btc addresses using some phrases using wordlists from SecLists brought up some fascinating results. This led me to the brain-wallet rabbit hole, albeit a little late. Brain-wallet is a concept of generating a bitcoin address using a memorized pass phrase.

PassPhrase -> Private Key & BTC address

It is very unsafe since often times than not humans are not good at randomness hence passphrases end up being vulnerable to brute-force attacks.
An attacker can also generate a lot of brainwallets and their respective private keys with a lot of phrases.They then monitor the blockchain (think a bot run on a VPS that watches the addresses) and if any of the addresses receive any funds, the bot quickly swoops in and transfers the funds.

Scripts

sha_btc.py - Generates btc addresses using a simple phrase list and saves them
check_addresses.py - Checks if saved addresses are used or if they have any balance (highly unlikely)

Requires:

• Selenium webdriver
• Requests

This is interesting since you can find some used addresses(maybe created for research, by actual people to store their fortunes ¯\(ツ)/¯ or for other purposes) using a simple word list.

For more on the topic check out:

-DEF CON 23 - Ryan Castellucci - Cracking CryptoCurrency Brainwallets
-https://en.bitcoin.it/wiki/Brainwallet for more info on brain wallets
-Brainflayer which is a Proof-of-Concept brainwallet cracking tool

ninja's Issues

missing WIF CHARACTERS

Hello sir
Sorry to bother I was just going through your repo to see if you could help me. The problem I have is with my wallet private key characters, I mistakenly damaged the piece of paper I wrote it on, so I was wondering if you could help me write a program that will brute Force all the 10 missing characters very fast and find the correct characters and in return I will make a donation of 2 BTC to you if I find the correct keys