#!/usr/bin/ruby
require 'base64'
require 'digest/sha2'
require 'open3'
require 'openssl'

# Put your best guess at your passphrase here
passphrase = 'guili'

# The full path to your electrum.dat or default_wallet
wallet_file = '/home/lapa/.electrum/wallets/default_wallet'

# Where to find Electrum.  Am using Ubuntu
$electrum = '/usr/bin/electrum'


def test(phrase)
  $cipher.reset
  $cipher.key = Digest::SHA256.digest(Digest::SHA256.digest(phrase))
  $cipher.update $seed
  $cipher.final
  puts phrase
  i,o,t = Open3.popen2e($electrum, "-o", "getseed")
  i.puts(phrase)
  i.close
  if t.value.success?
    puts "Found it! #{phrase}"
    exit
  end
rescue OpenSSL::Cipher::CipherError
end

def scramble(passphrase)
  characters = " !\"\#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~"
  list = []
 
  #add numbers at the end
  for i in 1..100000
    testphrase = passphrase.dup
    testphrase.concat(i.to_s)
    list << testphrase
  return list
end

wallet = File.read(wallet_file)
seed_base64 = wallet.match(/'seed': '([^']+)'/).captures.first
$seed = Base64.decode64(seed_base64)
$cipher = OpenSSL::Cipher.new('aes-256-cbc')
$cipher.iv = $seed.slice!(0,16)
Dir.chdir File.dirname $electrum
list1 = scramble(passphrase)
for i in list1
  test i
end
puts "No luck."
exit 1