Brutes a litecoin wallet password which has one character lost/forgotten.

walletcrack.py

# This script will brute a litecoin wallet whose password is missing one character.
# It requires python (duh) and the litecoinrpc library (https://github.com/deseret-tech/litecoin-python)
# The library allows leeching onto the local Litecoin-qt/litecoind client running on the computer.
# A litecoin.conf file must be placed in the litecoin data directory and contain the following (without the hashtags)

# server=1
# rpcuser=anything
# rpcpassword=anythinglol
# rpcallowip=127.0.0.1
# rpcport=18332

# This allows the client to accept commands from an entity running on the same computer. rpcport can also be 9332?
# You can verify these here https://litecoin.info/Litecoin.conf
# The rpcuser and ps can be anything, but cant be the same. It is not necessary to write down or keep 
# these. They are just required to be set to something in order for litecoinrpc to be able to connect
# to the litecoin client. See here if you dont believe me
# https://github.com/deseret-tech/litecoin-python/blob/master/sphinx/source/usage.rst

# Fire up litecoin-qt. Replace shortpass = 'insertpasshere' with the password below and then run this script!
# Tested on OS X 10.7.5

import sys
import string
import litecoinrpc
from litecoinrpc.exceptions import WalletPassphraseIncorrect

def search(chars, shortpass):
	for x in range(len(shortpass)+1):
		for y in range(len(chars)):
			passattempt = shortpass[:x] + chars[y] + shortpass[x:]
			sys.stdout.write("\rattempting: " + passattempt)
			sys.stdout.flush()
			try:
				conn.walletpassphrase(passattempt,1)
				print "\npassword is " + passattempt
				return
			except WalletPassphraseIncorrect,e:
				pass
	else:
		print "\ncorrect password not found"
		return

conn = litecoinrpc.connect_to_local()

chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~ '
shortpass = 'insertpasshere'
search(chars,shortpass)