Code:
#!/usr/bin/ruby -w
passphrase = "oops"
def test(phrase)
print phrase, "\t"
system("./bitcoind", "walletpassphrase", phrase, "20")
case $?.exitstatus
when 0
puts "Found it! #{phrase}"
exit 0
when 127
puts "bitcoind not found in current dir"
exit 1
end
end
def scramble(passphrase)
characters = " !\"\#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~"
list = []
# transpose adjacent chars
(passphrase.length - 1).times do |i|
testphrase = passphrase.dup
testphrase[i] = passphrase[i+1]
testphrase[i+1] = passphrase[i]
list << testphrase
end
# delete one char
passphrase.length.times do |i|
testphrase = passphrase.dup
testphrase = testphrase[0,i] + testphrase[(i+1)..-1]
list << testphrase
end
# substitutute one char
passphrase.length.times do |i|
characters.chars.each do |c|
testphrase = passphrase.dup
testphrase[i] = c
list << testphrase
end
end
# insert one char
(passphrase.length + 1).times do |i|
characters.chars.each do |c|
testphrase = passphrase.dup
testphrase.insert(i, c)
list << testphrase
end
end
return list.uniq
end
list1 = scramble(passphrase)
list1.each { |i| test i }
list1.each { |i| scramble(i).each { |j| test j }}
puts "No luck."
exit 1
Otherwise it would be difficult to find an address with a 0 balance I would think. 
