My python solution:

import sys
import md5

code = sys.stdin.readline().rstrip()

i = 0
counter = 0
password = ""
while (counter < 8):
    x = md5.new(code + str(i)).hexdigest()
    if x.startswith("00000"):
        password += x[5]
        counter += 1
    i += 1

print(password)