new_contents: import gmpy
  from libnum import *
  
  # get N with: openssl rsa -in key.pem -pubin -text -modulus
  N = long('00b0...0bd', 16)
  orig = s2n(open("enc.dat").read().rstrip())
  
  c = orig
  while True:
      m = gmpy.root(c, 3)[0]
      if pow(m, 3, N) == orig:
          print "pwned", n2s(m)
          break
      c += N
  
subject: Create rsa-exponent-bruteforce.py