def main():
setup_oracle()
ct = encryption_oracle("A" * 32)
cut = ct[16:32]
paste = common.xor_strings(
common.xor_strings("BBBB;admin=true;", "A" * 16), cut)
print decryption_oracle(ct[0:16] + paste + ct[32:])
def post(self):
expected = ['pb1', 'pb2', 'pb3', 'mg', 'he']
data = {}
del qlog.buf[:]
locs = {}
for item in expected:
i = request.json.get(item)
if i:
x, y = i.split(',')
locs[item] = Cell(int(x), int(y))
if len(locs.keys()) != len(expected):
error = {"code": "MISSING_SOMETHING"}
return jsonify({'error': error}), 400
pirate_band = [Unit(pirate_basetype) for _ in range(3)]
locations = [locs[item] for item in ['pb1', 'pb2', 'pb3']]
unit_locations = {pirate_band[i]: locations[i] for i in range(3)}
unit_locations[Unit(mud_golem_basetype)] = locs['mg']
dun = Dungeon(unit_locations, 8, 8, hero_entrance=locs['he'])
test_game = DreamGame.start_dungeon(dun, Unit(demohero_basetype))
all_units = test_game.print_all_units()
xprint(all_units)
hero_turns = test_game.loop(player_berserk=True)
xprint("hero has made {} turns.".format(hero_turns))
message = json.dumps({'log': qlog.buf})
key = genkey(len(message))
ciphertext = xor_strings(bytes(message, "ascii"), key)
byt1 = base64.standard_b64encode(ciphertext)
byt2 = base64.standard_b64encode(key)
data['b1'] = byt1.decode('ascii')
data['b2'] = byt2.decode('ascii')
output = json.dumps(data)
return output, 200
def solve_block(curblock, prevblock):
intermediate = [""] * 16
bytes_recovered = ""
nextpad = ""
for i in range(15, -1, -1):
# print i
# print bytes_recovered
# print nextpad
slide = "A" * i
candidates = []
for t in range(0x100):
if decryption_oracle(curblock, slide + chr(t) + nextpad):
candidates.append(chr(t))
if len(candidates) != 1:
print "unlucky!"
# print candidates
exit(1)
else:
match = candidates[0]
intermediate[i] = chr(ord(match) ^ (16 - i))
bytes_recovered = chr(ord(match) ^ ord(prevblock[i])
^ (16 - i)) + bytes_recovered
nextpad = common.xor_strings((chr(16 - i + 1) * (16 - i)),
intermediate[i:])
return bytes_recovered
def aes_ctr_encrypt(pt, key, nonce):
ctr = 0
ct = ""
for i in range(0, len(pt), 16):
# little endian ctr string
keystream_input = struct.pack("<QQ", nonce, ctr)
keystream = common.aes_encrypt_block(keystream_input, key)
ct += common.xor_strings(keystream[:len(pt[i:i + 16])], pt[i:i + 16])
ctr = (ctr + 1) % (2**64)
return ct
def aes_ctr_encrypt(pt, key, nonce):
ctr = 0
ct = ""
for i in range(0, len(pt), 16):
# little endian ctr string
keystream_input = struct.pack("<QQ", nonce, ctr)
keystream = common.aes_encrypt_block(keystream_input, key)
ct += common.xor_strings(keystream[:len(pt[i:i+16])], pt[i:i+16])
ctr = (ctr + 1) % (2 ** 64)
return ct
def demo():
data = {}
del qlog.buf[:]
test_game = demo_game()
all_units = test_game.print_all_units()
xprint(all_units)
hero_turns = test_game.loop(player_berserk=True)
xprint("hero has made {} turns.".format(hero_turns))
message = json.dumps({'log': qlog.buf})
key = genkey(len(message))
byt1 = base64.standard_b64encode(xor_strings(bytes(message, "ascii"), key))
byt2 = base64.standard_b64encode(key)
data['b1'] = byt1.decode('ascii')
data['b2'] = byt2.decode('ascii')
output = json.dumps(data)
return output, 200
def solve_block(curblock, prevblock):
intermediate = [""] * 16
bytes_recovered = ""
nextpad = ""
for i in range(15, -1, -1):
# print i
# print bytes_recovered
# print nextpad
slide = "A" * i
candidates = []
for t in range(0x100):
if decryption_oracle(curblock, slide + chr(t) + nextpad):
candidates.append(chr(t))
if len(candidates) != 1:
print "unlucky!"
# print candidates
exit(1)
else:
match = candidates[0]
intermediate[i] = chr(ord(match) ^ (16 - i))
bytes_recovered = chr(ord(match) ^ ord(prevblock[i]) ^ (16 - i)) + bytes_recovered
nextpad = common.xor_strings((chr(16 - i + 1) * (16 - i)), intermediate[i:])
return bytes_recovered
def main():
setup_oracle()
ct = encryption_oracle("A" * 32)
cut = ct[16:32]
paste = common.xor_strings(common.xor_strings("BBBB;admin=true;", "A" * 16), cut)
print decryption_oracle(ct[0:16] + paste + ct[32:])