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#!/usr/bin/env python
import base64
import sys
import time
import subprocess
import threading
from Crypto import Random
from Crypto.Cipher import AES
BS = 16
pad = lambda s: s + (BS - len(s) % BS) * chr(BS - len(s) % BS)
unpad = lambda s : s[0:-ord(s[-1])]
magic = "SHA2017"
class AESCipher:
def __init__( self, key ):
self.key = key
def encrypt( self, raw ):
raw = pad(raw)
iv = Random.new().read( AES.block_size )
cipher = AES.new( self.key, AES.MODE_CBC, iv )
return base64.b64encode( iv + cipher.encrypt( raw ) )
def decrypt( self, enc_orig ):
try:
enc = base64.b64decode(enc_orig)
except:
# print enc_orig
enc = base64.b64decode(enc_orig[:-1])
iv = enc[:16]
if len(iv) != 16:
return ""
cipher = AES.new(self.key, AES.MODE_CBC, iv )
return unpad(cipher.decrypt( enc[16:] ))
key = "K8djhaIU8H2d1jNb"
cipher = AESCipher(key)
# out = open("out.bin","wb")
kibbles = {}
maxcnt = 0
data = open(sys.argv[1],"rb")
for l in data.readlines():
# if len(l[8:]) % 16 != 0:
# print l
try:
new_d = cipher.decrypt(l[8:].rstrip())
except:
pass
# print l[8:]
if new_d[0:7] == "getfile":
if len(new_d.split(":")) == 3:
cnt = int(new_d.split(":")[1])
datachunk = new_d.split(":")[2]
if cnt in kibbles.keys() and base64.urlsafe_b64decode(datachunk) != kibbles[cnt]:
print "MISMATCH %d" % int(cnt)
else:
print "WRITING OUT %d" % int(cnt)
kibbles[cnt] = base64.urlsafe_b64decode(datachunk)
if cnt > maxcnt:
maxcnt = cnt
# out.write(base64.urlsafe_b64decode(datachunk))
else:
print new_d
else:
print new_d
out = open("out.bin","wb")
for i in range(0,maxcnt + 1):
out.write(kibbles[i])
out.close()
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