Recently I came across a new file format called RSDF, these appear to be txt files which have a bunch of links in them, so called link containers. I wanted to access the URLS in these files, but I didnt really want to entrust my computer to just “any” application. So after a bit of searching I came across this crafty german website from there I got the python script to decrypt the RSDF files, this Python script requires:

Python (doh!!)
Python-crypto
Probably something else also…..

from their its as simple as: drsdf.py rsdfcontainer.rsdf
and it outputs to your screen! So without further ado here it is:

    #!/usr/bin/env python
    # drsdf.py

    import binascii
    import base64
    from Crypto.Cipher import AES
    import sys

    # 8C 35 19 2D 96 4D C3 18 2C 6F 84 F3 25 22 39 EB 4A 32 0D 25

    file = sys.argv[1]

    file = file.replace(".ccf", ".rsdf")
    f = open(file, "r")
    data = f.read()
    f.close()

    f = open(file, "w")
    f.write(data.split("x00")[0])
    f.close()

    infile = sys.argv[1]
    Key = binascii.unhexlify('8C35192D964DC3182C6F84F3252239EB4A320D2500000000')

    IV = binascii.unhexlify('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF')
    IV_Cipher = AES.new(Key,AES.MODE_ECB)
    IV = IV_Cipher.encrypt(IV)

    obj = AES.new(Key,AES.MODE_CFB,IV)

    rsdf = open(infile,'r')

    data = rsdf.read()
    data = binascii.unhexlify(''.join(data.split()))
    data = data.splitlines()

    for link in data:
    link = base64.b64decode(link)
    link = obj.decrypt(link)
    print link.replace('CCF: ','')

    rsdf.close()

Happy Downloading!