Thread: Atlantica Online NDT files decryptor

With this simple script you can extract the NDT Files from Atlantica Online

How to:
Get Python 2.x version
run script

Code:

from Tkinter import *
from tkFileDialog   import askopenfilename 
import struct

filename = askopenfilename()

if len(filename) == 0:
    exit()

outputfilename = filename[:-4] + '.txt'

f = open(filename, 'rb')
buf = f.read()
f.close()

HEADER_SIZE = 0x18

seed = struct.unpack('<H', buf[12:14])[0]

output = []

for i in xrange(HEADER_SIZE, len(buf)-1):
    v = struct.unpack('<B', buf[i])[0]
    v -= seed
    v = v & 0xFF
    b2 = struct.unpack('<B', buf[i+1])[0]
    x = v ^ b2
    output.append(x)

f = open(outputfilename, 'wb')
for v in output:
    f.write(struct.pack('B', v)[0])
f.close()
exit()

Note: this script, will EAT the last byte of the file

by bootdisk

What is inside those archives?