Wishful Coding

Didn't you ever wish your computer understood you?

31c3 Lightning Talk

I’ve been putting off writing this post for far to long, because I’m to busy hacking on other things. So here are the video, slides, and code. Enjoy.

Slides

import usb.core
import binascii
import re

dev = usb.core.find(idProduct=0x001e, idVendor=0x0b0c)
dev.set_configuration()

def hex_print(s):
    print(binascii.hexlify(s).decode(), re.sub("[^a-zA-Z0-9]", ".", str(s, 'ascii', 'replace')))

def write(data):
    s = binascii.unhexlify(data)
    hex_print(s)
    dev.write(0x02, s)

def read(t=100):
    try:
        while True:
            s = dev.read(0x81, 8, t)
            hex_print(s)
            t = 100
    except usb.core.USBError:
        pass
    print('---')

def message(data, display=0x01):
    #write = print
    data = chr(display).encode() + chr(len(data)).encode() + data
    write(b"010305" + binascii.hexlify(chr(len(data)).encode()) + b"00000000")
    for i in range(int(len(data)/6)):
        s = data[i*6:i*6+6]
        b = binascii.hexlify(s)
        write(b"0006" + b)

    i += 1
    s = data[i*6:i*6+6]
    b = binascii.hexlify(s.ljust(6))
    write(b'0004' + b)

# always the same lenth
def confirm_login(data, lang='nl'):
    data = b'\x03' + data
    write(b"0103081500000000")
    for i in range(3):
        s = data[i*6:i*6+6]
        b = binascii.hexlify(s.ljust(6))
        write(b"0006" + b)

    write(b'000300' + binascii.hexlify(lang) + b'000000')

if __name__ == '__main__':
    write(b"0209000000000000") # shield
    read()
    write(b"0103020000000000") # version
    read()
    write(b"0103010200000000") # insert card
    write(b"00026e6c00000000")
    read(10000)
    write(b"0103030000000000") # card info
    read()
    write(b"0103040000000000") # ask pin
    read(60000)
    message(b'abbalalalala', 0x00) # sign data
    read()

    message(b"Never gonna give you up Never gonna let you down                    ")
    read(10000)

    write(b"0103060000000000") # cryptogram
    read()

    confirm_login(b'You where drunk', b'en')
    read()
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