Passat 95320 Comfort Module / learning algorithm / Xor

[cdgold3]

Hi Guys,

I have been looking at the following thread: https://www.digital-kaos.co.uk/forums/showthread.php/424418-Passat-95320-Comfort-Module-B6-B7-CC-3C-PIN-and-CS-Topic

I got given a 3C0 959 433R ccm to mess around with, downloaded the dump to see whats going on and trying to get my head around Xor.

Thanks to the information in the thread and all over DK, with posts from other members/ screen shots from filutek a lot of it makes sense.

Using filutek's orignal dump/posts and using the pin section only (as he posted) you get the following:

"pin 52276 ... hex 7981 xor B5B5 = CC34 = 52276" using the windows calculator is i would expect.

Using my test ccm dump and dunt.at tool.

Pin is 11480 ... hex 7682 xor ???? = ???? = 11480

If i was to use dunt.at to change the pin to:

11480 = 76 82
11481 = 76 83
11470 = 76 94
00147 = 5b 8c

I'm i able to work out the Xor with this mentioned or am i wasting my time?

Just looking for any pointers

[immoneard]

Why would you chnage Pin?
There is many software out there that cover all data chnage for this .

[cdgold3]

Hi immoneard,

I am trying to work out the missing digits in the CS but I need to know the xor. So I can use dunt.at to decrypt the dump.

As I don't know what they are apart from say a unencrypted dump and the the xor are randomly generated but are only 4 digest long.

To me using the pin area would help understand the xor more easy from a few uncoded dumps around here.

I think that makes sense. :peaceful: