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 Syndrome Nagra2 cards, AVR-X Nagra2 cards CALCULATING THE HASH RANGES FROM A CMD82 BY EXECV Before I start this tutorial, i would suggest you reading huclass07 first. I will be disassembling cmd82's, and in huclass07 it shows you how. Ok, enough small talk, let's go! This is our WONDERFUL hashchart. I suggest you save this into a file. It is useful: 2D4C: 22F2 008B Ok, now, let's say our cmd82 looks something like this: Let's disassemble that: ok, let's focus on the hash range. Convert the hash range into binary: Hex Binary Now, we start counting down on the hash chart using our binary number for our hash range. 0 = do not hash. 1 = hash. So:
There, we see the ONLY line with a 1 next to it is 2F08 - 0132. So, 2F08-0132 is our hash area for that cmd. Let's try another: 8215000642 10F0 F100C0F1FF632B7DD070222AB21B2AF9 82 -> cmd82 So, our hash range is 10F0, let's convert that to binary again: Hex Binary There, now let's pop out our hashchart: Hash Chart 10F0 In Binary There, now, let's see which lines have a 1 at them: There, see how easy that was! |