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iceman1001 avatar iceman1001 commented on September 7, 2024

Odd, 32 or 64b OS?
I assume you compiled with clean and flashed properly. Since I see AVX512F, but there shouldn't be any difference in the hardnested loop client side based on device.

Might be something with the device not answering a correct message for turning off, which triggers this.
Still it would be a long shot.

Are you able to debug with GDB?

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ikarus23 avatar ikarus23 commented on September 7, 2024

OK, I was now able to crack the key using said arch system for the first time. The difference was, that the hardnested never hit (Ignoring Sum(a8) properties).

[=]       24 |    2421 | Apply bit flip properties                               |      1286970496 |    2s
[=]       25 |    2421 | (1. guess: Sum(a8) = 224)                               |      1286970496 |    2s
[=]       25 |    2421 | Apply Sum(a8) and all bytes bitflip properties          |      1286970496 |    2s
[=]       25 |    2421 | (2. guess: Sum(a8) = 128)                               |      1650445824 |    3s
[=]       26 |    2421 | Apply Sum(a8) and all bytes bitflip properties          |      1650445824 |    3s
[=]       27 |    2421 | (3. guess: Sum(a8) = 176)                               |      1366196096 |    2s
[=]       27 |    2421 | Apply Sum(a8) and all bytes bitflip properties          |      1366190464 |    2s
[=]       27 |    2421 | (4. guess: Sum(a8) = 144)                               |      1639314560 |    3s
[=]       27 |    2421 | Apply Sum(a8) and all bytes bitflip properties          |      1639302144 |    3s
[=]       27 |    2421 | (5. guess: Sum(a8) = 160)                               |      1915817728 |    3s
[=]       28 |    2421 | Apply Sum(a8) and all bytes bitflip properties          |      1915817728 |    3s
[=]       28 |    2421 | (6. guess: Sum(a8) = 192)                               |      2538548480 |    4s
[=]       28 |    2421 | Apply Sum(a8) and all bytes bitflip properties          |      2538546176 |    4s
[=]       28 |    2421 | (7. guess: Sum(a8) = 136)                               |      3514929152 |    6s
[=]       29 |    2421 | Apply Sum(a8) and all bytes bitflip properties          |      3514932480 |    6s
[=]       29 |    2421 | (8. guess: Sum(a8) = 200)                               |      5112785920 |    9s
[=]       29 |    2421 | Apply Sum(a8) and all bytes bitflip properties          |      5112780800 |    9s
[=]       29 |    2421 | (9. guess: Sum(a8) = 152)                               |      8961154048 |   16s
[=]       30 |    2421 | Apply Sum(a8) and all bytes bitflip properties          |      8961154048 |   16s
[=]       30 |    2421 | Brute force phase completed.  Key found: XXXXXXXX   |               0 |    0s

Also, as discussed over discord, It does not seem to be a PM3 rdv4 vs. PM3 Easy. The issue is probably with the system. I was able to crack that key using the same PM3 rdv4 on another arch device.

from proxmark3.

ikarus23 avatar ikarus23 commented on September 7, 2024

OK, got some other news. I start to believe that the issue is with AVX512, like you expected. I have not Issues recovering the keys using the PM3 rdv4 on a system that has only AVX2. But I get the issue mentioned in the initial post on an system with AVX512.

Another quick test I did: I used a kali vm on the system with AVX512. Maybe the AVX512 feature is not exposed to the vm, because inside the vm everything is working fine with hardnested.

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