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Merge pull request #2916 from Antiklesys/master

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Sam firmware output in decimal and unhash to detect AES key format
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Iceman 2025-06-29 22:46:33 +02:00 • committed by GitHub
commit fbdc85d6ad
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2 changed files with 23 additions and 3 deletions
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18
client/src/cmdhficlass.c
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@ -5058,6 +5058,24 @@ static int CmdHFiClassUnhash(const char *Cmd) {
return PM3_EINVARG;
}
//check if divkey respects hash0 rules (legacy format) or if it could be AES Based
int count_lsb0 = 0;
int count_lsb1 = 0;
for (int i = 0; i < PICOPASS_BLOCK_SIZE; i++) {
if ((div_key[i] & 0x01) == 0) {
count_lsb0++;
} else {
count_lsb1++;
}
}
if(count_lsb0 != 4 || count_lsb1 != 4){
PrintAndLogEx(INFO, _RED_("Incorrect LSB Distribution, unable to unhash - the key might be AES based."));
return PM3_SUCCESS;
}
PrintAndLogEx(INFO, "Diversified key... %s", sprint_hex_inrow(div_key, sizeof(div_key)));
PrintAndLogEx(INFO, "-----------------------------------");
invert_hash0(div_key);