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extract PACS-parsing routines to wiegand_formats.c
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@jkramarz
jkramarz committed Jan 6, 2025
1 parent dc23652 commit 611dc0e
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Showing 4 changed files with 77 additions and 144 deletions.
71 changes: 2 additions & 69 deletions client/src/cmdhficlass.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5441,75 +5441,8 @@ static int CmdHFiClassSAM(const char *Cmd) {
// third padded
// fourth ..
uint8_t *d = resp.data.asBytes;
uint8_t n = d[1] - 1; // skip length byte
uint8_t pad = d[2];
char *binstr = (char *)calloc((n * 8) + 1, sizeof(uint8_t));
if (binstr == NULL) {
return PM3_EMALLOC;
}

bytes_2_binstr(binstr, d + 3, n);

PrintAndLogEx(NORMAL, "");
PrintAndLogEx(SUCCESS, "PACS......... " _GREEN_("%s"), sprint_hex_inrow(d + 2, resp.length - 2));
PrintAndLogEx(SUCCESS, "padded bin... " _GREEN_("%s") " ( %zu )", binstr, strlen(binstr));

binstr[strlen(binstr) - pad] = '\0';
PrintAndLogEx(SUCCESS, "bin.......... " _GREEN_("%s") " ( %zu )", binstr, strlen(binstr));

size_t hexlen = 0;
uint8_t hex[16] = {0};
binstr_2_bytes(hex, &hexlen, binstr);
PrintAndLogEx(SUCCESS, "hex.......... " _GREEN_("%s"), sprint_hex_inrow(hex, hexlen));

uint32_t top = 0, mid = 0, bot = 0;
if (binstring_to_u96(&top, &mid, &bot, binstr) != strlen(binstr)) {
PrintAndLogEx(ERR, "Binary string contains none <0|1> chars");
free(binstr);
return PM3_EINVARG;
}

PrintAndLogEx(NORMAL, "");
PrintAndLogEx(INFO, "Wiegand decode");
wiegand_message_t packed = initialize_message_object(top, mid, bot, strlen(binstr));
HIDTryUnpack(&packed);

PrintAndLogEx(NORMAL, "");

if (strlen(binstr) >= 26 && verbose) {

// iCLASS Legacy
PrintAndLogEx(INFO, "Clone to " _YELLOW_("iCLASS Legacy"));
PrintAndLogEx(SUCCESS, " hf iclass encode --ki 0 --bin %s", binstr);
PrintAndLogEx(NORMAL, "");

// HID Prox II
PrintAndLogEx(INFO, "Downgrade to " _YELLOW_("HID Prox II"));
PrintAndLogEx(SUCCESS, " lf hid clone -w H10301 --bin %s", binstr);
PrintAndLogEx(NORMAL, "");

// MIFARE Classic
char mfcbin[28] = {0};
mfcbin[0] = '1';
memcpy(mfcbin + 1, binstr, strlen(binstr));
binstr_2_bytes(hex, &hexlen, mfcbin);

PrintAndLogEx(INFO, "Downgrade to " _YELLOW_("MIFARE Classic") " (Pm3 simulation)");
PrintAndLogEx(SUCCESS, " hf mf eclr;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 0 -d 049DBA42A23E80884400C82000000000;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 1 -d 1B014D48000000000000000000000000;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 3 -d A0A1A2A3A4A5787788C189ECA97F8C2A;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 5 -d 020000000000000000000000%s;", sprint_hex_inrow(hex, hexlen));
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 7 -d 484944204953787788AA204752454154;");
PrintAndLogEx(SUCCESS, " hf mf sim --1k -i;");
PrintAndLogEx(NORMAL, "");

PrintAndLogEx(INFO, "Downgrade to " _YELLOW_("MIFARE Classic 1K"));
PrintAndLogEx(SUCCESS, " hf mf encodehid --bin %s", binstr);
PrintAndLogEx(NORMAL, "");
}
free(binstr);

HIDDumpPACSBits(d+2, d[1], verbose);

return PM3_SUCCESS;
}

Expand Down
77 changes: 2 additions & 75 deletions client/src/cmdhfseos.c
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Original file line number Diff line number Diff line change
Expand Up @@ -130,79 +130,6 @@ static int CmdHfSeosList(const char *Cmd) {
return CmdTraceListAlias(Cmd, "hf seos", "seos -c");
}

static int dump_PACS_bits(const uint8_t * const data, const uint8_t length, bool verbose){
uint8_t n = length - 1;
uint8_t pad = data[0];
char *binstr = (char *)calloc((length * 8) + 1, sizeof(uint8_t));
if (binstr == NULL) {
return PM3_EMALLOC;
}

bytes_2_binstr(binstr, data + 1, n);

PrintAndLogEx(NORMAL, "");
PrintAndLogEx(SUCCESS, "PACS......... " _GREEN_("%s"), sprint_hex_inrow(data, length));
PrintAndLogEx(SUCCESS, "padded bin... " _GREEN_("%s") " ( %zu )", binstr, strlen(binstr));

binstr[strlen(binstr) - pad] = '\0';
PrintAndLogEx(SUCCESS, "bin.......... " _GREEN_("%s") " ( %zu )", binstr, strlen(binstr));

size_t hexlen = 0;
uint8_t hex[16] = {0};
binstr_2_bytes(hex, &hexlen, binstr);
PrintAndLogEx(SUCCESS, "hex.......... " _GREEN_("%s"), sprint_hex_inrow(hex, hexlen));

uint32_t top = 0, mid = 0, bot = 0;
if (binstring_to_u96(&top, &mid, &bot, binstr) != strlen(binstr)) {
PrintAndLogEx(ERR, "Binary string contains none <0|1> chars");
free(binstr);
return PM3_EINVARG;
}

PrintAndLogEx(NORMAL, "");
PrintAndLogEx(INFO, "Wiegand decode");
wiegand_message_t packed = initialize_message_object(top, mid, bot, strlen(binstr));
HIDTryUnpack(&packed);

PrintAndLogEx(NORMAL, "");

if (strlen(binstr) >= 26 && verbose) {

// iCLASS Legacy
PrintAndLogEx(INFO, "Clone to " _YELLOW_("iCLASS Legacy"));
PrintAndLogEx(SUCCESS, " hf iclass encode --ki 0 --bin %s", binstr);
PrintAndLogEx(NORMAL, "");

// HID Prox II
PrintAndLogEx(INFO, "Downgrade to " _YELLOW_("HID Prox II"));
PrintAndLogEx(SUCCESS, " lf hid clone -w H10301 --bin %s", binstr);
PrintAndLogEx(NORMAL, "");

// MIFARE Classic
char mfcbin[28] = {0};
mfcbin[0] = '1';
memcpy(mfcbin + 1, binstr, strlen(binstr));
binstr_2_bytes(hex, &hexlen, mfcbin);

PrintAndLogEx(INFO, "Downgrade to " _YELLOW_("MIFARE Classic") " (Pm3 simulation)");
PrintAndLogEx(SUCCESS, " hf mf eclr;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 0 -d 049DBA42A23E80884400C82000000000;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 1 -d 1B014D48000000000000000000000000;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 3 -d A0A1A2A3A4A5787788C189ECA97F8C2A;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 5 -d 020000000000000000000000%s;", sprint_hex_inrow(hex, hexlen));
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 7 -d 484944204953787788AA204752454154;");
PrintAndLogEx(SUCCESS, " hf mf sim --1k -i;");
PrintAndLogEx(NORMAL, "");

PrintAndLogEx(INFO, "Downgrade to " _YELLOW_("MIFARE Classic 1K"));
PrintAndLogEx(SUCCESS, " hf mf encodehid --bin %s", binstr);
PrintAndLogEx(NORMAL, "");
}
free(binstr);
return PM3_SUCCESS;
}


// get a SIO media type based on the UID
// uid[8] tag uid
// returns description of the best match
Expand Down Expand Up @@ -297,7 +224,7 @@ static int CmdHfSeosSAM(const char *Cmd) {
if(d[0] == 0xbd && d[2] == 0x8a && d[4] == 0x03){
uint8_t pacs_length = d[5];
uint8_t * pacs_data = d + 6;
int res = dump_PACS_bits(pacs_data, pacs_length, verbose);
int res = HIDDumpPACSBits(pacs_data, pacs_length, verbose);
if(res != PM3_SUCCESS){
return res;
}
Expand All @@ -315,7 +242,7 @@ static int CmdHfSeosSAM(const char *Cmd) {
const uint8_t * pacs = d + 6;
const uint8_t pacs_length = pacs[1];
const uint8_t * pacs_data = pacs + 2;
int res = dump_PACS_bits(pacs_data, pacs_length, verbose);
int res = HIDDumpPACSBits(pacs_data, pacs_length, verbose);
if(res != PM3_SUCCESS){
return res;
}
Expand Down
72 changes: 72 additions & 0 deletions client/src/wiegand_formats.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1663,3 +1663,75 @@ void HIDUnpack(int idx, wiegand_message_t *packed) {
hid_print_card(&card, FormatTable[idx]);
}
}

int HIDDumpPACSBits(const uint8_t * const data, const uint8_t length, bool verbose){
uint8_t n = length - 1;
uint8_t pad = data[0];
char *binstr = (char *)calloc((length * 8) + 1, sizeof(uint8_t));
if (binstr == NULL) {
return PM3_EMALLOC;
}

bytes_2_binstr(binstr, data + 1, n);

PrintAndLogEx(NORMAL, "");
PrintAndLogEx(SUCCESS, "PACS......... " _GREEN_("%s"), sprint_hex_inrow(data, length));
PrintAndLogEx(SUCCESS, "padded bin... " _GREEN_("%s") " ( %zu )", binstr, strlen(binstr));

binstr[strlen(binstr) - pad] = '\0';
PrintAndLogEx(SUCCESS, "bin.......... " _GREEN_("%s") " ( %zu )", binstr, strlen(binstr));

size_t hexlen = 0;
uint8_t hex[16] = {0};
binstr_2_bytes(hex, &hexlen, binstr);
PrintAndLogEx(SUCCESS, "hex.......... " _GREEN_("%s"), sprint_hex_inrow(hex, hexlen));

uint32_t top = 0, mid = 0, bot = 0;
if (binstring_to_u96(&top, &mid, &bot, binstr) != strlen(binstr)) {
PrintAndLogEx(ERR, "Binary string contains none <0|1> chars");
free(binstr);
return PM3_EINVARG;
}

PrintAndLogEx(NORMAL, "");
PrintAndLogEx(INFO, "Wiegand decode");
wiegand_message_t packed = initialize_message_object(top, mid, bot, strlen(binstr));
HIDTryUnpack(&packed);

PrintAndLogEx(NORMAL, "");

if (strlen(binstr) >= 26 && verbose) {

// iCLASS Legacy
PrintAndLogEx(INFO, "Clone to " _YELLOW_("iCLASS Legacy"));
PrintAndLogEx(SUCCESS, " hf iclass encode --ki 0 --bin %s", binstr);
PrintAndLogEx(NORMAL, "");

// HID Prox II
PrintAndLogEx(INFO, "Downgrade to " _YELLOW_("HID Prox II"));
PrintAndLogEx(SUCCESS, " lf hid clone -w H10301 --bin %s", binstr);
PrintAndLogEx(NORMAL, "");

// MIFARE Classic
char mfcbin[28] = {0};
mfcbin[0] = '1';
memcpy(mfcbin + 1, binstr, strlen(binstr));
binstr_2_bytes(hex, &hexlen, mfcbin);

PrintAndLogEx(INFO, "Downgrade to " _YELLOW_("MIFARE Classic") " (Pm3 simulation)");
PrintAndLogEx(SUCCESS, " hf mf eclr;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 0 -d 049DBA42A23E80884400C82000000000;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 1 -d 1B014D48000000000000000000000000;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 3 -d A0A1A2A3A4A5787788C189ECA97F8C2A;");
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 5 -d 020000000000000000000000%s;", sprint_hex_inrow(hex, hexlen));
PrintAndLogEx(SUCCESS, " hf mf esetblk --blk 7 -d 484944204953787788AA204752454154;");
PrintAndLogEx(SUCCESS, " hf mf sim --1k -i;");
PrintAndLogEx(NORMAL, "");

PrintAndLogEx(INFO, "Downgrade to " _YELLOW_("MIFARE Classic 1K"));
PrintAndLogEx(SUCCESS, " hf mf encodehid --bin %s", binstr);
PrintAndLogEx(NORMAL, "");
}
free(binstr);
return PM3_SUCCESS;
}
1 change: 1 addition & 0 deletions client/src/wiegand_formats.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,7 @@ bool HIDPack(int format_idx, wiegand_card_t *card, wiegand_message_t *packed, bo
bool HIDTryUnpack(wiegand_message_t *packed);
void HIDPackTryAll(wiegand_card_t *card, bool preamble);
void HIDUnpack(int idx, wiegand_message_t *packed);
int HIDDumpPACSBits(const uint8_t * const data, const uint8_t length, bool verbose);
void print_wiegand_code(wiegand_message_t *packed);
void print_desc_wiegand(cardformat_t *fmt, wiegand_message_t *packed);
#endif

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