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Merge pull request #2159 from merlokk/ginfo

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magic gen4 ginfo command
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Iceman 2023-11-05 23:50:45 +01:00 • committed by GitHub
commit c851ac7314
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 280 additions and 29 deletions
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1
CHANGELOG.md
View file

@ -3,6 +3,7 @@ All notable changes to this project will be documented in this file.
This project uses the changelog in accordance with [keepchangelog](http://keepachangelog.com/). Please use this to write notable changes, which is not the same as git commit log...
## [unreleased][unreleased]
- Added `hf mf ginfo` command for get info about Gen4 GTU configuration (@merlokk)
- Added support for loading Flipper PICOPASS dump files (@iceman1001)
- Fixed unknown chip identification (@jmichelp)
- Fixed `nfc decode` - now properly handles MFU dump files (@iceman1001)

6
client/src/cmdhficlass.c
View file

@ -1324,7 +1324,7 @@ static int CmdHFiClassESetBlk(const char *Cmd) {
static bool iclass_detect_new_pacs(uint8_t *d) {
uint8_t n = 0;
while (n++ < (PICOPASS_BLOCK_SIZE / 2)) {
if (d[n] &&
if (d[n] &&
d[n + 1] == 0xA6) {
return true;
}
@ -1332,7 +1332,7 @@ static bool iclass_detect_new_pacs(uint8_t *d) {
return false;
}
// block 7 decoder for PACS
// block 7 decoder for PACS
static int iclass_decode_credentials_new_pacs(uint8_t *d) {
uint8_t offset = 0;
@ -1349,7 +1349,7 @@ static int iclass_decode_credentials_new_pacs(uint8_t *d) {
return PM3_EMALLOC;
}
uint8_t n = PICOPASS_BLOCK_SIZE - offset - 2;
uint8_t n = PICOPASS_BLOCK_SIZE - offset - 2;
byte_2_binstr(binstr, d + offset + 2, n);
PrintAndLogEx(NORMAL, "");

78
client/src/cmdhfmf.c
View file

@ -7434,6 +7434,83 @@ static int CmdHF14AMfView(const char *Cmd) {
return PM3_SUCCESS;
}
// info about Gen4 GTU card
static int CmdHF14AGen4Info(const char *cmd) {
CLIParserContext *ctx;
CLIParserInit(&ctx, "hf mf ginfo",
"Read info about magic gen4 GTU card.",
"hf mf ginfo --> get info with default password 00000000\n"
"hf mf ginfo --pwd 01020304 --> get info with password\n"
);
void *argtable[] = {
arg_param_begin,
arg_lit0("v", "verbose", "verbose output"),
arg_str0("p", "pwd", "<hex>", "password 4bytes"),
arg_param_end
};
CLIExecWithReturn(ctx, cmd, argtable, true);
bool verbose = arg_get_lit(ctx, 1);
int pwd_len = 0;
uint8_t pwd[4] = {0};
CLIGetHexWithReturn(ctx, 3, pwd, &pwd_len);
CLIParserFree(ctx);
if (pwd_len != 0 && pwd_len != 4) {
PrintAndLogEx(FAILED, "Password must be 4 bytes length, got " _YELLOW_("%u"), pwd_len);
return PM3_EINVARG;
}
uint8_t resp[40] = {0};
size_t resplen = 0;
int res = mfG4GetConfig(pwd, resp, &resplen, verbose);
if (res != PM3_SUCCESS || resplen == 0) {
if (res == PM3_ETIMEOUT)
PrintAndLogEx(ERR, "No card in the field or card command timeout.");
else
PrintAndLogEx(ERR, "Error get config. Maybe not a Gen4 card?. error=%d rlen=%d", res, resplen);
return PM3_ESOFT;
}
PrintAndLogEx(INFO, "---------- Gen4 configuration ----------");
if (resplen != 30 && resplen != 32) {
PrintAndLogEx(INFO, "Raw config [%02d] %s", resplen, sprint_hex_inrow(resp, resplen));
PrintAndLogEx(WARNING, "Unknown config format");
return PM3_SUCCESS;
}
if (verbose)
PrintAndLogEx(INFO, "Raw config [%02d]..... %s", resplen, sprint_hex_inrow(resp, resplen));
PrintAndLogEx(INFO, "UL protocol......... %02x", resp[0]);
PrintAndLogEx(INFO, "UID length.......... %02x", resp[1]);
PrintAndLogEx(INFO, "Password............ %s", sprint_hex_inrow(&resp[2], 4));
PrintAndLogEx(INFO, "GTU mode............ %02x", resp[6]);
PrintAndLogEx(INFO, "ATS [%02d]............ %s", resp[7], sprint_hex_inrow(&resp[8], resp[7]));
PrintAndLogEx(INFO, "ATQA................ %02x%02x", resp[24], resp[25]);
PrintAndLogEx(INFO, "SAK................. %02x", resp[26]);
PrintAndLogEx(INFO, "UL mode............. %02x", resp[27]);
PrintAndLogEx(INFO, "max rd/wr sectors... %02x", resp[28]);
PrintAndLogEx(INFO, "block0 direct wr.... %02x", resp[29]);
res = mfG4GetFactoryTest(pwd, resp, &resplen, false);
if (res == PM3_SUCCESS && resplen > 2) {
if (verbose)
PrintAndLogEx(INFO, "Raw test [%02d]....... %s", resplen, sprint_hex_inrow(resp, resplen));
if (resp[resplen - 2] == 0x66 && resp[resplen - 1] == 0x66)
PrintAndLogEx(INFO, "Card type........... generic");
else if (resp[resplen - 2] == 0x02 && resp[resplen - 1] == 0xaa)
PrintAndLogEx(INFO, "Card type........... limited functionality");
else if (resp[resplen - 2] == 0x06 && resp[resplen - 1] == 0xa0)
PrintAndLogEx(INFO, "Card type........... broken functionality");
else
PrintAndLogEx(INFO, "Card type........... unknown %02x%02x", resp[resplen - 2], resp[resplen - 1]);
}
return PM3_SUCCESS;
}
// Read block from Gen4 GTU card
static int CmdHF14AGen4GetBlk(const char *cmd) {
CLIParserContext *ctx;
@ -8689,6 +8766,7 @@ static command_t CommandTable[] = {
{"gen3blk", CmdHf14AGen3Block, IfPm3Iso14443a, "Overwrite manufacturer block"},
{"gen3freeze", CmdHf14AGen3Freeze, IfPm3Iso14443a, "Perma lock UID changes. irreversible"},
{"-----------", CmdHelp, IfPm3Iso14443a, "-------------------- " _CYAN_("magic gen4 GTU") " --------------------------"},
{"ginfo", CmdHF14AGen4Info, IfPm3Iso14443a, "Info about configuration of the card"},
{"ggetblk", CmdHF14AGen4GetBlk, IfPm3Iso14443a, "Read block from card"},
{"gload", CmdHF14AGen4Load, IfPm3Iso14443a, "Load dump to card"},
{"gsave", CmdHF14AGen4Save, IfPm3Iso14443a, "Save dump from card into file or emulator"},

6
client/src/cmdhfmfu.c
View file

@ -70,7 +70,7 @@ static uint8_t default_pwd_pack[][4] = {
};
static uint64_t UL_TYPES_ARRAY[] = {
MFU_TT_UNKNOWN, MFU_TT_UL,
MFU_TT_UNKNOWN, MFU_TT_UL,
MFU_TT_UL_C, MFU_TT_UL_EV1_48,
MFU_TT_UL_EV1_128, MFU_TT_NTAG,
MFU_TT_NTAG_203, MFU_TT_NTAG_210,
@ -79,7 +79,7 @@ static uint64_t UL_TYPES_ARRAY[] = {
MFU_TT_MY_D, MFU_TT_MY_D_NFC,
MFU_TT_MY_D_MOVE, MFU_TT_MY_D_MOVE_NFC,
MFU_TT_MY_D_MOVE_LEAN, MFU_TT_NTAG_I2C_1K,
MFU_TT_NTAG_I2C_2K, MFU_TT_NTAG_I2C_1K_PLUS,
MFU_TT_NTAG_I2C_2K, MFU_TT_NTAG_I2C_1K_PLUS,
MFU_TT_NTAG_I2C_2K_PLUS, MFU_TT_FUDAN_UL,
MFU_TT_NTAG_213_F, MFU_TT_NTAG_216_F,
MFU_TT_UL_EV1, MFU_TT_UL_NANO_40,
@ -1891,7 +1891,7 @@ static int CmdHF14AMfUInfo(const char *Cmd) {
}
// Read signature
if ((tagtype & (MFU_TT_UL_EV1_48 | MFU_TT_UL_EV1_128 | MFU_TT_UL_EV1 | MFU_TT_UL_NANO_40 |
if ((tagtype & (MFU_TT_UL_EV1_48 | MFU_TT_UL_EV1_128 | MFU_TT_UL_EV1 | MFU_TT_UL_NANO_40 |
MFU_TT_NTAG_210u | MFU_TT_NTAG_213 | MFU_TT_NTAG_213_F | MFU_TT_NTAG_213_C |
MFU_TT_NTAG_213_TT | MFU_TT_NTAG_215 | MFU_TT_NTAG_216 | MFU_TT_NTAG_216_F |
MFU_TT_NTAG_I2C_1K | MFU_TT_NTAG_I2C_2K | MFU_TT_NTAG_I2C_1K_PLUS | MFU_TT_NTAG_I2C_2K_PLUS))) {

8
client/src/cmdnfc.c
View file

@ -113,12 +113,12 @@ static int CmdNfcDecode(const char *Cmd) {
return res;
}
uint8_t *tmp = dump;
uint8_t *tmp = dump;
// if not MIFARE Classic default sizes, assume its Ultralight/NTAG
if ( bytes_read != MIFARE_4K_MAX_BYTES
&& bytes_read != MIFARE_2K_MAX_BYTES
&& bytes_read != MIFARE_1K_MAX_BYTES
if ( bytes_read != MIFARE_4K_MAX_BYTES
&& bytes_read != MIFARE_2K_MAX_BYTES
&& bytes_read != MIFARE_1K_MAX_BYTES
&& bytes_read != MIFARE_MINI_MAX_BYTES) {
uint8_t **pd = &tmp;

26
client/src/fileutils.c
View file

@ -292,7 +292,7 @@ int saveFileJSONex(const char *preferredName, JSONFileType ftype, uint8_t *data,
break;
}
case jsfMfc_v2: {
iso14a_mf_extdump_t xdump;
memcpy(&xdump, data, sizeof(iso14a_mf_extdump_t));
@ -1038,7 +1038,7 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
// 256 + 2 newline chars + 1 null terminator
char line[256 + 2 + 1];
memset(line, 0, sizeof(line));
udata_t udata = (udata_t)data;
int n = 0;
uint32_t counter = 0;
@ -1067,14 +1067,14 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
// param_gethex_to_eol(line + 4, 0, udata.mfc->card_info.uid, sizeof(udata.mfc->card_info.uid), &n);
}
continue;
}
}
if (str_startswith(line, "atqa:")) {
if (ft == NFC_DF_MFC) {
// param_gethex_to_eol(line + 5, 0, udata.mfc->card_info.atqa, sizeof(udata.mfc->card_info.atqa), &n);
}
continue;
}
}
if (str_startswith(line, "sak:")) {
if (ft == NFC_DF_MFC) {
@ -1083,7 +1083,7 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
// udata.mfc->card_info.sak = sak & 0xFF;
}
continue;
}
}
if (str_startswith(line, "signature:")) {
if (ft == NFC_DF_MFC) {
@ -1091,7 +1091,7 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
param_gethex_to_eol(line + 11, 0, udata.mfu->signature, sizeof(udata.mfu->signature), &n);
}
continue;
}
}
if (str_startswith(line, "mifare version:")) {
if (ft == NFC_DF_MFC) {
@ -1099,7 +1099,7 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
param_gethex_to_eol(line + 16, 0, udata.mfu->version, sizeof(udata.mfu->version), &n);
}
continue;
}
}
if (str_startswith(line, "counter 0:")) {
int no = 0;
@ -1111,7 +1111,7 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
udata.mfu->counter_tearing[0][2] = no & 0xFF;
}
continue;
}
}
if (str_startswith(line, "tearing 0:")) {
if (ft == NFC_DF_MFC) {
@ -1121,7 +1121,7 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
udata.mfu->counter_tearing[0][3] = b & 0xFF;
}
continue;
}
}
if (str_startswith(line, "counter 1:")) {
int no = 0;
@ -1133,7 +1133,7 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
udata.mfu->counter_tearing[1][2] = no & 0xFF;
}
continue;
}
}
if (str_startswith(line, "tearing 1:")) {
if (ft == NFC_DF_MFC) {
@ -1155,7 +1155,7 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
udata.mfu->counter_tearing[2][2] = no & 0xFF;
}
continue;
}
}
if (str_startswith(line, "tearing 2:")) {
if (ft == NFC_DF_MFC) {
@ -1174,7 +1174,7 @@ int loadFileNFC_safe(const char *preferredName, void *data, size_t maxdatalen, s
udata.mfu->pages = n;
}
continue;
}
}
// Page 0: 04 10 56 CA
if (str_startswith(line, "page ")) {
@ -2317,7 +2317,7 @@ nfc_df_e detect_nfc_dump_format(const char *preferredName, bool verbose) {
break;
case NFC_DF_PICOPASS:
PrintAndLogEx(INFO, "detected PICOPASS based dump format");
break;
break;
case NFC_DF_UNKNOWN:
PrintAndLogEx(WARNING, "failed to detected dump format");
break;

37
client/src/mifare/gen4.h Normal file
View file

@ -0,0 +1,37 @@
//-----------------------------------------------------------------------------
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// See LICENSE.txt for the text of the license.
//-----------------------------------------------------------------------------
// High frequency ISO14443A commands
//-----------------------------------------------------------------------------
#ifndef __GEN4_H
#define __GEN4_H
#define GEN4_CMD_CONFIG_GTU 0x32
#define GEN4_CMD_CONFIG_ATS 0x34
#define GEN4_CMD_CONFIG_ATQA_SAK 0x35
#define GEN4_CMD_CONFIG_UID_LEN 0x68
#define GEN4_CMD_CONFIG_UL_ENABLE 0x69
#define GEN4_CMD_CONFIG_UL_MODE 0x6A
#define GEN4_CMD_CONFIG_UL_SECTOR_COUNT 0x6A
#define GEN4_CMD_DUMP_CONFIG 0xC6
#define GEN4_CMD_FACTORY_TEST 0xCC
#define GEN4_CMD_WRITE_BLOCK 0xCD
#define GEN4_CMD_READ_BLOCK 0xCE
#define GEN4_CMD_BL0_DIRECT_WRITE_EN 0xCF
#define GEN4_CMD_SET_CONFIG 0xF0
#define GEN4_CMD_SET_CONFIG_PERMANENT 0xF1
#define GEN4_CMD_CHANGE_PASSWORD 0xFE
#endif

114
client/src/mifare/mifarehost.c
View file

@ -40,6 +40,8 @@
#include "crypto/libpcrypto.h"
#include "util.h" // xor
#include "mbedtls/sha1.h" // SHA1
#include "cmdhf14a.h"
#include "gen4.h"
int mfDarkside(uint8_t blockno, uint8_t key_type, uint64_t *key) {
uint32_t uid = 0;
@ -1173,6 +1175,118 @@ int mfGen3Freeze(void) {
}
}
static int mfG4ExCommand(uint8_t cmd, uint8_t *pwd, uint8_t *data, size_t datalen, uint8_t *response, size_t *responselen, bool verbose) {
struct p {
uint8_t cmdheader;
uint8_t pwd[4];
uint8_t command;
uint8_t data[32];
} PACKED payload;
memset(&payload, 0, sizeof(payload));
if (datalen > sizeof(payload.data)) {
return PM3_EINVARG;
}
payload.cmdheader = 0xCF;
payload.command = cmd;
if (pwd != NULL) {
memcpy(payload.pwd, pwd, sizeof(payload.pwd));
}
if (data != NULL && datalen > 0) {
memcpy(payload.data, data, datalen);
}
int resplen = 0;
clearCommandBuffer();
SendCommandOLD(CMD_HF_ISO14443A_READER, ISO14A_CONNECT | ISO14A_RAW | ISO14A_NO_RATS | ISO14A_APPEND_CRC, 6 + datalen, 0, (uint8_t *)&payload, 6 + datalen);
PacketResponseNG resp;
if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {
if (resp.oldarg[0] != 2) {
if (verbose) PrintAndLogEx(ERR, "No card in the field.");
return PM3_ETIMEOUT;
}
iso14a_card_select_t card;
memcpy(&card, (iso14a_card_select_t *)resp.data.asBytes, sizeof(iso14a_card_select_t));
if (verbose) {
PrintAndLogEx(SUCCESS, " UID: " _GREEN_("%s"), sprint_hex(card.uid, card.uidlen));
PrintAndLogEx(SUCCESS, "ATQA: " _GREEN_("%02X %02X"), card.atqa[1], card.atqa[0]);
PrintAndLogEx(SUCCESS, " SAK: " _GREEN_("%02X [%" PRIu64 "]"), card.sak, resp.oldarg[0]);
}
} else {
if (verbose) PrintAndLogEx(ERR, "No card in the field.");
return PM3_ETIMEOUT;
}
if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {
resplen = resp.oldarg[0];
if (!resplen) {
if (verbose) PrintAndLogEx(ERR, "No card response.");
return PM3_EFAILED;
}
resplen = resplen - 2; // 14A CRC
if (resplen < 0)
resplen = 0;
if (resplen > 40) {
if (verbose) PrintAndLogEx(ERR, "Buffer too small(%d).", resplen);
return PM3_EOVFLOW;
}
if (response != NULL)
memcpy(response, resp.data.asBytes, resplen);
if (responselen != NULL)
*responselen = resplen;
return PM3_SUCCESS;
} else {
if (verbose) PrintAndLogEx(ERR, "Reply timeout.");
return PM3_ETIMEOUT;
}
}
int mfG4GetConfig(uint8_t *pwd, uint8_t *data, size_t *datalen, bool verbose) {
uint8_t resp[40] = {0};
size_t resplen = 0;
int res = mfG4ExCommand(GEN4_CMD_DUMP_CONFIG, pwd, NULL, 0, resp, &resplen, verbose);
if (res != PM3_SUCCESS) {
return res;
}
if (data != NULL)
memcpy(data, resp, resplen);
if (datalen != NULL)
*datalen = resplen;
return PM3_SUCCESS;
}
int mfG4GetFactoryTest(uint8_t *pwd, uint8_t *data, size_t *datalen, bool verbose) {
uint8_t resp[40] = {0};
size_t resplen = 0;
int res = mfG4ExCommand(GEN4_CMD_FACTORY_TEST, pwd, NULL, 0, resp, &resplen, verbose);
if (res != PM3_SUCCESS) {
return res;
}
if (data != NULL)
memcpy(data, resp, resplen);
if (datalen != NULL)
*datalen = resplen;
return PM3_SUCCESS;
}
int mfG4GetBlock(uint8_t *pwd, uint8_t blockno, uint8_t *data, uint8_t workFlags) {
struct p {
uint8_t blockno;

3
client/src/mifare/mifarehost.h
View file

@ -96,6 +96,9 @@ int mfGen3UID(uint8_t *uid, uint8_t uidlen, uint8_t *oldUid);
int mfGen3Block(uint8_t *block, int blockLen, uint8_t *newBlock);
int mfGen3Freeze(void);
int mfG4GetConfig(uint8_t *pwd, uint8_t *data, size_t *datalen, bool verbose);
int mfG4GetFactoryTest(uint8_t *pwd, uint8_t *data, size_t *datalen, bool verbose);
int mfG4GetBlock(uint8_t *pwd, uint8_t blockno, uint8_t *data, uint8_t workFlags);
int mfG4SetBlock(uint8_t *pwd, uint8_t blockno, uint8_t *data, uint8_t workFlags);

1
client/src/pm3line_vocabulary.h
View file

@ -366,6 +366,7 @@ const static vocabulary_t vocabulary[] = {
{ 0, "hf mf gen3uid" },
{ 0, "hf mf gen3blk" },
{ 0, "hf mf gen3freeze" },
{ 0, "hf mf ginfo" },
{ 0, "hf mf ggetblk" },
{ 0, "hf mf gload" },
{ 0, "hf mf gsave" },

28
doc/commands.json
View file

@ -279,6 +279,7 @@
"command": "data bmap",
"description": "Breaks down a hex value to binary according a template data bmap -d 16 -m 4,4 This will give two rows each with four bits",
"notes": [
"data bmap -d 3B",
"data bmap -d 3B -m 2,5,1"
],
"offline": true,
@ -3026,10 +3027,10 @@
},
"hf iclass configcard": {
"command": "hf iclass configcard",
"description": "Manage reader configuration card via Cardhelper, The generated config card will be uploaded to device emulator memory. You can start simulating `hf iclass sim -t 3` or use the emul commands",
"description": "Manage reader configuration card via Cardhelper or internal database, The generated config card will be uploaded to device emulator memory. You can start simulating `hf iclass sim -t 3` or use the emul commands",
"notes": [
"hf iclass configcard -l -> download config card settings",
"hf iclass configcard -p -> print all config cards",
"hf iclass configcard -l -> download config card settings from cardhelper",
"hf iclass configcard -p -> print all config cards in the database",
"hf iclass configcard --ci 1 -> view config card setting in slot 1",
"hf iclass configcard -g --ci 0 -> generate config file from slot 0"
],
@ -4553,6 +4554,21 @@
],
"usage": "hf mf ggetblk [-hv] -b <dec> [-p <hex>]"
},
"hf mf ginfo": {
"command": "hf mf ginfo",
"description": "Read info about magic gen4 GTU card.",
"notes": [
"hf mf ginfo -> get info with default password 00000000",
"hf mf ginfo --pwd 01020304 -> get info with password"
],
"offline": false,
"options": [
"-h, --help This help",
"-v, --verbose verbose output",
"-p, --pwd <hex> password 4bytes"
],
"usage": "hf mf ginfo [-hv] [-p <hex>]"
},
"hf mf gload": {
"command": "hf mf gload",
"description": "Load magic gen4 gtu card with data from (bin/eml/json) dump file or from emulator memory.",
@ -8939,7 +8955,7 @@
"-1, --ht1 Card type Hitag 1",
"-2, --ht2 Card type Hitag 2",
"-s, --hts Card type Hitag S",
"-m, --htm Card type Hitag \u03bc"
"-m, --htm Card type Hitag \u041e\u0458"
],
"usage": "lf hitag eload [-h12sm] -f <fn>"
},
@ -12015,8 +12031,8 @@
}
},
"metadata": {
"commands_extracted": 696,
"commands_extracted": 697,
"extracted_by": "PM3Help2JSON v1.00",
"extracted_on": "2023-10-30T12:11:34"
"extracted_on": "2023-11-05T22:22:55"
}
}

1
doc/commands.md
View file

@ -529,6 +529,7 @@ Check column "offline" for their availability.
|`hf mf gen3uid `|N |`Set UID without changing manufacturer block`
|`hf mf gen3blk `|N |`Overwrite manufacturer block`
|`hf mf gen3freeze `|N |`Perma lock UID changes. irreversible`
|`hf mf ginfo `|N |`Info about configuration of the card`
|`hf mf ggetblk `|N |`Read block from card`
|`hf mf gload `|N |`Load dump to card`
|`hf mf gsave `|N |`Save dump from card into file or emulator`