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Update cmdhficlass.c
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parent
047b94fbaa
commit
fbbfeaa977
1 changed files with 57 additions and 23 deletions
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@ -3005,7 +3005,7 @@ static int CmdHFiClass_TearBlock(const char *Cmd) {
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int tearoff_start = arg_get_int_def(ctx, 12, 5000);
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int tearoff_increment = arg_get_int_def(ctx, 13, 10);
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int tearoff_end = arg_get_int_def(ctx, 14, tearoff_start+tearoff_increment+500);
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int tearoff_end = arg_get_int_def(ctx, 14, tearoff_start + tearoff_increment + 500);
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int tearoff_loop = arg_get_int_def(ctx, 15, 1);
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int loop_count = 0;
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@ -3041,10 +3041,9 @@ static int CmdHFiClass_TearBlock(const char *Cmd) {
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keyType = 0x18; //credit key
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}
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//perform initial read here, repeat if failed or 00s
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uint8_t data_read_orig[8] = {0};
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uint8_t ff_data[8] = {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
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uint8_t ff_data[8] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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bool first_read = false;
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bool reread = false;
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bool erase_phase = false;
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@ -3062,11 +3061,26 @@ static int CmdHFiClass_TearBlock(const char *Cmd) {
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reread = false;
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}
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// turn off Device side debug messages
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uint8_t dbg_curr = DBG_NONE;
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if (getDeviceDebugLevel(&dbg_curr) != PM3_SUCCESS) {
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return PM3_EFAILED;
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}
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if (setDeviceDebugLevel(DBG_NONE, false) != PM3_SUCCESS) {
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return PM3_EFAILED;
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}
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PrintAndLogEx(INFO, "Starting tear off against block %u / 0x%02x", blockno, blockno);
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PrintAndLogEx(INFO, "");
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PrintAndLogEx(INFO, "Press " _GREEN_("<Enter>") " to abort");
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while (tearoff_start <= tearoff_end && read_ok == false) {
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if (kbd_enter_pressed()) {
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PrintAndLogEx(WARNING, "\naborted via keyboard.");
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return PM3_EOPABORTED;
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isok = PM3_EOPABORTED;
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goto out;
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}
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// set tear off trigger
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@ -3076,15 +3090,17 @@ static int CmdHFiClass_TearBlock(const char *Cmd) {
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.on = true,
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.off = false
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};
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int res = handle_tearoff(¶ms, verbose);
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if (res != PM3_SUCCESS) {
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PrintAndLogEx(WARNING, "Failed to configure tear off");
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return PM3_ESOFT;
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isok = PM3_ESOFT;
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goto out;
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}
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// write
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// don't check the return value. As a tear-off occurred, the write failed.
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PrintAndLogEx(INFO, "Tear off delay: "_YELLOW_("%d")"/"_YELLOW_("%d")" us", tearoff_start,tearoff_end);
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PrintAndLogEx(INFO, "Tear off delay: "_YELLOW_("%d")" / "_YELLOW_("%d")" us", tearoff_start, tearoff_end);
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iclass_write_block(blockno, data, mac, key, use_credit_key, elite, rawkey, use_replay, verbose, auth, shallow_mod);
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//read the data back
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@ -3092,11 +3108,15 @@ static int CmdHFiClass_TearBlock(const char *Cmd) {
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first_read = false;
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reread = false;
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bool decrease = false;
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while (first_read == false) {
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if (kbd_enter_pressed()) {
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PrintAndLogEx(WARNING, "\naborted via keyboard.");
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return PM3_EOPABORTED;
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isok = PM3_EOPABORTED;
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goto out;
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}
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res = iclass_read_block_ex(key, blockno, keyType, elite, rawkey, use_replay, verbose, auth, shallow_mod, data_read, false);
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if (res == PM3_SUCCESS && !reread) {
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if (memcmp(data_read, zeros, 8) == 0) {
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@ -3112,50 +3132,64 @@ static int CmdHFiClass_TearBlock(const char *Cmd) {
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decrease = true;
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}
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}
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if (decrease && tearoff_start > 0) { //if there was an error reading repeat the tearoff with the same delay
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tearoff_start -= tearoff_increment;
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}
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bool tear_success = true;
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bool expected_values = true;
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if(memcmp(data_read, data, 8) != 0) {
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if (memcmp(data_read, data, 8) != 0) {
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tear_success = false;
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}
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if ((tear_success == false) && (memcmp(data_read, zeros, 8) != 0) && (memcmp(data_read, data_read_orig, 8) != 0)) { //tearoff succeeded (partially)
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expected_values = false;
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if(memcmp(data_read, ff_data, 8) == 0 && memcmp(data_read_orig, ff_data, 8) != 0) {
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if (memcmp(data_read, ff_data, 8) == 0 && memcmp(data_read_orig, ff_data, 8) != 0) {
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erase_phase = true;
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PrintAndLogEx(SUCCESS, _BLUE_("Erase phase hit: ALL ONES"));
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PrintAndLogEx(INFO, "Original: %s", sprint_hex(data_read_orig, sizeof(data_read)));
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PrintAndLogEx(INFO, "Read: "_BLUE_("%s"), sprint_hex(data_read, sizeof(data_read)));
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}else{
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PrintAndLogEx(INFO, "Original: %s", sprint_hex_inrow(data_read_orig, sizeof(data_read)));
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PrintAndLogEx(INFO, "Read: "_BLUE_("%s"), sprint_hex_inrow(data_read, sizeof(data_read)));
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} else {
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if (erase_phase) {
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PrintAndLogEx(SUCCESS, _MAGENTA_("Tearing! Write Phase (post erase)"));
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PrintAndLogEx(INFO, "Original: %s", sprint_hex(data_read_orig, sizeof(data_read)));
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PrintAndLogEx(INFO, "Read: "_CYAN_("%s"), sprint_hex(data_read, sizeof(data_read)));
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}else{
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PrintAndLogEx(INFO, "Original: %s", sprint_hex_inrow(data_read_orig, sizeof(data_read)));
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PrintAndLogEx(INFO, "Read: "_CYAN_("%s"), sprint_hex_inrow(data_read, sizeof(data_read)));
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} else {
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PrintAndLogEx(SUCCESS, _CYAN_("Tearing!(unknown phase)!"));
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PrintAndLogEx(INFO, "Original: %s", sprint_hex(data_read_orig, sizeof(data_read)));
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PrintAndLogEx(INFO, "Read: "_CYAN_("%s"), sprint_hex(data_read, sizeof(data_read)));
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PrintAndLogEx(INFO, "Original: %s", sprint_hex_inrow(data_read_orig, sizeof(data_read)));
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PrintAndLogEx(INFO, "Read: "_CYAN_("%s"), sprint_hex_inrow(data_read, sizeof(data_read)));
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}
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}
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}else { //tearoff did not succeed
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PrintAndLogEx(INFO, "Read: %s", sprint_hex(data_read, sizeof(data_read)));
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PrintAndLogEx(INFO, "Expected: %s", sprint_hex(data, sizeof(data)));
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} else { //tearoff did not succeed
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PrintAndLogEx(INFO, "Read: %s", sprint_hex_inrow(data_read, sizeof(data_read)));
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PrintAndLogEx(INFO, "Expected: %s", sprint_hex_inrow(data, sizeof(data)));
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}
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if (tear_success) { //tearoff succeeded with expected values
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read_ok = true;
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tear_success = true;
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if(expected_values) {
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if (expected_values) {
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PrintAndLogEx(SUCCESS, _GREEN_("Expected values!"));
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}
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PrintAndLogEx(INFO, "Read: "_GREEN_("%s"), sprint_hex(data_read, sizeof(data_read)));
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PrintAndLogEx(INFO, "Read: "_GREEN_("%s"), sprint_hex_inrow(data_read, sizeof(data_read)));
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}
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loop_count++;
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if (loop_count == tearoff_loop){
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tearoff_start += tearoff_increment;
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loop_count = 0;
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}
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PrintAndLogEx(INFO, "---------------");
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PrintAndLogEx(INFO, "--------------------------");
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}
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out:
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if (setDeviceDebugLevel(verbose ? MAX(dbg_curr, DBG_INFO) : DBG_NONE, false) != PM3_SUCCESS) {
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return PM3_EFAILED;
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}
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PrintAndLogEx(NORMAL, "");
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return isok;
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