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Merge pull request #1099 from ikarus23/apdufind

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APDU finder: increment P1/P2 alternating & add Changelog entry.
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Iceman 2020-12-13 01:30:11 +01:00 • committed by GitHub
commit 859f0b4d84
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2 changed files with 58 additions and 54 deletions
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1
CHANGELOG.md
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@ -116,6 +116,7 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac
- Change, use system Whereami library if available (@doegox)
- Change, use system Zlib library if available (@doegox)
- Fix release version information (@doegox)
- Add `hf 14a apdufind` to find hidden APDUs (@iceman1001 & @ikarus23)
## [ice coffee.4.9237][2020-05-21]
- Updated documentation (@doegox, @iceman1001)

21
client/src/cmdhf14a.c
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@ -2133,7 +2133,7 @@ static int CmdHf14AFindapdu(const char *Cmd) {
CLIParserInit(&ctx, "hf 14a apdufind",
"Enumerate APDU's of ISO7816 protocol to find valid CLS/INS/P1P2 commands.\n"
"It loops all 256 possible values for each byte.\n"
"The loop oder is INS->P1->P2->CLA\n"
"The loop oder is INS -> P1/P2 (alternating) -> CLA\n"
"Tag must be on antenna before running.",
"hf 14a apdufind\n"
"hf 14a apdufind --cla 80\n"
@ -2193,11 +2193,11 @@ static int CmdHf14AFindapdu(const char *Cmd) {
PrintAndLogEx(INFO, "Press " _GREEN_("<Enter>") " to exit");
activate_field = false;
bool inc_p1 = true;
uint64_t t1 = msclock();
// Enumerate APDUs.
do {
do {
do {
do {
// Exit (was the Enter key pressed)?
@ -2224,7 +2224,7 @@ static int CmdHf14AFindapdu(const char *Cmd) {
uint16_t sw = get_sw(response, response_n);
bool command_with_le = false;
if (sw == 0x6700) {
PrintAndLogEx(INFO, "Got response for APDU: %02X%02X%02X%02X (%04x - %s)", cla, ins, p1, p2,
PrintAndLogEx(INFO, "Got response for APDU: %02X%02X%02X%02X (%04X - %s)", cla, ins, p1, p2,
sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
PrintAndLogEx(INFO, "Resending current command with Le = 0x0100 (extended length APDU)");
uint8_t command2[7] = {cla, ins, p1, p2, 0x00};
@ -2244,25 +2244,28 @@ static int CmdHf14AFindapdu(const char *Cmd) {
sw != 0x6d00
) {
if (command_with_le) {
PrintAndLogEx(INFO, "Got response for APDU: %02X%02X%02X%02X00 (%04x - %s)", cla, ins, p1, p2,
PrintAndLogEx(INFO, "Got response for APDU: %02X%02X%02X%02X00 (%04X - %s)", cla, ins, p1, p2,
sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
} else {
PrintAndLogEx(INFO, "Got response for APDU: %02X%02X%02X%02X (%04x - %s)", cla, ins, p1, p2,
PrintAndLogEx(INFO, "Got response for APDU: %02X%02X%02X%02X (%04X - %s)", cla, ins, p1, p2,
sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
}
// Show response data.
if (response_n > 2) {
PrintAndLogEx(INFO, "Response data is: %s | %s", sprint_hex_inrow(response, response_n - 2),
PrintAndLogEx(SUCCESS, "Response data is: %s | %s", sprint_hex_inrow(response, response_n - 2),
sprint_ascii(response, response_n - 2));
}
}
} while (++ins != ins_arg[0]);
// Increment P1/P2 in an alternating fashion.
if (inc_p1) {
p1++;
PrintAndLogEx(INFO, "Status: [ CLA " _GREEN_("%02X") " INS " _GREEN_("%02X") " P1 " _GREEN_("%02X") " P2 " _GREEN_("%02X") " ]", cla, ins, p1, p2);
} while (p1 != p1_arg[0]);
} else {
p2++;
}
inc_p1 = !inc_p1;
PrintAndLogEx(INFO, "Status: [ CLA " _GREEN_("%02X") " INS " _GREEN_("%02X") " P1 " _GREEN_("%02X") " P2 " _GREEN_("%02X") " ]", cla, ins, p1, p2);
} while (p2 != p2_arg[0]);
} while (p1 != p1_arg[0] || p2 != p2_arg[0]);
cla++;
PrintAndLogEx(INFO, "Status: [ CLA " _GREEN_("%02X") " INS " _GREEN_("%02X") " P1 " _GREEN_("%02X") " P2 " _GREEN_("%02X") " ]", cla, ins, p1, p2);
} while (cla != cla_arg[0]);