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add continuous mode

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Grayson Martin 2023-07-08 16:59:24 -05:00
commit 70541e9450
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GPG key ID: 4914C62F2696A273
1 changed files with 24 additions and 12 deletions
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36
client/src/cmdvas.c
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@ -326,7 +326,6 @@ static int DecryptVASCryptogram(uint8_t *pidHash, uint8_t *cryptogram, size_t cr
for (int i = 0; i < 4; ++i) {
*timestamp = (*timestamp << 8) | decryptedData[i];
}
*timestamp = *timestamp + 978328800; // Unix offset for Jan 1, 2001
return PM3_SUCCESS;
}
@ -398,6 +397,7 @@ static int CmdVASReader(const char *Cmd) {
arg_str0("p", NULL, "<pid>", "pass type id"),
arg_str0("k", NULL, "<key>", "path to terminal private key"),
arg_str0(NULL, "url", "<url>", "a URL to provide to the mobile device"),
arg_lit0("@", NULL, "continuous mode"),
arg_lit0("v", "verbose", "log additional information"),
arg_param_end
};
@ -442,23 +442,35 @@ static int CmdVASReader(const char *Cmd) {
url = urlArg->sval[0];
}
bool verbose = arg_get_lit(ctx, 4);
uint8_t cryptogram[120] = {0};
size_t cryptogramLen = 0;
bool continuous = arg_get_lit(ctx, 4);
bool verbose = arg_get_lit(ctx, 5);
PrintAndLogEx(INFO, "Requesting pass type id: %s", sprint_ascii((uint8_t *) passTypeIdArg->sval[0], passTypeIdLen));
if (VASReader(passTypeIdLen > 0 ? pidHash : NULL, url, urlLen, cryptogram, &cryptogramLen, verbose) != PM3_SUCCESS) {
if (continuous) {
PrintAndLogEx(INFO, "Press " _GREEN_("Enter") " to exit");
}
uint8_t cryptogram[120] = {0};
size_t cryptogramLen = 0;
int readerErr = -1;
do {
readerErr = VASReader(passTypeIdLen > 0 ? pidHash : NULL, url, urlLen, cryptogram, &cryptogramLen, verbose);
if (readerErr == 0 || kbd_enter_pressed()) {
break;
}
msleep(200);
} while (continuous);
if (readerErr) {
CLIParserFree(ctx);
mbedtls_ecp_keypair_free(&privKey);
return PM3_EINVARG;
}
if (verbose) {
PrintAndLogEx(INFO, "Got cryptogram response: %s", sprint_hex(cryptogram, cryptogramLen));
}
uint8_t message[64] = {0};
size_t messageLen = 0;
uint32_t timestamp = 0;
@ -470,7 +482,7 @@ static int CmdVASReader(const char *Cmd) {
}
PrintAndLogEx(SUCCESS, "Message: %s", sprint_ascii(message, messageLen));
PrintAndLogEx(SUCCESS, "Timestamp: %d", timestamp);
PrintAndLogEx(SUCCESS, "Timestamp: %d (secs since Jan 1, 2001)", timestamp);
CLIParserFree(ctx);
mbedtls_ecp_keypair_free(&privKey);
@ -538,7 +550,7 @@ static int CmdVASDecrypt(const char *Cmd) {
}
PrintAndLogEx(SUCCESS, "Message: %s", sprint_ascii(message, messageLen));
PrintAndLogEx(SUCCESS, "Timestamp: %d", timestamp);
PrintAndLogEx(SUCCESS, "Timestamp: %d (secs since Jan 1, 2001)", timestamp);
CLIParserFree(ctx);
mbedtls_ecp_keypair_free(&privKey);