hf epa - now use cliparser
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tcprst
@@ -15,7 +15,7 @@
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#include <inttypes.h>
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#include <stdlib.h>
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#include <ctype.h> // tolower
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#include "cliparser.h"
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#include "cmdparser.h" // command_t
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#include "commonutil.h" // ARRAYLEN
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#include "comms.h" // clearCommandBuffer
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@@ -24,35 +24,28 @@
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static int CmdHelp(const char *Cmd);
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static int usage_epa_collect(void) {
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PrintAndLogEx(NORMAL, "Tries to collect nonces when doing part of PACE protocol.\n"
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"\n"
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"Usage: hf epa cnonces <m> <n> <d>\n"
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"Options:\n"
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"\t<m> nonce size\n"
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"\t<n> number of nonces to collect\n"
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"\t<d> delay between\n"
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"\n"
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"Example:\n"
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_YELLOW_("\thf epa cnonces 4 4 1")
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);
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return PM3_SUCCESS;
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}
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// Perform (part of) the PACE protocol
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static int CmdHFEPACollectPACENonces(const char *Cmd) {
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CLIParserContext *ctx;
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CLIParserInit(&ctx, "hf epa cnonces",
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"Tries to collect nonces when doing part of PACE protocol.",
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"hf epa cnonces --size 4 --num 4 --delay 1");
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char cmdp = tolower(param_getchar(Cmd, 0));
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if (cmdp == 'h') return usage_epa_collect();
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void *argtable[] = {
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arg_param_begin,
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arg_int1(NULL, "size", "<dec>", "nonce size"),
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arg_int1(NULL, "num", "<dec>", "number of nonces to collect"),
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arg_int1("d", "delay", "<dec>", "delay between attempts"),
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arg_param_end
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};
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CLIExecWithReturn(ctx, Cmd, argtable, false);
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// requested nonce size
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uint32_t m = 0;
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// requested number of Nonces
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uint32_t n = 0;
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// delay between requests
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uint32_t d = 0;
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sscanf(Cmd, "%u %u %u", &m, &n, &d);
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int m = arg_get_int_def(ctx, 1, 0);
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int n = arg_get_int_def(ctx, 2, 0);
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int d = arg_get_int_def(ctx, 3, 0);
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CLIParserFree(ctx);
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// values are expected to be > 0
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m = m > 0 ? m : 1;
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@@ -99,54 +92,51 @@ static int CmdHFEPACollectPACENonces(const char *Cmd) {
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// perform the PACE protocol by replaying APDUs
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static int CmdHFEPAPACEReplay(const char *Cmd) {
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// the 4 APDUs which are replayed + their lengths
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uint8_t msesa_apdu[41] = {0}, gn_apdu[8] = {0}, map_apdu[75] = {0};
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uint8_t pka_apdu[75] = {0}, ma_apdu[18] = {0}, apdu_lengths[5] = {0};
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CLIParserContext *ctx;
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CLIParserInit(&ctx, "hf epa preplay",
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"Perform PACE protocol by replaying given APDUs",
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"hf epa preplay --mse 0022C1A4 --get 1068000000 --map 1086000002 --pka 1234ABCDEF --ma 1A2B3C4D");
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void *argtable[] = {
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arg_param_begin,
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arg_str1(NULL, "mse", "<hex>", "msesa APDU"),
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arg_str1(NULL, "get", "<hex>", "gn APDU"),
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arg_str1(NULL, "map", "<hex>", "map APDU"),
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arg_str1(NULL, "pka", "<hex>", "pka APDU"),
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arg_str1(NULL, "ma", "<hex>", "ma APDU"),
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arg_param_end
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};
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CLIExecWithReturn(ctx, Cmd, argtable, false);
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int msesa_len = 0;
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uint8_t msesa_apdu[41] = {0};
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CLIGetHexWithReturn(ctx, 1, msesa_apdu, &msesa_len);
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int gn_len = 0;
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uint8_t gn_apdu[8] = {0};
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CLIGetHexWithReturn(ctx, 2, gn_apdu, &gn_len);
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int map_len = 0;
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uint8_t map_apdu[75] = {0};
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CLIGetHexWithReturn(ctx, 3, map_apdu, &map_len);
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int pka_len = 0;
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uint8_t pka_apdu[75] = {0};
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CLIGetHexWithReturn(ctx, 4, pka_apdu, &pka_len);
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int ma_len = 0;
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uint8_t ma_apdu[18] = {0};
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CLIGetHexWithReturn(ctx, 5, ma_apdu, &ma_len);
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CLIParserFree(ctx);
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uint8_t apdu_lengths[5] = {msesa_len, gn_len, map_len, pka_len, ma_len};
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// pointers to the arrays to be able to iterate
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uint8_t *apdus[] = {msesa_apdu, gn_apdu, map_apdu, pka_apdu, ma_apdu};
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// usage message
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static const char *usage_msg =
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"Please specify 5 APDUs separated by spaces. "
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"Example:\n preplay 0022C1A4 1068000000 1086000002 1234ABCDEF 1A2B3C4D";
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// Proxmark response
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PacketResponseNG resp;
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int skip = 0, skip_add = 0, scan_return;
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// for each APDU
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for (int i = 0; i < ARRAYLEN(apdu_lengths); i++) {
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// scan to next space or end of string
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while (Cmd[skip] != ' ' && Cmd[skip] != '\0') {
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// convert
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scan_return = sscanf(Cmd + skip,
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"%2" SCNx8 "%n",
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apdus[i] + apdu_lengths[i],
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&skip_add
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);
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if (scan_return < 1) {
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PrintAndLogEx(INFO, (char *)usage_msg);
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PrintAndLogEx(WARNING, "Not enough APDUs! Try again!");
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return PM3_SUCCESS;
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}
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skip += skip_add;
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apdu_lengths[i]++;
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}
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// break on EOF
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if (Cmd[skip] == '\0') {
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if (i < ARRAYLEN(apdu_lengths) - 1) {
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PrintAndLogEx(INFO, (char *)usage_msg);
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return PM3_SUCCESS;
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}
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break;
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}
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// skip the space
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skip++;
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}
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// transfer the APDUs to the Proxmark
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uint8_t data[PM3_CMD_DATA_SIZE];
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// fast push mode
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@@ -205,8 +195,8 @@ static int CmdHFEPAPACEReplay(const char *Cmd) {
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static command_t CommandTable[] = {
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{"help", CmdHelp, AlwaysAvailable, "This help"},
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{"cnonces", CmdHFEPACollectPACENonces, IfPm3Iso14443, "<m> <n> <d> Acquire n>0 encrypted PACE nonces of size m>0 with d sec pauses"},
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{"preplay", CmdHFEPAPACEReplay, IfPm3Iso14443, "<mse> <get> <map> <pka> <ma> Perform PACE protocol by replaying given APDUs"},
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{"cnonces", CmdHFEPACollectPACENonces, IfPm3Iso14443, "Acquire encrypted PACE nonces of specific size"},
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{"preplay", CmdHFEPAPACEReplay, IfPm3Iso14443, "Perform PACE protocol by replaying given APDUs"},
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{NULL, NULL, NULL, NULL}
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};
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