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analyze demodbuff - fill demodbuffer with binary from client

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This commit is contained in:
iceman1001 2019-10-11 11:26:14 +02:00
parent f5d0fdf2a1
commit 9c82f84fa7
1 changed files with 53 additions and 6 deletions
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59
client/cmdanalyse.c
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@ -12,7 +12,7 @@
#include <stdlib.h> // size_t
#include <string.h>
#include <ctype.h> // tolower
#include <stdio.h> // printf
#include "commonutil.h" // reflect...
#include "comms.h" // clearCommandBuffer
#include "cmdparser.h" // command_t
@ -21,6 +21,7 @@
#include "crc16.h" // crc16 ccitt
#include "tea.h"
#include "legic_prng.h"
#include "cmddata.h" // demodbuffer
static int CmdHelp(const char *Cmd);
@ -36,7 +37,7 @@ static int usage_analyse_lcr(void) {
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " analyse lcr 04008064BA");
PrintAndLogEx(NORMAL, "expected output: Target (BA) requires final LRC XOR byte value: 5A");
return 0;
return PM3_SUCCESS;
}
static int usage_analyse_checksum(void) {
PrintAndLogEx(NORMAL, "The bytes will be added with eachother and than limited with the applied mask");
@ -52,7 +53,7 @@ static int usage_analyse_checksum(void) {
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " analyse chksum b 137AF00A0A0D m FF");
PrintAndLogEx(NORMAL, "expected output: 0x61");
return 0;
return PM3_SUCCESS;
}
static int usage_analyse_crc(void) {
PrintAndLogEx(NORMAL, "A stub method to test different crc implementations inside the PM3 sourcecode. Just because you figured out the poly, doesn't mean you get the desired output");
@ -64,7 +65,7 @@ static int usage_analyse_crc(void) {
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " analyse crc 137AF00A0A0D");
return 0;
return PM3_SUCCESS;
}
static int usage_analyse_nuid(void) {
PrintAndLogEx(NORMAL, "Generate 4byte NUID from 7byte UID");
@ -76,7 +77,7 @@ static int usage_analyse_nuid(void) {
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " analyse nuid 11223344556677");
return 0;
return PM3_SUCCESS;
}
static int usage_analyse_a(void) {
PrintAndLogEx(NORMAL, "Iceman's personal garbage test command");
@ -88,7 +89,19 @@ static int usage_analyse_a(void) {
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " analyse a d 137AF00A0A0D");
return 0;
return PM3_SUCCESS;
}
static int usage_analyse_demodbuffer(void) {
PrintAndLogEx(NORMAL, "loads a binary string into demod buffer");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: analyse demodbuff [h] <binarystring>");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h This help");
PrintAndLogEx(NORMAL, " <binarystring> Binary string to load");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " analyse demodbuff 0011101001001011");
return PM3_SUCCESS;
}
static uint8_t calculateLRC(uint8_t *bytes, uint8_t len) {
@ -878,6 +891,39 @@ static int CmdAnalyseNuid(const char *Cmd) {
PrintAndLogEx(NORMAL, "NUID | %s \n", sprint_hex(nuid, 4));
return 0;
}
static int CmdAnalyseDemodBuffer(const char *Cmd) {
char cmdp = tolower(param_getchar(Cmd, 0));
if (strlen(Cmd) == 0 || cmdp == 'h') return usage_analyse_demodbuffer();
int bg = 0, en = 0;
if (param_getptr(Cmd, &bg, &en, 0))
return usage_analyse_demodbuffer();
int len = MIN( (en- bg + 1), MAX_DEMOD_BUF_LEN);
// add 1 for null terminator.
uint8_t *data = calloc(len + 1, sizeof(uint8_t));
if (!data) return PM3_EMALLOC;
for(int i = 0; bg <= en; bg++ , i++) {
char c = Cmd[bg];
if (c == '1')
DemodBuffer[i] = 1;
if (c == '0')
DemodBuffer[i] = 0;
printf("%c", c);
}
printf("\n");
DemodBufferLen = len;
free(data);
return PM3_SUCCESS;
}
static command_t CommandTable[] = {
{"help", CmdHelp, AlwaysAvailable, "This help"},
{"lcr", CmdAnalyseLCR, AlwaysAvailable, "Generate final byte for XOR LRC"},
@ -888,6 +934,7 @@ static command_t CommandTable[] = {
{"lfsr", CmdAnalyseLfsr, AlwaysAvailable, "LFSR tests"},
{"a", CmdAnalyseA, AlwaysAvailable, "num bits test"},
{"nuid", CmdAnalyseNuid, AlwaysAvailable, "create NUID from 7byte UID"},
{"demodbuff", CmdAnalyseDemodBuffer, AlwaysAvailable, "Load binary string to demodbuffer"},
{NULL, NULL, NULL, NULL}
};