#include <sys/stat.h>
#include "iso14443crc.h" // Can also be used for iClass, using 0xE012 as CRC-type
#include "data.h"
-//#include "proxusb.h"
#include "proxmark3.h"
#include "ui.h"
#include "cmdparser.h"
return res & 1;
}
-void explain(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
-{
-
- switch(cmd[0])
- {
- case 0x0a: snprintf(exp,size,"WUP"); break;
- case 0x0f: snprintf(exp,size,"SOF"); break;
- case 0x0c: snprintf(exp,size,"Read config"); break;
- case 0x81: snprintf(exp,size,"SELECT"); break;
- case 0x88: snprintf(exp,size,"Read E-purse (CC)"); break;
- case 0x05: snprintf(exp,size,"Reader challenge"); break;
- case 0x00: snprintf(exp,size,"End"); break;
- default: snprintf(exp,size,"?"); break;
- }
- return;
-}
-
int CmdHFiClassList(const char *Cmd)
{
- bool ShowWaitCycles = false;
- char param = param_getchar(Cmd, 0);
-
- if (param != 0) {
- PrintAndLog("List data in trace buffer.");
- PrintAndLog("Usage: hf iclass list");
- PrintAndLog("h - help");
- PrintAndLog("sample: hf iclass list");
- return 0;
- }
-
-// for the time being. Need better Bigbuf handling.
-#define TRACE_SIZE 3000
-
- uint8_t trace[TRACE_SIZE];
- GetFromBigBuf(trace, TRACE_SIZE, 0);
- WaitForResponse(CMD_ACK, NULL);
-
- PrintAndLog("Recorded Activity");
- PrintAndLog("");
- PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
- PrintAndLog("All times are in carrier periods (1/13.56Mhz)");
- PrintAndLog("");
- PrintAndLog(" Start | End | Src | Data (! denotes parity error) | CRC | Explanation|");
- PrintAndLog("-----------|-----------|-----|-------------------------------------------------------------------------------------");
-
- uint16_t tracepos = 0;
- uint16_t duration;
- uint16_t data_len;
- uint16_t parity_len;
- bool isResponse;
- uint32_t timestamp;
- uint32_t first_timestamp;
- uint32_t EndOfTransmissionTimestamp;
- char explanation[20] = {0};
- for (;;) {
-
- if(tracepos >= TRACE_SIZE) {
- break;
- }
-
- timestamp = *((uint32_t *)(trace + tracepos));
- if(tracepos == 0) {
- first_timestamp = timestamp;
- }
-
- // Break and stick with current result if buffer was not completely full
- if (timestamp == 0x44444444) break;
-
- tracepos += 4;
- duration = *((uint16_t *)(trace + tracepos));
- tracepos += 2;
- data_len = *((uint16_t *)(trace + tracepos));
- tracepos += 2;
-
- if (data_len & 0x8000) {
- data_len &= 0x7fff;
- isResponse = true;
- } else {
- isResponse = false;
- }
-
- parity_len = (data_len-1)/8 + 1;
-
- if (tracepos + data_len + parity_len >= TRACE_SIZE) {
- break;
- }
-
- uint8_t *frame = trace + tracepos;
- tracepos += data_len;
- uint8_t *parityBytes = trace + tracepos;
- tracepos += parity_len;
-
- char line[16][110];
- for (int j = 0; j < data_len; j++) {
- int oddparity = 0x01;
- int k;
-
- for (k=0;k<8;k++) {
- oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
- }
-
- uint8_t parityBits = parityBytes[j>>3];
- if (isResponse && (oddparity != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
- sprintf(line[j/16]+((j%16)*4), "%02x! ", frame[j]);
- } else {
- sprintf(line[j/16]+((j%16)*4), "%02x ", frame[j]);
- }
-
- }
-
- char *crc = " ";
- if (data_len > 2) {
- uint8_t b1, b2;
- if(!isResponse && data_len == 4 ) {
- // Rough guess that this is a command from the reader
- // For iClass the command byte is not part of the CRC
- ComputeCrc14443(CRC_ICLASS, &frame[1], data_len-3, &b1, &b2);
- if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
- crc = "!crc";
- }
- }
- else {
- // For other data.. CRC might not be applicable (UPDATE commands etc.)
- ComputeCrc14443(CRC_ICLASS, frame, data_len-2, &b1, &b2);
- if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
- crc = "!crc";
- }
- }
- }
-
- EndOfTransmissionTimestamp = timestamp + duration;
- explain(explanation,sizeof(explanation),frame,data_len);
- int num_lines = (data_len - 1)/16 + 1;
- for (int j = 0; j < num_lines; j++) {
- if (j == 0) {
- PrintAndLog(" %9d | %9d | %s | %-64s| %s| %s",
- (timestamp - first_timestamp),
- (EndOfTransmissionTimestamp - first_timestamp),
- (isResponse ? "Tag" : "Rdr"),
- line[j],
- (j == num_lines-1)?crc:" ",
- explanation);
- } else {
- PrintAndLog(" | | | %-64s| %s",
- line[j],
- (j == num_lines-1)?crc:" ");
- }
- }
-
- bool next_isResponse = *((uint16_t *)(trace + tracepos + 6)) & 0x8000;
-
- if (ShowWaitCycles && !isResponse && next_isResponse) {
- uint32_t next_timestamp = *((uint32_t *)(trace + tracepos));
- if (next_timestamp != 0x44444444) {
- PrintAndLog(" %9d | %9d | %s | fdt (Frame Delay Time): %d",
- (EndOfTransmissionTimestamp - first_timestamp),
- (next_timestamp - first_timestamp),
- " ",
- (next_timestamp - EndOfTransmissionTimestamp));
- }
- }
-
- }
-
+ PrintAndLog("Deprecated command, use 'hf list iclass' instead");
return 0;
}
uint8_t key_sel[8] = {0};
uint8_t key_sel_p[8] = { 0 };
- //HACK -- Below is for testing without access to a tag
- uint8_t fake_dummy_test = false;
- if(fake_dummy_test)
- {
- uint8_t xdata[16] = {0x01,0x02,0x03,0x04,0xF7,0xFF,0x12,0xE0, //CSN from http://www.proxmark.org/forum/viewtopic.php?pid=11230#p11230
- 0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}; // Just a random CC. Would be good to add a real testcase here
- memcpy(resp.d.asBytes,xdata, 16);
- resp.arg[0] = 2;
- }
-
- //End hack
-
-
UsbCommand c = {CMD_READER_ICLASS, {0}};
- c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE;
- if(!fake_dummy_test)
- SendCommand(&c);
+ c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE| FLAG_ICLASS_READER_GET_CC;
+ SendCommand(&c);
- if (fake_dummy_test || WaitForResponseTimeout(CMD_ACK,&resp,4500)) {
- uint8_t isOK = resp.arg[0] & 0xff;
- uint8_t * data = resp.d.asBytes;
+ if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+ {
+ PrintAndLog("Command execute timeout");
+ return 0;
+ }
- memcpy(CSN,data,8);
- memcpy(CCNR,data+8,8);
+ uint8_t isOK = resp.arg[0] & 0xff;
+ uint8_t * data = resp.d.asBytes;
- PrintAndLog("isOk:%02x", isOK);
+ memcpy(CSN,data,8);
+ memcpy(CCNR,data+8,8);
- if(isOK > 0)
- {
- PrintAndLog("CSN: %s",sprint_hex(CSN,8));
- }
- if(isOK > 1)
- {
- if(elite)
- {
- //Get the key index (hash1)
- uint8_t key_index[8] = {0};
-
- hash1(CSN, key_index);
- printvar("hash1", key_index,8);
- for(i = 0; i < 8 ; i++)
- key_sel[i] = keytable[key_index[i]] & 0xFF;
- PrintAndLog("Pre-fortified 'permuted' HS key that would be needed by an iclass reader to talk to above CSN:");
- printvar("k_sel", key_sel,8);
- //Permute from iclass format to standard format
- permutekey_rev(key_sel,key_sel_p);
- used_key = key_sel_p;
- }else{
- //Perhaps this should also be permuted to std format?
- // Something like the code below? I have no std system
- // to test this with /Martin
+ PrintAndLog("isOk:%02x", isOK);
- //uint8_t key_sel_p[8] = { 0 };
- //permutekey_rev(KEY,key_sel_p);
- //used_key = key_sel_p;
+ if(isOK > 0)
+ {
+ PrintAndLog("CSN: %s",sprint_hex(CSN,8));
+ }
+ if(isOK <= 1){
+ PrintAndLog("Failed to obtain CC! Aborting");
+ return 0;
+ }
+ //Status 2 or higher
- used_key = KEY;
+ if(elite)
+ {
+ //Get the key index (hash1)
+ uint8_t key_index[8] = {0};
+
+ hash1(CSN, key_index);
+ printvar("hash1", key_index,8);
+ for(i = 0; i < 8 ; i++)
+ key_sel[i] = keytable[key_index[i]] & 0xFF;
+ PrintAndLog("Pre-fortified 'permuted' HS key that would be needed by an iclass reader to talk to above CSN:");
+ printvar("k_sel", key_sel,8);
+ //Permute from iclass format to standard format
+ permutekey_rev(key_sel,key_sel_p);
+ used_key = key_sel_p;
+ }else{
+ used_key = KEY;
+ }
- }
+ PrintAndLog("Pre-fortified key that would be needed by the OmniKey reader to talk to above CSN:");
+ printvar("Used key",used_key,8);
+ diversifyKey(CSN,used_key, div_key);
+ PrintAndLog("Hash0, a.k.a diversified key, that is computed using Ksel and stored in the card (Block 3):");
+ printvar("Div key", div_key, 8);
+ printvar("CC_NR:",CCNR,12);
+ doMAC(CCNR,12,div_key, MAC);
+ printvar("MAC", MAC, 4);
+
+ uint8_t iclass_data[32000] = {0};
+ uint8_t iclass_datalen = 0;
+ uint8_t iclass_blocksFailed = 0;//Set to 1 if dump was incomplete
+
+ UsbCommand d = {CMD_READER_ICLASS_REPLAY, {readerType}};
+ memcpy(d.d.asBytes, MAC, 4);
+ clearCommandBuffer();
+ SendCommand(&d);
+ PrintAndLog("Waiting for device to dump data. Press button on device and key on keyboard to abort...");
+ while (true) {
+ printf(".");
+ if (ukbhit()) {
+ getchar();
+ printf("\naborted via keyboard!\n");
+ break;
+ }
+ if(WaitForResponseTimeout(CMD_ACK,&resp,4500))
+ {
+ uint64_t dataLength = resp.arg[0];
+ iclass_blocksFailed |= resp.arg[1];
+
+ if(dataLength > 0)
+ {
+ memcpy(iclass_data, resp.d.asBytes,dataLength);
+ iclass_datalen += dataLength;
+ }else
+ {//Last transfer, datalength 0 means the dump is finished
+ PrintAndLog("Dumped %d bytes of data from tag. ", iclass_datalen);
+ if(iclass_blocksFailed)
+ {
+ PrintAndLog("OBS! Some blocks failed to be dumped correctly!");
+ }
+ if(iclass_datalen > 0)
+ {
+ char filename[100] = {0};
+ //create a preferred filename
+ snprintf(filename, 100,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x",
+ CSN[0],CSN[1],CSN[2],CSN[3],
+ CSN[4],CSN[5],CSN[6],CSN[7]);
+ saveFile(filename,"bin",iclass_data, iclass_datalen );
+
+ }
+ //Aaaand we're finished
+ return 0;
+ }
+ }
+ }
- PrintAndLog("Pre-fortified key that would be needed by the OmniKey reader to talk to above CSN:");
- printvar("Used key",used_key,8);
- diversifyKey(CSN,used_key, div_key);
- PrintAndLog("Hash0, a.k.a diversified key, that is computed using Ksel and stored in the card (Block 3):");
- printvar("Div key", div_key, 8);
- printvar("CC_NR:",CCNR,12);
- doMAC(CCNR,12,div_key, MAC);
- printvar("MAC", MAC, 4);
-
- UsbCommand d = {CMD_READER_ICLASS_REPLAY, {readerType}};
- memcpy(d.d.asBytes, MAC, 4);
- if(!fake_dummy_test) SendCommand(&d);
-
- }else{
- PrintAndLog("Failed to obtain CC! Aborting");
- }
- } else {
- PrintAndLog("Command execute timeout");
- }
return 0;
}
}
return 0;
}
+int CmdHFiClass_loclass(const char *Cmd)
+{
+ char opt = param_getchar(Cmd, 0);
+
+ if (strlen(Cmd)<1 || opt == 'h') {
+ PrintAndLog("Usage: hf iclass loclass [options]");
+ PrintAndLog("Options:");
+ PrintAndLog("h Show this help");
+ PrintAndLog("t Perform self-test");
+ PrintAndLog("f <filename> Bruteforce iclass dumpfile");
+ PrintAndLog(" An iclass dumpfile is assumed to consist of an arbitrary number of");
+ PrintAndLog(" malicious CSNs, and their protocol responses");
+ PrintAndLog(" The the binary format of the file is expected to be as follows: ");
+ PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>");
+ PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>");
+ PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>");
+ PrintAndLog(" ... totalling N*24 bytes");
+ return 0;
+ }
+ char fileName[255] = {0};
+ if(opt == 'f')
+ {
+ if(param_getstr(Cmd, 1, fileName) > 0)
+ {
+ return bruteforceFileNoKeys(fileName);
+ }else
+ {
+ PrintAndLog("You must specify a filename");
+ }
+ }
+ else if(opt == 't')
+ {
+ int errors = testCipherUtils();
+ errors += testMAC();
+ errors += doKeyTests(0);
+ errors += testElite();
+ if(errors)
+ {
+ prnlog("OBS! There were errors!!!");
+ }
+ return errors;
+ }
+ return 0;
+}
static command_t CommandTable[] =
{
- {"help", CmdHelp, 1, "This help"},
- {"list", CmdHFiClassList, 0, "List iClass history"},
- {"snoop", CmdHFiClassSnoop, 0, "Eavesdrop iClass communication"},
- {"sim", CmdHFiClassSim, 0, "Simulate iClass tag"},
- {"reader",CmdHFiClassReader, 0, "Read an iClass tag"},
- {"replay",CmdHFiClassReader_Replay, 0, "Read an iClass tag via Reply Attack"},
- {"dump", CmdHFiClassReader_Dump, 0, "Authenticate and Dump iClass tag"},
- {"write", CmdHFiClass_iso14443A_write, 0, "Authenticate and Write iClass block"},
- {NULL, NULL, 0, NULL}
+ {"help", CmdHelp, 1, "This help"},
+ {"list", CmdHFiClassList, 0, "[Deprecated] List iClass history"},
+ {"snoop", CmdHFiClassSnoop, 0, "Eavesdrop iClass communication"},
+ {"sim", CmdHFiClassSim, 0, "Simulate iClass tag"},
+ {"reader",CmdHFiClassReader, 0, "Read an iClass tag"},
+ {"replay",CmdHFiClassReader_Replay, 0, "Read an iClass tag via Reply Attack"},
+ {"dump", CmdHFiClassReader_Dump, 0, "Authenticate and Dump iClass tag"},
+ {"write", CmdHFiClass_iso14443A_write, 0, "Authenticate and Write iClass block"},
+ {"loclass", CmdHFiClass_loclass, 1, "Use loclass to perform bruteforce of reader attack dump"},
+ {NULL, NULL, 0, NULL}
};
int CmdHFiClass(const char *Cmd)
projects / proxmark3-svn / blobdiff