git.zerfleddert.de Git - proxmark3-svn/blob - client/loclass/hash1_brute.c

   1 #include <stdio.h>
   2 #include "cipherutils.h"
   3 #include <stdint.h>
   4 #include <stdbool.h>
   5 #include <string.h>
   6 #include <unistd.h>
   7 #include <ctype.h>
   8 #include "elite_crack.h"
   9
  10 void calc_score(uint8_t* csn, uint8_t* k)
  11 {
  12     uint8_t score =0 ;
  13     uint8_t i;
  14     uint8_t goodvals[16] = {0};
  15     uint8_t uniq_vals[8] = {0};
  16     memset(goodvals, 0x00, 16);
  17     memset(uniq_vals, 0x00, 8);
  18     uint8_t badval = 0;
  19     int badscore =0;
  20     for(i=0; i < 8 ; i++)
  21     {
  22         if(k[i] == 0x01) continue;
  23         if(k[i] == 0x00) continue;
  24         if(k[i] == 0x45) continue;
  25         if(k[i] < 16){
  26             goodvals[k[i]] = 1;
  27         }
  28 //        if(k[i] ==9 || k[i]==2){
  29 //            goodvals[k[i]] = 1;
  30 //        }
  31
  32         else if(k[i]>=16){
  33             badscore++;
  34             badval = k[i];
  35         }
  36     }
  37     for(i =0; i < 16; i++)
  38     {
  39         if(goodvals[i])
  40         {
  41             uniq_vals[score] = i;
  42             score +=1;
  43         }
  44     }
  45     if(score >=2 && badscore < 2)
  46     {
  47         printf("CSN\t%02x%02x%02x%02x%02x%02x%02x%02x\t%02x %02x %02x %02x %02x %02x %02x %02x\t"
  48                ,csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]
  49                 ,k[0],k[1],k[2],k[3],k[4],k[5],k[6],k[7]
  50                 );
  51         for(i =0 ; i < score; i++)
  52         {
  53             printf("%d,", uniq_vals[i]);
  54         }
  55         printf("\tbadscore: %d (%02x)", badscore, badval);
  56         printf("\r\n");
  57
  58     }
  59
  60 }
  61
  62 void brute_hash1(){
  63     uint8_t csn[8] = {0,0,0,0,0xf7,0xff,0x12,0xe0};
  64     uint8_t k[8]= {0,0,0,0,0,0,0,0};
  65     uint16_t a,b,c,d;
  66     uint8_t testcsn[8] ={0x00,0x0d,0x0f,0xfd,0xf7,0xff,0x12,0xe0} ;
  67     uint8_t testkey[8] ={0x05 ,0x01 ,0x00 ,0x10 ,0x45 ,0x08 ,0x45,0x56} ;
  68     calc_score(testcsn,testkey);
  69     printf("Brute forcing hashones\n");
  70     //exit(1);
  71     for(a=0;a < 256;a++)
  72     {
  73         //if(a > 0)printf("%d/256 done...\n", a);
  74         for(b=0;b < 256 ; b++)
  75             for(c=0;c < 256;c++)
  76                for(d=0;d < 256;d++)
  77                 {
  78                     csn[0] = a;
  79                     csn[1] = b;
  80                     csn[2] = c;
  81                     csn[3] = d;
  82                     csn[4] = 0xf7;
  83                     csn[5] = 0xff;
  84                     csn[6] = 0x12;
  85                     csn[7] = 0xe0;
  86                     hash1(csn, k);
  87                     calc_score(csn,k);
  88                }
  89     }
  90
  91 }
  92