X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/b69947c24598e870b0f08d661e10e390330e38a6..6c38d4c96fa96c871c739718081caa5e56ce968a:/client/nonce2key/nonce2key.c?ds=sidebyside diff --git a/client/nonce2key/nonce2key.c b/client/nonce2key/nonce2key.c index 54cb0d2a..2d0590df 100644 --- a/client/nonce2key/nonce2key.c +++ b/client/nonce2key/nonce2key.c @@ -9,147 +9,51 @@ //----------------------------------------------------------------------------- // MIFARE Darkside hack //----------------------------------------------------------------------------- - -#define __STDC_FORMAT_MACROS -#include -#define llx PRIx64 - #include "nonce2key.h" #include "mifarehost.h" #include "ui.h" +#include "proxmark3.h" -int compar_state(const void * a, const void * b) { - // didn't work: (the result is truncated to 32 bits) - //return (*(int64_t*)b - *(int64_t*)a); +int nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, uint64_t ks_info, uint64_t * key) { - // better: - if (*(int64_t*)b == *(int64_t*)a) return 0; - else if (*(int64_t*)b > *(int64_t*)a) return 1; - else return -1; -} + struct Crypto1State *state; + uint32_t i, pos, rr = 0, nr_diff; + byte_t bt, ks3x[8], par[8][8]; -int nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, uint64_t ks_info, uint64_t * key) { - struct Crypto1State *state; - uint32_t i, pos, rr, nr_diff, key_count;//, ks1, ks2; - byte_t bt, ks3x[8], par[8][8]; - uint64_t key_recovered; - int64_t *state_s; - static uint32_t last_uid; - static int64_t *last_keylist; - rr = 0; - - if (last_uid != uid && last_keylist != NULL) - { - free(last_keylist); - last_keylist = NULL; - } - last_uid = uid; - - // Reset the last three significant bits of the reader nonce - nr &= 0xffffff1f; - - PrintAndLog("\nuid(%08x) nt(%08x) par(%016"llx") ks(%016"llx") nr(%08"llx")\n\n",uid,nt,par_info,ks_info,nr); - - for (pos=0; pos<8; pos++) - { - ks3x[7-pos] = (ks_info >> (pos*8)) & 0x0f; - bt = (par_info >> (pos*8)) & 0xff; - for (i=0; i<8; i++) - { - par[7-pos][i] = (bt >> i) & 0x01; - } - } - - printf("|diff|{nr} |ks3|ks3^5|parity |\n"); - printf("+----+--------+---+-----+---------------+\n"); - for (i=0; i<8; i++) - { - nr_diff = nr | i << 5; - printf("| %02x |%08x|",i << 5, nr_diff); - printf(" %01x | %01x |",ks3x[i], ks3x[i]^5); - for (pos=0; pos<7; pos++) printf("%01x,", par[i][pos]); - printf("%01x|\n", par[i][7]); - } + // Reset the last three significant bits of the reader nonce + nr &= 0xffffff1f; - if (par_info==0) - PrintAndLog("parity is all zero,try special attack!just wait for few more seconds..."); - - state = lfsr_common_prefix(nr, rr, ks3x, par, par_info==0); - state_s = (int64_t*)state; - - //char filename[50] ; - //sprintf(filename, "nt_%08x_%d.txt", nt, nr); - //printf("name %s\n", filename); - //FILE* fp = fopen(filename,"w"); - for (i = 0; (state) && ((state + i)->odd != -1); i++) - { - lfsr_rollback_word(state+i, uid^nt, 0); - crypto1_get_lfsr(state + i, &key_recovered); - *(state_s + i) = key_recovered; - //fprintf(fp, "%012llx\n",key_recovered); - } - //fclose(fp); - - if(!state) - return 1; - - qsort(state_s, i, sizeof(*state_s), compar_state); - *(state_s + i) = -1; - - //Create the intersection: - if (par_info == 0 ) - if ( last_keylist != NULL) - { - int64_t *p1, *p2, *p3; - p1 = p3 = last_keylist; - p2 = state_s; - while ( *p1 != -1 && *p2 != -1 ) { - if (compar_state(p1, p2) == 0) { - printf("p1:%"llx" p2:%"llx" p3:%"llx" key:%012"llx"\n",(uint64_t)(p1-last_keylist),(uint64_t)(p2-state_s),(uint64_t)(p3-last_keylist),*p1); - *p3++ = *p1++; - p2++; - } - else { - while (compar_state(p1, p2) == -1) ++p1; - while (compar_state(p1, p2) == 1) ++p2; - } - } - key_count = p3 - last_keylist;; + PrintAndLog("\nuid(%08x) nt(%08x) par(%016"llx") ks(%016"llx") nr(%08"llx")\n\n", uid, nt, par_info, ks_info, nr); + + for ( pos = 0; pos < 8; pos++ ) { + ks3x[7-pos] = (ks_info >> (pos*8)) & 0x0f; + bt = (par_info >> (pos*8)) & 0xff; + + for ( i = 0; i < 8; i++) { + par[7-pos][i] = (bt >> i) & 0x01; } - else - key_count = 0; - else - { - last_keylist = state_s; - key_count = i; } - - printf("key_count:%d\n", key_count); - - // The list may still contain several key candidates. Test each of them with mfCheckKeys - for (i = 0; i < key_count; i++) { - uint8_t keyBlock[6]; - uint64_t key64; - key64 = *(last_keylist + i); - num_to_bytes(key64, 6, keyBlock); - key64 = 0; - if (!mfCheckKeys(0, 0, 1, keyBlock, &key64)) { - *key = key64; - free(last_keylist); - last_keylist = NULL; - if (par_info ==0) - free(state); - return 0; - } - } - - free(last_keylist); - last_keylist = state_s; - - return 1; + printf("|diff|{nr} |ks3|ks3^5|parity |\n"); + printf("+----+--------+---+-----+---------------+\n"); + + for ( i = 0; i < 8; i++) { + nr_diff = nr | i << 5; + printf("| %02x |%08x|", i << 5, nr_diff); + printf(" %01x | %01x |", ks3x[i], ks3x[i]^5); + for (pos = 0; pos < 7; pos++) printf("%01x,", par[i][pos]); + printf("%01x|\n", par[i][7]); + } + printf("+----+--------+---+-----+---------------+\n"); + + state = lfsr_common_prefix(nr, rr, ks3x, par); + lfsr_rollback_word(state, uid^nt, 0); + crypto1_get_lfsr(state, key); + crypto1_destroy(state); + return 0; } +// *outputkey is not used... int tryMfk32(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){ struct Crypto1State *s,*t; @@ -188,6 +92,52 @@ int tryMfk32(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){ crypto1_word(t, uid ^ nt, 0); crypto1_word(t, nr1_enc, 1); if (ar1_enc == (crypto1_word(t, 0, 0) ^ prng_successor(nt, 64))) { + PrintAndLog("Found Key: [%012"llx"]", key); + isSuccess = TRUE; + ++counter; + if (counter==20) + break; + } + } + + num_to_bytes(key, 6, outputkey); + crypto1_destroy(t); + return isSuccess; +} + +int tryMfk32_moebius(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){ + + struct Crypto1State *s, *t; + uint64_t key; // recovered key + uint32_t uid; // serial number + uint32_t nt0; // tag challenge first + uint32_t nt1; // tag challenge second + uint32_t nr0_enc; // first encrypted reader challenge + uint32_t ar0_enc; // first encrypted reader response + uint32_t nr1_enc; // second encrypted reader challenge + uint32_t ar1_enc; // second encrypted reader response + bool isSuccess = FALSE; + int counter = 0; + + uid = myuid;//(uint32_t)bytes_to_num(data + 0, 4); + nt0 = *(uint32_t*)(data+8); + nr0_enc = *(uint32_t*)(data+12); + ar0_enc = *(uint32_t*)(data+16); + nt1 = *(uint32_t*)(data+8); + nr1_enc = *(uint32_t*)(data+32); + ar1_enc = *(uint32_t*)(data+36); + + s = lfsr_recovery32(ar0_enc ^ prng_successor(nt0, 64), 0); + + for(t = s; t->odd | t->even; ++t) { + lfsr_rollback_word(t, 0, 0); + lfsr_rollback_word(t, nr0_enc, 1); + lfsr_rollback_word(t, uid ^ nt0, 0); + crypto1_get_lfsr(t, &key); + + crypto1_word(t, uid ^ nt1, 0); + crypto1_word(t, nr1_enc, 1); + if (ar1_enc == (crypto1_word(t, 0, 0) ^ prng_successor(nt1, 64))) { PrintAndLog("Found Key: [%012"llx"]",key); isSuccess = TRUE; ++counter; @@ -195,7 +145,8 @@ int tryMfk32(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){ break; } } - free(s); + num_to_bytes(key, 6, outputkey); + crypto1_destroy(t); return isSuccess; } @@ -241,7 +192,7 @@ int tryMfk64(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){ lfsr_rollback_word(revstate, uid ^ nt, 0); crypto1_get_lfsr(revstate, &key); PrintAndLog("Found Key: [%012"llx"]",key); + num_to_bytes(key, 6, outputkey); crypto1_destroy(revstate); - crypto1_destroy(pcs); return 0; -} +} \ No newline at end of file