From a0f33b6682db1fc4ab60504f11e99eb682dc9c56 Mon Sep 17 00:00:00 2001 From: iceman1001 Date: Tue, 19 Jan 2016 17:22:18 +0100 Subject: [PATCH 1/1] CHG: started to clean up the crapto1 imp in client/nonce2key/ folder. --- client/Makefile | 5 +- client/cmdhf14a.c | 2 +- client/cmdhfmf.c | 64 ++--- client/nonce2key/crapto1.c | 486 +++++++++++++---------------------- client/nonce2key/crapto1.h | 42 ++- client/nonce2key/crypto1.c | 54 +++- client/nonce2key/nonce2key.c | 116 +-------- 7 files changed, 281 insertions(+), 488 deletions(-) diff --git a/client/Makefile b/client/Makefile index f071f85b..61afaf59 100644 --- a/client/Makefile +++ b/client/Makefile @@ -5,9 +5,8 @@ #----------------------------------------------------------------------------- include ../common/Makefile.common - -CC=gcc -CXX=g++ +CC = gcc +CXX = g++ #COMMON_FLAGS = -m32 VPATH = ../common ../zlib OBJDIR = obj diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c index a0260004..33a4234c 100644 --- a/client/cmdhf14a.c +++ b/client/cmdhf14a.c @@ -574,7 +574,7 @@ int CmdHF14ASim(const char *Cmd) int len = (resp.arg[1] > sizeof(data)) ? sizeof(data) : resp.arg[1]; memcpy(data, resp.d.asBytes, len); tryMfk32(uid, data, key); - tryMfk32_moebius(uid, data, key); + //tryMfk32_moebius(uid, data, key); //tryMfk64(uid, data, key); PrintAndLog("--"); } diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c index 00252661..cf0f5c13 100644 --- a/client/cmdhfmf.c +++ b/client/cmdhfmf.c @@ -1218,10 +1218,12 @@ int CmdHF14AMf1kSim(const char *Cmd) } pnr +=2; } + if (param_getchar(Cmd, pnr) == 'n') { exitAfterNReads = param_get8(Cmd,pnr+1); pnr += 2; } + if (param_getchar(Cmd, pnr) == 'i' ) { //Using a flag to signal interactiveness, least significant bit flags |= FLAG_INTERACTIVE; @@ -1232,10 +1234,13 @@ int CmdHF14AMf1kSim(const char *Cmd) //Using a flag to signal interactiveness, least significant bit flags |= FLAG_NR_AR_ATTACK; } + PrintAndLog(" uid:%s, numreads:%d, flags:%d (0x%02x) ", flags & FLAG_4B_UID_IN_DATA ? sprint_hex(uid,4): flags & FLAG_7B_UID_IN_DATA ? sprint_hex(uid,7): "N/A" - , exitAfterNReads, flags,flags); + , exitAfterNReads + , flags + , flags); UsbCommand c = {CMD_SIMULATE_MIFARE_CARD, {flags, exitAfterNReads,0}}; @@ -1250,40 +1255,39 @@ int CmdHF14AMf1kSim(const char *Cmd) UsbCommand resp; PrintAndLog("Press pm3-button or send another cmd to abort simulation"); - //while(! WaitForResponseTimeout(CMD_ACK,&resp,1500)) { - //We're waiting only 1.5 s at a time, otherwise we get the - // annoying message about "Waiting for a response... " - //} - while(!ukbhit() ){ - if (!WaitForResponseTimeout(CMD_ACK,&resp,1500) ) continue; + + while( !ukbhit() ){ + if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500) ) continue; if ( !(flags & FLAG_NR_AR_ATTACK) ) break; + if ( (resp.arg[0] & 0xffff) != CMD_SIMULATE_MIFARE_CARD ) break; - memset(data, 0x00, sizeof(data)); - memset(key, 0x00, sizeof(key)); - int len = (resp.arg[1] > sizeof(data)) ? sizeof(data) : resp.arg[1]; - - memcpy(data, resp.d.asBytes, len); - - uint64_t corr_uid = 0; - if ( memcmp(data, "\x00\x00\x00\x00", 4) == 0 ) { - corr_uid = ((uint64_t)(data[3] << 24)) | (data[2] << 16) | (data[1] << 8) | data[0]; - tryMfk32(corr_uid, data, key); - } else { - corr_uid |= (uint64_t)data[2] << 48; - corr_uid |= (uint64_t)data[1] << 40; - corr_uid |= (uint64_t)data[0] << 32; - corr_uid |= (uint64_t)data[7] << 24; - corr_uid |= (uint64_t)data[6] << 16; - corr_uid |= (uint64_t)data[5] << 8; - corr_uid |= (uint64_t)data[4]; - tryMfk64(corr_uid, data, key); - } - PrintAndLog("--"); + memset(data, 0x00, sizeof(data)); + memset(key, 0x00, sizeof(key)); + int len = (resp.arg[1] > sizeof(data)) ? sizeof(data) : resp.arg[1]; + + memcpy(data, resp.d.asBytes, len); + + uint64_t corr_uid = 0; + + // this IF? what was I thinking of? + if ( memcmp(data, "\x00\x00\x00\x00", 4) == 0 ) { + corr_uid = ((uint64_t)(data[3] << 24)) | (data[2] << 16) | (data[1] << 8) | data[0]; + tryMfk32(corr_uid, data, key); + } else { + corr_uid |= (uint64_t)data[2] << 48; + corr_uid |= (uint64_t)data[1] << 40; + corr_uid |= (uint64_t)data[0] << 32; + corr_uid |= (uint64_t)data[7] << 24; + corr_uid |= (uint64_t)data[6] << 16; + corr_uid |= (uint64_t)data[5] << 8; + corr_uid |= (uint64_t)data[4]; + tryMfk64(corr_uid, data, key); } - } - + PrintAndLog("--"); + } + } return 0; } diff --git a/client/nonce2key/crapto1.c b/client/nonce2key/crapto1.c index dfad1c40..4ecc5943 100644 --- a/client/nonce2key/crapto1.c +++ b/client/nonce2key/crapto1.c @@ -15,97 +15,49 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, US$ - Copyright (C) 2008-2008 bla + Copyright (C) 2008-2014 bla */ #include "crapto1.h" #include #if !defined LOWMEM && defined __GNUC__ -uint8_t filterlut[1 << 20]; +static uint8_t filterlut[1 << 20]; static void __attribute__((constructor)) fill_lut() { - uint32_t x; - uint32_t f; - for(x = 0; x < 1 << 20; ++x) { - f = 0xf22c0 >> (x & 0xf) & 16; - f |= 0x6c9c0 >> (x >> 4 & 0xf) & 8; - f |= 0x3c8b0 >> (x >> 8 & 0xf) & 4; - f |= 0x1e458 >> (x >> 12 & 0xf) & 2; - f |= 0x0d938 >> (x >> 16 & 0xf) & 1; - filterlut[x] = BIT(0xEC57E80A, f); - } + uint32_t i; + for(i = 0; i < 1 << 20; ++i) + filterlut[i] = filter(i); } +#define filter(x) (filterlut[(x) & 0xfffff]) #endif - - -typedef struct bucket { - uint32_t *head; - uint32_t *bp; -} bucket_t; - -typedef bucket_t bucket_array_t[2][0x100]; - -typedef struct bucket_info { - struct { - uint32_t *head, *tail; - } bucket_info[2][0x100]; - uint32_t numbuckets; - } bucket_info_t; - - -static void bucket_sort_intersect(uint32_t* const estart, uint32_t* const estop, - uint32_t* const ostart, uint32_t* const ostop, - bucket_info_t *bucket_info, bucket_array_t bucket) +static void quicksort(uint32_t* const start, uint32_t* const stop) { - uint32_t *p1, *p2; - uint32_t *start[2]; - uint32_t *stop[2]; - - start[0] = estart; - stop[0] = estop; - start[1] = ostart; - stop[1] = ostop; - - // init buckets to be empty - for (uint32_t i = 0; i < 2; i++) { - for (uint32_t j = 0x00; j <= 0xff; j++) { - bucket[i][j].bp = bucket[i][j].head; - } - } + uint32_t *it = start + 1, *rit = stop, t; - // sort the lists into the buckets based on the MSB (contribution bits) - for (uint32_t i = 0; i < 2; i++) { - for (p1 = start[i]; p1 <= stop[i]; p1++) { - uint32_t bucket_index = (*p1 & 0xff000000) >> 24; - *(bucket[i][bucket_index].bp++) = *p1; - } - } + if(it > rit) + return; + while(it < rit) + if(*it <= *start) + ++it; + else if(*rit > *start) + --rit; + else + t = *it, *it = *rit, *rit = t; - // write back intersecting buckets as sorted list. - // fill in bucket_info with head and tail of the bucket contents in the list and number of non-empty buckets. - uint32_t nonempty_bucket; - for (uint32_t i = 0; i < 2; i++) { - p1 = start[i]; - nonempty_bucket = 0; - for (uint32_t j = 0x00; j <= 0xff; j++) { - if (bucket[0][j].bp != bucket[0][j].head && bucket[1][j].bp != bucket[1][j].head) { // non-empty intersecting buckets only - bucket_info->bucket_info[i][nonempty_bucket].head = p1; - for (p2 = bucket[i][j].head; p2 < bucket[i][j].bp; *p1++ = *p2++); - bucket_info->bucket_info[i][nonempty_bucket].tail = p1 - 1; - nonempty_bucket++; - } - } - bucket_info->numbuckets = nonempty_bucket; - } -} + if(*rit >= *start) + --rit; + if(rit != start) + t = *rit, *rit = *start, *start = t; + quicksort(start, rit - 1); + quicksort(rit + 1, stop); +} /** binsearch * Binary search for the first occurence of *stop's MSB in sorted [start,stop] */ -static inline uint32_t* -binsearch(uint32_t *start, uint32_t *stop) +static inline uint32_t* binsearch(uint32_t *start, uint32_t *stop) { uint32_t mid, val = *stop & 0xff000000; while(start != stop) @@ -137,33 +89,25 @@ static inline void extend_table(uint32_t *tbl, uint32_t **end, int bit, int m1, int m2, uint32_t in) { in <<= 24; - - for(uint32_t *p = tbl; p <= *end; p++) { - *p <<= 1; - if(filter(*p) != filter(*p | 1)) { // replace - *p |= filter(*p) ^ bit; - update_contribution(p, m1, m2); - *p ^= in; - } else if(filter(*p) == bit) { // insert - *++*end = p[1]; - p[1] = p[0] | 1; - update_contribution(p, m1, m2); - *p++ ^= in; - update_contribution(p, m1, m2); - *p ^= in; - } else { // drop - *p-- = *(*end)--; - } - } - + for(*tbl <<= 1; tbl <= *end; *++tbl <<= 1) + if(filter(*tbl) ^ filter(*tbl | 1)) { + *tbl |= filter(*tbl) ^ bit; + update_contribution(tbl, m1, m2); + *tbl ^= in; + } else if(filter(*tbl) == bit) { + *++*end = tbl[1]; + tbl[1] = tbl[0] | 1; + update_contribution(tbl, m1, m2); + *tbl++ ^= in; + update_contribution(tbl, m1, m2); + *tbl ^= in; + } else + *tbl-- = *(*end)--; } - - /** extend_table_simple * using a bit of the keystream extend the table of possible lfsr states */ -static inline void -extend_table_simple(uint32_t *tbl, uint32_t **end, int bit) +static inline void extend_table_simple(uint32_t *tbl, uint32_t **end, int bit) { for(*tbl <<= 1; tbl <= *end; *++tbl <<= 1) if(filter(*tbl) ^ filter(*tbl | 1)) { // replace @@ -182,10 +126,9 @@ extend_table_simple(uint32_t *tbl, uint32_t **end, int bit) static struct Crypto1State* recover(uint32_t *o_head, uint32_t *o_tail, uint32_t oks, uint32_t *e_head, uint32_t *e_tail, uint32_t eks, int rem, - struct Crypto1State *sl, uint32_t in, bucket_array_t bucket) + struct Crypto1State *sl, uint32_t in) { - uint32_t *o, *e; - bucket_info_t bucket_info; + uint32_t *o, *e, i; if(rem == -1) { for(e = e_head; e <= e_tail; ++e) { @@ -193,31 +136,41 @@ recover(uint32_t *o_head, uint32_t *o_tail, uint32_t oks, for(o = o_head; o <= o_tail; ++o, ++sl) { sl->even = *o; sl->odd = *e ^ parity(*o & LF_POLY_ODD); + sl[1].odd = sl[1].even = 0; } } - sl->odd = sl->even = 0; return sl; } - for(uint32_t i = 0; i < 4 && rem--; i++) { - extend_table(o_head, &o_tail, (oks >>= 1) & 1, - LF_POLY_EVEN << 1 | 1, LF_POLY_ODD << 1, 0); + for(i = 0; i < 4 && rem--; i++) { + oks >>= 1; + eks >>= 1; + in >>= 2; + extend_table(o_head, &o_tail, oks & 1, LF_POLY_EVEN << 1 | 1, + LF_POLY_ODD << 1, 0); if(o_head > o_tail) return sl; - extend_table(e_head, &e_tail, (eks >>= 1) & 1, - LF_POLY_ODD, LF_POLY_EVEN << 1 | 1, (in >>= 2) & 3); + extend_table(e_head, &e_tail, eks & 1, LF_POLY_ODD, + LF_POLY_EVEN << 1 | 1, in & 3); if(e_head > e_tail) return sl; } - bucket_sort_intersect(e_head, e_tail, o_head, o_tail, &bucket_info, bucket); + quicksort(o_head, o_tail); + quicksort(e_head, e_tail); - for (int i = bucket_info.numbuckets - 1; i >= 0; i--) { - sl = recover(bucket_info.bucket_info[1][i].head, bucket_info.bucket_info[1][i].tail, oks, - bucket_info.bucket_info[0][i].head, bucket_info.bucket_info[0][i].tail, eks, - rem, sl, in, bucket); + while(o_tail >= o_head && e_tail >= e_head) + if(((*o_tail ^ *e_tail) >> 24) == 0) { + o_tail = binsearch(o_head, o = o_tail); + e_tail = binsearch(e_head, e = e_tail); + sl = recover(o_tail--, o, oks, + e_tail--, e, eks, rem, sl, in); } + else if(*o_tail > *e_tail) + o_tail = binsearch(o_head, o_tail) - 1; + else + e_tail = binsearch(e_head, e_tail) - 1; return sl; } @@ -243,19 +196,12 @@ struct Crypto1State* lfsr_recovery32(uint32_t ks2, uint32_t in) even_head = even_tail = malloc(sizeof(uint32_t) << 21); statelist = malloc(sizeof(struct Crypto1State) << 18); if(!odd_tail-- || !even_tail-- || !statelist) { + free(statelist); + statelist = 0; goto out; } - statelist->odd = statelist->even = 0; - // allocate memory for out of place bucket_sort - bucket_array_t bucket; - for (uint32_t i = 0; i < 2; i++) - for (uint32_t j = 0; j <= 0xff; j++) { - bucket[i][j].head = malloc(sizeof(uint32_t)<<14); - if (!bucket[i][j].head) { - goto out; - } - } + statelist->odd = statelist->even = 0; // initialize statelists: add all possible states which would result into the rightmost 2 bits of the keystream for(i = 1 << 20; i >= 0; --i) { @@ -274,18 +220,13 @@ struct Crypto1State* lfsr_recovery32(uint32_t ks2, uint32_t in) // the statelists now contain all states which could have generated the last 10 Bits of the keystream. // 22 bits to go to recover 32 bits in total. From now on, we need to take the "in" // parameter into account. - - in = (in >> 16 & 0xff) | (in << 16) | (in & 0xff00); // Byte swapping - - recover(odd_head, odd_tail, oks, even_head, even_tail, eks, 11, statelist, in << 1, bucket); + in = (in >> 16 & 0xff) | (in << 16) | (in & 0xff00); + recover(odd_head, odd_tail, oks, + even_head, even_tail, eks, 11, statelist, in << 1); out: free(odd_head); free(even_head); - for (uint32_t i = 0; i < 2; i++) - for (uint32_t j = 0; j <= 0xff; j++) - free(bucket[i][j].head); - return statelist; } @@ -326,12 +267,12 @@ struct Crypto1State* lfsr_recovery64(uint32_t ks2, uint32_t ks3) sl->odd = sl->even = 0; for(i = 30; i >= 0; i -= 2) { - oks[i >> 1] = BIT(ks2, i ^ 24); - oks[16 + (i >> 1)] = BIT(ks3, i ^ 24); + oks[i >> 1] = BEBIT(ks2, i); + oks[16 + (i >> 1)] = BEBIT(ks3, i); } for(i = 31; i >= 0; i -= 2) { - eks[i >> 1] = BIT(ks2, i ^ 24); - eks[16 + (i >> 1)] = BIT(ks3, i ^ 24); + eks[i >> 1] = BEBIT(ks2, i); + eks[16 + (i >> 1)] = BEBIT(ks3, i); } for(i = 0xfffff; i >= 0; --i) { @@ -382,89 +323,95 @@ struct Crypto1State* lfsr_recovery64(uint32_t ks2, uint32_t ks3) /** lfsr_rollback_bit * Rollback the shift register in order to get previous states */ -void lfsr_rollback_bit(struct Crypto1State *s, uint32_t in, int fb) +uint8_t lfsr_rollback_bit(struct Crypto1State *s, uint32_t in, int fb) { int out; - uint32_t tmp; + uint8_t ret; + uint32_t t; s->odd &= 0xffffff; - tmp = s->odd; - s->odd = s->even; - s->even = tmp; + t = s->odd, s->odd = s->even, s->even = t; out = s->even & 1; out ^= LF_POLY_EVEN & (s->even >>= 1); out ^= LF_POLY_ODD & s->odd; out ^= !!in; - out ^= filter(s->odd) & !!fb; + out ^= (ret = filter(s->odd)) & !!fb; s->even |= parity(out) << 23; + return ret; } /** lfsr_rollback_byte * Rollback the shift register in order to get previous states */ -void lfsr_rollback_byte(struct Crypto1State *s, uint32_t in, int fb) +uint8_t lfsr_rollback_byte(struct Crypto1State *s, uint32_t in, int fb) { -/* int i; + /* + int i, ret = 0; for (i = 7; i >= 0; --i) - lfsr_rollback_bit(s, BEBIT(in, i), fb); + ret |= lfsr_rollback_bit(s, BIT(in, i), fb) << i; */ // unfold loop 20160112 - lfsr_rollback_bit(s, BEBIT(in, 7), fb); - lfsr_rollback_bit(s, BEBIT(in, 6), fb); - lfsr_rollback_bit(s, BEBIT(in, 5), fb); - lfsr_rollback_bit(s, BEBIT(in, 4), fb); - lfsr_rollback_bit(s, BEBIT(in, 3), fb); - lfsr_rollback_bit(s, BEBIT(in, 2), fb); - lfsr_rollback_bit(s, BEBIT(in, 1), fb); - lfsr_rollback_bit(s, BEBIT(in, 0), fb); + uint8_t ret = 0; + ret |= lfsr_rollback_bit(s, BIT(in, 7), fb) << 7; + ret |= lfsr_rollback_bit(s, BIT(in, 6), fb) << 6; + ret |= lfsr_rollback_bit(s, BIT(in, 5), fb) << 5; + ret |= lfsr_rollback_bit(s, BIT(in, 4), fb) << 4; + ret |= lfsr_rollback_bit(s, BIT(in, 3), fb) << 3; + ret |= lfsr_rollback_bit(s, BIT(in, 2), fb) << 2; + ret |= lfsr_rollback_bit(s, BIT(in, 1), fb) << 1; + ret |= lfsr_rollback_bit(s, BIT(in, 0), fb) << 0; + return ret; } /** lfsr_rollback_word * Rollback the shift register in order to get previous states */ -void lfsr_rollback_word(struct Crypto1State *s, uint32_t in, int fb) +uint32_t lfsr_rollback_word(struct Crypto1State *s, uint32_t in, int fb) { -/* + /* int i; + uint32_t ret = 0; for (i = 31; i >= 0; --i) - lfsr_rollback_bit(s, BEBIT(in, i), fb); + ret |= lfsr_rollback_bit(s, BEBIT(in, i), fb) << (i ^ 24); */ // unfold loop 20160112 - lfsr_rollback_bit(s, BEBIT(in, 31), fb); - lfsr_rollback_bit(s, BEBIT(in, 30), fb); - lfsr_rollback_bit(s, BEBIT(in, 29), fb); - lfsr_rollback_bit(s, BEBIT(in, 28), fb); - lfsr_rollback_bit(s, BEBIT(in, 27), fb); - lfsr_rollback_bit(s, BEBIT(in, 26), fb); - lfsr_rollback_bit(s, BEBIT(in, 25), fb); - lfsr_rollback_bit(s, BEBIT(in, 24), fb); - - lfsr_rollback_bit(s, BEBIT(in, 23), fb); - lfsr_rollback_bit(s, BEBIT(in, 22), fb); - lfsr_rollback_bit(s, BEBIT(in, 21), fb); - lfsr_rollback_bit(s, BEBIT(in, 20), fb); - lfsr_rollback_bit(s, BEBIT(in, 19), fb); - lfsr_rollback_bit(s, BEBIT(in, 18), fb); - lfsr_rollback_bit(s, BEBIT(in, 17), fb); - lfsr_rollback_bit(s, BEBIT(in, 16), fb); - - lfsr_rollback_bit(s, BEBIT(in, 15), fb); - lfsr_rollback_bit(s, BEBIT(in, 14), fb); - lfsr_rollback_bit(s, BEBIT(in, 13), fb); - lfsr_rollback_bit(s, BEBIT(in, 12), fb); - lfsr_rollback_bit(s, BEBIT(in, 11), fb); - lfsr_rollback_bit(s, BEBIT(in, 10), fb); - lfsr_rollback_bit(s, BEBIT(in, 9), fb); - lfsr_rollback_bit(s, BEBIT(in, 8), fb); - - lfsr_rollback_bit(s, BEBIT(in, 7), fb); - lfsr_rollback_bit(s, BEBIT(in, 6), fb); - lfsr_rollback_bit(s, BEBIT(in, 5), fb); - lfsr_rollback_bit(s, BEBIT(in, 4), fb); - lfsr_rollback_bit(s, BEBIT(in, 3), fb); - lfsr_rollback_bit(s, BEBIT(in, 2), fb); - lfsr_rollback_bit(s, BEBIT(in, 1), fb); - lfsr_rollback_bit(s, BEBIT(in, 0), fb); + uint32_t ret = 0; + ret |= lfsr_rollback_bit(s, BEBIT(in, 31), fb) << (31 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 30), fb) << (30 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 29), fb) << (29 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 28), fb) << (28 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 27), fb) << (27 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 26), fb) << (26 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 25), fb) << (25 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 24), fb) << (24 ^ 24); + + ret |= lfsr_rollback_bit(s, BEBIT(in, 23), fb) << (23 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 22), fb) << (22 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 21), fb) << (21 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 20), fb) << (20 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 19), fb) << (19 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 18), fb) << (18 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 17), fb) << (17 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 16), fb) << (16 ^ 24); + + ret |= lfsr_rollback_bit(s, BEBIT(in, 15), fb) << (15 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 14), fb) << (14 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 13), fb) << (13 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 12), fb) << (12 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 11), fb) << (11 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 10), fb) << (10 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 9), fb) << (9 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 8), fb) << (8 ^ 24); + + ret |= lfsr_rollback_bit(s, BEBIT(in, 7), fb) << (7 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 6), fb) << (6 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 5), fb) << (5 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 4), fb) << (4 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 3), fb) << (3 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 2), fb) << (2 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 1), fb) << (1 ^ 24); + ret |= lfsr_rollback_bit(s, BEBIT(in, 0), fb) << (0 ^ 24); + return ret; } /** nonce_distance @@ -498,86 +445,63 @@ static uint32_t fastfwd[2][8] = { * Described in the "dark side" paper. It returns an -1 terminated array * of possible partial(21 bit) secret state. * The required keystream(ks) needs to contain the keystream that was used to - * encrypt the NACK which is observed when varying only the 4 last bits of Nr + * encrypt the NACK which is observed when varying only the 3 last bits of Nr * only correct iff [NR_3] ^ NR_3 does not depend on Nr_3 */ uint32_t *lfsr_prefix_ks(uint8_t ks[8], int isodd) { - uint32_t *candidates = malloc(4 << 21); + uint32_t *candidates = malloc(4 << 10); + if(!candidates) return 0; + uint32_t c, entry; - int size, i; - - if(!candidates) - return 0; - - size = (1 << 21) - 1; - for(i = 0; i <= size; ++i) - candidates[i] = i; + int size = 0, i, good; - for(c = 0; c < 8; ++c) - for(i = 0;i <= size; ++i) { - entry = candidates[i] ^ fastfwd[isodd][c]; - - if(filter(entry >> 1) == BIT(ks[c], isodd)) - if(filter(entry) == BIT(ks[c], isodd + 2)) - continue; - - candidates[i--] = candidates[size--]; + for(i = 0; i < 1 << 21; ++i) { + for(c = 0, good = 1; good && c < 8; ++c) { + entry = i ^ fastfwd[isodd][c]; + good &= (BIT(ks[c], isodd) == filter(entry >> 1)); + good &= (BIT(ks[c], isodd + 2) == filter(entry)); } + if(good) + candidates[size++] = i; + } - candidates[size + 1] = -1; + candidates[size] = -1; return candidates; } -/** brute_top +/** check_pfx_parity * helper function which eliminates possible secret states using parity bits */ -static struct Crypto1State* -brute_top(uint32_t prefix, uint32_t rresp, unsigned char parities[8][8], - uint32_t odd, uint32_t even, struct Crypto1State* sl, uint8_t no_chk) +static struct Crypto1State* check_pfx_parity(uint32_t prefix, uint32_t rresp, uint8_t parities[8][8], uint32_t odd, uint32_t even, struct Crypto1State* sl) { - struct Crypto1State s; - uint32_t ks1, nr, ks2, rr, ks3, good, c; + uint32_t ks1, nr, ks2, rr, ks3, c, good = 1; - for(c = 0; c < 8; ++c) { - s.odd = odd ^ fastfwd[1][c]; - s.even = even ^ fastfwd[0][c]; + for(c = 0; good && c < 8; ++c) { + sl->odd = odd ^ fastfwd[1][c]; + sl->even = even ^ fastfwd[0][c]; - lfsr_rollback_bit(&s, 0, 0); - lfsr_rollback_bit(&s, 0, 0); - lfsr_rollback_bit(&s, 0, 0); + lfsr_rollback_bit(sl, 0, 0); + lfsr_rollback_bit(sl, 0, 0); - lfsr_rollback_word(&s, 0, 0); - lfsr_rollback_word(&s, prefix | c << 5, 1); + ks3 = lfsr_rollback_bit(sl, 0, 0); + ks2 = lfsr_rollback_word(sl, 0, 0); + ks1 = lfsr_rollback_word(sl, prefix | c << 5, 1); - sl->odd = s.odd; - sl->even = s.even; - - if (no_chk) - break; - - ks1 = crypto1_word(&s, prefix | c << 5, 1); - ks2 = crypto1_word(&s,0,0); - ks3 = crypto1_word(&s, 0,0); nr = ks1 ^ (prefix | c << 5); rr = ks2 ^ rresp; - good = 1; good &= parity(nr & 0x000000ff) ^ parities[c][3] ^ BIT(ks2, 24); good &= parity(rr & 0xff000000) ^ parities[c][4] ^ BIT(ks2, 16); good &= parity(rr & 0x00ff0000) ^ parities[c][5] ^ BIT(ks2, 8); good &= parity(rr & 0x0000ff00) ^ parities[c][6] ^ BIT(ks2, 0); - good &= parity(rr & 0x000000ff) ^ parities[c][7] ^ BIT(ks3, 24); - - if(!good) - return sl; + good &= parity(rr & 0x000000ff) ^ parities[c][7] ^ ks3; } - return ++sl; + return sl + good; } - /** lfsr_common_prefix * Implentation of the common prefix attack. * Requires the 28 bit constant prefix used as reader nonce (pfx) @@ -587,7 +511,8 @@ brute_top(uint32_t prefix, uint32_t rresp, unsigned char parities[8][8], * It returns a zero terminated list of possible cipher states after the * tag nonce was fed in */ -struct Crypto1State* lfsr_common_prefix(uint32_t pfx, uint32_t rr, uint8_t ks[8], uint8_t par[8][8], uint8_t no_par) + +struct Crypto1State* lfsr_common_prefix(uint32_t pfx, uint32_t rr, uint8_t ks[8], uint8_t par[8][8]) { struct Crypto1State *statelist, *s; uint32_t *odd, *even, *o, *e, top; @@ -595,92 +520,25 @@ struct Crypto1State* lfsr_common_prefix(uint32_t pfx, uint32_t rr, uint8_t ks[8] odd = lfsr_prefix_ks(ks, 1); even = lfsr_prefix_ks(ks, 0); - statelist = malloc((sizeof *statelist) << 21); //how large should be? - if(!statelist || !odd || !even) - { + s = statelist = malloc((sizeof *statelist) << 20); + if(!s || !odd || !even) { free(statelist); free(odd); free(even); return 0; } - s = statelist; - for(o = odd; *o != -1; ++o) - for(e = even; *e != -1; ++e) + for(o = odd; *o + 1; ++o) + for(e = even; *e + 1; ++e) for(top = 0; top < 64; ++top) { - *o = (*o & 0x1fffff) | (top << 21); - *e = (*e & 0x1fffff) | (top >> 3) << 21; - s = brute_top(pfx, rr, par, *o, *e, s, no_par); + *o += 1 << 21; + *e += (!(top & 7) + 1) << 21; + s = check_pfx_parity(pfx, rr, par, *o, *e, s); } - s->odd = s->even = -1; - //printf("state count = %d\n",s-statelist); + s->odd = s->even = 0; free(odd); free(even); - return statelist; -} - -/* -struct Crypto1State* lfsr_common_prefix(uint32_t pfx, uint32_t rr, uint8_t ks[8], uint8_t par[8][8], uint8_t no_par, uint32_t nt, uint32_t uid) -{ - long long int amount = 0; - struct Crypto1State *statelist, *s; - uint32_t *odd, *even, *o, *e, top; - - odd = lfsr_prefix_ks(ks, 1); - even = lfsr_prefix_ks(ks, 0); - - s = statelist = malloc((sizeof *statelist) << 20); - if(!s || !odd || !even) { - free(odd); - free(even); - free(statelist); - return 0; - } - - char filename[50] = "archivo.txt"; - sprintf(filename, "logs/%x.txt", nt); - PrintAndLog("Name: %s\n", filename); - FILE *file = fopen(filename,"w+"); - if ( !file ) { - s->odd = s->even = 0; - free(odd); - free(even); - PrintAndLog("Failed to create file"); - return 0; - } - PrintAndLog("Creating file... "); - uint32_t xored = uid^nt; - - int lastOdd = 0; - for(o = odd; *o + 1; ++o) - for(e = even; *e + 1; ++e) - for(top = 0; top < 64; ++top) { - *o += 1 << 21; - *e += (!(top & 7) + 1) << 21; - - //added by MG - if(lastOdd != statelist->odd){ - // Here I create a temporal crypto1 state, - // where I load the odd and even state and work with it, - // in order not to interfere with regular mechanism, This is what I save to file - struct Crypto1State *state; - lastOdd = state->odd = statelist->odd; state->even = statelist->even; - lfsr_rollback_word(state,xored,0); - fprintf(file,"%x %x \n",state->odd,state->even); - amount++; - } - //s = check_pfx_parity(pfx, rr, par, *o, *e, s); //This is not useful at all when attacking chineese cards - s = brute_top(pfx, rr, par, *o, *e, s, no_par); - } - - PrintAndLog("File created, amount %u\n",amount); - fclose(file); - s->odd = s->even = 0; - free(odd); - free(even); - return statelist; -} - */ +} \ No newline at end of file diff --git a/client/nonce2key/crapto1.h b/client/nonce2key/crapto1.h index 7f834528..c5e2ea0a 100644 --- a/client/nonce2key/crapto1.h +++ b/client/nonce2key/crapto1.h @@ -15,10 +15,10 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, US$ - Copyright (C) 2008-2008 bla + Copyright (C) 2008-2014 bla */ -#ifndef CRAPTO1_INCLUDED -#define CRAPTO1_INCLUDED +#ifndef CRAPTO1_H__ +#define CRAPTO1_H__ #include #ifdef __cplusplus extern "C" { @@ -36,17 +36,16 @@ uint32_t prng_successor(uint32_t x, uint32_t n); struct Crypto1State* lfsr_recovery32(uint32_t ks2, uint32_t in); struct Crypto1State* lfsr_recovery64(uint32_t ks2, uint32_t ks3); uint32_t *lfsr_prefix_ks(uint8_t ks[8], int isodd); -struct Crypto1State* -lfsr_common_prefix(uint32_t pfx, uint32_t rr, uint8_t ks[8], uint8_t par[8][8], uint8_t no_par); +struct Crypto1State* lfsr_common_prefix(uint32_t pfx, uint32_t rr, uint8_t ks[8], uint8_t par[8][8]); +struct Crypto1State* lfsr_common_prefix_ex(uint32_t pfx, uint8_t ks[8], uint8_t par[8][8]); - -void lfsr_rollback_bit(struct Crypto1State* s, uint32_t in, int fb); -void lfsr_rollback_byte(struct Crypto1State* s, uint32_t in, int fb); -void lfsr_rollback_word(struct Crypto1State* s, uint32_t in, int fb); +uint8_t lfsr_rollback_bit(struct Crypto1State* s, uint32_t in, int fb); +uint8_t lfsr_rollback_byte(struct Crypto1State* s, uint32_t in, int fb); +uint32_t lfsr_rollback_word(struct Crypto1State* s, uint32_t in, int fb); int nonce_distance(uint32_t from, uint32_t to); #define SWAPENDIAN(x)\ (x = (x >> 8 & 0xff00ff) | (x & 0xff00ff) << 8, x = x >> 16 | x << 16) - + #define FOREACH_VALID_NONCE(N, FILTER, FSIZE)\ uint32_t __n = 0,__M = 0, N = 0;\ int __i;\ @@ -70,22 +69,16 @@ static inline int parity(uint32_t x) x ^= x >> 4; return BIT(0x6996, x & 0xf); #else - __asm( "movl %1, %%eax\n" - "mov %%ax, %%cx\n" - "shrl $0x10, %%eax\n" - "xor %%ax, %%cx\n" - "xor %%ch, %%cl\n" - "setpo %%al\n" - "movzx %%al, %0\n": "=r"(x) : "r"(x): "eax","ecx"); + __asm__( "movl %1, %%eax\n" + "mov %%ax, %%cx\n" + "shrl $0x10, %%eax\n" + "xor %%ax, %%cx\n" + "xor %%ch, %%cl\n" + "setpo %%al\n" + "movzx %%al, %0\n": "=r"(x) : "r"(x): "eax","ecx"); return x; #endif } - -#if !defined LOWMEM && defined __GNUC__ -extern uint8_t filterlut[1 << 20]; -#define filter(x) (filterlut[(x) & 0xfffff]) -#define filter_unsafe(x) (filterlut[x]) -#else static inline int filter(uint32_t const x) { uint32_t f; @@ -97,9 +90,6 @@ static inline int filter(uint32_t const x) f |= 0x0d938 >> (x >> 16 & 0xf) & 1; return BIT(0xEC57E80A, f); } -#define filter_unsafe(x) (filter(x)) -#endif - #ifdef __cplusplus } #endif diff --git a/client/nonce2key/crypto1.c b/client/nonce2key/crypto1.c index 77fb5fb0..f6779a18 100644 --- a/client/nonce2key/crypto1.c +++ b/client/nonce2key/crypto1.c @@ -20,9 +20,6 @@ #include "crapto1.h" #include -#define SWAPENDIAN(x)\ - (x = (x >> 8 & 0xff00ff) | (x & 0xff00ff) << 8, x = x >> 16 | x << 16) - struct Crypto1State * crypto1_create(uint64_t key) { struct Crypto1State *s = malloc(sizeof(*s)); @@ -38,7 +35,6 @@ void crypto1_destroy(struct Crypto1State *state) { free(state); } - void crypto1_get_lfsr(struct Crypto1State *state, uint64_t *lfsr) { int i; @@ -67,13 +63,13 @@ uint8_t crypto1_bit(struct Crypto1State *s, uint8_t in, int is_encrypted) } uint8_t crypto1_byte(struct Crypto1State *s, uint8_t in, int is_encrypted) { -/* + /* uint8_t i, ret = 0; for (i = 0; i < 8; ++i) ret |= crypto1_bit(s, BIT(in, i), is_encrypted) << i; -*/ - // unfold loop 20160112 + */ +// unfold loop 20161012 uint8_t ret = 0; ret |= crypto1_bit(s, BIT(in, 0), is_encrypted) << 0; ret |= crypto1_bit(s, BIT(in, 1), is_encrypted) << 1; @@ -87,11 +83,49 @@ uint8_t crypto1_byte(struct Crypto1State *s, uint8_t in, int is_encrypted) } uint32_t crypto1_word(struct Crypto1State *s, uint32_t in, int is_encrypted) { + /* uint32_t i, ret = 0; - for (i = 0; i < 4; ++i, in <<= 8) - ret = ret << 8 | crypto1_byte(s, in >> 24, is_encrypted); - + for (i = 0; i < 32; ++i) + ret |= crypto1_bit(s, BEBIT(in, i), is_encrypted) << (i ^ 24); +*/ +//unfold loop 2016012 + uint32_t ret = 0; + ret |= crypto1_bit(s, BEBIT(in, 0), is_encrypted) << (0 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 1), is_encrypted) << (1 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 2), is_encrypted) << (2 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 3), is_encrypted) << (3 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 4), is_encrypted) << (4 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 5), is_encrypted) << (5 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 6), is_encrypted) << (6 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 7), is_encrypted) << (7 ^ 24); + + ret |= crypto1_bit(s, BEBIT(in, 8), is_encrypted) << (8 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 9), is_encrypted) << (9 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 10), is_encrypted) << (10 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 11), is_encrypted) << (11 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 12), is_encrypted) << (12 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 13), is_encrypted) << (13 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 14), is_encrypted) << (14 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 15), is_encrypted) << (15 ^ 24); + + ret |= crypto1_bit(s, BEBIT(in, 16), is_encrypted) << (16 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 17), is_encrypted) << (17 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 18), is_encrypted) << (18 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 19), is_encrypted) << (19 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 20), is_encrypted) << (20 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 21), is_encrypted) << (21 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 22), is_encrypted) << (22 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 23), is_encrypted) << (23 ^ 24); + + ret |= crypto1_bit(s, BEBIT(in, 24), is_encrypted) << (24 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 25), is_encrypted) << (25 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 26), is_encrypted) << (26 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 27), is_encrypted) << (27 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 28), is_encrypted) << (28 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 29), is_encrypted) << (29 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 30), is_encrypted) << (30 ^ 24); + ret |= crypto1_bit(s, BEBIT(in, 31), is_encrypted) << (31 ^ 24); return ret; } diff --git a/client/nonce2key/nonce2key.c b/client/nonce2key/nonce2key.c index 81f5ae1c..99ede9e0 100644 --- a/client/nonce2key/nonce2key.c +++ b/client/nonce2key/nonce2key.c @@ -9,14 +9,10 @@ //----------------------------------------------------------------------------- // 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) @@ -31,19 +27,8 @@ int compar_state(const void * a, const void * b) { 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 = 0, nr_diff, key_count;//, ks1, ks2; + uint32_t i, pos, rr = 0, nr_diff; 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; - - 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; @@ -66,95 +51,16 @@ int nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, uint64_ 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]); + for (pos = 0; pos < 7; pos++) printf("%01x,", par[i][pos]); printf("%01x|\n", par[i][7]); } printf("+----+--------+---+-----+---------------+\n"); - if ( par_info == 0 ) - PrintAndLog("Parity is all zero, try special attack! 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; - - // quicksort statelist - qsort(state_s, i, sizeof(*state_s), compar_state); - - // set last element marker - *(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; - } else { - key_count = 0; - } - } else { - last_keylist = state_s; - key_count = i; - } - - printf("key candidates count: %d\n", key_count); - - // The list may still contain several key candidates. Test each of them with mfCheckKeys - int res; - uint8_t keyBlock[6]; - uint64_t key64; - for (i = 0; i < key_count; i++) { - - key64 = *(last_keylist + i); - num_to_bytes(key64, 6, keyBlock); - key64 = 0; - // Call tag to verify if key is correct - res = mfCheckKeys(0, 0, false, 1, keyBlock, &key64); - if (!res) { - *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; + 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... @@ -203,8 +109,9 @@ int tryMfk32(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){ break; } } + + num_to_bytes(key, 6, outputkey); crypto1_destroy(t); - crypto1_destroy(s); return isSuccess; } @@ -248,8 +155,8 @@ int tryMfk32_moebius(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){ break; } } + num_to_bytes(key, 6, outputkey); crypto1_destroy(t); - crypto1_destroy(s); return isSuccess; } @@ -295,6 +202,7 @@ 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); return 0; } \ No newline at end of file -- 2.39.5