X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/812513bf90423845e2e3f7d729b06421db3215a4..d24026ade8d48d5bce892f5baf20f79a3ec35aba:/client/cmdanalyse.c?ds=sidebyside diff --git a/client/cmdanalyse.c b/client/cmdanalyse.c index d725d939..0520a668 100644 --- a/client/cmdanalyse.c +++ b/client/cmdanalyse.c @@ -8,6 +8,7 @@ // Analyse bytes commands //----------------------------------------------------------------------------- #include "cmdanalyse.h" +#include "nonce2key/nonce2key.h" static int CmdHelp(const char *Cmd); @@ -25,13 +26,192 @@ int usage_analyse_lcr(void) { PrintAndLog("expected output: Target (BA) requires final LRC XOR byte value: 5A"); return 0; } +int usage_analyse_checksum(void) { + PrintAndLog("The bytes will be added with eachother and than limited with the applied mask"); + PrintAndLog("Finally compute ones' complement of the least significant bytes"); + PrintAndLog(""); + PrintAndLog("Usage: analyse chksum [h] b m "); + PrintAndLog("Options:"); + PrintAndLog(" h This help"); + PrintAndLog(" b bytes to calc missing XOR in a LCR"); + PrintAndLog(" m bit mask to limit the outpuyt"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" analyse chksum b 137AF00A0A0D m FF"); + PrintAndLog("expected output: 0x61"); + return 0; +} +int usage_analyse_crc(void){ + PrintAndLog("A stub method to test different crc implementations inside the PM3 sourcecode. Just because you figured out the poly, doesn't mean you get the desired output"); + PrintAndLog(""); + PrintAndLog("Usage: analyse crc [h] "); + PrintAndLog("Options:"); + PrintAndLog(" h This help"); + PrintAndLog(" bytes to calc crc"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" analyse crc 137AF00A0A0D"); + return 0; +} +int usage_analyse_hid(void){ + PrintAndLog("Permute function from 'heart of darkness' paper."); + PrintAndLog(""); + PrintAndLog("Usage: analyse hid [h] "); + PrintAndLog("Options:"); + PrintAndLog(" h This help"); + PrintAndLog(" r reverse permuted key"); + PrintAndLog(" f permute key"); + PrintAndLog(" input bytes"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" analyse hid r 0123456789abcdef"); + return 0; +} + static uint8_t calculateLRC( uint8_t* bytes, uint8_t len) { uint8_t LRC = 0; for (uint8_t i = 0; i < len; i++) LRC ^= bytes[i]; return LRC; } + +static uint16_t calcSumCrumbAdd( uint8_t* bytes, uint8_t len, uint32_t mask) { + uint8_t sum = 0; + for (uint8_t i = 0; i < len; i++) { + sum += CRUMB(bytes[i], 0); + sum += CRUMB(bytes[i], 2); + sum += CRUMB(bytes[i], 4); + sum += CRUMB(bytes[i], 6); + } + sum &= mask; + return sum; +} +static uint16_t calcSumCrumbAddOnes( uint8_t* bytes, uint8_t len, uint32_t mask) { + return (~calcSumCrumbAdd(bytes, len, mask) & mask); +} +static uint16_t calcSumNibbleAdd( uint8_t* bytes, uint8_t len, uint32_t mask) { + uint8_t sum = 0; + for (uint8_t i = 0; i < len; i++) { + sum += NIBBLE_LOW(bytes[i]); + sum += NIBBLE_HIGH(bytes[i]); + } + sum &= mask; + return sum; +} +static uint16_t calcSumNibbleAddOnes( uint8_t* bytes, uint8_t len, uint32_t mask){ + return (~calcSumNibbleAdd(bytes, len, mask) & mask); +} +static uint16_t calcSumCrumbXor( uint8_t* bytes, uint8_t len, uint32_t mask) { + uint8_t sum = 0; + for (uint8_t i = 0; i < len; i++) { + sum ^= CRUMB(bytes[i], 0); + sum ^= CRUMB(bytes[i], 2); + sum ^= CRUMB(bytes[i], 4); + sum ^= CRUMB(bytes[i], 6); + } + sum &= mask; + return sum; +} +static uint16_t calcSumNibbleXor( uint8_t* bytes, uint8_t len, uint32_t mask) { + uint8_t sum = 0; + for (uint8_t i = 0; i < len; i++) { + sum ^= NIBBLE_LOW(bytes[i]); + sum ^= NIBBLE_HIGH(bytes[i]); + } + sum &= mask; + return sum; +} +static uint16_t calcSumByteXor( uint8_t* bytes, uint8_t len, uint32_t mask) { + uint8_t sum = 0; + for (uint8_t i = 0; i < len; i++) + sum ^= bytes[i]; + sum &= mask; + return sum; +} +static uint16_t calcSumByteAdd( uint8_t* bytes, uint8_t len, uint32_t mask) { + uint8_t sum = 0; + for (uint8_t i = 0; i < len; i++) + sum += bytes[i]; + sum &= mask; + return sum; +} +// Ones complement +static uint16_t calcSumByteAddOnes( uint8_t* bytes, uint8_t len, uint32_t mask) { + return (~calcSumByteAdd(bytes, len, mask) & mask); +} + +static uint16_t calcSumByteSub( uint8_t* bytes, uint8_t len, uint32_t mask) { + uint8_t sum = 0; + for (uint8_t i = 0; i < len; i++) + sum -= bytes[i]; + sum &= mask; + return sum; +} +static uint16_t calcSumByteSubOnes( uint8_t* bytes, uint8_t len, uint32_t mask){ + return (~calcSumByteSub(bytes, len, mask) & mask); +} +static uint16_t calcSumNibbleSub( uint8_t* bytes, uint8_t len, uint32_t mask) { + uint8_t sum = 0; + for (uint8_t i = 0; i < len; i++) { + sum -= NIBBLE_LOW(bytes[i]); + sum -= NIBBLE_HIGH(bytes[i]); + } + sum &= mask; + return sum; +} +static uint16_t calcSumNibbleSubOnes( uint8_t* bytes, uint8_t len, uint32_t mask) { + return (~calcSumNibbleSub(bytes, len, mask) & mask); +} + +// BSD shift checksum 8bit version +static uint16_t calcBSDchecksum8( uint8_t* bytes, uint8_t len, uint32_t mask){ + uint16_t sum = 0; + for(uint8_t i = 0; i < len; i++){ + sum = ((sum & 0xFF) >> 1) | ((sum & 0x1) << 7); // rotate accumulator + sum += bytes[i]; // add next byte + sum &= 0xFF; // + } + sum &= mask; + return sum; +} +// BSD shift checksum 4bit version +static uint16_t calcBSDchecksum4( uint8_t* bytes, uint8_t len, uint32_t mask){ + uint16_t sum = 0; + for(uint8_t i = 0; i < len; i++){ + sum = ((sum & 0xF) >> 1) | ((sum & 0x1) << 3); // rotate accumulator + sum += NIBBLE_HIGH(bytes[i]); // add high nibble + sum &= 0xF; // + sum = ((sum & 0xF) >> 1) | ((sum & 0x1) << 3); // rotate accumulator + sum += NIBBLE_LOW(bytes[i]); // add low nibble + sum &= 0xF; // + } + sum &= mask; + return sum; +} + +// measuring LFSR maximum length +int CmdAnalyseLfsr(const char *Cmd){ + + uint16_t start_state = 0; /* Any nonzero start state will work. */ + uint16_t lfsr = start_state; + //uint32_t period = 0; + + uint8_t iv = param_get8ex(Cmd, 0, 0, 16); + uint8_t find = param_get8ex(Cmd, 1, 0, 16); + + printf("LEGIC LFSR IV 0x%02X: \n", iv); + printf(" bit# | lfsr | ^0x40 | 0x%02X ^ lfsr \n",find); + for (uint8_t i = 0x01; i < 0x30; i += 1) { + //period = 0; + legic_prng_init(iv); + legic_prng_forward(i); + lfsr = legic_prng_get_bits(12); + + printf(" %02X | %03X | %03X | %03X \n",i, lfsr, 0x40 ^ lfsr, find ^ lfsr); + } + return 0; +} int CmdAnalyseLCR(const char *Cmd) { uint8_t data[50]; char cmdp = param_getchar(Cmd, 0); @@ -45,10 +225,311 @@ int CmdAnalyseLCR(const char *Cmd) { PrintAndLog("Target [%02X] requires final LRC XOR byte value: 0x%02X",data[len-1] ,finalXor); return 0; } +int CmdAnalyseCRC(const char *Cmd) { + + char cmdp = param_getchar(Cmd, 0); + if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_analyse_crc(); + + int len = strlen(Cmd); + if ( len & 1 ) return usage_analyse_crc(); + + // add 1 for null terminator. + uint8_t *data = malloc(len+1); + if ( data == NULL ) return 1; + + if ( param_gethex(Cmd, 0, data, len)) { + free(data); + return usage_analyse_crc(); + } + len >>= 1; + + //PrintAndLog("\nTests with '%s' hex bytes", sprint_hex(data, len)); + + PrintAndLog("\nTests of reflection. Two current methods in source code"); + PrintAndLog(" reflect(0x3e23L,3) is %04X == 0x3e26", reflect(0x3e23L,3) ); + PrintAndLog(" SwapBits(0x3e23L,3) is %04X == 0x3e26", SwapBits(0x3e23L,3) ); + PrintAndLog(" 0xB400 == %04X", reflect( (1 << 16 | 0xb400),16) ); + + // + // Test of CRC16, '123456789' string. + // + PrintAndLog("\nTests with '123456789' string"); + uint8_t dataStr[] = { 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39 }; + uint8_t legic8 = CRC8Legic(dataStr, sizeof(dataStr)); + + PrintAndLog("LEGIC: CRC16: %X", CRC16Legic(dataStr, sizeof(dataStr), legic8)); + + //these below has been tested OK. + PrintAndLog("Confirmed CRC Implementations"); + PrintAndLog("LEGIC: CRC8 : %X (0xC6 expected)", legic8); + PrintAndLog("MAXIM: CRC8 : %X (0xA1 expected)", CRC8Maxim(dataStr, sizeof(dataStr))); + PrintAndLog("DNP : CRC16: %X (0x82EA expected)", CRC16_DNP(dataStr, sizeof(dataStr))); + PrintAndLog("CCITT: CRC16: %X (0xE5CC expected)", CRC16_CCITT(dataStr, sizeof(dataStr))); + + PrintAndLog("ICLASS org: CRC16: %X (0x expected)",iclass_crc16( (char*)dataStr, sizeof(dataStr))); + PrintAndLog("ICLASS ice: CRC16: %X (0x expected)",CRC16_ICLASS(dataStr, sizeof(dataStr))); + + + + uint8_t dataStr1234[] = { 0x1,0x2,0x3,0x4}; + PrintAndLog("ISO15693 org: : CRC16: %X (0xF0B8 expected)", Iso15693Crc(dataStr1234, sizeof(dataStr1234))); + PrintAndLog("ISO15693 ice: : CRC16: %X (0xF0B8 expected)", CRC16_Iso15693(dataStr1234, sizeof(dataStr1234))); + + free(data); + return 0; +} +int CmdAnalyseCHKSUM(const char *Cmd){ + + uint8_t data[50]; + uint8_t cmdp = 0; + uint32_t mask = 0xFFFF; + bool errors = false; + bool useHeader = false; + int len = 0; + memset(data, 0x0, sizeof(data)); + + while(param_getchar(Cmd, cmdp) != 0x00) { + switch(param_getchar(Cmd, cmdp)) { + case 'b': + case 'B': + param_gethex_ex(Cmd, cmdp+1, data, &len); + if ( len%2 ) errors = true; + len >>= 1; + cmdp += 2; + break; + case 'm': + case 'M': + mask = param_get32ex(Cmd, cmdp+1, 0, 16); + cmdp += 2; + break; + case 'v': + case 'V': + useHeader = true; + cmdp++; + break; + case 'h': + case 'H': + return usage_analyse_checksum(); + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) break; + } + //Validations + if(errors) return usage_analyse_checksum(); + + if (useHeader) { + PrintAndLog(" add | sub | add 1's compl | sub 1's compl | xor"); + PrintAndLog("byte nibble crumb | byte nibble | byte nibble cumb | byte nibble | byte nibble cumb | BSD |"); + PrintAndLog("------------------+-------------+------------------+-----------------+--------------------"); + } + PrintAndLog("0x%X 0x%X 0x%X | 0x%X 0x%X | 0x%X 0x%X 0x%X | 0x%X 0x%X | 0x%X 0x%X 0x%X | 0x%X 0x%X |\n", + calcSumByteAdd(data, len, mask) + , calcSumNibbleAdd(data, len, mask) + , calcSumCrumbAdd(data, len, mask) + , calcSumByteSub(data, len, mask) + , calcSumNibbleSub(data, len, mask) + , calcSumByteAddOnes(data, len, mask) + , calcSumNibbleAddOnes(data, len, mask) + , calcSumCrumbAddOnes(data, len, mask) + , calcSumByteSubOnes(data, len, mask) + , calcSumNibbleSubOnes(data, len, mask) + , calcSumByteXor(data, len, mask) + , calcSumNibbleXor(data, len, mask) + , calcSumCrumbXor(data, len, mask) + , calcBSDchecksum8(data, len, mask) + , calcBSDchecksum4(data, len, mask) + ); + return 0; +} + +int CmdAnalyseDates(const char *Cmd){ + // look for datestamps in a given array of bytes + PrintAndLog("To be implemented. Feel free to contribute!"); + return 0; +} +int CmdAnalyseTEASelfTest(const char *Cmd){ + + uint8_t v[8], v_le[8]; + memset(v, 0x00, sizeof(v)); + memset(v_le, 0x00, sizeof(v_le)); + uint8_t* v_ptr = v_le; + + uint8_t cmdlen = strlen(Cmd); + cmdlen = ( sizeof(v)<<2 < cmdlen ) ? sizeof(v)<<2 : cmdlen; + + if ( param_gethex(Cmd, 0, v, cmdlen) > 0 ){ + PrintAndLog("can't read hex chars, uneven? :: %u", cmdlen); + return 1; + } + + SwapEndian64ex(v , 8, 4, v_ptr); + + // ENCRYPTION KEY: + uint8_t key[16] = {0x55,0xFE,0xF6,0x30,0x62,0xBF,0x0B,0xC1,0xC9,0xB3,0x7C,0x34,0x97,0x3E,0x29,0xFB }; + uint8_t keyle[16]; + uint8_t* key_ptr = keyle; + SwapEndian64ex(key , sizeof(key), 4, key_ptr); + + PrintAndLog("TEST LE enc| %s", sprint_hex(v_ptr, 8)); + + tea_decrypt(v_ptr, key_ptr); + PrintAndLog("TEST LE dec | %s", sprint_hex_ascii(v_ptr, 8)); + + tea_encrypt(v_ptr, key_ptr); + tea_encrypt(v_ptr, key_ptr); + PrintAndLog("TEST enc2 | %s", sprint_hex_ascii(v_ptr, 8)); + + return 0; +} + +int CmdAnalyseA(const char *Cmd){ +/* +piwi +// uid(2e086b1a) nt(230736f6) ks(0b0008000804000e) nr(000000000) +// uid(2e086b1a) nt(230736f6) ks(0e0b0e0b090c0d02) nr(000000001) +// uid(2e086b1a) nt(230736f6) ks(0e05060e01080b08) nr(000000002) +uint64_t d1[] = {0x2e086b1a, 0x230736f6, 0x0000001, 0x0e0b0e0b090c0d02}; +uint64_t d2[] = {0x2e086b1a, 0x230736f6, 0x0000002, 0x0e05060e01080b08}; + +// uid(17758822) nt(c0c69e59) ks(080105020705040e) nr(00000001) +// uid(17758822) nt(c0c69e59) ks(01070a05050c0705) nr(00000002) +uint64_t d1[] = {0x17758822, 0xc0c69e59, 0x0000001, 0x080105020705040e}; +uint64_t d2[] = {0x17758822, 0xc0c69e59, 0x0000002, 0x01070a05050c0705}; + +// uid(6e442129) nt(8f699195) ks(090d0b0305020f02) nr(00000001) +// uid(6e442129) nt(8f699195) ks(03030508030b0c0e) nr(00000002) +// uid(6e442129) nt(8f699195) ks(02010f030c0d050d) nr(00000003) +// uid(6e442129) nt(8f699195) ks(00040f0f0305030e) nr(00000004) +uint64_t d1[] = {0x6e442129, 0x8f699195, 0x0000001, 0x090d0b0305020f02}; +uint64_t d2[] = {0x6e442129, 0x8f699195, 0x0000004, 0x00040f0f0305030e}; + +uid(3e172b29) nt(039b7bd2) ks(0c0e0f0505080800) nr(00000001) +uid(3e172b29) nt(039b7bd2) ks(0e06090d03000b0f) nr(00000002) +*/ + uint64_t key = 0; + uint64_t d1[] = {0x3e172b29, 0x039b7bd2, 0x0000001, 0x0c0e0f0505080800}; + uint64_t d2[] = {0x3e172b29, 0x039b7bd2, 0x0000002, 0x0e06090d03000b0f}; + + nonce2key_ex(0, 0 , d1[0], d1[1], d1[2], d1[3], &key); + nonce2key_ex(0, 0 , d2[0], d2[1], d2[2], d2[3], &key); + return 0; +} + +static void permute(uint8_t *data, uint8_t len, uint8_t *output){ +#define KEY_SIZE 8 + + if ( len > KEY_SIZE ) { + for(uint8_t m = 0; m < len; m += KEY_SIZE){ + permute(data+m, KEY_SIZE, output+m); + } + return; + } + if ( len != KEY_SIZE ) { + printf("wrong key size\n"); + return; + } + uint8_t i,j,p, mask; + for( i=0; i < KEY_SIZE; ++i){ + p = 0; + mask = 0x80 >> i; + for( j=0; j < KEY_SIZE; ++j){ + p >>= 1; + if (data[j] & mask) + p |= 0x80; + } + output[i] = p; + } +} +static void permute_rev(uint8_t *data, uint8_t len, uint8_t *output){ + permute(data, len, output); + permute(output, len, data); + permute(data, len, output); +} +static void simple_crc(uint8_t *data, uint8_t len, uint8_t *output){ + uint8_t crc = 0; + for( uint8_t i=0; i < len; ++i){ + // seventh byte contains the crc. + if ( (i & 0x7) == 0x7 ) { + output[i] = crc ^ 0xFF; + crc = 0; + } else { + output[i] = data[i]; + crc ^= data[i]; + } + } +} +// DES doesn't use the MSB. +static void shave(uint8_t *data, uint8_t len){ + for (uint8_t i=0; i>= 1; + + memcpy(key, data, 8); + + if ( isReverse ) { + generate_rev(data, len); + permutekey_rev(key, key_std_format); + printf(" holiman iclass key | %s \n", sprint_hex(key_std_format, 8)); + } + else { + generate(data, len); + permutekey(key, key_iclass_format); + printf(" holiman std key | %s \n", sprint_hex(key_iclass_format, 8)); + } + return 0; +} static command_t CommandTable[] = { - {"help", CmdHelp, 1, "This help"}, - {"lcr", CmdAnalyseLCR, 0, "Generate final byte for XOR LRC"}, + {"help", CmdHelp, 1, "This help"}, + {"lcr", CmdAnalyseLCR, 1, "Generate final byte for XOR LRC"}, + {"crc", CmdAnalyseCRC, 1, "Stub method for CRC evaluations"}, + {"chksum", CmdAnalyseCHKSUM, 1, "Checksum with adding, masking and one's complement"}, + {"dates", CmdAnalyseDates, 1, "Look for datestamps in a given array of bytes"}, + {"tea", CmdAnalyseTEASelfTest, 1, "Crypto TEA test"}, + {"lfsr", CmdAnalyseLfsr, 1, "LFSR tests"}, + {"a", CmdAnalyseA, 1, "num bits test"}, + {"hid", CmdAnalyseHid, 1, "Permute function from 'heart of darkness' paper"}, {NULL, NULL, 0, NULL} };