Update README.md

[proxmark3-svn] / client / cmdanalyse.c

diff --git a/client/cmdanalyse.c b/client/cmdanalyse.c
index fb084f433083545b428ff348ae687c91880a685f..32309c1c229135e89479874c28a860ff4c99fa4e 100644 (file)
--- a/client/cmdanalyse.c
+++ b/client/cmdanalyse.c
@@ -26,7 +26,6 @@ int usage_analyse_lcr(void) {
        PrintAndLog("expected output: Target (BA) requires final LRC XOR byte value: 5A");
        return 0;
 }
        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");
 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");


@@ -42,7 +41,6 @@ int usage_analyse_checksum(void) {
        PrintAndLog("expected output: 0x61");
        return 0;
 }
        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("");
 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("");


@@ -55,6 +53,20 @@ int usage_analyse_crc(void){
        PrintAndLog("           analyse crc 137AF00A0A0D");
        return 0;
 }
        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] <r|f> <bytes>");
+       PrintAndLog("Options:");
+       PrintAndLog("           h          This help");
+       PrintAndLog("           r          reverse permuted key");
+       PrintAndLog("           f          permute key");
+       PrintAndLog("           <bytes>    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;
 
 static uint8_t calculateLRC( uint8_t* bytes, uint8_t len) {
     uint8_t LRC = 0;


@@ -89,6 +101,22 @@ static uint8_t calcSumNibbleAdd( uint8_t* bytes, uint8_t len, uint32_t mask) {
 static uint8_t calcSumNibbleAddOnes( uint8_t* bytes, uint8_t len, uint32_t mask){
        return ~calcSumNibbleAdd(bytes, len, mask);
 }
 static uint8_t calcSumNibbleAddOnes( uint8_t* bytes, uint8_t len, uint32_t mask){
        return ~calcSumNibbleAdd(bytes, len, mask);
 }

+static uint8_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 uint8_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 uint8_t calcSumByteAdd( uint8_t* bytes, uint8_t len, uint32_t mask) {
     uint8_t sum = 0;
 
 static uint8_t calcSumByteAdd( uint8_t* bytes, uint8_t len, uint32_t mask) {
     uint8_t sum = 0;


@@ -102,6 +130,8 @@ static uint8_t calcSumByteAddOnes( uint8_t* bytes, uint8_t len, uint32_t mask) {
        return ~calcSumByteAdd(bytes, len, mask);
 }
 
        return ~calcSumByteAdd(bytes, len, mask);
 }
 

+
+

 static uint8_t calcSumByteSub( uint8_t* bytes, uint8_t len, uint32_t mask) {
     uint8_t sum = 0;
     for (uint8_t i = 0; i < len; i++)
 static uint8_t calcSumByteSub( uint8_t* bytes, uint8_t len, uint32_t mask) {
     uint8_t sum = 0;
     for (uint8_t i = 0; i < len; i++)


@@ -265,6 +295,10 @@ int CmdAnalyseCHKSUM(const char *Cmd){
        PrintAndLog("Byte Subtract   | 0x%X", calcSumByteSubOnes(data, len, mask));
        PrintAndLog("Nibble Subtract | 0x%X", calcSumNibbleSubOnes(data, len, mask));
        
        PrintAndLog("Byte Subtract   | 0x%X", calcSumByteSubOnes(data, len, mask));
        PrintAndLog("Nibble Subtract | 0x%X", calcSumNibbleSubOnes(data, len, mask));
        

+       PrintAndLog("\nXOR");
+       PrintAndLog("Byte Xor   | 0x%X", calcSumByteXor(data, len, mask));
+       PrintAndLog("Nibble Xor   | 0x%X", calcSumNibbleXor(data, len, mask));
+       

        return 0;
 }
 
        return 0;
 }
 


@@ -309,24 +343,140 @@ int CmdAnalyseTEASelfTest(const char *Cmd){
 }
 
 int CmdAnalyseA(const char *Cmd){
 }
 
 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};

        
        

-// uid(2e086b1a) nt(230736f6) par(0000000000000000) ks(0b0008000804000e) nr(000000000)
-// uid(2e086b1a) nt(230736f6) par(0000000000000000) ks(0e0b0e0b090c0d02) nr(000000001)
-// uid(2e086b1a) nt(230736f6) par(0000000000000000) ks(0e05060e01080b08) nr(000000002)
-       uint32_t uid = 0x2e086b1a, nt = 0x230736f6, nr = 0x000000001;
-       uint64_t ks_list = 0x0e0b0e0b090c0d02, r_key = 0;
+       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;
+}

 
 

-       nonce2key_ex(0, 0 , uid, nt, nr, ks_list, &r_key);
+static void permute(uint8_t *data, uint8_t len, uint8_t *output){      
+#define KEY_SIZE 8

 
 

-       nr = 0x000000002;
-       ks_list = 0x0e05060e01080b08;
-       nonce2key_ex(0, 0 , uid, nt, nr, ks_list, &r_key);
+       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<len; ++i)
+               data[i] &= 0xFE;
+}
+static void generate_rev(uint8_t *data, uint8_t len) {
+       uint8_t *key = calloc(len,1);   
+       printf("input permuted key | %s \n", sprint_hex(data, len));
+       permute_rev(data, len, key);
+       printf("    unpermuted key | %s \n", sprint_hex(key, len));
+       shave(key, len);
+       printf("               key | %s \n", sprint_hex(key, len));
+       free(key);      
+}
+static void generate(uint8_t *data, uint8_t len) {
+       uint8_t *key = calloc(len,1);
+       uint8_t *pkey = calloc(len,1);  
+       printf("    input key | %s \n", sprint_hex(data, len));
+       permute(data, len, pkey);
+       printf(" permuted key | %s \n", sprint_hex(pkey, len));
+       simple_crc(pkey, len, key );
+       printf("   CRC'ed key | %s \n", sprint_hex(key, len));
+       free(key);
+       free(pkey);
+}
+int CmdAnalyseHid(const char *Cmd){
+
+       uint8_t key[8] = {0};   
+       uint8_t key_std_format[8] = {0};
+       uint8_t key_iclass_format[8] = {0};
+       uint8_t data[16] = {0};
+       bool isReverse = FALSE;
+       int len = 0;
+       char cmdp = param_getchar(Cmd, 0);
+       if (strlen(Cmd) == 0|| cmdp == 'h' || cmdp == 'H') return usage_analyse_hid();
+               
+       if ( cmdp == 'r' || cmdp == 'R' ) 
+               isReverse = TRUE;
+       
+       param_gethex_ex(Cmd, 1, data, &len);
+       if ( len%2 ) return usage_analyse_hid();
+       
+       len >>= 1;      
+
+       memcpy(key, data, 8);

 
 

-       printf("Found valid key: %012"llx" \n", r_key); 
+       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;
 }
 
        return 0;
 }
 

-

 static command_t CommandTable[] = {
        {"help",        CmdHelp,            1, "This help"},
        {"lcr",         CmdAnalyseLCR,          1, "Generate final byte for XOR LRC"},
 static command_t CommandTable[] = {
        {"help",        CmdHelp,            1, "This help"},
        {"lcr",         CmdAnalyseLCR,          1, "Generate final byte for XOR LRC"},


@@ -336,6 +486,7 @@ static command_t CommandTable[] = {
        {"tea",         CmdAnalyseTEASelfTest,  1, "Crypto TEA test"},
        {"lfsr",        CmdAnalyseLfsr,         1,      "LFSR tests"},
        {"a",           CmdAnalyseA,            1,      "num bits test"},
        {"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}
 };
 
        {NULL, NULL, 0, NULL}
 };