Experimeting with finding the "WDT_HIT" bug in "Hf mf mifare", which not shows if...

[proxmark3-svn] / client / cmdhfmfu.c

diff --git a/client/cmdhfmfu.c b/client/cmdhfmfu.c
index 7aa16b89eb86f2bedb49c8477d9d541c61ab9503..cc2e05d6b45c303790e8bef4ca619aa746bd74a9 100644 (file)
--- a/client/cmdhfmfu.c
+++ b/client/cmdhfmfu.c
@@ -100,6 +100,25 @@ uint32_t ul_ev1_pwdgenB(uint8_t* uid) {
        return (uint32_t)bytes_to_num(pwd, 4);
 }
 
+// Certain pwd generation algo nickname C.
+uint32_t ul_ev1_pwdgenC(uint8_t* uid){
+       uint32_t pwd = 0;
+       uint8_t base[] = {
+               0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x28,
+               0x63, 0x29, 0x20, 0x43, 0x6f, 0x70, 0x79, 0x72,
+               0x69, 0x67, 0x68, 0x74, 0x20, 0x4c, 0x45, 0x47,
+               0x4f, 0x20, 0x32, 0x30, 0x31, 0x34, 0xaa, 0xaa
+       };
+
+       memcpy(base, uid, 7);
+
+       for (int i = 0; i < 32; i += 4) {
+               uint32_t b = *(uint32_t *)(base + i);
+               pwd = b + ROTR(pwd, 25) + ROTR(pwd, 10) - pwd;
+       }
+       return BSWAP_32(pwd);
+}
+
 void ul_ev1_pwdgen_selftest(){
        
        uint8_t uid1[] = {0x04,0x11,0x12,0x11,0x12,0x11,0x10};
@@ -109,6 +128,10 @@ void ul_ev1_pwdgen_selftest(){
        uint8_t uid2[] = {0x04,0x1f,0x98,0xea,0x1e,0x3e,0x81};          
        uint32_t pwd2 = ul_ev1_pwdgenB(uid2);
        PrintAndLog("UID | %s | %08X | %s", sprint_hex(uid2,7), pwd2, (pwd2 == 0x5fd37eca)?"OK":"->5fd37eca<--");
+
+       uint8_t uid3[] = {0x04,0x62, 0xB6, 0x8A, 0xB4, 0x42, 0x80};
+       uint32_t pwd3 = ul_ev1_pwdgenC(uid3);
+       PrintAndLog("UID | %s | %08X | %s", sprint_hex(uid3,7), pwd3, (pwd3 == 0x5a349515)?"OK":"->5a349515<--");
        return;
 }
 
@@ -915,6 +938,14 @@ int CmdHF14AMfUInfo(const char *Cmd){
                                PrintAndLog("Found a default password: %s || Pack: %02X %02X",sprint_hex(key, 4), pack[0], pack[1]);
                        }
                        if (!ul_auth_select( &card, tagtype, hasAuthKey, authkeyptr, pack, sizeof(pack))) return -1;
+
+                       // test pwd gen C
+                       num_to_bytes( ul_ev1_pwdgenC(card.uid), 4, key);
+                       len = ulev1_requestAuthentication(key, pack, sizeof(pack));
+                       if (len >= 1) {
+                               PrintAndLog("Found a default password: %s || Pack: %02X %02X",sprint_hex(key, 4), pack[0], pack[1]);
+                       }
+                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authkeyptr, pack, sizeof(pack))) return -1;                    
                        
                        for (uint8_t i = 0; i < KEYS_PWD_COUNT; ++i ) {
                                key = default_pwd_pack[i];
@@ -1650,7 +1681,7 @@ int CmdHF14AMfucAuth(const char *Cmd){
        //Change key to user defined one
        if (cmdp == 'k' || cmdp == 'K'){
                keyNo = param_get8(Cmd, 1);
-               if(keyNo > KEYS_3DES_COUNT) 
+               if(keyNo >= KEYS_3DES_COUNT) 
                        errors = true;
        }
 
@@ -1876,7 +1907,6 @@ int CmdHF14AMfucSetUid(const char *Cmd){
 int CmdHF14AMfuGenDiverseKeys(const char *Cmd){
 
        uint8_t uid[4]; 
-       
        char cmdp = param_getchar(Cmd, 0);
        if (strlen(Cmd) == 0  || cmdp == 'h' || cmdp == 'H') return usage_hf_mfu_gendiverse();
 
@@ -1995,7 +2025,8 @@ static command_t CommandTable[] =
 };
 
 int CmdHFMFUltra(const char *Cmd){
-       WaitForResponseTimeout(CMD_ACK,NULL,100);
+       clearCommandBuffer();
+       //WaitForResponseTimeout(CMD_ACK,NULL,100);
        CmdsParse(CommandTable, Cmd);
        return 0;
 }