diff --git a/README.md b/README.md
index e7311e3..3bde4c5 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,7 @@ Great thanks to him.
     make
     make clean
     cp -r ../lang ./
+    cp ../configs.json ./
     ./Proxmark3GUI
 
 ***
diff --git a/common/pm3process.cpp b/common/pm3process.cpp
index c4df2af..3a7b405 100644
--- a/common/pm3process.cpp
+++ b/common/pm3process.cpp
@@ -109,7 +109,7 @@ void PM3Process::onTimeout() //when the proxmark3 client is unexpectedly termina
 {
 //    isBusy() is a deprecated function.
 //    It will always return false on Raspbian.
-//    SerialListener need to be removed.
+//    SerialListener needs to be removed.
 //
 //    qDebug()<<portInfo->isBusy();
 //    if(!portInfo->isBusy())
diff --git a/configs.json b/configs.json
new file mode 100644
index 0000000..7d67a94
--- /dev/null
+++ b/configs.json
@@ -0,0 +1,52 @@
+{
+    "mifare classic": {
+        "nested":{
+            "cmd":"hf mf nested --<card type> --blk <block> -<key type> -k <key>",
+            "card type": {
+                "mini": "mini",
+                "1k": "1k",
+                "2k": "2k",
+                "4k": "4k"
+            },
+            "key type":{
+                "A": "a",
+                "B": "b"
+            },
+            "key pattern": "\\|\\s*\\d{3}\\s*\\|\\s*.+?\\s*\\|\\s*.+?\\s*\\|\\s*.+?\\s*\\|\\s*.+?\\s*\\|"
+        },
+        "chk": {
+            "cmd": "hf mf chk --<card type>",
+            "card type": {
+                "mini": "mini",
+                "1k": "1k",
+                "2k": "2k",
+                "4k": "4k"
+            },
+            "key pattern": "\\|\\s*\\d{3}\\s*\\|\\s*.+?\\s*\\|\\s*.+?\\s*\\|\\s*.+?\\s*\\|\\s*.+?\\s*\\|"
+        },
+        "info": {
+            "cmd": "hf 14a info"
+        },
+        "sniff": {
+            "cmd": "hf sniff"
+        },
+        "sniff 14a": {
+            "cmd": "hf 14a sniff"
+        },
+        "list": {
+            "cmd": "trace list -t mf"
+        },
+        "dump": {
+            "cmd": "hf mf dump"
+        },
+        "restore": {
+            "cmd": "hf mf restore"
+        },
+        "wipe emulator": {
+            "cmd": "hf mf eclr"
+        },
+        "wipe Magic Card": {
+            "cmd": "hf mf cwipe"
+        }
+    }
+}
\ No newline at end of file
diff --git a/module/mifare.cpp b/module/mifare.cpp
index 42bd333..b9346ab 100644
--- a/module/mifare.cpp
+++ b/module/mifare.cpp
@@ -87,31 +87,37 @@ Mifare::Mifare(Ui::MainWindow *ui, Util *addr, QWidget *parent): QObject(parent)
     keyPattern = new QRegularExpression("\\|\\s*\\d{3}\\s*\\|\\s*.+?\\s*\\|\\s*.+?\\s*\\|");
 }
 
+void Mifare::setConfigMap(const QVariantMap& configMap)
+{
+    this->configMap = configMap;
+    qDebug() << configMap;
+}
+
+// TODO: change result type QString->QMap
 QString Mifare::info(bool isRequiringOutput)
 {
-    if(Util::getClientType() == Util::CLIENTTYPE_OFFICIAL || Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
+    QVariantMap config = configMap["info"].toMap();
+    if(isRequiringOutput)
     {
-        if(isRequiringOutput)
-        {
-            QString result = util->execCMDWithOutput("hf 14a info", 500);
-            int begin, end;
-            begin = result.indexOf("UID");
-            if(begin != -1)
-            {
-                end = result.indexOf("SAK", begin);
-                end = result.indexOf("\n", end);
-                return result.mid(begin, end - begin + 1);
-            }
-        }
-        else
+        QString result = util->execCMDWithOutput(config["cmd"].toString(), 500);
+        int begin, end;
+        begin = result.indexOf("UID");
+        if(begin != -1)
         {
-            util->execCMD("hf 14a info");
-            Util::gotoRawTab();
+            end = result.indexOf("SAK", begin);
+            end = result.indexOf("\n", end);
+            return result.mid(begin, end - begin + 1);
         }
     }
+    else
+    {
+        util->execCMD(config["cmd"].toString());
+        Util::gotoRawTab();
+    }
     return "";
 }
 
+// TODO: Remove ClientType() detect, detect valid key by [0-9A-Fa-f]
 void Mifare::chk()
 {
     QRegularExpressionMatch reMatch;
@@ -148,14 +154,18 @@ void Mifare::chk()
     }
     else if(Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
     {
+        QVariantMap config = configMap["chk"].toMap();
+        QString cmd = config["cmd"].toString();
+        QRegularExpression keyPattern = QRegularExpression(config["key pattern"].toString());
+        cmd.replace("<card type>", config["card type"].toMap()[cardType.typeText].toString());
+
         result = util->execCMDWithOutput(
-                     "hf mf chk --"
-                     + cardType.typeText,
-                     Util::ReturnTrigger(1000 + cardType.sector_size * 200, {"No valid", keyPattern_res->pattern()}));
+                     cmd,
+                     Util::ReturnTrigger(1000 + cardType.sector_size * 200, {"No valid", keyPattern.pattern()}));
         qDebug() << "mf_chk_iceman_result" << result;
         for(int i = 0; i < cardType.sector_size; i++)
         {
-            reMatch = keyPattern_res->match(result, offset);
+            reMatch = keyPattern.match(result, offset);
             offset = reMatch.capturedStart();
             if(reMatch.hasMatch())
             {
@@ -179,6 +189,9 @@ void Mifare::chk()
 
 void Mifare::nested()
 {
+    QVariantMap config = configMap["nested"].toMap();
+    QString cmd = config["cmd"].toString();
+    QRegularExpression keyPattern = QRegularExpression(config["key pattern"].toString());
     QRegularExpressionMatch reMatch;
     QString result;
     int offset = 0;
@@ -193,32 +206,33 @@ void Mifare::nested()
     }
     else if(Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
     {
-        QString knownKeyInfo = "";
+        QString knownKey, knownKeyType;
+        int knownKeySector = -1;
         for(int i = 0; i < cardType.sector_size; i++)
         {
             if(data_isKeyValid(keyAList->at(i)))
             {
-                knownKeyInfo = " --blk " + QString::number(i * 4) + " -a -k " + keyAList->at(i);
+                knownKeyType = "A";
+                knownKey = keyAList->at(i);
+                knownKeySector = i;
                 break;
             }
-        }
-        if(knownKeyInfo == "")
-        {
-            for(int i = 0; i < cardType.sector_size; i++)
+            else if(data_isKeyValid(keyBList->at(i)))
             {
-                if(data_isKeyValid(keyBList->at(i)))
-                {
-                    knownKeyInfo = " --blk " + QString::number(i * 4) + " -b -k " + keyBList->at(i);
-                    break;
-                }
+                knownKeyType = "B";
+                knownKey = keyBList->at(i);
+                knownKeySector = i;
+                break;
             }
         }
-        if(knownKeyInfo != "")
+        if(knownKeySector != -1)
         {
+            cmd.replace("<card type>", config["card type"].toMap()[cardType.typeText].toString());
+            cmd.replace("<block>", QString::number(cardType.blks[knownKeySector]));
+            cmd.replace("<key type>", config["key type"].toMap()[knownKeyType].toString());
+            cmd.replace("<key>", knownKey);
             result = util->execCMDWithOutput(
-                         "hf mf nested --"
-                         + cardType.typeText
-                         + knownKeyInfo,
+                         cmd,
                          Util::ReturnTrigger(15000, {"Can't authenticate", keyPattern_res->pattern()}));
         }
         else
@@ -229,7 +243,7 @@ void Mifare::nested()
     }
     for(int i = 0; i < cardType.sector_size; i++)
     {
-        reMatch = keyPattern_res->match(result, offset);
+        reMatch = keyPattern.match(result, offset);
         offset = reMatch.capturedStart();
         if(reMatch.hasMatch())
         {
@@ -270,30 +284,33 @@ void Mifare::darkside()
 
 void Mifare::sniff()
 {
+    QVariantMap config = configMap["sniff"].toMap();
     if(Util::getClientType() == Util::CLIENTTYPE_OFFICIAL)
         util->execCMD("hf mf sniff");
     else if(Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
-        util->execCMD("hf sniff");
+        util->execCMD(config["cmd"].toString());
 
     Util::gotoRawTab();
 }
 
 void Mifare::sniff14a()
 {
+    QVariantMap config = configMap["sniff 14a"].toMap();
     if(Util::getClientType() == Util::CLIENTTYPE_OFFICIAL)
         util->execCMD("hf 14a snoop");
     else if(Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
-        util->execCMD("hf 14a sniff");
+        util->execCMD(config["cmd"].toString());
 
     Util::gotoRawTab();
 }
 
 void Mifare::list()
 {
+    QVariantMap config = configMap["sniff 14a"].toMap();
     if(Util::getClientType() == Util::CLIENTTYPE_OFFICIAL)
         util->execCMD("hf list mf");
     else if(Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
-        util->execCMD("trace list -t mf");
+        util->execCMD(config["cmd"].toString());
 
     Util::gotoRawTab();
 }
@@ -759,15 +776,15 @@ void Mifare::writeSelected(TargetType targetType)
 
 void Mifare::dump()
 {
-    if(Util::getClientType() == Util::CLIENTTYPE_OFFICIAL || Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
-        util->execCMD("hf mf dump");
+    QVariantMap config = configMap["dump"].toMap();
+    util->execCMD(config["cmd"].toString());
     Util::gotoRawTab();
 }
 
 void Mifare::restore()
 {
-    if(Util::getClientType() == Util::CLIENTTYPE_OFFICIAL || Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
-        util->execCMD("hf mf restore");
+    QVariantMap config = configMap["restore"].toMap();
+    util->execCMD(config["cmd"].toString());
     Util::gotoRawTab();
 }
 
@@ -782,7 +799,8 @@ void Mifare::wipeC()
     }
     else if(Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
     {
-        util->execCMD("hf mf cwipe");
+        QVariantMap config = configMap["wipe Magic Card"].toMap();
+        util->execCMD(config["cmd"].toString());
     }
     Util::gotoRawTab();
 }
@@ -833,8 +851,8 @@ void Mifare::lockC()
 
 void Mifare::wipeE()
 {
-    if(Util::getClientType() == Util::CLIENTTYPE_OFFICIAL || Util::getClientType() == Util::CLIENTTYPE_ICEMAN)
-        util->execCMD("hf mf eclr");
+    QVariantMap config = configMap["wipe emulator"].toMap();
+    util->execCMD(config["cmd"].toString());
 }
 
 void Mifare::simulate()
diff --git a/module/mifare.h b/module/mifare.h
index 18a86e3..7fd26b7 100644
--- a/module/mifare.h
+++ b/module/mifare.h
@@ -11,6 +11,7 @@
 #include <QStringList>
 #include <QRegularExpression>
 #include <QMessageBox>
+#include <QJsonObject>
 class Mifare : public QObject
 {
     Q_OBJECT
@@ -113,6 +114,7 @@ public:
     static bool data_isACBitsValid(const QString& text, QList<quint8> *returnHalfBytes = nullptr);
     QString data_getUID();
     quint16 getTrailerBlockId(quint8 sectorId, qint8 cardTypeId = -1); // -1: use current cardtype
+    void setConfigMap(const QVariantMap& configMap);
 public slots:
 signals:
 
@@ -121,6 +123,8 @@ private:
     Ui::MainWindow *ui;
     Util* util;
 
+    QVariantMap configMap;
+
     QStringList* keyAList;
     QStringList* keyBList;
     QStringList* dataList;
diff --git a/ui/mainwindow.cpp b/ui/mainwindow.cpp
index 13f5fae..9875138 100644
--- a/ui/mainwindow.cpp
+++ b/ui/mainwindow.cpp
@@ -1,6 +1,8 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 
+#include <QJsonDocument>
+
 MainWindow::MainWindow(QWidget *parent):
     QMainWindow(parent)
     , ui(new Ui::MainWindow)
@@ -38,6 +40,16 @@ MainWindow::MainWindow(QWidget *parent):
     mifare = new Mifare(ui, util, this);
     lf = new LF(ui, util, this);
 
+    QFile configList("configs.json");
+    if(!configList.open(QFile::ReadOnly | QFile::Text))
+    {
+        ;
+    }
+
+    QByteArray configData = configList.readAll();
+    QJsonDocument configJson(QJsonDocument::fromJson(configData));
+    mifare->setConfigMap(configJson.object()["mifare classic"].toObject().toVariantMap());
+
     keyEventFilter = new MyEventFilter(QEvent::KeyPress);
     resizeEventFilter = new MyEventFilter(QEvent::Resize);