Updated G-MemZ, added universal macOS binary, improved flash rc4 crack

G-Earth/src/main/java/gearth/protocol/memory/Rc4Obtainer.java

@@ -76,9 +76,7 @@ public class Rc4Obtainer {
                 @Override
                 public void onPacket() {
                     if (handler.isEncryptedStream()) {
-                        final boolean isShockwave = handler instanceof ShockwavePacketOutgoingHandler;
+                        if (counter.incrementAndGet() != 3) {
-
-                        if (isShockwave && counter.incrementAndGet() != 3) {
                             return;
                         }
 
@@ -99,25 +97,11 @@ public class Rc4Obtainer {
         logger.info("Caught encrypted packet, attempting to find decryption keys");
 
         final HabboClient client = HabboClientFactory.get(hConnection);
-        if (client == null) {
-            logger.info("Unsupported platform / client combination, aborting connection");
-            hConnection.abort();
-            return;
-        }
 
         new Thread(() -> {
             final long startTime = System.currentTimeMillis();
 
-            boolean worked = false;
+            if (!onSendFirstEncryptedMessage(flashPacketHandler, client.getRC4Tables())) {
-            int i = 0;
-            while (!worked && i < 4) {
-                worked = (i % 2 == 0) ?
-                        onSendFirstEncryptedMessage(flashPacketHandler, client.getRC4cached()) :
-                        onSendFirstEncryptedMessage(flashPacketHandler, client.getRC4possibilities());
-                i++;
-            }
-
-            if (!worked) {
                 try {
                     Platform.runLater(Rc4Obtainer::showErrorDialog);
                 } catch (IllegalStateException e) {
@@ -153,8 +137,16 @@ public class Rc4Obtainer {
         }
 
         if (packetHandler instanceof FlashPacketHandler) {
+            // Fast-path.
             for (byte[] possible : potentialRC4tables) {
-                if (bruteFlash(packetHandler, encBuffer, possible)) {
+                if (bruteFlashFast(packetHandler, encBuffer, possible)) {
+                    return true;
+                }
+            }
+
+            // Slow-path.
+            for (byte[] possible : potentialRC4tables) {
+                if (bruteFlashSlow(packetHandler, encBuffer, possible)) {
                     return true;
                 }
             }
@@ -178,11 +170,13 @@ public class Rc4Obtainer {
     }
 
     private boolean bruteShockwaveHeaderFast(EncryptedPacketHandler packetHandler, byte[] encBuffer, byte[] tableState) {
-        final int HardcodedQ = 164;
+        // Table state Q starts at 152 after premixing.
+        // Add 12 for the 3 headers being encrypted and you get 164.
+        final int EstimatedQ = 164;
 
         for (int j = 0; j < 256; j++) {
-            if (bruteShockwaveHeader(packetHandler, encBuffer, tableState, HardcodedQ, j)) {
+            if (bruteShockwaveHeader(packetHandler, encBuffer, tableState, EstimatedQ, j)) {
-                logger.debug("Brute forced with fast path");
+                logger.debug("Brute forced shockwave with fast path");
                 return true;
             }
         }
@@ -194,7 +188,7 @@ public class Rc4Obtainer {
         for (int q = 0; q < 256; q++) {
             for (int j = 0; j < 256; j++) {
                 if (bruteShockwaveHeader(packetHandler, encBuffer, tableState, q, j)) {
-                    logger.debug("Brute forced with slow path");
+                    logger.debug("Brute forced shockwave with slow path");
                     return true;
                 }
             }
@@ -237,43 +231,60 @@ public class Rc4Obtainer {
         return false;
     }
 
-    private boolean bruteFlash(EncryptedPacketHandler flashPacketHandler, byte[] encBuffer, byte[] possible) {
+    private boolean bruteFlashFast(EncryptedPacketHandler packetHandler, byte[] encBuffer, byte[] tableState) {
+        final int EstimatedQ = encBuffer.length % 256;
 
-        try {
+        for (int j = 0; j < 256; j++) {
-            for (int i = 0; i < 256; i++) {
+            if (bruteFlash(packetHandler, encBuffer, tableState, EstimatedQ, j)) {
-                for (int j = 0; j < 256; j++) {
+                logger.debug("Brute forced flash with fast path");
+                return true;
+            }
+        }
 
-                    final byte[] keycpy = Arrays.copyOf(possible, possible.length);
+        return false;
-                    final RC4 rc4Tryout = new RC4(keycpy, i, j);
+    }
 
-                    if (flashPacketHandler.getDirection() == HMessage.Direction.TOSERVER)
+    private boolean bruteFlashSlow(EncryptedPacketHandler packetHandler, byte[] encBuffer, byte[] tableState) {
-                        rc4Tryout.undoRc4(encBuffer);
+        for (int q = 0; q < 256; q++) {
-
+            for (int j = 0; j < 256; j++) {
-                    if (rc4Tryout.couldBeFresh()) {
+                if (bruteFlash(packetHandler, encBuffer, tableState, q, j)) {
-
+                    logger.debug("Brute forced flash with slow path");
-                        final byte[] encDataCopy = Arrays.copyOf(encBuffer, encBuffer.length);
+                    return true;
-                        final RC4 rc4TryCopy = rc4Tryout.deepCopy();
-
-                        try {
-                            final PayloadBuffer payloadBuffer = new FlashBuffer();
-                            final byte[] decoded = rc4TryCopy.cipher(encDataCopy);
-
-                            payloadBuffer.push(decoded);
-                            payloadBuffer.receive();
-
-                            if (payloadBuffer.isEmpty()) {
-                                flashPacketHandler.setRc4(rc4Tryout);
-                                return true;
-                            }
-                        } catch (Exception e) {
-                            e.printStackTrace();
-                        }
-                    }
                 }
             }
-        } catch (Exception e) {
-            e.printStackTrace();
         }
+
+        return false;
+    }
+
+    private boolean bruteFlash(EncryptedPacketHandler flashPacketHandler, byte[] encBuffer, byte[] tableState, int q, int j) {
+        final byte[] keycpy = Arrays.copyOf(tableState, tableState.length);
+        final RC4 rc4Tryout = new RC4(keycpy, q, j);
+
+        if (flashPacketHandler.getDirection() == HMessage.Direction.TOSERVER) {
+            rc4Tryout.undoRc4(encBuffer);
+        }
+
+        if (rc4Tryout.couldBeFresh()) {
+            final byte[] encDataCopy = Arrays.copyOf(encBuffer, encBuffer.length);
+            final RC4 rc4TryCopy = rc4Tryout.deepCopy();
+
+            try {
+                final PayloadBuffer payloadBuffer = new FlashBuffer();
+                final byte[] decoded = rc4TryCopy.cipher(encDataCopy);
+
+                payloadBuffer.push(decoded);
+                payloadBuffer.receive();
+
+                if (payloadBuffer.isEmpty()) {
+                    flashPacketHandler.setRc4(rc4Tryout);
+                    return true;
+                }
+            } catch (Exception e) {
+                // ignore
+            }
+        }
+
         return false;
     }
 }

G-Earth/src/main/java/gearth/protocol/memory/habboclient/HabboClient.java

@@ -1,22 +1,12 @@
 package gearth.protocol.memory.habboclient;
 
-import gearth.protocol.HConnection;
-
 import java.util.List;
 
 /**
  * Created by Jonas on 13/06/18.
  */
-public abstract class HabboClient {
+public interface HabboClient {
 
-    protected HConnection hConnection;
+    List<byte[]> getRC4Tables();
 
-    public HabboClient(HConnection connection) {
-        this.hConnection = connection;
-    }
-
-    // optional
-    public abstract List<byte[]> getRC4cached();
-
-    public abstract List<byte[]> getRC4possibilities();
 }

G-Earth/src/main/java/gearth/protocol/memory/habboclient/HabboClientFactory.java

@@ -2,11 +2,8 @@ package gearth.protocol.memory.habboclient;
 
 import gearth.misc.OSValidator;
 import gearth.protocol.HConnection;
-import gearth.protocol.connection.HClient;
 import gearth.protocol.memory.habboclient.linux.LinuxHabboClient;
-import gearth.protocol.memory.habboclient.macOs.MacOsHabboClient;
+import gearth.protocol.memory.habboclient.external.MemoryClient;
-import gearth.protocol.memory.habboclient.shockwave.ShockwaveMemoryClient;
-import gearth.protocol.memory.habboclient.windows.WindowsHabboClient;
 
 /**
  * Created by Jonas on 13/06/18.
@@ -14,17 +11,11 @@ import gearth.protocol.memory.habboclient.windows.WindowsHabboClient;
 public class HabboClientFactory {
 
     public static HabboClient get(HConnection connection) {
-        if (connection.getClientType() == HClient.SHOCKWAVE) {
+        if (OSValidator.isUnix()) {
-            return new ShockwaveMemoryClient(connection);
+            return new LinuxHabboClient(connection);
-        } else {
-            if (OSValidator.isWindows()) return new WindowsHabboClient(connection);
-            if (OSValidator.isUnix()) return new LinuxHabboClient(connection);
-            if (OSValidator.isMac()) return new MacOsHabboClient(connection);
         }
 
-        // todo use rust if beneficial
+        return new MemoryClient(connection);
-
-        return null;
     }
 
 }

G-Earth/src/main/java/gearth/protocol/memory/habboclient/external/MemoryClient.java

@@ -1,8 +1,9 @@
-package gearth.protocol.memory.habboclient.shockwave;
+package gearth.protocol.memory.habboclient.external;
 
 import gearth.encoding.HexEncoding;
 import gearth.misc.OSValidator;
 import gearth.protocol.HConnection;
+import gearth.protocol.connection.HClient;
 import gearth.protocol.memory.habboclient.HabboClient;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -17,21 +18,18 @@ import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 
-public class ShockwaveMemoryClient extends HabboClient {
+public class MemoryClient implements HabboClient {
 
-    private static final Logger logger = LoggerFactory.getLogger(ShockwaveMemoryClient.class);
+    private static final Logger logger = LoggerFactory.getLogger(MemoryClient.class);
 
-    public ShockwaveMemoryClient(HConnection connection) {
+    private final HConnection connection;
-        super(connection);
+
+    public MemoryClient(HConnection connection) {
+        this.connection = connection;
     }
 
     @Override
-    public List<byte[]> getRC4cached() {
+    public List<byte[]> getRC4Tables() {
-        return Collections.emptyList();
-    }
-
-    @Override
-    public List<byte[]> getRC4possibilities() {
         final List<byte[]> result = new ArrayList<>();
 
         try {
@@ -41,7 +39,7 @@ public class ShockwaveMemoryClient extends HabboClient {
                 result.add(HexEncoding.toBytes(potentialTable));
             }
         } catch (IOException | URISyntaxException e) {
-            logger.error("Failed to read RC4 possibilities from the Shockwave client", e);
+            logger.error("Failed to read RC4 possibilities from the client", e);
         }
 
         // Reverse the list so that the most likely keys are at the top.
@@ -59,7 +57,8 @@ public class ShockwaveMemoryClient extends HabboClient {
             filePath += "/G-MemZ";
         }
 
-        final ProcessBuilder pb = new ProcessBuilder(filePath);
+        final String hotelType = connection.getClientType() == HClient.SHOCKWAVE ? "shockwave" : "flash";
+        final ProcessBuilder pb = new ProcessBuilder(filePath, hotelType);
         final Process p = pb.start();
 
         final HashSet<String> possibleData = new HashSet<>();

G-Earth/src/main/java/gearth/protocol/memory/habboclient/linux/LinuxHabboClient.java

@@ -7,7 +7,7 @@ import java.io.*;
 import java.nio.file.Files;
 import java.util.*;
 
-public class LinuxHabboClient extends HabboClient {
+public class LinuxHabboClient implements HabboClient {
 
 
     private static final String[] potentialProcessNames = {"--ppapi-flash-args", "plugin-container", "Habbo"};
@@ -25,8 +25,6 @@ public class LinuxHabboClient extends HabboClient {
     private static final boolean DEBUG = false;
 
     public LinuxHabboClient(HConnection connection) {
-        super(connection);
-
         File folder = new File("/proc");
 
         boolean found = false;
@@ -56,12 +54,6 @@ public class LinuxHabboClient extends HabboClient {
         if (DEBUG) System.out.println("* Found flashclient " + potentialProcesses.size() + " potential processes");
     }
 
-    @Override
-    public List<byte[]> getRC4cached() {
-        return new ArrayList<>();
-    }
-
-
     private void refreshMemoryMaps() {
         String filename = "/proc/"+this.PID+"/maps";
         BufferedReader reader;
@@ -148,7 +140,7 @@ public class LinuxHabboClient extends HabboClient {
 
     }
 
-    public List<byte[]> getRC4possibilities() {
+    public List<byte[]> getRC4Tables() {
 
         int offset = 4;
         List<byte[]> resultSet = new ArrayList<>();

G-Earth/src/main/java/gearth/protocol/memory/habboclient/macOs/MacOsHabboClient.java

@@ -1,136 +0,0 @@
-package gearth.protocol.memory.habboclient.macOs;
-
-import gearth.encoding.HexEncoding;
-import gearth.misc.Cacher;
-import gearth.protocol.HConnection;
-import gearth.protocol.HMessage;
-import gearth.protocol.memory.habboclient.HabboClient;
-import org.bouncycastle.util.encoders.Hex;
-import org.json.JSONArray;
-import org.json.JSONObject;
-
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.net.URISyntaxException;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.StringJoiner;
-
-public class MacOsHabboClient extends HabboClient {
-
-    public MacOsHabboClient(HConnection connection) {
-        super(connection);
-
-        connection.addTrafficListener(0, message -> {
-            if (message.getDestination() == HMessage.Direction.TOSERVER && message.getPacket().headerId() == PRODUCTION_ID) {
-                production = message.getPacket().readString();
-            }
-        });
-    }
-
-
-    private static final String OFFSETS_CACHE_KEY = "RC4Offsets";
-    private static final int PRODUCTION_ID = 4000;
-    private String production = "";
-
-    @Override
-    public List<byte[]> getRC4cached() {
-        List<byte[]> result = new ArrayList<>();
-        try {
-            List<String> possibleResults = readPossibleBytes(true);
-
-            if (possibleResults == null)
-                return new ArrayList<>();
-
-            for (String s : possibleResults)
-                result.add(HexEncoding.toBytes(s));
-        } catch (IOException | URISyntaxException e) {
-            e.printStackTrace();
-        }
-        return result;
-    }
-
-    private ArrayList<String> readPossibleBytes(boolean useCache) throws IOException, URISyntaxException {
-        ProcessBuilder pb;
-
-        JSONObject revisionList = (JSONObject) Cacher.get(OFFSETS_CACHE_KEY);
-        if (revisionList == null) {
-            Cacher.put(OFFSETS_CACHE_KEY, new JSONObject());
-            revisionList = (JSONObject) Cacher.get(OFFSETS_CACHE_KEY);
-        }
-
-        assert revisionList != null;
-        JSONArray cachedOffsets;
-        if (revisionList.has(production))
-            cachedOffsets = (JSONArray) revisionList.get(production);
-        else
-            cachedOffsets = null;
-
-        StringJoiner joiner = new StringJoiner(" ");
-
-        if (useCache) {
-            if (cachedOffsets == null) {
-                return null;
-            }
-
-            for (Object s : cachedOffsets) {
-                joiner.add((String)s);
-            }
-        }
-
-        String g_mem = new File(this.getClass().getProtectionDomain().getCodeSource().getLocation().toURI()).getParent() + "/G-Mem";
-        if (!useCache)
-            pb = new ProcessBuilder(g_mem, hConnection.getClientHost() , Integer.toString(hConnection.getClientPort()));
-        else
-            pb = new ProcessBuilder(g_mem, hConnection.getClientHost() , Integer.toString(hConnection.getClientPort()), "-c" + joiner.toString());
-
-
-        Process p = pb.start();
-        BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
-
-        String line;
-        ArrayList<String> possibleData = new ArrayList<>();
-
-        if (cachedOffsets == null) {
-            cachedOffsets = new JSONArray();
-        }
-
-
-        int count = 0;
-        while((line = reader.readLine()) !=  null) {
-            if (line.length() > 1) {
-                if (!useCache && (count++ % 2 == 0)) {
-                    if (!cachedOffsets.toList().contains(line)) {
-                        cachedOffsets.put(line);
-                        System.out.println("[+] " + line);
-                    }
-                }
-                else
-                    possibleData.add(line);
-            }
-        }
-
-        revisionList.put(production, cachedOffsets);
-        Cacher.put(OFFSETS_CACHE_KEY, revisionList);
-        p.destroy();
-        return possibleData;
-    }
-
-    @Override
-    public List<byte[]> getRC4possibilities() {
-        List<byte[]> result = new ArrayList<>();
-        try {
-            ArrayList<String> possibleData = readPossibleBytes(false);
-
-            for (String possibleHexStr : possibleData) {
-                result.add(HexEncoding.toBytes(possibleHexStr));
-            }
-        } catch (IOException | URISyntaxException e) {
-            e.printStackTrace();
-        }
-        return result;
-    }
-}

G-Earth/src/main/java/gearth/protocol/memory/habboclient/rust/RustHabboClient.java

@@ -1,56 +0,0 @@
-package gearth.protocol.memory.habboclient.rust;
-
-import gearth.encoding.HexEncoding;
-import gearth.protocol.HConnection;
-import gearth.protocol.memory.habboclient.HabboClient;
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.net.URISyntaxException;
-import java.util.ArrayList;
-import java.util.List;
-
-public class RustHabboClient extends HabboClient {
-    public RustHabboClient(HConnection connection) {
-        super(connection);
-    }
-
-    @Override
-    public List<byte[]> getRC4cached() {
-        return new ArrayList<>();
-    }
-
-    public List<byte[]> getRC4possibilities() {
-        ArrayList<String> possibleData = new ArrayList<>();
-
-        try {
-            String g_mem = new File(this.getClass().getProtectionDomain().getCodeSource().getLocation().toURI()).getParent() + "/G-Mem";
-            ProcessBuilder pb = new ProcessBuilder(g_mem, hConnection.getClientHost() , Integer.toString(hConnection.getClientPort()));
-
-
-            Process p = pb.start();
-            BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
-
-            String line;
-
-            while((line = reader.readLine()) !=  null) {
-                if (line.length() > 1) {
-                    System.out.println("[+] " + line);
-                    possibleData.add(line);
-                }
-            }
-
-        } catch (URISyntaxException | IOException e) {
-            e.printStackTrace();
-        }
-
-        List<byte[]> ret = new ArrayList<>();
-
-        for (String possibleHexStr : possibleData)
-            ret.add(HexEncoding.toBytes(possibleHexStr));
-
-        return ret;
-    }
-}

G-Earth/src/main/java/gearth/protocol/memory/habboclient/windows/WindowsHabboClient.java

@@ -1,137 +0,0 @@
-package gearth.protocol.memory.habboclient.windows;
-
-import gearth.encoding.HexEncoding;
-import gearth.misc.Cacher;
-import gearth.protocol.HConnection;
-import gearth.protocol.HMessage;
-import gearth.protocol.memory.habboclient.HabboClient;
-import org.json.JSONArray;
-import org.json.JSONObject;
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.net.URISyntaxException;
-import java.util.*;
-
-/**
- * Created by Jonas on 27/06/2018.
- */
-
-public class WindowsHabboClient extends HabboClient {
-    public WindowsHabboClient(HConnection connection) {
-        super(connection);
-
-        connection.addTrafficListener(0, message -> {
-            if (message.getDestination() == HMessage.Direction.TOSERVER && message.getPacket().headerId() == PRODUCTION_ID) {
-                production = message.getPacket().readString();
-            }
-        });
-    }
-
-    private static final String OFFSETS_CACHE_KEY = "RC4Offsets";
-    private static final int PRODUCTION_ID = 4000;
-    private String production = "";
-
-
-    @Override
-    public List<byte[]> getRC4cached() {
-        List<byte[]> result = new ArrayList<>();
-        try {
-            List<String> possibleResults = readPossibleBytes(true);
-
-            if (possibleResults == null)
-                return new ArrayList<>();
-
-            for (String s : possibleResults)
-                result.add(HexEncoding.toBytes(s));
-        } catch (IOException | URISyntaxException e) {
-            e.printStackTrace();
-        }
-        return result;
-    }
-
-    private ArrayList<String> readPossibleBytes(boolean useCache) throws IOException, URISyntaxException {
-        ProcessBuilder pb;
-
-        JSONObject revisionList = (JSONObject) Cacher.get(OFFSETS_CACHE_KEY);
-        if (revisionList == null) {
-            Cacher.put(OFFSETS_CACHE_KEY, new JSONObject());
-            revisionList = (JSONObject) Cacher.get(OFFSETS_CACHE_KEY);
-        }
-
-        assert revisionList != null;
-        JSONArray cachedOffsets;
-        if (revisionList.has(production))
-            cachedOffsets = (JSONArray) revisionList.get(production);
-        else
-            cachedOffsets = null;
-
-        StringJoiner joiner = new StringJoiner(" ");
-
-        if (useCache) {
-            if (cachedOffsets == null) {
-                return null;
-            }
-
-            for (Object s : cachedOffsets) {
-                joiner.add((String)s);
-            }
-        }
-
-        String g_winmem = new File(this.getClass().getProtectionDomain().getCodeSource().getLocation().toURI()).getParent() + "\\G-Mem.exe";
-        String clientHost = hConnection.isRawIpMode() ? "null" : hConnection.getClientHost();
-        String clientPort = hConnection.isRawIpMode() ? "null" : hConnection.getClientPort() + "";
-
-        if (!useCache)
-            pb = new ProcessBuilder(g_winmem, clientHost , clientPort);
-        else
-            pb = new ProcessBuilder(g_winmem, clientHost , clientPort, "-c" + joiner.toString());
-
-
-        Process p = pb.start();
-        BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
-
-        String line;
-        ArrayList<String> possibleData = new ArrayList<>();
-
-        if (cachedOffsets == null) {
-            cachedOffsets = new JSONArray();
-        }
-
-
-        int count = 0;
-        while((line = reader.readLine()) !=  null) {
-            if (line.length() > 1) {
-                if (!useCache && (count++ % 2 == 0)) {
-                    if (!cachedOffsets.toList().contains(line)) {
-                        cachedOffsets.put(line);
-                    }
-                }
-                else
-                    possibleData.add(line);
-            }
-        }
-
-        revisionList.put(production, cachedOffsets);
-        Cacher.put(OFFSETS_CACHE_KEY, revisionList);
-        p.destroy();
-        return possibleData;
-    }
-
-    @Override
-    public List<byte[]> getRC4possibilities() {
-        List<byte[]> result = new ArrayList<>();
-        try {
-            ArrayList<String> possibleData = readPossibleBytes(false);
-
-            for (String possibleHexStr : possibleData) {
-                result.add(HexEncoding.toBytes(possibleHexStr));
-            }
-        } catch (IOException | URISyntaxException e) {
-            e.printStackTrace();
-        }
-        return result;
-    }
-}

G-Earth/src/test/java/TestRc4Shockwave.java

@@ -4,7 +4,7 @@ import gearth.protocol.crypto.RC4Base64;
 import gearth.protocol.crypto.RC4Cipher;
 import gearth.protocol.memory.Rc4Obtainer;
 import gearth.protocol.memory.habboclient.HabboClientFactory;
-import gearth.protocol.memory.habboclient.shockwave.ShockwaveMemoryClient;
+import gearth.protocol.memory.habboclient.external.MemoryClient;
 import gearth.protocol.packethandler.EncryptedPacketHandler;
 import gearth.protocol.packethandler.shockwave.ShockwavePacketOutgoingHandler;
 import org.bouncycastle.util.encoders.Hex;
@@ -39,14 +39,9 @@ public class TestRc4Shockwave {
     private final Semaphore waitSemaphore = new Semaphore(0);
     private final AtomicReference<RC4Cipher> cipher = new AtomicReference<>();
 
-    private final ShockwaveMemoryClient mockShockwaveMemoryClient = new ShockwaveMemoryClient(null) {
+    private final MemoryClient mockShockwaveMemoryClient = new MemoryClient(null) {
         @Override
-        public List<byte[]> getRC4cached() {
+        public List<byte[]> getRC4Tables() {
-            return new ArrayList<>();
-        }
-
-        @Override
-        public List<byte[]> getRC4possibilities() {
             return Arrays.asList(potentialTables);
         }
     };