BungeeCord Spoof Module

src/main/java/meteordevelopment/meteorclient/mixin/HandshakeC2SPacketMixin.java

@@ -0,0 +1,55 @@
+/*
+ * This file is part of the Meteor Client distribution (https://github.com/MeteorDevelopment/meteor-client).
+ * Copyright (c) Meteor Development.
+ */
+
+package meteordevelopment.meteorclient.mixin;
+
+import com.google.common.base.Charsets;
+import meteordevelopment.meteorclient.systems.modules.Modules;
+import meteordevelopment.meteorclient.systems.modules.misc.BungeeCordSpoof;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.network.packet.c2s.handshake.ConnectionIntent;
+import net.minecraft.network.packet.c2s.handshake.HandshakeC2SPacket;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Mutable;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import java.util.UUID;
+
+@Mixin(HandshakeC2SPacket.class)
+public class HandshakeC2SPacketMixin {
+    @Mutable
+    @Shadow
+    @Final
+    private String address;
+
+    @Inject(method = "<init>(ILjava/lang/String;ILnet/minecraft/network/packet/c2s/handshake/ConnectionIntent;)V", at = @At("TAIL"))
+    public void init(int protocolVersion, String address, int port, ConnectionIntent intendedState, CallbackInfo ci) {
+        if (Modules.get().isActive(BungeeCordSpoof.class) && intendedState == ConnectionIntent.LOGIN) {
+            BungeeCordSpoof bungeeCordSpoofModule = Modules.get().get(BungeeCordSpoof.class);
+
+            // Obtain UUID to send
+            String uuid;
+            if (!bungeeCordSpoofModule.spoofedUuid.get().isEmpty()) {
+                uuid = bungeeCordSpoofModule.spoofedUuid.get();
+            } else {
+                UUID currentUuid = MinecraftClient.getInstance().getSession().getUuidOrNull();
+                if (currentUuid == null) {
+                    // Cracked account
+                    currentUuid = UUID.nameUUIDFromBytes(("OfflinePlayer:" + MinecraftClient.getInstance().getSession().getUsername()).getBytes(Charsets.UTF_8));
+                }
+
+                // UUID must be without dashes
+                uuid = currentUuid.toString().replace("-", "");
+            }
+
+            // hostName \00 spoofed ip \00 spoofed uuid (\00 optional skin)
+            this.address = address + "\00" + bungeeCordSpoofModule.spoofedIp.get() + "\00" + uuid;
+        }
+    }
+}

src/main/java/meteordevelopment/meteorclient/systems/modules/Modules.java

@@ -586,6 +586,7 @@ private void initMisc() {
         add(new Spam());
         add(new ServerSpoof());
         add(new InventoryTweaks());
+        add(new BungeeCordSpoof());
     }
 
     public static class ModuleRegistry extends SimpleRegistry<Module> {

src/main/java/meteordevelopment/meteorclient/systems/modules/misc/BungeeCordSpoof.java

@@ -0,0 +1,43 @@
+/*
+ * This file is part of the Meteor Client distribution (https://github.com/MeteorDevelopment/meteor-client).
+ * Copyright (c) Meteor Development.
+ */
+
+package meteordevelopment.meteorclient.systems.modules.misc;
+
+import meteordevelopment.meteorclient.settings.Setting;
+import meteordevelopment.meteorclient.settings.SettingGroup;
+import meteordevelopment.meteorclient.settings.StringSetting;
+import meteordevelopment.meteorclient.systems.modules.Categories;
+import meteordevelopment.meteorclient.systems.modules.Module;
+
+public class BungeeCordSpoof extends Module {
+    private final SettingGroup sgGeneral = settings.getDefaultGroup();
+
+    public final Setting<String> spoofedIp = sgGeneral.add(new StringSetting.Builder()
+            .name("spoofed-ip")
+            .description("The IP to spoof. Recommended to change it to something not suspicious")
+            .defaultValue("127.0.0.1")
+            .build()
+    );
+
+    public final Setting<String> spoofedUuid = sgGeneral.add(new StringSetting.Builder()
+            .name("spoofed-uuid")
+            .description("The UUID to spoof. If empty then it uses UUID from your account or offline uuid if it is cracked account.")
+            .defaultValue("")
+            .filter((text, c) -> {
+                if (text.length() > 32) return false;
+                // UUID must be without dashes
+                if (c == '-') return false;
+                return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f');
+            })
+            .build()
+    );
+
+    public BungeeCordSpoof() {
+        super(Categories.Misc, "bungeeCord-spoof",
+            "This module allows you to connect to backend servers that use BungeeCord (with 'bungeecord: true' enabled in spigot.yml). " +
+                "Additionally, it allows you to spoof your IP and UUID.");
+        this.runInMainMenu = true;
+    }
+}

src/main/resources/meteor-client.mixins.json

@@ -183,7 +183,8 @@
     "WorldChunkMixin",
     "WorldRendererAccessor",
     "WorldRendererMixin",
-    "YggdrasilMinecraftSessionServiceAccessor"
+    "YggdrasilMinecraftSessionServiceAccessor",
+    "HandshakeC2SPacketMixin"
   ],
   "injectors": {
     "defaultRequire": 1