diff --git a/Launcher/src/main/java/ru/gravit/launcher/LauncherAgent.java b/Launcher/src/main/java/ru/gravit/launcher/LauncherAgent.java
index 877f018f..14117c8e 100644
--- a/Launcher/src/main/java/ru/gravit/launcher/LauncherAgent.java
+++ b/Launcher/src/main/java/ru/gravit/launcher/LauncherAgent.java
@@ -43,9 +43,117 @@ public static void premain(String agentArgument, Instrumentation instrumentation
         		if (trimmedArg.contains("r")) rt = false;
         	}
         }
+        if (rt || pb) replaceClasses(pb, rt);
     }
 
     public static boolean isStarted() {
         return isAgentStarted;
     }
+    
+    /**
+     * @author https://github.com/Konloch/JVM-Sandbox
+	 * Replaces the Runtime class via instrumentation, transforms the class via ASM
+	 */
+    private static void replaceClasses(boolean pb, boolean rt) {
+		for(Class<?> c : inst.getAllLoadedClasses()) {
+			if(rt && c.getName().equals("java.lang.Runtime")) {
+				try {
+					inst.redefineClasses(new java.lang.instrument.ClassDefinition(java.lang.Runtime.class, transformClass(c.getName(), getClassFile(c))));
+				} catch(Exception e) {
+					e.printStackTrace();
+				}
+			}
+			if(pb && c.getName().equals("java.lang.ProcessBuilder")) {
+				try {
+					inst.redefineClasses(new java.lang.instrument.ClassDefinition(java.lang.ProcessBuilder.class, transformClass(c.getName(), getClassFile(c))));
+				} catch(Exception e) {
+					e.printStackTrace();
+				}
+			}
+			if(c.getName().equals("java.awt.Robot")) {
+				try {
+					inst.redefineClasses(new java.lang.instrument.ClassDefinition(java.lang.ProcessBuilder.class, transformClass(c.getName(), getClassFile(c))));
+				} catch(Exception e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+	
+	/**
+     * @author https://github.com/Konloch/JVM-Sandbox
+	 * Use ASM to modify the byte array
+	 */
+	private static byte[] transformClass(String className, byte[] classBytes) {
+		if (className.equals("java.lang.Runtime")) {
+			ClassReader cr=new ClassReader(classBytes);
+			ClassNode cn=new ClassNode();
+			cr.accept(cn,ClassReader.EXPAND_FRAMES);
+			
+			for (Object o : cn.methods.toArray()) {
+				MethodNode m = (MethodNode) o;
+				if(m.name.equals("exec")) {
+					m.instructions.insert(new InsnNode(ARETURN));
+					m.instructions.insert(new InsnNode(ACONST_NULL));
+				}
+			}
+			ClassWriter cw=new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
+			cn.accept(cw);
+			return cw.toByteArray();
+		} else if (className.equals("java.lang.ProcessBuilder")) {
+			ClassReader cr=new ClassReader(classBytes);
+			ClassNode cn=new ClassNode();
+			cr.accept(cn,ClassReader.EXPAND_FRAMES);
+			
+			for (Object o : cn.methods.toArray()) {
+				MethodNode m = (MethodNode) o;
+				if(m.name.equals("start")) {
+					m.instructions.insert(new InsnNode(ARETURN));
+					m.instructions.insert(new InsnNode(ACONST_NULL));
+				}
+			}
+			ClassWriter cw=new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
+			cn.accept(cw);
+			return cw.toByteArray();
+		} else if (className.equals("java.awt.Robot")) {
+			ClassReader cr=new ClassReader(classBytes);
+			ClassNode cn=new ClassNode();
+			cr.accept(cn,ClassReader.EXPAND_FRAMES);
+			
+			for (Object o : cn.methods.toArray()) {
+				MethodNode m = (MethodNode) o;
+				if(	m.name.equals("createScreenCapture") 	|| m.name.equals("getPixelColor") ||
+					m.name.equals("keyPress") 				|| m.name.equals("keyRelease") ||
+					m.name.equals("mouseMove")				|| m.name.equals("mousePress") ||
+					m.name.equals("mouseWheel"))
+				{
+					m.instructions.insert(new InsnNode(ARETURN));
+					m.instructions.insert(new InsnNode(ACONST_NULL));
+				}
+			}
+			ClassWriter cw=new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
+			cn.accept(cw);
+			return cw.toByteArray();
+		}
+		return classBytes;
+	}
+	
+	/**
+     * @author https://github.com/Konloch/JVM-Sandbox
+     * Do not remove this method. Do not to cause classloading!
+	 * Grab the byte array from the loaded Class object
+	 * @param clazz
+	 * @return array, respending this class in bytecode.
+	 * @throws IOException
+	 */
+	private static byte[] getClassFile(Class<?> clazz) throws IOException {     
+	    InputStream is = clazz.getResourceAsStream( "/" + clazz.getName().replace('.', '/') + ".class");
+	    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+	    int r = 0;
+	    byte[] buffer = new byte[8192];
+	    while((r=is.read(buffer))>=0) {
+	        baos.write(buffer, 0, r);
+	    }   
+	    return baos.toByteArray();
+	}
 }