From 78912e4acffc327b80833a2b7f94a24d58ec48ed Mon Sep 17 00:00:00 2001 From: zaxar163 Date: Sat, 8 Dec 2018 10:55:51 +0300 Subject: [PATCH] AntiFernflower... --- .../gravit/launchserver/asm/AntiDecomp.java | 142 ++++++++++++++++++ .../binary/JARLauncherBinary.java | 3 +- modules | 2 +- 3 files changed, 145 insertions(+), 2 deletions(-) create mode 100644 LaunchServer/src/main/java/ru/gravit/launchserver/asm/AntiDecomp.java diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/asm/AntiDecomp.java b/LaunchServer/src/main/java/ru/gravit/launchserver/asm/AntiDecomp.java new file mode 100644 index 00000000..7df0dcdf --- /dev/null +++ b/LaunchServer/src/main/java/ru/gravit/launchserver/asm/AntiDecomp.java @@ -0,0 +1,142 @@ +package ru.gravit.launchserver.asm; + +import java.io.IOException; +import java.security.SecureRandom; +import java.util.Random; + +import org.objectweb.asm.ClassReader; +import org.objectweb.asm.ClassVisitor; +import org.objectweb.asm.ClassWriter; +import org.objectweb.asm.Label; +import org.objectweb.asm.MethodVisitor; +import org.objectweb.asm.Opcodes; +import org.objectweb.asm.Type; +import org.objectweb.asm.commons.AdviceAdapter; + +public class AntiDecomp { + private static final Class[] exceptionsL = { + Throwable.class, Exception.class, Error.class, InternalError.class, RuntimeException.class, NullPointerException.class, + AssertionError.class, NoClassDefFoundError.class, IOException.class, NoSuchFieldException.class + }; + private static class ObfClassVisitor extends ClassVisitor { + private ObfClassVisitor(ClassVisitor classVisitor) { + super(Opcodes.ASM7, classVisitor); + } + + @Override + public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) { + return new AdviceAdapter(Opcodes.ASM7, super.visitMethod(access, name, desc, signature, exceptions), access, + name, desc) { + private Random r = new SecureRandom(); + + @Override + public void onMethodEnter() { + antiDecomp(); + } + + public void antiDecomp() { + Label lbl1 = super.newLabel(), lbl15 = super.newLabel(), lbl2 = super.newLabel(), + lbl25 = super.newLabel(); + + // try-catch блок с lbl1 до lbl2 с переходом на lbl2 при java/lang/Exception + this.visitException(lbl1, lbl2, lbl2); + + // lbl1: iconst_0 + super.visitLabel(lbl1); + super.visitInsn(ICONST_0); + // lbl15: pop; goto lbl25 + super.visitLabel(lbl15); + super.visitInsn(POP); + this.jumpLabel(lbl25); + // lbl2: pop; + super.visitLabel(lbl2); + super.visitInsn(POP); + // lbl25: + super.visitLabel(lbl25); + } + + public void visitException(Label st, Label en, Label h) { + super.visitTryCatchBlock(st, en, h, Type.getInternalName(exceptionsL[r.nextInt(exceptionsL.length-1)])); + } + + public void jumpLabel(Label to) { + super.visitJumpInsn(GOTO, to); + } + }; + } + } + + private static class AObfClassVisitor extends ClassVisitor { + private AObfClassVisitor(ClassVisitor classVisitor) { + super(Opcodes.ASM7, classVisitor); + } + + @Override + public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) { + return new AdviceAdapter(Opcodes.ASM7, super.visitMethod(access, name, desc, signature, exceptions), access, + name, desc) { + private Random r = new SecureRandom(); + + @Override + public void onMethodEnter() { + antiDecomp(); + } + + public void antiDecomp() { + Label lbl1 = this.newLabel(), lbl15 = this.newLabel(), + lbl2 = this.newLabel(), lbl3 = this.newLabel(), + lbl35 = this.newLabel(), lbl4 = this.newLabel(); + + // try-catch блок с lbl1 до lbl2 с переходом на lbl15 при java/lang/Exception + this.visitException(lbl1, lbl2, lbl15); + // try-catch блок с lbl3 до lbl4 с переходом на lbl3 при java/lang/Exception + this.visitException(lbl3, lbl4, lbl3); + + // lbl1: goto lbl2 + this.visitLabel(lbl1); + this.jumpLabel(lbl2); + // lbl15: pop + this.visitLabel(lbl15); + this.visitInsn(POP); + // lbl2: goto lbl35 + this.visitLabel(lbl2); + this.jumpLabel(lbl35); + // lbl3: pop + this.visitLabel(lbl3); + this.visitInsn(POP); + // lbl35: nop + this.visitLabel(lbl35); + this.visitInsn(NOP); + // lbl4: nop + this.visitLabel(lbl4); + this.visitInsn(NOP); + } + + public void visitException(Label st, Label en, Label h) { + super.visitTryCatchBlock(st, en, h, Type.getInternalName(exceptionsL[r.nextInt(exceptionsL.length-1)])); + } + + public void jumpLabel(Label to) { + super.visitJumpInsn(GOTO, to); + } + }; + } + } + + private AntiDecomp() { + } + + public static byte[] antiDecomp(final byte[] input, ClassMetadataReader reader) { + ClassReader cr = new ClassReader(input); + ClassWriter cw = new SafeClassWriter(reader, ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS); + cr.accept(new AObfClassVisitor(cw), ClassReader.SKIP_DEBUG | ClassReader.EXPAND_FRAMES); + return cw.toByteArray(); + } + + public static byte[] expAntiDecomp(byte[] input, ClassMetadataReader reader) { + ClassReader cr = new ClassReader(input); + ClassWriter cw = new SafeClassWriter(reader, ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS); + cr.accept(new ObfClassVisitor(cw), ClassReader.SKIP_DEBUG | ClassReader.EXPAND_FRAMES); + return cw.toByteArray(); + } +} diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java index 8aef49b1..3d88b45d 100644 --- a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java +++ b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java @@ -31,6 +31,7 @@ import ru.gravit.launcher.LauncherConfig; import ru.gravit.launcher.serialize.HOutput; import ru.gravit.launchserver.LaunchServer; +import ru.gravit.launchserver.asm.AntiDecomp; import ru.gravit.launchserver.asm.ClassMetadataReader; import ru.gravit.launchserver.manangers.BuildHookManager.ZipBuildHook; import ru.gravit.utils.helper.CommonHelper; @@ -170,7 +171,7 @@ public void build() throws IOException { IOHelper.transfer(input, outputStream); bytes = outputStream.toByteArray(); } - bytes = server.buildHookManager.proGuardClassTransform(bytes, classname, this); + bytes = AntiDecomp.antiDecomp(server.buildHookManager.proGuardClassTransform(bytes, classname, this), reader); try (ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes)) { IOHelper.transfer(inputStream, output); } diff --git a/modules b/modules index 79e24c86..b956ffe0 160000 --- a/modules +++ b/modules @@ -1 +1 @@ -Subproject commit 79e24c862b2324b7751f1520f9732eed31416c6d +Subproject commit b956ffe0479d6b7b8c28c6f16864e516f45b307d