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zaxar163 2018-12-08 10:55:51 +03:00
parent 19cbc8ba8e
commit 78912e4acf
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3 changed files with 145 additions and 2 deletions
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142
LaunchServer/src/main/java/ru/gravit/launchserver/asm/AntiDecomp.java Normal file
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@ -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();
}
}

3
LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java
View file

@ -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);
}

2
modules

@ -1 +1 @@
Subproject commit 79e24c862b2324b7751f1520f9732eed31416c6d
Subproject commit b956ffe0479d6b7b8c28c6f16864e516f45b307d