feat: add custom asm for funny time fuckery

Author: terminalsin

.github/workflows/gradle.yml

@@ -22,6 +22,9 @@ jobs:
         #cache: maven
     - name: Build with Gradle
       run: |
+        cd org.ow2.asm
+        ./gradlew publishToMavenLocal --no-daemon
+        cd ../
         ./gradlew shadowJar --no-daemon
         mkdir staging/ && cp dev.skidfuscator.client.standalone/build/libs/client-standalone-all.jar staging
     - name: Upload a Build Artifact

.gitmodules

@@ -1,2 +1,5 @@
 [submodule "dev.xdark.ssvm"]
 	url = [email protected]:terminalsin/SSVM.git
+[submodule "org.ow2.asm"]
+	path = org.ow2.asm
+	url = https://gitlab.ow2.org/asm/asm.git

build.gradle

@@ -35,9 +35,6 @@ allprojects {
     }
 
     ext {
-        asm = 'org.ow2.asm:asm:9.7.1'
-        asm_commons = 'org.ow2.asm:asm-commons:9.7.1'
-        asm_tree = 'org.ow2.asm:asm-tree:9.7.1'
         cafedude = 'com.github.Col-E:CAFED00D:2.1.1'
         slf4j_api = 'org.slf4j:slf4j-api:1.7.36'
         jlinker = 'com.github.xxDark:jlinker:1.0.7'

dev.skidfuscator.obfuscator/build.gradle

@@ -17,6 +17,7 @@ dependencies {
     testCompileOnly 'org.projectlombok:lombok:1.18.36'
     compileOnly 'org.projectlombok:lombok:1.18.36'
 
+    implementation 'dev.skidfuscator.asm:asm-tree:9.8-SNAPSHOT'
     api project(':commons')
     api project(':pure-analysis')
 

dev.skidfuscator.obfuscator/src/main/java/dev/skidfuscator/obfuscator/skidasm/fake/FakeConditionalJumpStmt.java

@@ -4,6 +4,12 @@
 import org.mapleir.ir.cfg.BasicBlock;
 import org.mapleir.ir.code.Expr;
 import org.mapleir.ir.code.stmt.ConditionalJumpStmt;
+import org.mapleir.ir.codegen.BytecodeFrontend;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.tree.MethodNode;
+import org.objectweb.asm.util.CheckMethodAdapter;
+import org.objectweb.asm.util.TraceMethodVisitor;
 
 public class FakeConditionalJumpStmt extends ConditionalJumpStmt {
     public FakeConditionalJumpStmt(Expr left, Expr right, BasicBlock trueSuccessor, ComparisonType type) {
@@ -13,4 +19,17 @@ public FakeConditionalJumpStmt(Expr left, Expr right, BasicBlock trueSuccessor,
     public FakeConditionalJumpStmt(Expr left, Expr right, BasicBlock trueSuccessor, ComparisonType type, ConditionalJumpEdge<BasicBlock> edge) {
         super(left, right, trueSuccessor, type, edge);
     }
+
+    @Override
+    public void toCode(MethodVisitor visitor, BytecodeFrontend assembler) {
+        super.toCode(new MethodVisitor(Opcodes.ASM9, visitor) {
+            @Override
+            public void visitMethodInsn(int opcode, String owner, String name, String descriptor, boolean isInterface) {
+                super.visitMethodInsn(opcode, owner, name, descriptor, isInterface);
+                if (visitor instanceof MethodNode methodNode) {
+                    methodNode.instructions.getLast().setSkip(true);
+                }
+            }
+        }, assembler);
+    }
 }

dev.skidfuscator.obfuscator/src/main/java/dev/skidfuscator/obfuscator/skidasm/fake/FakeUnconditionalJumpStmt.java

@@ -3,9 +3,26 @@
 import org.mapleir.flowgraph.edges.UnconditionalJumpEdge;
 import org.mapleir.ir.cfg.BasicBlock;
 import org.mapleir.ir.code.stmt.UnconditionalJumpStmt;
+import org.mapleir.ir.codegen.BytecodeFrontend;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.tree.MethodNode;
 
 public class FakeUnconditionalJumpStmt extends UnconditionalJumpStmt {
     public FakeUnconditionalJumpStmt(BasicBlock target, UnconditionalJumpEdge<BasicBlock> edge) {
         super(target, edge);
     }
+
+    @Override
+    public void toCode(MethodVisitor visitor, BytecodeFrontend assembler) {
+        super.toCode(new MethodVisitor(Opcodes.ASM9, visitor) {
+            @Override
+            public void visitMethodInsn(int opcode, String owner, String name, String descriptor, boolean isInterface) {
+                super.visitMethodInsn(opcode, owner, name, descriptor, isInterface);
+                if (visitor instanceof MethodNode methodNode) {
+                    methodNode.instructions.getLast().setSkip(true);
+                }
+            }
+        }, assembler);
+    }
 }

dev.skidfuscator.obfuscator/src/main/java/dev/skidfuscator/obfuscator/transform/impl/flow/exception/BasicExceptionTransformer.java

@@ -157,7 +157,9 @@ void handle(final RunMethodTransformEvent event) {
 
             // Todo change blocks to be skiddedblocks to add method to directly add these
             final ConstantExpr var_const = new AlertableConstantExpr(hash.getHash(), Type.INT_TYPE);
-            final ConditionalJumpStmt jump_stmt = new FakeConditionalJumpStmt(hash.getExpr(), var_const, fuckup, ConditionalJumpStmt.ComparisonType.NE);
+            final ConditionalJumpStmt jump_stmt = new FakeConditionalJumpStmt(hash.getExpr(), var_const,
+                    RandomUtil.randomOfSet(cfg.vertices()),
+                    ConditionalJumpStmt.ComparisonType.NE);
 
             if (entry.get(entry.size() - 1) instanceof UnconditionalJumpStmt)
                 entry.add(entry.size() - 1, jump_stmt);

dev.skidfuscator.obfuscator/src/main/java/dev/skidfuscator/obfuscator/util/RandomUtil.java

@@ -5,6 +5,7 @@
 
 import java.io.IOException;
 import java.util.Random;
+import java.util.Set;
 
 @UtilityClass
 public class RandomUtil {
@@ -52,6 +53,16 @@ public String randomAlphabeticalString(int size) {
                 .toString();
     }
 
+    public <V> V randomOfSet(Set<V> set) {
+        int index = nextInt(set.size());
+        for (V v : set) {
+            if (index-- == 0) {
+                return v;
+            }
+        }
+        return null;
+    }
+
     private final Class<?>[] exceptionClasses = new Class<?>[] {
             IllegalAccessException.class,
             IOException.class,

dev.skidfuscator.obfuscator/src/test/resources/config/new.hocon

@@ -1,6 +1,6 @@
 exclude: [
   """
-  @class dev.sim0n.app.* {
+  @class !dev.sim0n.app.* {
             !@class util.*
             !@class Main
         }

org.mapleir.parent/org.mapleir.modasm/build.gradle

@@ -2,12 +2,16 @@ plugins {
     id 'java'
 }
 
+repositories {
+    mavenLocal()
+}
+
 dependencies {
     api project(':stdlib')
-    api 'org.ow2.asm:asm:9.7.1'
-    api 'org.ow2.asm:asm-tree:9.7.1'
-    api 'org.ow2.asm:asm-util:9.7.1'
-    api 'org.ow2.asm:asm-commons:9.7.1'
+    api 'dev.skidfuscator.asm:asm:9.8-SNAPSHOT'
+    api 'dev.skidfuscator.asm:asm-commons:9.8-SNAPSHOT'
+    api 'dev.skidfuscator.asm:asm-tree:9.8-SNAPSHOT'
+    api 'dev.skidfuscator.asm:asm-util:9.8-SNAPSHOT'
 }
 
 group = 'dev.skidfuscator.mapleir'