├── .classpath
├── .gitattributes
├── .gitignore
├── .project
├── LICENSE
├── README.md
├── image
    └── ClassName.jpg
├── libs
    ├── dexlib2-2.4.0.jar
    ├── guava-27.1-android.jar
    └── jsr305-1.3.9.jar
└── src
    └── dNN
        ├── Main.java
        └── transformers
            ├── ClassName.java
            └── Transformers.java


/.classpath:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <classpath>
 3 | 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 4 | 	<classpathentry kind="src" path="src"/>
 5 | 	<classpathentry kind="lib" path="libs/guava-27.1-android.jar"/>
 6 | 	<classpathentry kind="lib" path="libs/jsr305-1.3.9.jar"/>
 7 | 	<classpathentry kind="lib" path="libs/dexlib2-2.4.0.jar"/>
 8 | 	<classpathentry kind="output" path="bin"/>
 9 | </classpath>
10 | 


--------------------------------------------------------------------------------
/.gitattributes:
--------------------------------------------------------------------------------
1 | # Auto detect text files and perform LF normalization
2 | * text=auto
3 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | .settings/
2 | bin/
3 | test/
4 | DexNameNormalizer.jar
5 | 


--------------------------------------------------------------------------------
/.project:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <projectDescription>
 3 | 	<name>DexNameNormalizer</name>
 4 | 	<comment></comment>
 5 | 	<projects>
 6 | 	</projects>
 7 | 	<buildSpec>
 8 | 		<buildCommand>
 9 | 			<name>org.eclipse.jdt.core.javabuilder</name>
10 | 			<arguments>
11 | 			</arguments>
12 | 		</buildCommand>
13 | 	</buildSpec>
14 | 	<natures>
15 | 		<nature>org.eclipse.jdt.core.javanature</nature>
16 | 	</natures>
17 | </projectDescription>
18 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | [DexNameNormalizer](https://github.com/Modify24x7/DexNameNormalizer/)
 2 | ===================
 3 | Normalize obfuscate name
 4 | 
 5 | ### Usage
 6 |     java -jar DexNameNormalizer.jar -inDex classes.dex -outDex classes-Normal.dex -api 15 -outMappingPath classes-Mapping.txt
 7 | 	
 8 | ### Before and After
 9 | 
10 | The code on the left is a decompilation of an obfuscated app, and the code on the right has been deobfuscated.
11 | <section>
12 | <p align="center">
13 | <img src="https://raw.githubusercontent.com/Modify24x7/DexNameNormalizer/master/image/ClassName.jpg" alt="" height="380px" align="center" />
14 | </p>
15 | </section>
16 | 	
17 | ### Note:
18 |     App not runnable after normalize, analyze use only.
19 | 	
20 | ### Support
21 |     Class rename(read source name and replace)
22 | 	
23 | ### License
24 |     dexlib2: The 3-Clause BSD License
25 |     guava: http://www.apache.org/licenses/LICENSE-2.0.txt
26 |     jsr350: http://www.apache.org/licenses/LICENSE-2.0.txt
27 | 


--------------------------------------------------------------------------------
/image/ClassName.jpg:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/Modify24x7/DexNameNormalizer/08610a5f96c1bd3f27cbebc54cf3b74e807ad12e/image/ClassName.jpg


--------------------------------------------------------------------------------
/libs/dexlib2-2.4.0.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/Modify24x7/DexNameNormalizer/08610a5f96c1bd3f27cbebc54cf3b74e807ad12e/libs/dexlib2-2.4.0.jar


--------------------------------------------------------------------------------
/libs/guava-27.1-android.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/Modify24x7/DexNameNormalizer/08610a5f96c1bd3f27cbebc54cf3b74e807ad12e/libs/guava-27.1-android.jar


--------------------------------------------------------------------------------
/libs/jsr305-1.3.9.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/Modify24x7/DexNameNormalizer/08610a5f96c1bd3f27cbebc54cf3b74e807ad12e/libs/jsr305-1.3.9.jar


--------------------------------------------------------------------------------
/src/dNN/Main.java:
--------------------------------------------------------------------------------
  1 | package dNN;
  2 | 
  3 | import java.io.File;
  4 | import java.util.HashMap;
  5 | 
  6 | import dNN.transformers.Transformers;
  7 | 
  8 | /**
  9 |  * @author Gorav Gupta
 10 |  *
 11 |  */
 12 | public class Main {
 13 | 
 14 | 	private static final String ARG_IN = "-inDex";
 15 | 	private static final String ARG_OUT = "-outDex";
 16 | 	private static final String ARG_API = "-api";
 17 | 	private static final String ARG_MAP_PATH = "-outMappingPath";
 18 | 
 19 | 	/**
 20 | 	 * @param args
 21 | 	 */
 22 | 	public static void main(String[] args) {
 23 | 
 24 | 		// TODO Auto-generated method stub
 25 | 		// test();
 26 | 		
 27 | 		if (args.length < 8) {
 28 | 			printUsage();
 29 | 		} else {
 30 | 			try {
 31 | 				executeProcess(readArgs(args));
 32 | 			} catch (Exception e) {
 33 | 				// TODO Auto-generated catch block
 34 | 				e.printStackTrace();
 35 | 			}
 36 | 		}
 37 | 	}
 38 | 
 39 | 	private static void test() {
 40 | 		try {
 41 | 			Transformers.normalizeClassName("test/classes.dex", "test/classes-nor.dex", Integer.valueOf("15"),
 42 | 					"test/classes-Mapping.txt");
 43 | 		} catch (Exception ex) {
 44 | 			ex.printStackTrace();
 45 | 		}
 46 | 	}
 47 | 
 48 | 	/***
 49 | 	 * @param argsList
 50 | 	 * @throws Exception
 51 | 	 */
 52 | 	private static void executeProcess(HashMap<String, String> argsList) throws Exception {
 53 | 		Transformers.normalizeClassName(argsList.get(ARG_IN), argsList.get(ARG_OUT),
 54 | 				Integer.valueOf(argsList.get(ARG_API)), argsList.get(ARG_MAP_PATH));
 55 | 	}
 56 | 
 57 | 	private static void printUsage() {
 58 | 		String command = "DexNameNormalizer.jar";
 59 | 		System.out.println("DexNameNormalizer Version: 0.3");
 60 | 		System.out.println();
 61 | 		System.out.println("Usage: java -jar " + command + " " + ARG_IN + " classes.dex " + ARG_OUT
 62 | 				+ " classes-Normal.dex " + ARG_API + " 15 " + ARG_MAP_PATH + " classes-Mapping.txt");
 63 | 
 64 | 		System.out.println();
 65 | 		System.out.println("https://github.com/Modify24x7");
 66 | 	}
 67 | 
 68 | 	/***
 69 | 	 * @param args
 70 | 	 * @return
 71 | 	 */
 72 | 	private static HashMap<String, String> readArgs(String[] args) {
 73 | 		HashMap<String, String> argsList = new HashMap<>();
 74 | 
 75 | 		for (int i = 0; i < args.length; i++) {
 76 | 			if (args[i].equals(ARG_IN)) {
 77 | 
 78 | 				argsList.put(ARG_IN, args[++i]);
 79 | 
 80 | 			} else if (args[i].equals(ARG_OUT)) {
 81 | 
 82 | 				argsList.put(ARG_OUT, args[++i]);
 83 | 
 84 | 				File parent = new File(args[i]).getParentFile();
 85 | 				if (parent != null && (!parent.exists()))
 86 | 					parent.mkdirs();
 87 | 
 88 | 			} else if (args[i].equals(ARG_API)) {
 89 | 
 90 | 				argsList.put(ARG_API, args[++i]);
 91 | 
 92 | 			} else if (args[i].equals(ARG_MAP_PATH)) {
 93 | 
 94 | 				argsList.put(ARG_MAP_PATH, args[++i]);
 95 | 
 96 | 				File parent = new File(args[i]).getParentFile();
 97 | 				if (parent != null && (!parent.exists()))
 98 | 					parent.mkdirs();
 99 | 
100 | 			}
101 | 		}
102 | 		return argsList;
103 | 	}
104 | 
105 | }
106 | 


--------------------------------------------------------------------------------
/src/dNN/transformers/ClassName.java:
--------------------------------------------------------------------------------
  1 | package dNN.transformers;
  2 | 
  3 | import java.io.File;
  4 | import java.nio.file.Files;
  5 | import java.util.AbstractSet;
  6 | import java.util.ArrayList;
  7 | import java.util.Collections;
  8 | import java.util.Iterator;
  9 | import java.util.List;
 10 | import java.util.Set;
 11 | 
 12 | import javax.annotation.Nonnull;
 13 | 
 14 | import org.jf.dexlib2.DexFileFactory;
 15 | import org.jf.dexlib2.Opcodes;
 16 | import org.jf.dexlib2.iface.ClassDef;
 17 | import org.jf.dexlib2.iface.DexFile;
 18 | import org.jf.dexlib2.iface.reference.MethodReference;
 19 | import org.jf.dexlib2.immutable.ImmutableClassDef;
 20 | import org.jf.dexlib2.immutable.reference.ImmutableMethodReference;
 21 | import org.jf.dexlib2.rewriter.DexRewriter;
 22 | import org.jf.dexlib2.rewriter.Rewriter;
 23 | import org.jf.dexlib2.rewriter.RewriterModule;
 24 | import org.jf.dexlib2.rewriter.Rewriters;
 25 | 
 26 | /**
 27 |  * @author Gorav Gupta
 28 |  *
 29 |  */
 30 | public class ClassName {
 31 | 
 32 | 	static void deobfuscateClass(String inDex, String outDex, int API, String mapPath) throws Exception {
 33 | 
 34 | 		DexFile dexFile = DexFileFactory.loadDexFile(inDex, Opcodes.forApi(API));
 35 | 
 36 | 		List<String> classList = new ArrayList<>();
 37 | 		List<ClassDef> classes = new ArrayList<>();
 38 | 
 39 | 		List<String> normalClassList = new ArrayList<>();
 40 | 
 41 | 		for (ClassDef classDef : dexFile.getClasses()) {
 42 | 			classList.add(classDef.getType());
 43 | 		}
 44 | 
 45 | 		for (ClassDef classDef : dexFile.getClasses()) {
 46 | 
 47 | 			String Type = classDef.getType().replaceFirst(";", ""); // Lpkg/class or Lpkg/class$a
 48 | 
 49 | 			String Type2;
 50 | 
 51 | 			if (Type.lastIndexOf("/") != -1) {
 52 | 				Type2 = Type.substring(0, Type.lastIndexOf("/")); // Lpkg
 53 | 			} else {
 54 | 				Type2 = Type; // Lpkg
 55 | 			}
 56 | 
 57 | 			String Type3 = Type.substring(Type.lastIndexOf("/") + 1); // class or class$a
 58 | 
 59 | 			String Type4;
 60 | 
 61 | 			try {
 62 | 				Type4 = Type3.substring(Type3.indexOf("$")) + ";"; // $a;
 63 | 			} catch (Exception ex) {
 64 | 				Type4 = ";";
 65 | 			}
 66 | 
 67 | 			String sourceFile = classDef.getSourceFile();
 68 | 
 69 | 			if (sourceFile != null) {
 70 | 				if (sourceFile.endsWith(".java") || sourceFile.endsWith(".kt")) {
 71 | 
 72 | 					String TypeFinal;
 73 | 
 74 | 					try {
 75 | 						TypeFinal = Type2 + "/" + sourceFile.substring(0, sourceFile.lastIndexOf(".")) + Type4;
 76 | 					} catch (Exception ex) {
 77 | 						TypeFinal = classDef.getType();
 78 | 					}
 79 | 
 80 | 					boolean added = false;
 81 | 					for (String clazz : classList) {
 82 | 						if (TypeFinal.equals(clazz)) {
 83 | 							added = true;
 84 | 						}
 85 | 					}
 86 | 
 87 | 					boolean added2 = false;
 88 | 					for (ClassDef cD : classes) {
 89 | 						if (TypeFinal.equals(cD.getType())) {
 90 | 							added2 = true;
 91 | 						}
 92 | 					}
 93 | 
 94 | 					if (!added && !added2) {
 95 | 						normalClassList.add(TypeFinal);
 96 | 
 97 | 						classes.add(new ImmutableClassDef(TypeFinal, classDef.getAccessFlags(),
 98 | 								classDef.getSuperclass(), classDef.getInterfaces(), classDef.getSourceFile(),
 99 | 								classDef.getAnnotations(), classDef.getFields(), classDef.getMethods()));
100 | 					} else {
101 | 						normalClassList.add(classDef.getType());
102 | 						classes.add(classDef);
103 | 					}
104 | 				} else {
105 | 					normalClassList.add(classDef.getType());
106 | 					classes.add(classDef);
107 | 				}
108 | 			} else {
109 | 				normalClassList.add(classDef.getType());
110 | 				classes.add(classDef);
111 | 			}
112 | 		}
113 | 
114 | 		DexRewriter dexRewriter = new DexRewriter(new RewriterModule() {
115 | 			@Override
116 | 			public Rewriter<MethodReference> getMethodReferenceRewriter(Rewriters rewriters) {
117 | 				return new Rewriter<MethodReference>() {
118 | 
119 | 					@Override
120 | 					public MethodReference rewrite(MethodReference value) {
121 | 						// TODO Auto-generated method stub
122 | 						return new ImmutableMethodReference(
123 | 								replaceRefClass(value.getDefiningClass(), classList, normalClassList), value.getName(),
124 | 								value.getParameterTypes(), value.getReturnType());
125 | 					}
126 | 
127 | 				};
128 | 			}
129 | 		});
130 | 		
131 | 		DexFile dex = dexRewriter.getDexFileRewriter().rewrite(getDexFile(classes, API));
132 | 		
133 | 		DexFileFactory.writeDexFile(outDex, dex);
134 | 
135 | 		// Write mapping
136 | 		writeMapping(mapPath, classList, normalClassList);
137 | 
138 | 		System.out.println("https://github.com/Modify24x7");
139 | 	}
140 | 
141 | 	private static void writeMapping(String mapPath, List<String> oldRefList, List<String> newRefList)
142 | 			throws Exception {
143 | 
144 | 		List<String> mapping = new ArrayList<>();
145 | 
146 | 		for (int i = 0; i < oldRefList.size(); i++) {
147 | 			mapping.add(oldRefList.get(i) + " -> " + newRefList.get(i));
148 | 		}
149 | 
150 | 		Collections.sort(mapping);
151 | 
152 | 		StringBuilder builder = new StringBuilder();
153 | 		for (String str : mapping) {
154 | 			builder.append(str + "\n");
155 | 		}
156 | 
157 | 		File file = new File(mapPath);
158 | 
159 | 		Files.write(file.toPath(), builder.toString().getBytes("UTF-8"));
160 | 	}
161 | 
162 | 	private static String replaceRefClass(String refClass, List<String> oldRefList, List<String> newRefList) {
163 | 		for (int i = 0; i < oldRefList.size(); i++) {
164 | 			if (refClass.equals(oldRefList.get(i))) {
165 | 				return newRefList.get(i);
166 | 			}
167 | 		}
168 | 
169 | 		return refClass;
170 | 	}
171 | 
172 | 	private static DexFile getDexFile(List<ClassDef> classes, int API) {
173 | 
174 | 		Collections.sort(classes);
175 | 
176 | 		return new DexFile() {
177 | 
178 | 			@Nonnull
179 | 			@Override
180 | 			public Set<? extends ClassDef> getClasses() {
181 | 				// TODO Auto-generated method stub
182 | 				return new AbstractSet<ClassDef>() {
183 | 
184 | 					@Override
185 | 					public Iterator<ClassDef> iterator() {
186 | 						// TODO Auto-generated method stub
187 | 						return classes.iterator();
188 | 					}
189 | 
190 | 					@Override
191 | 					public int size() {
192 | 						// TODO Auto-generated method stub
193 | 						return classes.size();
194 | 					}
195 | 
196 | 				};
197 | 			}
198 | 
199 | 			@Override
200 | 			public Opcodes getOpcodes() {
201 | 				// TODO Auto-generated method stub
202 | 				return Opcodes.forApi(API);
203 | 			}
204 | 		};
205 | 	}
206 | 
207 | }
208 | 


--------------------------------------------------------------------------------
/src/dNN/transformers/Transformers.java:
--------------------------------------------------------------------------------
 1 | package dNN.transformers;
 2 | 
 3 | /**
 4 |  * @author Gorav Gupta
 5 |  *
 6 |  */
 7 | public class Transformers {
 8 | 
 9 | 	public static void normalizeClassName(String inDex, String outDex, int api, String outMappingPath)
10 | 			throws Exception {
11 | 		ClassName.deobfuscateClass(inDex, outDex, api, outMappingPath);
12 | 	}
13 | 
14 | }
15 | 


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