├── .github └── workflows │ └── gradle.yml ├── .gitignore ├── LICENSE ├── README.md ├── build.gradle ├── example └── Example.java ├── example2 └── Example2.java ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── java2smali ├── lib └── dx-23.0.2.jar ├── release.sh ├── settings.gradle └── src └── main └── java └── edu └── washington └── cs └── java2smali ├── App.kt ├── Class2Dex.kt └── Dex2Smali.kt /.github/workflows/gradle.yml: -------------------------------------------------------------------------------- 1 | # This workflow will build a Java project with Gradle 2 | # For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle 3 | 4 | name: Java CI with Gradle 5 | 6 | on: 7 | push: 8 | branches: [ master ] 9 | pull_request: 10 | branches: [ master ] 11 | 12 | jobs: 13 | build: 14 | 15 | runs-on: ubuntu-latest 16 | 17 | steps: 18 | - uses: actions/checkout@v2 19 | - name: Set up JDK 1.8 20 | uses: actions/setup-java@v1 21 | with: 22 | java-version: 1.8 23 | - name: Grant execute permission for gradlew 24 | run: chmod +x gradlew 25 | - name: Build with Gradle 26 | run: ./gradlew build 27 | - name: Run tests 28 | run: | 29 | ./java2smali example/Example.java 30 | APP_CLASSPATH=. ./java2smali example2/Example2.java -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | bin 2 | .gradle 3 | /build/ 4 | 5 | gradle-app.setting 6 | 7 | !gradle-wrapper.jar 8 | 9 | .idea 10 | 11 | *.class 12 | *.smali 13 | dist 14 | .DS_Store 15 | dist.zip 16 | 17 | .settings 18 | .classpath 19 | .project 20 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Copyright 2020, Zhen Zhang 2 | 3 | Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: 4 | 5 | The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. 6 | 7 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 8 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | java2smali 2 | === 3 | 4 | Compile: 5 | 6 | ./gradlew build 7 | 8 | or, download: https://github.com/izgzhen/java2smali/releases 9 | 10 | Run (in Unix system): 11 | 12 | ./java2smali example/Example.java 13 | 14 | Then you should be able to find `*.smali` files in the `example/` directory. 15 | 16 | Another example run with imports: 17 | 18 | APP_CLASSPATH=. ./java2smali example2/Example2.java 19 | 20 | Note that `Example2.java` import `example.Example`, so you must specify its class path directory. 21 | 22 | ### Related 23 | 24 | https://github.com/ollide/intellij-java2smali is a IntelliJ plugin. 25 | 26 | https://r8.googlesource.com/r8/+/1.0.21/tools/java2smali.sh is a bash script 27 | that doesn't work off-the-shelf. 28 | 29 | The following steps might work as well, as long as the `*.java` file 30 | does not have a package namespace. 31 | 32 | ``` 33 | javac HelloWorld.java 34 | dx --dex --output=classes.dex HelloWorld.class 35 | baksmali classes.dex 36 | ``` 37 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | plugins { 2 | id 'java' 3 | id 'org.jetbrains.kotlin.jvm' version '1.2.71' 4 | } 5 | 6 | group 'edu.washington.cs' 7 | version '1.1' 8 | 9 | sourceCompatibility = 1.8 10 | 11 | repositories { 12 | mavenCentral() 13 | } 14 | 15 | dependencies { 16 | compile files('lib/dx-23.0.2.jar') 17 | compile 'org.smali:baksmali:2.2.2' 18 | testCompile group: 'junit', name: 'junit', version: '4.12' 19 | compile "org.jetbrains.kotlin:kotlin-stdlib" 20 | compile "org.jetbrains.kotlin:kotlin-runtime" 21 | compile "commons-io:commons-io:2.6" 22 | } 23 | 24 | jar { 25 | manifest { 26 | attributes( 27 | 'Main-Class': 'edu.washington.cs.java2smali.App' 28 | ) 29 | } 30 | from { 31 | configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } 32 | } 33 | } 34 | 35 | compileKotlin { 36 | kotlinOptions { 37 | jvmTarget = "1.8" 38 | } 39 | } 40 | compileTestKotlin { 41 | kotlinOptions { 42 | jvmTarget = "1.8" 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /example/Example.java: -------------------------------------------------------------------------------- 1 | package example; 2 | 3 | import java.util.HashMap; 4 | 5 | public class Example { 6 | public static class BaseClass { 7 | public void Foo() { 8 | 9 | } 10 | } 11 | 12 | public static class DerivedClass extends BaseClass { 13 | } 14 | 15 | public static void example() { 16 | DerivedClass o = new DerivedClass(); 17 | o.Foo(); 18 | } 19 | } 20 | -------------------------------------------------------------------------------- /example2/Example2.java: -------------------------------------------------------------------------------- 1 | import example.Example; 2 | 3 | public class Example2 { 4 | public static void example2() { 5 | } 6 | } 7 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/izgzhen/java2smali/e669dcf8d87806f1efc304be974d7ac36d1ab504/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionBase=GRADLE_USER_HOME 2 | distributionPath=wrapper/dists 3 | distributionUrl=https\://services.gradle.org/distributions/gradle-4.8-bin.zip 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn () { 37 | echo "$*" 38 | } 39 | 40 | die () { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save () { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /java2smali: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )" 4 | java -jar $DIR/build/libs/java2smali-1.1.jar $@ 5 | -------------------------------------------------------------------------------- /lib/dx-23.0.2.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/izgzhen/java2smali/e669dcf8d87806f1efc304be974d7ac36d1ab504/lib/dx-23.0.2.jar -------------------------------------------------------------------------------- /release.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | ./gradlew build 4 | rm -rf dist dist.zip 5 | mkdir -p dist/build/libs 6 | cp build/libs/java2smali-1.1.jar dist/build/libs 7 | cp java2smali dist 8 | mkdir -p dist/example 9 | mkdir -p dist/example2 10 | cp example/*.java dist/example 11 | cp example2/*.java dist/example2 12 | zip -r dist.zip dist 13 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | rootProject.name = 'java2smali' 2 | 3 | -------------------------------------------------------------------------------- /src/main/java/edu/washington/cs/java2smali/App.kt: -------------------------------------------------------------------------------- 1 | package edu.washington.cs.java2smali 2 | 3 | import org.apache.commons.io.FileUtils 4 | import java.io.File 5 | import java.lang.Exception 6 | import java.lang.RuntimeException 7 | import java.nio.file.Files 8 | import java.util.stream.Collectors.toList 9 | import javax.tools.ToolProvider 10 | import kotlin.system.exitProcess 11 | 12 | object App { 13 | @JvmStatic 14 | fun main(args: Array) { 15 | val javaPath = args[0] 16 | val compiler = ToolProvider.getSystemJavaCompiler() 17 | var classpath = System.getProperty("java.class.path") 18 | val appClassPath = System.getenv("APP_CLASSPATH") 19 | if (appClassPath != null) { 20 | classpath = classpath + ":" + appClassPath 21 | } 22 | val optionList = listOf("-classpath", classpath) 23 | try { 24 | val fileManager = compiler.getStandardFileManager(null, null, null) 25 | val fileObjects = fileManager.getJavaFileObjectsFromStrings(listOf(javaPath)) 26 | val task = compiler.getTask(null, null, null, optionList, null, fileObjects) 27 | val result = task.call() 28 | if (result == null || !result) { 29 | throw RuntimeException("Compilation failed") 30 | } 31 | } catch (e : Exception) { 32 | e.printStackTrace() 33 | exitProcess(-1) 34 | } 35 | val javaFile = File(javaPath) 36 | val javaDir = javaFile.parentFile 37 | val javaNameExt = javaFile.name 38 | val javaName = javaNameExt.substring(0, javaNameExt.lastIndexOf('.')) 39 | val classFiles = javaDir.list { _, s -> s.startsWith(javaName) && s.endsWith(".class") } 40 | for (classFile : String in classFiles) { 41 | val classFilePath = javaDir.toString() + "/" + classFile 42 | val tempFile = File.createTempFile("java2smali-", ".dex") 43 | Class2Dex.dexClassFile(arrayOf(classFilePath), tempFile.absolutePath) 44 | val tempDir = Files.createTempDirectory("java2smali-") 45 | Dex2Smali.disassembleDexFile(tempFile.absolutePath, tempDir.toString()) 46 | val list = Files.walk(tempDir).filter { f -> Files.isRegularFile(f) }.collect(toList()) 47 | FileUtils.deleteQuietly(File(classFilePath)) 48 | FileUtils.copyFile(File(list[0].toString()), File(classFilePath.replace(".class", ".smali"))) 49 | FileUtils.deleteDirectory(tempDir.toFile()) 50 | tempFile.deleteOnExit() 51 | } 52 | } 53 | } -------------------------------------------------------------------------------- /src/main/java/edu/washington/cs/java2smali/Class2Dex.kt: -------------------------------------------------------------------------------- 1 | package edu.washington.cs.java2smali 2 | 3 | import com.android.dx.command.dexer.Main 4 | 5 | import java.io.IOException 6 | 7 | object Class2Dex { 8 | @Throws(IOException::class) 9 | fun dexClassFile(inputClassFilePaths: Array, outputDexPath: String) { 10 | val arguments = Main.Arguments() 11 | arguments.outName = outputDexPath 12 | arguments.strictNameCheck = false 13 | arguments.fileNames = inputClassFilePaths 14 | 15 | Main.run(arguments) 16 | } 17 | } -------------------------------------------------------------------------------- /src/main/java/edu/washington/cs/java2smali/Dex2Smali.kt: -------------------------------------------------------------------------------- 1 | package edu.washington.cs.java2smali 2 | 3 | import org.jf.baksmali.Baksmali 4 | import org.jf.baksmali.BaksmaliOptions 5 | import org.jf.dexlib2.DexFileFactory 6 | import org.jf.dexlib2.Opcodes 7 | import java.io.File 8 | import java.io.IOException 9 | 10 | object Dex2Smali { 11 | @Throws(IOException::class) 12 | fun disassembleDexFile(dexFilePath: String, outputDir: String) { 13 | val opCodes = Opcodes.getDefault() 14 | val dexBackedDexFile = DexFileFactory.loadDexFile(dexFilePath, opCodes) 15 | 16 | val options = BaksmaliOptions() 17 | options.apiLevel = opCodes.api 18 | Baksmali.disassembleDexFile(dexBackedDexFile, File(outputDir), 6, options) 19 | } 20 | } --------------------------------------------------------------------------------