unidbg-补环境访问文件及目录

悠悠 2023-09-26 17:01 39阅读 0赞

1.可以采用重定向  
2.采用虚拟目录

![在这里插入图片描述][2f5ce3d812f8435ea93240ebf8ee05dc.jpeg]  
前两个文件不用补

package com.file;
    
    import com.github.unidbg.AndroidEmulator;
    import com.github.unidbg.Emulator;
    import com.github.unidbg.file.FileResult;
    import com.github.unidbg.file.IOResolver;
    import com.github.unidbg.linux.android.AndroidEmulatorBuilder;
    import com.github.unidbg.linux.android.AndroidResolver;
    import com.github.unidbg.linux.android.dvm.DalvikModule;
    import com.github.unidbg.linux.android.dvm.DvmClass;
    import com.github.unidbg.linux.android.dvm.VM;
    import com.github.unidbg.linux.file.SimpleFileIO;
    import com.github.unidbg.memory.Memory;
    import java.io.File;
    import java.io.IOException;
    
    public class FileDemo{
        
        private final AndroidEmulator emulator;
        private final DvmClass MainActivity;
        private final VM vm;
    
        public FileDemo() {
        
            emulator = AndroidEmulatorBuilder
                    .for32Bit()
                    //虚拟目录
                    .setRootDir(new File("unidbg-android/src/test/resources/FileDemo/VFS"))
                    .build();
            Memory memory = emulator.getMemory();
            memory.setLibraryResolver(new AndroidResolver(23));
            vm = emulator.createDalvikVM(new File("unidbg-android/src/test/resources/FileDemo/app-debug.apk"));
            // 打开日志
            vm.setVerbose(true);
            // 在SO加载前添加文件重定位器
            emulator.getSyscallHandler().addIOResolver(new MyIOResolver());
            DalvikModule dm = vm.loadLibrary("fileinunidbg", true);
            MainActivity = vm.resolveClass("com/example/fileinunidbg/MainActivity");
            dm.callJNI_OnLoad(emulator);
        }
    
        public void destroy() throws IOException {
        
            emulator.close();
        }
    
        public void call(String pathName) {
        
            String methodSign = "stringFromJNI(Ljava/lang/String;)Ljava/lang/String;";
            MainActivity.callStaticJniMethodObject(emulator, methodSign, pathName);
        }
    
        public static void main(String[] args) throws IOException {
        
            FileDemo fileDemo = new FileDemo();
    
            String arg = "/data/user/0/com.example.fileinunidbg/files";
            fileDemo.call(arg);
            // 运行结束后关闭
            fileDemo.destroy();
        }
    
    
    }

package com.file;
    
    import com.github.unidbg.Emulator;
    import com.github.unidbg.file.FileResult;
    import com.github.unidbg.file.IOResolver;
    import com.github.unidbg.linux.file.ByteArrayFileIO;
    import com.github.unidbg.linux.file.DirectoryFileIO;
    import com.github.unidbg.linux.file.SimpleFileIO;
    
    import java.io.File;
    import java.nio.charset.StandardCharsets;
    
    public class MyIOResolver implements IOResolver {
        
        @Override
        public FileResult resolve(Emulator emulator, String pathname, int oflags) {
        
            System.out.println("lilac open file:"+pathname);
            if(pathname.equals("/data/user/0/com.example.fileinunidbg/files/key.txt")){
        
                return FileResult.success(new SimpleFileIO(oflags, new File("unidbg-android/src/test/resources/FileDemo/key.txt"), pathname));
    //            return FileResult.success(new ByteArrayFileIO(oflags, pathname, String.valueOf(System.currentTimeMillis()).getBytes(StandardCharsets.UTF_8)));
    //            return null;
    //            return FileResult.failed(13);
            }
    //        // 返回对应的文件夹（目录文件）
    //        if(pathname.equals("/data/user/0/com.example.fileinunidbg/files/demo2")){
        
    //            return FileResult.success(new DirectoryFileIO(oflags, pathname,new File("unidbg-android/src/test/resources/FileDemo/demo2")))
    //            return FileResult.success(new DirectoryFileIO(oflags, pathname, new DirectoryFileIO.DirectoryEntry(true, String.valueOf(System.currentTimeMillis())), new DirectoryFileIO.DirectoryEntry(true, "1234")));
    //        }
    //        if(pathname.equals("/data/user/0/com.example.fileinunidbg/files/demo2/1.txt")){
        
    //            return FileResult.success(new SimpleFileIO(oflags, new File("unidbg-android/src/test/resources/FileDemo/demo2/1.txt"), pathname));
    //        }
    //        if(pathname.equals("/data/user/0/com.example.fileinunidbg/files/demo2/2.txt")){
        
    //            return FileResult.success(new SimpleFileIO(oflags, new File("unidbg-android/src/test/resources/FileDemo/demo2/2.txt"), pathname));
    //        }
    //        if(pathname.equals("/data/user/0/com.example.fileinunidbg/files/demo2/3.txt")){
        
    //            return FileResult.success(new SimpleFileIO(oflags, new File("unidbg-android/src/test/resources/FileDemo/demo2/3.txt"), pathname));
    //        }
    
            return null;
        }
    }

[2f5ce3d812f8435ea93240ebf8ee05dc.jpeg]: https://img-blog.csdnimg.cn/2f5ce3d812f8435ea93240ebf8ee05dc.jpeg