前言

frida的官方文档写的并不是很好，有些例子好像还有些问题。这就不得不去研究它的源码了。frida的源码有许多个模块，我们这只关注 frida-java-bridge这个模块。为什么呢？这个模块实现了js世界到java世界的单向通道。所以我们主要的代码在这。可以看看这篇文章对frida-java的介绍frida源码阅读之frida-java。
这里我就记录一下frida-java的编译环境搭建

环境

VMware 12
Ubuntu16
Android8.0

步骤

1.下载安装配置Ubuntu16需要使用到的软件
1.安装配置JDK
2.安装配置SDK
3.安装配置NDK
4.编译安装Nodejs
5.编译运行frida-java

这里就跳过安装Ubuntu16虚拟机的步骤了

下载安装配置Ubuntu16需要使用到的软件

配置apt国内软件源镜像
使用清华大学开源软件镜像站

image.png
将软件源的配置拷贝到

sudo gedit /etc/apt/sources.list

更新apt

sudo apt-get update

安装curl

sudo apt-get install curl

安装git

sudo apt-get install git

---

安装配置JDK

下载jdk
http://jdk.android-studio.org/
这里为了方便我在家目录创建一个work目录，有关环境我都安装到这个目录下。读者可以自行选择目录、

mkdir work

将下载的jdk解压

tar -zxvf  jdk-8u77-linux-x64.tar.gz

配置环境变量

sudo gedit /etc/profile

加入配置如下，请修改自己的jdk位置

#set java env
export JAVA_HOME=/home/fj/work/jdk1.8.0_231
export JRE_HOME=${JAVA_HOME}/jre 
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib 
export PATH=${JAVA_HOME}/bin:$PATH

加载配置

source /etc/profile

查看是否配置成功

fj@ubuntu:~/work/jdk1.8.0_231$ java -version
java version "1.8.0_231"
Java(TM) SE Runtime Environment (build 1.8.0_231-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.231-b11, mixed mode)

---

安装配置SDK

这里我借助android studio进行下载sdk。
android studio下载地址：http://www.android-studio.org/

下载后移动到work目录，解压运行

tar -zxvf android-studio-ide-191.5977832-linux.tar.gz 
cd android-studio/bin
./studio.sh 

其他操作和Windows上的as一样

安装sdk版本,我们下载29版本。

image.png

这里可以看到as下载的sdk在/home/fj/Android/Sdk，所以我们需要配置这个目录的环境变量

sudo gedit /etc/profile

配置如下,请注意修改自己sdk的位置:
注意配置build-tools/30.0.3 因为编译时会用到dx

#set sdk
export ANDROID_SDK_HOME=/home/fj/Android/Sdk
export PATH=$PATH:${ANDROID_SDK_HOME}/tools
export PATH=$PATH:${ANDROID_SDK_HOME}/build-tools/30.0.3
export PATH=$PATH:${ANDROID_SDK_HOME}/platform-tools

加载配置文件

source /etc/profile

运行dx命令,如果出现以下信息说明成功

fj@ubuntu:~/work/android-ndk-r21d$ dx
error: no command specified
usage:
  dx --dex [--debug] [--verbose] [--positions=<style>] [--no-locals]
  [--no-optimize] [--statistics] [--[no-]optimize-list=<file>] [--no-strict]
  [--keep-classes] [--output=<file>] [--dump-to=<file>] [--dump-width=<n>]
  [--dump-method=<name>[*]] [--verbose-dump] [--no-files] [--core-library]
  [--num-threads=<n>] [--incremental] [--force-jumbo] [--no-warning]
  [--multi-dex [--main-dex-list=<file> [--minimal-main-dex]]
  [--input-list=<file>] [--min-sdk-version=<n>]
  [--allow-all-interface-method-invokes]

---

安装配置NDK

ndk下载地址：https://developer.android.google.cn/ndk/downloads/
下载android-ndk-r21d-linux-x86_64.zip这个版本，因为frida的ndk默认版本就是这个

下载后移动到work目录，解压

unzip android-ndk-r21d-linux-x86_64.zip
cd android-ndk-r21d

添加/etc/profile配置

#set NDK env
export NDK_HOME=/home/fj/work/android-ndk-r21d
export PATH=$NDK_HOME:$PATH

加载配置文件

source /etc/profile

查看ndk版本,如果出现以下信息说明成功

fj@ubuntu:~/work/android-ndk-r21d$ ndk-build --v
GNU Make 4.2.1
Built for x86_64-pc-linux-gnu
Copyright (C) 1988-2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

---

编译安装Nodejs

这里我使用源码安装，使用apt安装的话版本过老。不支持frida的编译，并且升级麻烦。

$ sudo git clone https://github.com/nodejs/node.git
Cloning into 'node'...

修改目录权限：

$ sudo chmod -R 755 node

使用 ./configure 创建编译文件，并按照：

$ cd node
$ sudo ./configure
$ sudo make
$ sudo make install

查看 node 和npm版本：

fj@ubuntu:~/work/node$ npm -v
7.4.2
fj@ubuntu:~/work/node$ node -v
v16.0.0-pre

---

编译运行frida-java

使用Git下载frida-java-bridge源码，这里我选择3.9.4，因为我的frida用的就是这个版本

fj@ubuntu:~/work$ git clone https://github.com/frida/frida-java-bridge.git --tag 3.9.4

frida-java对应的版本在test/Makefile下可以看到

frida_version := 12.11.14

修改配置文件

cd frida-java-bridge/

sudo gedit test/config.mk

修改为如下内容

#修改为自己的sdk目录
ANDROID_SDK_ROOT ?= $(shell echo /home/fj/Android/Sdk)
#修改为自己的ndk目录
ANDROID_NDK_ROOT ?= /home/fj/work/android-ndk-r21d
ANDROID_ARCH ?= arm64
ANDROID_ABI ?= arm64-v8a
#因为我们前面在As中下载了29版本，所以可以不用更换
ANDROID_API_LEVEL ?= 29
ANDROID_BINDIR ?= /system/bin
ANDROID_LIBDIR ?= /system/lib64
APEX_LIBDIRS ?= /apex/com.android.runtime/$(shell basename $(ANDROID_LIBDIR)):/apex/com.android.art/$(shell basename $(ANDROID_LIBDIR))
DEBUG_PORT ?= 5042

一般情况修改上面我注释的部分就行了，如果你的机型的架构不一样注意修改一下。

进行编译

fj@ubuntu:~/work/frida-java-bridge$ make check
npm install

added 234 packages, and audited 235 packages in 25s

found 0 vulnerabilities
make -C test deploy
make[1]: Entering directory '/home/fj/work/frida-java-bridge/test'
curl -Ls https://github.com/frida/frida/releases/download/12.11.14/frida-gumjs-devkit-12.11.14-android-arm64.tar.xz | tar -xJf - -C build/obj/local/arm64-v8a
/home/fj/work/android-ndk-r21d/ndk-build \
    NDK_PROJECT_PATH=$(pwd) \
    NDK_APPLICATION_MK=$(pwd)/Application.mk \
    NDK_OUT=$(pwd)/build/obj \
    NDK_LIBS_OUT=$(pwd)/build \
    FRIDA_JAVA_TESTS_DATA_DIR=/data/local/tmp/frida-java-bridge-tests \
    FRIDA_JAVA_TESTS_CACHE_DIR=/data/local/tmp/frida-java-bridge-tests/dalvik-cache
make[2]: Entering directory '/home/fj/work/frida-java-bridge/test'
[arm64-v8a] Compile        : artpalette <= artpalette.c
[arm64-v8a] SharedLibrary  : libartpalette.so
[arm64-v8a] Install        : libartpalette.so => build/arm64-v8a/libartpalette.so
[arm64-v8a] Compile        : runner <= runner.c
[arm64-v8a] Compile++      : runner <= dummy.cpp
[arm64-v8a] Executable     : runner
[arm64-v8a] Install        : runner => build/arm64-v8a/runner
make[2]: Leaving directory '/home/fj/work/frida-java-bridge/test'
curl -Ls https://github.com/junit-team/junit4/releases/download/r4.12/junit-4.12.jar > build/junit.jar
curl -Ls https://search.maven.org/remotecontent?filepath=org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar > build/hamcrest.jar
cd build/java/ \
    && jar xf ../junit.jar \
    && jar xf ../hamcrest.jar
javac \
    -cp .:build/java/:/home/fj/Android/Sdk/platforms/android-29/android.jar \
    -bootclasspath /home/fj/Android/Sdk/platforms/android-29/android.jar \
    -source 1.8 \
    -target 1.8 \
    -Xlint:deprecation \
    -Xlint:unchecked \
    re/frida/Script.java re/frida/Eatable.java re/frida/Formatter.java re/frida/MethodTest.java re/frida/EatableWithField.java re/frida/ClassCreationTest.java re/frida/Fruit.java re/frida/PrimitiveArray.java re/frida/TestRunner.java re/frida/ClassRegistryTest.java \
    -d build/java/
jar cfe build/tests.jar re.frida.tests.Runner -C build/java .
dx --dex --output=build/tests.dex build/tests.jar
npm install

> frida-java-bridge-bundle@1.0.0 prepare
> npm run build


> frida-java-bridge-bundle@1.0.0 build
> frida-compile bundle -o build/frida-java-bridge.js -x -c


added 427 packages, and audited 428 packages in 2m

found 0 vulnerabilities
npm run build

> frida-java-bridge-bundle@1.0.0 build
> frida-compile bundle -o build/frida-java-bridge.js -x -c

adb shell "rm -rf /data/local/tmp/frida-java-bridge-tests && mkdir -p /data/local/tmp/frida-java-bridge-tests"
* daemon not running; starting now at tcp:5037
* daemon started successfully
adb: no devices/emulators found
Makefile:26: recipe for target 'deploy' failed
make[1]: *** [deploy] Error 1
make[1]: Leaving directory '/home/fj/work/frida-java-bridge/test'
Makefile:5: recipe for target 'check' failed
make: *** [check] Error 2

如果你看到
daemon started successfully
adb: no devices/emulators found
这些信息说明编译成功了，后面的错误是因为我还有没有连接我的手机。

测试运行
现在连接上我的手机，这里我使用无线adb的方式连接

fj@ubuntu:~/work/frida-java-bridge$ adb connect 192.168.124.2
connected to 192.168.124.2:5555
fj@ubuntu:~/work/frida-java-bridge$ adb devices
List of devices attached
192.168.124.2:5555  device

再次编译运行

fj@ubuntu:~/work/frida-java-bridge$ make check
make -C test deploy
make[1]: Entering directory '/home/fj/work/frida-java-bridge/test'
adb shell "rm -rf /data/local/tmp/frida-java-bridge-tests && mkdir -p /data/local/tmp/frida-java-bridge-tests"
adb push build/arm64-v8a/runner build/tests.dex build/frida-java-bridge.js build/arm64-v8a/libartpalette.so /data/local/tmp/frida-java-bridge-tests
build/arm64-v8a/runner: 1 file pushed, 0 skipped. 2.0 MB/s (16624056 bytes in 7.970s)
build/tests.dex: 1 file pushed, 0 skipped. 635.5 MB/s (314016 bytes in 0.000s)
build/frida-java-bridge.js: 1 file pushed, 0 skipped. 0.4 MB/s (293597 bytes in 0.764s)
build/arm64-v8a/libartpalette.so: 1 file pushed, 0 skipped. 0.1 MB/s (5760 bytes in 0.040s)
4 files pushed, 0 skipped. 1.6 MB/s (17237429 bytes in 10.091s)
make[1]: Leaving directory '/home/fj/work/frida-java-bridge/test'
make -C test run
make[1]: Entering directory '/home/fj/work/frida-java-bridge/test'
adb shell "LD_LIBRARY_PATH='/apex/com.android.runtime/lib64:/apex/com.android.art/lib64:/data/local/tmp/frida-java-bridge-tests' /data/local/tmp/frida-java-bridge-tests/runner"
JUnit version 4.12
..........................................................
Time: 18.474

OK (58 tests)

make[1]: Leaving directory '/home/fj/work/frida-java-bridge/test'

看到最后面的OK就知道成功了，其中有58个方法被测试。