课程帖
jadx 把apk反编译为java代码
https://github.com/skylot/jadx
java source → gradle class → dx → dex → apk → apk → dex → dex → java（混淆后）
apktool 实现apk的反编译和重新构建
https://bitbucket.org/iBotPeaches/apktool/downloads/apktool_2.3.3.jar
dex ↔ smali
smali语法与示例
dex → java —> dex 很难
const-string v0, "testerhome"
const-string v1, "hello from seveniruby"
invoke-static {v0, v1}, Landroid/util/Log;->e(Ljava/lang/String;Ljava/lang/String;)I
Keep中加入testerhome输出示例
#反编译
244 java -jar ../apktool_2.3.1.jar d keep.apk -o keep_decode
#修改Keep，在里面增加smali指令，参考上面的章节
245 vim keep_decode//smali/com/gotokeep/keep/KApplication.smali
#重新构建出来新的apk
246 java -jar ../apktool_2.3.1.jar build keep_decode/ -o keep-new.apk
#生成自己的证书
keytool -genkey -v -keystore testerhome.keystore -alias testerhome -keyalg RSA -keysize 2048 -validity 10000
#利用之前的keytool生成的keystore文件签名新的apk
249 jarsigner -verbose -keystore ../xueqiu/testerhome.keystore -signedjar keep-signed.apk keep-new.apk testerhome
261 adb devices
262 adb -s VED7N18403003958 install -r keep-signed.apk
264 adb -s VED7N18403003958 logcat | grep testerhome
作业
演练在keep中加入smali指令
把成功的结果发上来