apkTool:

https://bitbucket.org/iBotPeaches/apktool/downloads/

dex2jar:

https://sourceforge.net/projects/dex2jar/

jd-gui:

Java Decompiler?

jd.benow.ca

對於加殼的dex採用ida dump oat，然後oat2dex

獲取地址：https://github.com/testwhat/SmaliEx/releases