Android 逆向相关

当你拿到Android手机的卡刷包/线刷包,你有没有想过解开它?当你眼前摆着一个APK/jar/so,你有没有想过反编译/反汇编/动态调试然后分析研究它?……

刷机包

sparse img -> ext4 img

线刷包里面找到system.img/vendor.img

1
2
$ file system.img
system.img: Android sparse image, version: 1.0, Total of 849920 4096-byte output blocks in 2454 input chunks.

使用Android源码编译得到out/host/linux-x86/bin/simg2img即可将Android的sparse image转为ext4的image

dat -> ext4 img

system.new.dat.br转system.new.dat
brotli –decompress system.new.dat.br –output=system.new.dat

system.new.dat system.patch.dat system.transfer.list转ext4 img
https://github.com/xpirt/sdat2img

payload dump

https://gist.github.com/ius/42bd02a5df2226633a342ab7a9c60f15

odex/oat/vdex

Android <=4.4 odex to dex

https://github.com/JesusFreke/smali/wiki/DeodexInstructions
https://bitbucket.org/JesusFreke/smali/downloads/

Android <=7 oat to dex

https://github.com/testwhat/SmaliEx/releases
https://github.com/testwhat/SmaliEx
https://github.com/JesusFreke/smali/wiki/DeodexInstructions
https://bitbucket.org/JesusFreke/smali/downloads/

Android 8 vdex to dex

https://github.com/anestisb/vdexExtractor

Android 9 vdex->cdex->dex

https://github.com/anestisb/vdexExtractor
https://github.com/anestisb/vdexExtractor/issues/23
tools/deodex/run.sh -h

dex

dex转smali

apktool工具 针对 apk包括dex和资源

https://github.com/iBotPeaches/Apktool
https://ibotpeaches.github.io/Apktool/

baksmali、smali 针对dex

https://github.com/JesusFreke/smali
https://bitbucket.org/JesusFreke/smali/downloads/

dex转jar/java

googe enjarify工具dex转jar

https://github.com/google/enjarify

dex2jar

https://github.com/pxb1988/dex2jar
https://github.com/pxb1988/dex2jar/releases

结合jd-gui

https://github.com/java-decompiler/jd-gui
http://jd.benow.ca/

二合一工具
https://github.com/skylot/jadx