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Pimp my APK
An .APK file (e.g. Android Package) is a compressed collection of files (i.e. a package) for Android. It could be extracted as an regular archive.
A .DEX file (.e.g Dalvik EXecutable) is an executable file saved in a format that contains compiled code that Android systems can run.
When auditing an APK, transforming it to human-readable formats is usually required.
echo "deb http://http.kali.org/kali kali-rolling main contrib non-free" >> /etc/apt/sources.list
Note that if you haven’t updated your Kali installation in some time, you will like receive a GPG error about the repository key being expired (
ED444FF07D8D0BF6). Fortunately, this issue is quickly resolved by running the following as root:
wget -q -O - https://archive.kali.org/archive-key.asc | apt-key add
apt install unzip smali apktool dex2jar jadx
# Uncompress an APK
unzip application.apk -d ./application-unzipped/
# Disassemble DEX
baksmali d ./application-unzipped/classes.dex -o ./application-unzipped/classes.dex.out/ 2>/dev/null
# Convert .DEX files to JAVA Jar file (.class files)
d2j-dex2jar application.apk -o application.jar
# Decompile .DEX files
jadx application.apk -j $(grep -c ^processor /proc/cpuinfo) -d ./application-jadx/ > /dev/null
# Unpack the APK
apktool d application.apk -o ./application-unpacked/