Katalina

Katalina is like Unicorn but for Dalvik bytecode. It provides an environment that can execute Android bytecode one instruction at a time.

How to install:

pip install -r requirements.txt

How to run:

python3 main.py -xe classes.dex

How it looks like:

What works:

• most instructions
• same-class method invocations
• Static fields/method invocations
• String APIs
• Base64 APIs

What kinda works:

• Iterator APIs
• Arrays APIs
• cross-class non static method invocations and fields

What's broken:

• MultiDex
• I/O
• Windows support might be broken because of the timeout mechanism, please use WSL to run it