ExAndroidNativeEmu

This is a personal improved version of AndroidNativeEmu.Allow running android elf code on pc.

Improvment compare with AndroidNativeEmu

• Rewrite memory mapping module, fully support jemalloc
• More debug utils, pretty printing for instruction and memory.
• Some misc bug fix
• Stop all runing when getting exception instead of just skiping one emulator runing for easily bug detecting...
• Auto Load dependency so.
• Auto generate /proc/[pid]/maps according to current memory map
• Fix R_ARM_ABS32 relocation bug.
• Use program header to load so instead of section header
• Support Java reflection
• Support Arm64
• Support multi-threaded like pthread_create etc.
• Add Function hook feature

TODO

• ~~Simulate linker TLS initialization.~~
• ~~Support well known virtual file like /proc/self/maps...~~
• ~~Get rid of dependency on Section Header when loading ELF~~.

Usage

In the future this will be possible through pypi.

Make sure you are using python 3.7 above.

1. Clone the repository
2. Run pip install -r requirements.txt
3. Run python example_jni.py

Dependencies

• Unicorn CPU emulator framework

Text sources

• https://greek0.net/elf.html
• https://stackoverflow.com/questions/13908276/loading-elf-file-in-c-in-user-space
• https://programtalk.com/python-examples/pyelftools.elftools.elf.relocation.Relocation/
• http://infocenter.arm.com/help/topic/com.arm.doc.ihi0044f/IHI0044F_aaelf.pdf
• https://wiki.osdev.org/ELF_Tutorial
• https://docs.oracle.com/javase/7/docs/technotes/guides/jni/spec/functions.html
• https://android.googlesource.com/platform/dalvik/+/donut-release/vm/Jni.c

Code sources

• https://github.com/lunixbochs/usercorn
• https://github.com/slick1015/pad_unpacker (SVC 0 instruction)
• https://github.com/AeonLucid/AndroidNativeEmu