Android-Rootkit

A rootkit for Android. Based on Android platform based linux kernel rootkit from Phrack Issue 68

Part of ISA 673 a class project. Adding it here just because there is not just enough documentation out there to do this for Android

I appreciate any pull requests as long as they extend functionality and dont do harm

Kernel Build Specs

• Using kernel tree from here

• Using ROM image from here

• Using Android NDK toolchain 4.4.3 from Google.

• Tried and tested on HTC Bravo running kernel version 2.6.38.8

Module Information

Filename: sys_call_table.ko Desciption: This rookit is developed to intercept the following calls

• SYS_WRITE
• SYS_READ
• SYS_CREAT
• SYS_MKDIR
• SYS_RMDIR
• SYS_KILL
• SYS_OPEN
• SYS_CLOSE
• SYS_GETDENT
• SYS_UNLINK
• SYS_KILL

Author: Hitesh Dharmdasani hdharmda@gmu.edu

License: GPL v2

Depends: Android NDK, Kernel source tree of target

Vermagic: 2.6.38.8-cos-bravo-jellybean+ preempt mod_unload ARMv7

Other details

• The source tree will not complile to give you a zImage that you should use. A hack around it was to just use a pre built rom with the same specs
• If you are facing vermagic issues. Fix them by the obvious.
  • Fix entry in utrelease.h
  • Fix entry in kernel.release
  • DO NOT 'make' the kernel source tree after you do this
• Edit the makefile to suit your paths for the NDK and the kernel source tree for your Android Operating system
• The rootkit compiles as a kernel object and needs to be run on the phone.
  • # insmod sys_call_table.ko
  • # ./sys_call_table_inst
• Use dmesg to debug