Secure Repackage-Proofing Framework for Android Apps Using Collatz Conjecture

Haoyu Ma

doi:10.1109/TDSC.2021.3091654

Return

Secure Repackage-Proofing Framework for Android Apps Using Collatz Conjecture

2022-09-01

DOI：10.1109/TDSC.2021.3091654

Original

Original request for help

Save

Abstract

En 中文

App repackaging has been raising serious concerns about the health of the Android ecosystem, and repackage-proofing is an important mitigation against threat of such attacks. However, existing app repackage-proofing schemes were only evaluated against trivial adversaries simulated using analyzers for other purposes (e.g., disclosing privacy leakage vulnerabilities), hence were shown effective mainly because their key programming features were not even supported by those toolkits. Furthermore, existing works have also neglected dynamic adversaries capable of manipulating victim apps at runtime, making them vulnerable against such stronger opponents. In this article, we propose a novel repackage-proofing framework, which deploys distributed detection and response sites into the subject app's native partition to cross-verify all its code files. The detection sites transmit obtained integrity metrics to response sites via secure communication channels built on the subject app's own control flows using a specialized obfuscation technique based on Collatz conjecture, turning the repackage-proofing process into complicated implicit flows that are intrinsically difficult to be resolved due to the conjecture's nonlinear dynamical behaviors. We evaluated our framework using sophisticated Android data-flow analyzers. Results showed that our prototype effectively impeded analyses aiming to trace the information flows of its cross-verification.

Keywords:

Payloads

Smart phones

Measurement

Runtime

Communication channels

Weapons

Manipulator dynamics

App repackaging

repackage-proofing

code obfuscation

collatz conjecture