Papers › Qualcomm Trusted Application Emulation for Fuzzing Testing
Qualcomm Trusted Application Emulation for Fuzzing Testing
Chun-I Fan, Li-En Chang, Cheng-Han Shie
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In recent years, the increasing awareness of cybersecurity has led to a heightened focus on information security within hardware devices and products. Incorporating Trusted Execution Environments (TEEs) into product designs has become a standard practice for safeguarding sensitive user information. However, vulnerabilities within these components present significant risks, if exploited by attackers, these vulnerabilities could lead to the leakage of sensitive data, thereby compromising user privacy and security. This research centers on trusted applications (TAs) within the Qualcomm TEE and introduces a novel emulator specifically designed for these applications. Through reverse engineering techniques, we thoroughly analyze Qualcomm TAs and develop a partial emulation environment that accurately emulates their behavior. Additionally, we integrate fuzzing testing techniques into the emulator to systematically uncover potential vulnerabilities within Qualcomm TAs, demonstrating its practical effectiveness in identifying real-world security flaws. This research makes a significant contribution by being the first to provide both the implementation methods and source codes for a Qualcomm TAs emulator, offering a valuable reference for future research efforts. Unlike previous approaches that relied on complex and resource-intensive full-system simulations, our approach is lightweight and effective, making security testing of TA more convenient.
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