Flexible software protection

To counter software reverse engineering or tampering, obfuscation tools can be used. However, such to a large degree hard-code how the obfuscations are deployed. They hence lack resilience and stealth in face of many attacks. this problem, we propose novel concept flexible obfuscators, which implement protections terms data structures APIs already present application protected. The tailored they deployed, making them less learnable distinguishable. In our research, concretized protection for opaque predicates. We designed an interface enable reuse existing injected predicates, analyzed their stealth, implemented proof-of-concept obfuscator, evaluated it on number real-world use cases. This paper presents in-depth motivation work, design interface, security analysis, feasibility report based experimental evaluation. findings that predicates indeed provide strong improved but also deployment is costly, should used sparsely protect only most security-sensitive code fragments do not dominate performance. Flexible therefor delivers expensive more durable new weapon ever ongoing arms race.