Description
The CHERI ISA extension enables modern RISC CPU architectures such as RISC-V to enforce memory safety in C/C++ programs. Recent academic works use CHERI for point solutions like constructing enclaves, verifying C programs, or hardening bytecode interpreters, but since the original construction of the CHERI-BSD OS - a FreeBSD port leveraging CHERI capabilities, by Cambridge University - little has been reported on what issues and problems arise when porting an existing operating system to benefit from hardware capabilities. This work distills problematic patterns and their solution from what we believe has been the first successful port of a full Linux system to CHERI hardware. In the interest of reproducibility and possible future CHERI or porting style improvements, we also report on the performance impact of our setup.
Infos pratiques
Prochains exposés
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Tackling obfuscated code through variant analysis and Graph Neural Networks
Orateur : Roxane Cohen and Robin David - Quarkslab
Existing deobfuscation techniques usually target specific obfuscation passes and assume a prior knowledge of obfuscated location within a program. Also, some approaches tend to be computationally costly. Conversely, few research consider bypassing obfuscation through correlation of various variants of the same obfuscated program or a clear program and a later obfuscated variant. Both scenarios are[…]-
Malware analysis
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Binary analysis
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Obfuscation
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