By applying symbolic execution and the Z3 theorem prover to BPF bytecode, we’ve automated the generation of malware trigger packets, cutting analysis time from hours to seconds.
AI Summary
Cloudflare automated the generation of "magic packets" for Linux malware embedded in BPF socket programs using symbolic execution and Z3 theorem prover. This approach can work backward from malicious filters to automatically generate trigger packets, reducing manual analysis time from hours to seconds. By employing Z3 and scapy tools, researchers can now automate the creation of valid magic packets, streamlining security investigations and analysis workflows.
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