Generating FLIRT signatures for Nim and other non-C programming languages
Summary: Cisco Talos announced a new project to automate the generation of custom FLIRT signatures for IDA, aimed at the difficulty of distinguishing malware author code from standard library code in non-C languages like Nim. The work led to a talk at Recon.cx 2023 and a guest blog on Hex-Rays, and the post notes that adversaries increasingly write malware in Go, Rust, or Nim to challenge reverse-engineering tools built for the C family.
Bottom line: Reverse engineers who cannot separate a language's standard library from the author's code spend their time on the wrong functions, and Nim in particular resists the out-of-the-box signature generation that handles other languages.
Read the original at Cisco Talos ↗
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