binja: use LLIR SSA to do better stack cookie detection

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Description

Contributor guide

Research direction

Study the existing stack cookie detection logic in capa/features/extractors/binja/insn.py at the linked line, then explore how to leverage LLIR SSA (low level intermediate representation static single assignment) to improve detection accuracy. Review Binary Ninja's LLIL/SSA documentation and compare with current approach.

Tech stack

python

Domain

securityreverse engineering

Issue type

Refactor

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

4

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-2 days

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

Active

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

Mostly clear

Prerequisites

Binary NinjaLLIR SSAstack cookies

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

30