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Calling a function in C without naming it

Author describes bypassing a school's automated code grading system that blocks disallowed function names via AST analysis. By leveraging position-independent code, GOT lookups, and indirect jumps, they call execve without ever referencing the symbol directly in source code.

Background

This is an overview of a CTF-style technique used to bypass academic integrity or code-checking systems that filter disallowed function symbols from source code analysis.

Source
Lobsters
Published
Oct 8, 2026 at 02:15 AM
Score
7.0 / 10