TSG CTF 2025 – Global Writer (pwn)
Attachment 📜 Prologue – A Very Trusting Program Every good pwn challenge starts the same way: That’s it. No bounds check.No validation.No fear. Just blind trust. 😈 The Vulnerability – Negative Indexing The array values has a fixed size: But the program never checks whether idx is inside [0..SIZE-1]. That means we can do this: And write before the array. In other … Read more