Question 1

How do I escape a Python jail in a CTF challenge?

Accepted Answer

Use functions like eval() or getattr() with string concatenation tricks; the repo suggests methods such as 'A''B' for bypassing filters, based on community tips.

Question 2

What are the best tools for practicing binary exploitation?

Accepted Answer

ROP Emporium for return-oriented programming and how2heap for heap overflow techniques are linked, offering hands-on problems to build skills.

Question 3

Tips vs. other CTF resources like CTFtime or write-ups?

Accepted Answer

Tips is a curated reference of tools and quick techniques, while CTFtime lists events and write-ups provide detailed solutions; use Tips for fast lookups during challenges.

Question 4

How to use GEF for debugging in GDB?

Accepted Answer

Install GEF and leverage commands like 'command' for breakpoint actions and 'watch' for memory access; the debugging section lists essential GDB enhancements.

Question 5

What are _hooks in libc and how are they exploited?

Accepted Answer

_hooks like __free_hook are writeable function pointers in libc; overwriting them allows control of RIP when associated functions are called, useful for bypassing RELRO.

Question 6

How to redress a stripped libc binary for debugging?

Accepted Answer

Use eu-unstrip to merge the stripped libc with debug symbols from matching versions; the repo provides a step-by-step guide including string analysis for identification.

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