Javier Jimenez
Linux Heap Exploitation Intro Series – (BONUS) printf might be leaking!
Intro Hi there (again)! This series are going to an end as the next and feasible step is the widely known buffer overflow and its analysis in the heap and, I am not too convinced about it since the unsafe unlink method is long gone. But don’t be sad, today we are going for a bonus one! During the last post (double free attacks) one I stumbled across some weird behaviour that caught my attention by functions of the vfprintf.c family (for example printf or puts functions).
Painless intro to the Linux userland heap
-1 – Pre-Intro When looking at heap exploit tutorials most of the time I found myself lacking knowledge on the actual implementation and, soon, had the urge of knowing how it’s allocated and freed and why it’s done that way, memory wise.
-0.9 – ptmalloc2 The best source of knowledge with regards to the implementation of the heap is itself, the source code. Do not fear it, thankfully it is widely commented!
Prev
Page 2 of 2