So far in this series, we've exploited the **stack** buffer overflows, ROP chains, format strings. The stack is predictable: local variables go in, function returns pop them out, everything follows a...

In the [previous article](/heap-internals-how-glibc-malloc-works/), we dissected glibc's malloc — chunks, bins, tcache, coalescing, and the metadata that holds it all together. Now we break...

A misused printf can leak stack contents, read arbitrary memory, and write to arbitrary addresses. Format string vulnerabilities are one of the most powerful bug classes in C and they're the key to defeating ASLR. In this post, we exploit printf from leak to shell.

In a previous tutorial we discusses how we can exploit a buffer overflow vulnerability on a Linux machine. I wen through all theories in depth and explained each step. Now today we are going to jump...

DEP makes the stack non-executable — our shellcode can't run. The simplest bypass? Don't inject code at all. Instead, call functions that already exist in libc. In this post, we exploit a stack overflow to call system('/bin/sh') without writing a single byte of shellcode.

Have you ever wondered how attackers gain control over remote servers? How do they just run some exploit and compromise a computer? If we dive into the actual context, there is no magic happening....