HC-128 Shellcode Crypter (x64)

In this post I will introduce custom shellcode crypter based on HC-128 cipher. Introduction to HC-128 cipher The HC-128 algorithm is a software-efficient, synchronous symmetric stream cipher designed by Hongjun Wu. The cipher makes use of a 128-bit key and 128-bit initialization vector. I will use HC-128 library developed in ECRYPT II project and simple stack execve shellcode. /bin/sh execve …

Egg Hunters on Linux

In this blog post I will discuss egg hunters. What are egg hunters, why and how to use them. Before I dive into realm of egg hunters it will be convenient to quickly recap basics of VAS (Virtual Address Space) model for Linux platform. VAS – Virtual Address Space For every running process there is created 4GB virtual memory which …