Systems Programming

memfd_create: Anonymous RAM Files and Volatile Storage in x64 Assembly

Traditional disk storage leaves traces. memfd_create enables anonymous, volatile files that reside exclusively in RAM. Learn to implement this in x64 Assembly for low-footprint operations.

Linux x64 Assembly: Syscalls, Registers, and the .bss Segment

Go behind the scenes of the Linux Kernel. Learn the register protocol for syscalls and why the .bss segment is essential for efficient, zero-disk memory reservation.

RFC 1071 Checksum in x64 Assembly: One's Complement Implementation

A malformed packet is a dead packet. Learn how to implement the official RFC 1071 checksum algorithm in Assembly to ensure your custom ICMP data bypasses kernel drops.

Building a Low-Level ICMP Sniffer in x64 Assembly (Raw Sockets)

Scapy or C are easy, but true control lies in the CPU cycles. Learn how to build a raw socket sniffer from scratch in x64 Assembly, bypassing libc for pure kernel interaction.

Solving IP Endianness in x64 Assembly: A Single-Pass Algorithm

Printing 192.168.1.5 instead of 5.1.168.192 is a common Assembly pitfall. Master a backward-build algorithm that handles Byte Order conversion without extra memory cycles.