Offensive and defensive security stuff focus on linux environment.
Virtualization
In this article series you are going to learn how to develop your own hypervisor for virtualization in linux ecosystem. Also this series will help to learn low level virtualization.
Firmware
cpuid is a processor specific instruction used to get processor's information and features. In this post we are going to learn how to extract those information using inline assembly in c.
Malware
Here are few more important questions with detailed answers for malware analysis interview. Topic covers in this part is Dynamic analysis, static analysis and debugging.
Security
The risk of systems getting physically compromise, particularly portable systems such as laptops, puts sensitive data at risk of compromise. Encrypting its data mitigates the risk of getting exposure if system is lost.
Virtualization
If you want your hands on arm architecture assembly then you probably would be wondering how can I generate the *ARM* assembly or use ARM toolset in general inside my intel x86 or x64 architecture system. In this article we will explain you how you can do that by using qemu and chroot.
Security
Discover SELinux, a security module that provides extra protocols to ensure access control security. It supports mandatory access controls (MAC) and is an integral part of RHEL’s security policy.
Exploit Development
Off-by-one vulnerability is little difficult to find and hence can be present in big softwares.It can cause due to not aware of fact if your string provided is not null terminating then strcpy will add a null terminator at the end of string,
Firmware
Intel system comes with UEFI, UEFI is a proprietary and closed-source operating system that can be exploited.NERF (Non-Extensible Reduced Firmware), an open source software system developed at Google can replace almost all of UEFI firmware with a tiny Linux kernel and initramfs.
Containers
Containers are the future when it comes to using and shipping applications. But Linux containers or LXC can be used for more than just that. This article covers the use of LXC on a daily basis as well as for production.
Security
Containers are tools for isolation which use namespaces to archive that.They are called light weight virtualization because they provide process level isolation only, means they depend on linux kernel.
Security
You can secure your linux system by isolating the malicious program or risky tasks using Sandboxing in different ways to stop it from affecting your main system.Sandboxing means providing a safe environment for a program or software so you can play around it without hurting your system
Virtualization
In the previous part we talked about how we can create sparse file storage and create file system to mount or share across network. Now we will look into some common disk operations that we can do with this storage like scaling, encryption etc.