It is important that from time to time, machines running Docker are cleaned because otherwise Docker leftovers will start piling up and eating precious storage space.
An easy walkthrough on enabling instant push notifications for logins and logouts on a Linux system with Pushover. You will need a Pushover account. Pushover is a proprietary service for smartphones, with a single-time purchase application which includes a generous free quota (never ever surpassed the “free” limits for any of my personal projects, and I receive sometimes more than 20 notifications per day). Register for a free account here.
Ansible is an automation platform for managing machines. When combined with Proxmox, it becomes a ridiculously powerful tool to orchestrate virtual datacenters.
TL;DR: I will try to stick to a bi-weekly post schedule. 1 post every 14 days.
This is a relatively easy to crack machine. Let’s start with the basics: Reconnaissance.
An Ethical Hacker is someone who specialises in computer security through what’s known as “Penetration Testing”, which are series of exercises carried out against computer systems to spot vulnerabilities and weaknesses.
Once you have gained shell access on a machine, you will often find the prompt extremely limited, especially if you have used manual exploitation. In these cases, the shell often cannot perform basic tasks that you would expect from a fully interactive shell prompt like Bash, or zsh. You will also be unable to run intensive interactive commands such as the Vim text editor, or ncurses-based programs.
Note: This issue appears on Proxmox 5.2-x, always check the date of the post when troubleshooting your systems.
Nowadays, spamming is a very common technique, and nobody can deny that. Spamming is so cheap that even a 10% opening rate is a tremendous success, because sending e-mails doesn’t require paying fees to ISPs (like you would with mass SMSs and robocalls), and it also doesn’t require hiring anyone to take the time to manually write and send e-mails (as opposed to postal spam, which have to be physically delivered into mailboxes by people), when you can just buy e-mail addresses in bulks by thousands of providers that sell active e-mail addresses by prices so ridiculously affordable, it lowers the barrier to entry dramatically.
It’s been a while since I joined https://www.hackthebox.eu/. Probably more than a year. And I haven’t really had the time to spend trying to break into the machines, because of my university studies, but now summer is coming, so I will be able to dedicate more resources to it.
Another cybersecurity post. Focused on binary (dis)assembly.
I’m currently studying malware analysis, so I wanted to write a post on the tools I’ve been using recently, to serve as a reference for me and hopefully for anyone interested in binary reversing.
I find silence to be grossly underestimated. We live in an era of permanent distraction. Companies use loud, aggressive marketing in the form of advertisements to grab your attention and get you to buy whatever it is they’re selling. Our smartphones have become distraction devices that instead of boosting our productivity, and increase our focus, are loaded of applications that send notifications indiscriminately, connecting us to real-time events instantly.
The blog now supports comments!
In the past, I used to struggle with my productivity, no matter how hard I seemed to study, my grades didn’t reflect it. I was quite stubborn in believing I wasn’t at fault, like some kind of genius who nobody understood, and reading quotes like this one certainly didn’t help me understand it was actually my problem. I was in denial.
At first, I really disliked Electron and JS-based text editors, like Atom and VSCode, but after learning Vim, and finding many problems with my plug-ins, on different languages (such as MIPS assembly, Java and VHDL), I decided to give VSCode a try, and I have been very impressed by how well Visual Studio Code works. It’s much faster than JS-based editors used to be, it has amazing community support, and I’m generally faster, and more productive using it. It has fixed a lot of its shortcomings, like its speed.
In this article, I want to explain why I use a MacBook. I am convinced it is the superior desktop OS, but I also think everyone should use what suits them. In my case, that would be macOS.
The Internet nowadays is a very messy place. Identity theft, e-mail confirmations, instant notifications, mobile devices, multiple accounts, data leaks, account dumps, service breaches, malware that steals your bank’s information, scammers, identity theft…
It’s very common, in certain situations, to share OOXML files such as .docx from Microsoft Word and .pptx from Microsoft PowerPoint. I’ve seen this happen most often in schools, universities, and educational institutions in general. I will try to explain why this is generally a bad idea.
It has been a while since I wanted to make an alarm system. This idea has been on my mind ever since I got an alarm from Chuango. They are a burglar alarm vendor that releases kits you can install yourself. These kits communicate over wired and wireless connections, have no maintenance fees and have varying features depending on the kit chosen (some kits have GSM and PSTN, some others have WiFi, etc).
This is my first post.