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How to Install the Latest OpenWRT on Arduino Yun
By the time I am writing this, this might be the first article that tells you how to install OpenWRT on Arduino Yun because no one talks about it. Also, Arduino Yun is already reached its end of life, and the version history is not well documented in each article so I will write it…
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How to Find and Connect to Hidden Wifi Network
Suppose you have a device that communicates using wifi, and you already know the password, but you can’t find the SSID name on your phone or computer. How can you connect? In this post, I will show you how to find and connect to the hidden network using Kali Linux. Prerequisites Getting SSID Name Make…
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How to Install Alfa AWUS036NH Driver for Kali Linux
This wifi adapter is an important weapon for penetration testers due to its feature that supports monitor and packet injection mode on a 2.4Ghz network. However, even if Alfa said it is already supported out of the box in Kali Linux, I found it unstable out of the box. Sometimes it goes undetected. So here…
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How to Do Buffer Overflow Attack on 64bit Machine
Professor’s course material was out of date. He made an example of a buffer overflow attack several years ago. Then here I am, asked to fix the code to work on a modern machine, 64bit Kali Linux. There should be no difference with other Linux; you can practice this on any 64bit Linux machine. Prerequisite…
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This is The Most Expensive Thing That I Have Repaired
That day, Professor told me to start learning about power side-channel attacks. Our lab has some ChipWhisperer lite kits, and I took one. I took the course and learned how to do CPA and DPA with invasive methods, which we need to connect physically to the victim chip to measure the power trace. I did…
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Problem When Building Old OpenSSL Version on The New System
The old OpenSSL seems to have a problem when built using a newer system. I got this problem when compiling OpenSSL 1.1.0f on my Ubuntu 22.04. For example in my case here the problem is in line 17 on Configure file and the line were like this: Some people tried changing the lines with qw/glob/…
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How to Access SOM9331 Serial Console in Linux
I got this old hackable mini router board. It comes with OpenWRT but I can’t seem to connect this via USB Serial. It turns out that the driver is not installed. Installation is quick but there is a minor change needed in order to build the driver on a recent kernel. So will write here…
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How to Enable HTTPS on Your Apache Ubuntu Web Server
I thought this is an easy task, but after searching for various ways on the internet, it is not as simple as I imagined. There are many ways to enable HTPPS on your web server depending on what server software is used, the operating system, and where the server is running. In my case, I…
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Now I Understand: What is Oblivious RAM?
ORAM is the acronym of an Oblivious Random-Access Machine. The main idea is to hide the access patterns from attackers. For example, when a client tries to access data stored in the server, the server cannot gain any information about the user access pattern. Imagine data storage, where each data is inside a block, and…
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Easy Fix when Pop-OS Login Screen Shown on The Wrong Monitor
I turned on my newly installed Pop OS and then suddenly the login screen is located on the left monitor. It’s horrible! Because I put my left monitor into a vertical position, and the Pop OS login screen orientation is in horizontal mode. Therefore I had to tilt my head -90 degrees to type my…
