HackMag – Page 11 – Security, malware, coding, devops

ZetaSDR: Assembling a software defined radio with your own hands

SDR (software defined radio) is a radio communication system that uses software to convert radio signals into digital code. This provides tremendous possibilities for the analysis of radio signals, and plenty of SDRs are currently available on the market. In this article, I will explain how SDR operates and will show how to create a radio receiver with your own hands. Concurrently, I will do my best to minimize the loads of math required to understand the topic.

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Useless Crap? No, not nearly! Advance your binary exploitation skills by solving a sophisticated CTF challenge

Written by Pavel Blinnikov

PWN challenges are my favorite tasks at CTF contests. Such tasks effectively train you in real-life code analysis, while their write-ups usually describe all fine details, even those already addressed by other authors. Today, I will explain how to solve a task named “Useless Crap” by its author (it’s available on TG:HACK 2020). The author estimates its difficulty as hard. The task is very challenging indeed, and it took me almost twelve hours to complete it at the contest.

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Poisonous Python. Coding malware in Python: a locker, an encryptor, and a virus

Written by Valery Linkov

Why write malware in Python? First, to learn the basics of malicious coding and, second, to practice in this programming language. After all, malware written in Python is widespread in this wild world, and many antiviruses don’t detect it.

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Battle smartphone. How to transform your Android device into ‘hackerphone’ with Termux and Kali

Written by Ghoustchat

In sci-fi movies, hackers use cellphones to compromise heavily protected networks. Up until recently, it was just a fantasy, but now this fantasy becomes a reality. In this article, I will explain how to transform your phone into a powerful hacking tool.

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Spying penguin. Windows post-exploitation with a Linux-based VM

Written by s0i37

Windows-based systems are significantly more resistant against MITM attacks in comparison with Linux-based ones. The reason is simple: Windows does not include a handy mechanism to forward transit packets. Today, I will explain how to use a minimalist Linux system running on a virtual machine as a gateway. The attack also involves bridged network interfaces that grant the guest OS full L2 access to the network segment where the compromised Windows system is located. The VM will be deployed using VirtualBox.

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MicroB. Writing BASIC in assembler language and squeezing it into 512 bytes

Written by HackMag

Want some practice in assembler? Today, I will show step-by-step how to write a BASIC interpreter and run it from the boot sector of your PC. My interpreter includes overlapping subprograms with branching recursion – otherwise, BASIC won’t fit in 512 bytes. It’s quite possible that this project becomes the most sophisticated program in your life. But after writing it by your own hands, you will be able to rightfully call yourself a hacker.

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Android security: evolution from version 1 to version 11

Written by Eugene Zobnin

For a long time, Android was known as a slow and insecure OS for losers unable to afford an iPhone. Is this still true, and was Android really so bad? Leaving aside the interface smoothness and OS capacity, I am going to briefly discuss the evolution of the worst element in Android: its security system.

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