1. Research and Development Background In recent years, in the military field, the application of virtual interaction technology between humans and combat environments, along with integrated systems, has greatly helped to address many practical issues in real combat training, such as high costs and environmental constraints. This has attracted the attention of military forces worldwide, … Read more
The previous article introduced the phrase “bury the lead” (Too long; didn’t read?). The issue lies with the three words! Some people specifically checked the TV show clips I provided and sent me screenshots: They also asked: The Chinese subtitles are incorrect, I understand. But what about the English subtitle that uses “lede”? Didn’t you … Read more
Abstract PLC (Programmable Logic Controller) is a fundamental control device in critical infrastructure, and its security is crucial for the stable operation of the entire control system. However, with the deepening integration of information technology and industrialization, as well as the advancement of Industry 4.0, the information security issues of industrial control systems have become … Read more
Author | Green Alliance Technology Ge Wu Laboratory Chen Jie Introduction: In firmware analysis, it is often necessary to locate the firmware’s loading address, especially the memory address where Vxworks or Linux kernel is loaded into memory, which facilitates reverse engineering tools like IDA PRO for correct disassembly and string references. In the following sections, … Read more
Author | Green Alliance Technology Laboratory Wei Fan Introduction:The router is the most widely used IoT device, and TP-LINK is the largest router manufacturer in China. Its WDR 7660 model router uses the VxWorks operating system for the first time, offering high real-time performance and reliability, but also presenting significant challenges for reverse analysis. This … Read more
In the previous article, we conducted a simple analysis of firmware. In this article, we will supplement some knowledge of Vxworks and continue our research into firmware content. As this involves operating system content, it is recommended that readers have a basic understanding of operating systems before reading this article, or refer to my article … Read more
Due to various unknown reasons, many universities and container technology communities have shut down multiple image acceleration sites. This has greatly affected work efficiency and development progress. In the face of this predicament, this article will introduce several effective solutions to help you smoothly pull Docker images and continue your development work. Today, I will … Read more
Since I changed my job position, I haven’t researched reverse security for about 4 or 5 years. I thought I would have no connection with this profession again, but unexpectedly, today I had a chance to “enjoy” it again due to a random opportunity. Recently, my colleagues in the company have been constantly reporting that … Read more
In the previous section (HG533 Router Analysis Tutorial: Finding Hardware Debug Interface), we analyzed the hardware structure of the PCB and discovered a UART interface. Through this interface, we achieved a Linux shell management interface. In this section, we will use the methods proposed in the last section to access the device and further debug … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join the technical exchange QQ group with 1000 members, remark 【Official Account】 for faster approval 1. Basic Structure and Common Instructions of Dockerfile FROM – Specify Base Image FROM ubuntu:20.04 This instruction sets Ubuntu 20.04 as the base image. RUN – Execute Command … Read more