Netgear

Analysis of Netgear Firmware and Backdoor Implantation

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Analysis of Netgear Firmware and Backdoor Implantation

This article mainly introduces the detailed format of certain versions of Netgear wireless router firmware, as well as how to implant a backdoor into the firmware and repack it. Finally, it reverse analyzes the official packaging tool. 1. Introduction to Netgear Netgear, translated into Chinese as 网件, is a company dedicated to providing easy-to-use and … Read more

Analysis of Stack Overflow Vulnerability in Netgear R8300

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Analysis of Stack Overflow Vulnerability in Netgear R8300

Vulnerability Description: There is a stack overflow vulnerability in the sub_25E04 function of the upnpd file. The length is not checked during strcpy, causing an overflow and allowing for a ROP attack to achieve command execution. Version: 1.0.2.134 Vulnerability Analysis and Reproduction1. Firmware Simulation Using qemu system simulation: qemu startup: qemu-system-arm -M vexpress-a9 -kernel vmlinuz-3.2.0-4-vexpress … Read more