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RPRavidu Priyankararavindu-priyankara.hashnode.devJun 8 · 18 min read

The Case of the Disappearing eBPF Instruction: Inside Map FD Relocation and BPF_LD_IMM64

While reading the disassembly of a compiled eBPF program I was working on, I noticed something strange — the 6th instruction was missing. Reading through the full disassembly again, I realized it wasn

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CZCristian Zapata Ariastheposintech.hashnode.devFeb 6 · 8 min read

Step by step interactive debugger for Rust

At the beginning, when I was working as a frontend developer and made a change in the code, I saved, and instantly it compiled automatically and the results showed up in the browser. It felt almost magical and very simple. But when I started programm...

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KNKaruppiah Natarajankaruppiah.devDec 18, 2025 · 4 min read

Profilers!

So, today, we had an issue in one of our internal systems called API Tester. It was very slow. Only today it was slow, and the CPU usage was very high according to our monitoring systems, especially since today morning. Before noticing the CPU usage,...

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TTalsonripp3rdoc.hashnode.devSep 15, 2025 · 4 min read

Building a Kernel for Debugging/Exploit Development

Installing the Target Kernel Grab the kernel source code and headers from github and the apt package manager # update the packages sudo apt update # Install the following packages so that all essential components for kernel sudo apt install -y \ lin...

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박박서경psk-study.hashnode.devAug 20, 2025 · 3 min read

GDB Debugger

🐞 Introduction to GDB (GNU Debugger) 1. What is GDB? GDB (GNU Debugger) is a powerful tool that allows you to: Run your program step by step Pause at specific lines or functions (breakpoints) Inspect variables and memory in real-time Trace the c...

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Ppwn8pwn8.xyzJul 20, 2025 · 3 min read

[DUCTF2025] fakeobject

week นี้ไม่ค่อยว่างมีนัดไปนู่นนี่ ว่างเล่นข้อเดียว ถือว่าแปลกใหม่พอสมควร ไม่เคยทำ pwn บน python เลยจั้บ มาดูกันว่าถ้าเรา Arbitrary Write บน Python เราทำไรได้บ้าง โจทย์ให้มาหนึ่งไฟล์ fakeobj.py สั้น ๆ ง่าย ๆ คือ write ได้ 72 bytes ทับที่ตัวแปร obj ที่...

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MMMd. Monowarul Amin 200042112heap-and-userafterfree.hashnode.devJun 29, 2025 · 1 min read

Glibc heap and Use After Free Vulnerability

Download the pdf file from here: https://docs.google.com/presentation/d/19DPYG_VQuFxAqGdnwWRH_-C_Gob0iadybVn7EY5dlmI/edit?usp=sharing

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MMMd. Monowarul Amin 200042112stackandbufferoverflow.hashnode.devJun 29, 2025 · 1 min read

Stack_And_Buffer_Overflow

You can download the full PDF here: [Stack-and-Buffer-Overflow (PDF)](https://docs.google.com/presentation/d/1UzXhfC7u_1dTVMI27jaj0bVfAbs-670A/edit?usp=sharing&ouid=100386755993387819692&rtpof=true&sd=true)

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Jjayapshrivastavajayapshrivastava.hashnode.devApr 30, 2025 · 9 min read

From Kernel Panics 🌩️ to Clarity 💡: A Developer’s Journey with User-Mode Linux

The Quiet Beginning Kernel development is a quiet storm — a space where clarity must be carved from chaos. Crashes aren't failures; they're whispers from beneath the surface. In this space of disruption, User-Mode Linux (UML) offers a calm sanctuary....

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Cclockworkclockwork.hashnode.devMar 10, 2025 · 11 min read

Gnu Debugger

.noise welcome_individual (friendly) Today we are looking into GDB, the Gnu Debugger. Gdb is relatively old software and good documented, but it can be a hassle sometimes, especially if you never really worked with it. So you might ask “Where do i ev...

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#gdb

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Trending tags this week

The Case of the Disappearing eBPF Instruction: Inside Map FD Relocation and BPF_LD_IMM64

Step by step interactive debugger for Rust

Profilers!

Building a Kernel for Debugging/Exploit Development

GDB Debugger

[DUCTF2025] fakeobject

Glibc heap and Use After Free Vulnerability

Stack_And_Buffer_Overflow

From Kernel Panics 🌩️ to Clarity 💡: A Developer’s Journey with User-Mode Linux

Gnu Debugger