Reverse Engineering with Binary Ninja and gdb a key checking algorithm - TUMCTF 2016 Zwiebel part 1

LiveOverflow demonstrates how to analyze a self-modifying CTF challenge using Binary Ninja and GDB to bypass anti-debugging checks.

Part 1 is about understanding the algorithm with binary.ninja and gdb. Zwiebel is a reversing CTF challenge with encrypted self-modifying code. LEARN ON HEXTREE (ad) Learn hacking on Hextree: hextree.io/ Watch this video and more on Hextree: app.hextree.io/courses/yt-reverse-engineering-x86/reverse-en… Join the Hextree Discord: discord.gg/xgQpCQCpvy CHAPTERS 00:00 - The Zwiebel Challenge and Analysis Setup 00:30 - Reading the Input and Locating the Shellcode 01:32 - Reversing the First Encrypted Code Layer 03:38 - Running the Binary and Finding ptrace Anti-Debugging 04:53 - Patching the ptrace Check in Binary Ninja 05:26 - Watching Self-Modifying Code in GDB 07:20 - Recapping the Onion-Layer Bit Checks 08:05 - Planning radare2 and r2pipe Automation SUPPORT Per video: patreon.com/join/liveoverflow Per month: youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join Buy my handwriting font (ad): shop.liveoverflow.com/ WATCH, FOLLOW & READ Second channel: youtube.com/LiveUnderflow Twitch: twitch.tv/LiveOverflow/ Twitter: twitter.com/LiveOverflow/ Instagram: instagram.com/LiveOverflow/ TikTok: tiktok.com/@liveoverflow_ LiveOverflow blog: liveoverflow.com/ Hextree blog (ad): hextree.io/blog #CTF #ReverseEngineering (ad) LiveOverflow YouTube channel is supported by advertisement and product placement.