Exploit Fails? Debug Your Shellcode - bin 0x2B

LiveOverflow demonstrates how to test, step through, and debug shellcode using GDB and INT3 breakpoints.

I often get questions about exploits that do not work, and sometimes the problem is the shellcode. This video shows how to test the bytes, use INT3 breakpoints, step through shellcode in GDB, and produce a useful debugging report. LEARN ON HEXTREE (ad) Learn hacking on Hextree: hextree.io/ Watch this video and more on Hextree: app.hextree.io/courses/yt-basic-buffer-overflows/common-expl… Join the Hextree Discord: discord.gg/xgQpCQCpvy Haxember 2019 Playlist: youtube.com/playlist?list=PLhixgUqwRTjzTvVyL_8H-DJBf8VT3uiu2 CHAPTERS 00:00 - Testing shellcode in a minimal program 01:07 - Checking execution with an INT3 trap 01:44 - Investigating the segmentation fault in GDB 03:18 - Comparing memory with the intended raw bytes 04:39 - Finding the missing echo escape flag 05:31 - Stepping through corrupted shellcode 07:12 - Finding the shellcode entry with a backtrace 07:45 - Breaking before the call into shellcode 08:43 - Building a useful test case when asking for help 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 #BufferOverflow #BinaryExploitation #LiveOverflow (ad) LiveOverflow YouTube channel is supported by advertisement and product placement.