Uploaded July 2016 | Updated September 2026, 2 weeks ago

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hackarcana.com ← check out my courses and CTF challenges ​  
00:15:20 - Stream intro
00:19:18 - First challenge intro (ReRe)
00:25:14 - ReRe: de-obfuscation of the "underscore" function
01:11:07 - Q&A
01:13:20 ~break~
01:21:18 - Summary of 1st part
01:23:43 - ReRe: main de-obfuscation
01:28:02 - ReRe: Hooking the md5 class
01:36:45 - ReRe: Looking for other things to hook
01:41:08 - ReRe: Hooking the zip function
01:50:12 - ReRe: Solving it the hard way
01:53:10 - ReRe: Q&A
01:54:24 - Linux executable: Intro
01:55:22 - Linux executable: Reverse engineering
02:19:28 - Q&A
02:21:34 - End
(ToC by thomapple - thanks!)

My first livestream in English, during which I've shown how to approach solving ReRe (RE 500) from CONFidence Teaser CTF, and EZPZ (RE 100) from CONFidence CTF.

ReRe: http://gynvael.coldwind.pl/?id=602
EPZP: drive.google.com/open?id=0B5y5AGVPzpIOeGpwa1VNWXVOdHM
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--- Links:
hackarcana.com ← my courses, articles, and CTF challenges
discord.gg/hackarcana ← hackArcana discord
https://gynvael.coldwind.pl/discord ← my / Paged Out! discord
https://pagedout.institute/ ← my Paged Out! magazine
https://gynvael.coldwind.pl/ ← my blog
https://bsky.app/profile/gynvael.bsky.social ← my Bluesky

--- Music in intro/outro:
TheFatRat - Monody feat. Laura Brehm
Watch the official music video: tinyurl.com/monodytfr
Listen to "Monody": thefatrat.ffm.to/monody
Follow TheFatRat: https://ffm.bio/thefatrat

nervous_testpilot - Office (Frozen Cortext Original Soundtrack)
nervous_testpilot - Our Heroes (Frozen Cortext Original Soundtrack)
nervous_testpilot - Focus (Frozen Synapse Original Soundtrack)
soundcloud.com/nervous_testpilot
nervoustestpilot.bandcamp.com

Stellardrone - Between the Rings
stellardrone.bandcamp.com/album/between-the-rings
soundcloud.com/stellardrone/between-the-rings
youtube.com/@StellardroneMusic

--- Team:
Shoutout and big thanks to my team who have helped me with livestreams and IRC/Discord over the years!
→ foxtrot_charlie
→ KrzaQ
→ masakra
→ hebi
→ maryush
→ disconnect3d