Ricky Zhou

CTFer/Engineer

[PlaidCTF @PlaidCTF]

MMM takes 1st at @defcon CTF! Had a great time playing with our friends @maplebaconctf and @theori_io as @mmm_ctf_team! 🍁🦆🗝

Great job to Katzebin, StarBugs, and all the other teams! And thanks to @Nautilus_CTF for organizing!

[Maple Mallard Magistrates @mmm_ctf_team]

@PlaidCTF, @theori_io (The Duck), and @maplebaconctf are joining forces to play DEFCON as Maple Mallard Magistrates. Some PPP members also play on The Duck & Maple Bacon, so this allows all of us to keep playing on the same team. See you all at DEFCON finals!

[Ricky Zhou @riczho]

Writeup for pppdddbbb, my PlaidCTF 2022 challenge: https://t.co/DxWnriueD7. Thanks to all that played it!

[PlaidCTF @PlaidCTF]

PlaidCTF is proud to announce visionary innovation and the actualization of experience in the hacking space. We’re moving beyond the ordinary to usher in a new paradigm of pwning. Welcome to the future. Welcome to Plaidiverse.

Join us on April 8 at https://t.co/AZhLDcNKGo!

[tylerni7 @tylerni7]

Holy shit I think we just won @DARPACGC with @MayhemCRS and @ForAllSecure

[stephen @_tsuro]

My v8 exploit for #plaidctf's js_sandbox challenge: https://t.co/M8vFlooGCg

[Jordan Wiens @psifertex]

Slides: https://t.co/xcVAA3HIvi and Binary Ninja release: https://t.co/SqUu3HZHSy from @eipwned and my #infiltrate2015 presentation.

[PlaidCTF @PlaidCTF]

Registration for #pctf2015 is open! Sign up at http://t.co/xuUpiPstip. BTW, we are still looking for awesome sponsors for the event :)

[Tavis Ormandy @taviso]

Well that didn't take long ;-) https://t.co/8cLYIK6IKZ => http://t.co/6Mu2Z2ljmo

[Legit BS @LegitBS_CTF]

Qualify for @_defcon_ CTF 2015 in one of these exciting contests:
https://t.co/ee6ecSbjaS

[Jordan Wiens @psifertex]

If you've played a CTF this year, nominate some stuff for a Golden Flag! http://t.co/NHjmdrNWbV

[PlaidCTF @PlaidCTF]

#PlaidCTF2015 dates announced! Mark your calendars for April 17-19 2015. 48 hours, tons of fun!

[Jay Little @computerality]

Great info in "Suggestions for running a CTF" from @PlaidCTF https://t.co/vYmB3uXhLu #ctf

[ebeip90.cc @ebeip90]

@_defcon_ CTF 2014 winners, Plaid Parliament of Pwning

[Alex Reece @awreece]

PPP @ DEFCON 22

[Chris Evans @scarybeasts]

Project Zero's first technical blog post! If you're very technical and into low level exploitation, it's a must-read: http://t.co/RJsw476CGM

[Ricky Zhou @riczho]

@vnik5287 The problem is that before notify_die runs it accesses current with user gs. I looked a little bit and couldn't avoid it.

[Ricky Zhou @riczho]

@vnik5287 To avoid overwriting the IDT, take a look at the notify_die path in do_general_protection. Wonder if it's possible to bypass SMAP

[Ricky Zhou @riczho]

@BCACTF Hey, I'm a BCA alum (AAST '08) on PPP (the team that made picoCTF). How did you hear about CTFs and is there much interest at BCA?

[Ricky Zhou @riczho]

@mikesiko @Wartortell Just to follow up, it is solvable, my issue was an unlucky bug in a tool.