Sunjoo Park (@grigoritchy) 's Twitter Profile
Sunjoo Park

@grigoritchy

@pksecurity_io

ID: 867363615300501504

calendar_today24-05-2017 12:56:15

27 Tweet

871 Takipçi

87 Takip Edilen

Trend Zero Day Initiative (@thezdi) 's Twitter Profile Photo

Quickly Confirmed! Sunjoo Park (aka grigoritchy) used a logic bug to execute code on the underlying OS through #Parallels. He wins $40,000 and 4 points towards Master of Pwn. #Pwn2Own

Sunjoo Park (@grigoritchy) 's Twitter Profile Photo

I don't know what is a CVE number for my spooler EoP 0-day that i discovered last year. Anyway It was patched by microsoft tuesday patch, So I'm sharing this PoC one of the bug that listed on the screenshot for spooler EoP here: github.com/grigoritchy/po…

I don't know what is a CVE number for my spooler EoP 0-day that i discovered last year. Anyway It was patched by microsoft tuesday patch, So I'm sharing this PoC  one of the bug that listed on the screenshot for spooler EoP here: github.com/grigoritchy/po…
PKSecurity (@pksecurity_io) 's Twitter Profile Photo

Pwn2own 2023 is coming in now. This pwn2own season remind us that we pwned microsoft teams (unfortunately we failed in real round). Here is our first blog post about our journey of pwn2own 2022 microsoft teams RCE. blog.pksecurity.io/2023/01/16/202…

PKSecurity (@pksecurity_io) 's Twitter Profile Photo

PKSecurity 에서 같이 일하실 분을 모집합니다! 하시게 될일은 아래중 하나 입니다. 웹해킹 안드로이드 해킹 윈도우 해킹 지원방법: [email protected] 메일로 자유형식 이력서 보내주세요

Sunjoo Park (@grigoritchy) 's Twitter Profile Photo

First time in Spain. Realized that they use vim for cleaning something. It’s true for me, i use vim too for cleaning my spaghetti code ;)

First time in Spain. Realized that they use vim for cleaning something. It’s true for me, i use vim too for cleaning my spaghetti code ;)
Sunjoo Park (@grigoritchy) 's Twitter Profile Photo

Found two Samsung exynos kernel bug a month ago. Samsung seems using minor security update website for the exynos device since this year. semiconductor.samsung.com/support/qualit…

Found two Samsung exynos kernel bug a month ago. Samsung seems using minor security update website for the exynos device since this year. semiconductor.samsung.com/support/qualit…
Sunjoo Park (@grigoritchy) 's Twitter Profile Photo

I've had experience on blockchain 1 years ago, which was new area for me, did bounty on Immunefi and rewarded. Was good experience for learning new thing :) I've set my wallet address to FTX for reward and remained it, but FTX is now.. anyway writeup is: github.com/grigoritchy/po…

I've had experience on blockchain 1 years ago, which was new area for me, did bounty on <a href="/immunefi/">Immunefi</a> and rewarded. Was good experience for learning new thing :) I've set my wallet address to FTX for reward and remained it, but FTX is now.. anyway writeup is: github.com/grigoritchy/po…
Sunjoo Park (@grigoritchy) 's Twitter Profile Photo

It is interesting to see similar shift/unshift race condition issues that i found and exploited webkit in 2018 (github.com/grigoritchy/un…) are exploited on safari, chrome these days as an in the wild bug

Sunjoo Park (@grigoritchy) 's Twitter Profile Photo

Getting root of Huawei p60 pro(103.1.0.132) with 1-day kernel vulnerability. Completely locked down, an unavailable of panic logs and can't find the firmware image matching to my device were really tricky managing to.