Dimitri 0s

@Ch0pin

Senior Security Researcher @Microsoft. Developer of https://github.com/Ch0pin/medusa

Dalvik

Joined August 2017

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Dimitri 0s@Ch0pin · Jul 16

Lots of interesting stuff coming this fall…I’ll be flying to Berlin and Luxembourg — talks, hacks and mobile related stuff See you at Nullcon in September and Hack.lu in October!

Ch0pin's tweet image. Lots of interesting stuff coming this fall…I’ll be flying to Berlin and Luxembourg — talks, hacks and mobile related stuff
See you at Nullcon in September and Hack.lu in October!

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Dimitri 0s@Ch0pin · Jul 10

🚀 Medusa 3.1.0 is out! Now compatible with Frida ≥ 17 and packed with new modules & improvements. github.com/Ch0pin/medusa/… #Medusa #Frida #AppSec #AndroidPentesting

Ch0pin's tweet card. 🚀 Summary Frida ≥ 17.0.0 compatibility iOS WebViews: Web Inspector Enable the Web Inspector for iOS WebViews (commit dda43c4) . Null checks in Broadcast module Prevent crashes by adding null-safet...

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Dimitri 0s@Ch0pin · Jul 3

Excited to share that my latest research has been accepted at NULLCON Berlin! It’s a follow-up to my previous work presented at Black Hat Europe — this time, we’re diving even deeper. See you in September in Berlin! 🇩🇪

Ch0pin's tweet image. Excited to share that my latest research has been accepted at NULLCON Berlin! It’s a follow-up to my previous work presented at Black Hat Europe — this time, we’re diving even deeper. See you in September in Berlin! 🇩🇪

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Dimitri 0s@Ch0pin · Jul 1

Here are some thought-provoking unanswered questions🤔: - Is free will an illusion? - Can morality be objectively defined without culture or religion ? ...and the greatest of all..... - Why do people willingly deobfuscate Java code?

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Dimitri 0s@Ch0pin · Jun 11

Kudos to @Wixter_07 for solving ‘Four’ and ‘Secure Browser’! Friendly reminder :) Looks like ‘Insider’ is still holding strong with only 11 solves so far github.com/Ch0pin/uncrack…

Ch0pin's tweet card. A list of bizarre crackmes. Contribute to Ch0pin/uncrackable development by creating an account on GitHub.

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Dimitri 0s@Ch0pin · Jun 5

Congrats to @r_srikesh for solving four — amazing job! github.com/Ch0pin/uncrack…

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Dimitri 0s Retweeted

Intigriti@intigriti · May 27

Getting started in mobile hacking? 😎 Check out Medusa by @Ch0pin! A framework to help you pentest Android & iOS mobile applications! 🔗 github.com/Ch0pin/medusa

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Dimitri 0s@Ch0pin · May 19

Want to add your challenge to github.com/Ch0pin/uncrack… ? Go ahead and open a PR! Just make sure it showcases a real vulnerability — ideally a whole class. Current ones focus on interesting behaviors like bypasses. Would love to include yours! #AndroidSecurity

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Dimitri 0s@Ch0pin · May 14

Great work @joo_elsaka on solving “four” from github.com/Ch0pin/uncrack… — nicely done, mate!

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Dimitri 0s@Ch0pin · May 13

While vendors dismiss the risk of vulnerabilities that require a third-party app to exploit, considering such scenarios unlikely to occur in practice Google bans Google Bans 158,000 Malicious Android App Developer Accounts in 2024 thehackernews.com/2025/01/google…

Ch0pin's tweet card. Google blocked 2.36M harmful Android apps in 2024, banned 158K developers, and secured 10M devices from 36M risky installs to enhance Play Store safet

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Dimitri 0s@Ch0pin · May 4

Yet another brilliant solution to the Insider challenge — this time by @AlQa3Qa3M0x0101 👏 Exceptional work!

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Dimitri 0s@Ch0pin · Apr 28

The Insider ( github.com/Ch0pin/uncrack…) is not for quitters — and @zep3hyr clearly isn’t one 😎. Well done on solving this challenge! 👏

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Dimitri 0s@Ch0pin · Apr 24

The level of ignorance in mobile pentesting is reaching alarming levels.

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Dimitri 0s@Ch0pin · Apr 22

easydmarc.com/blog/google-sp…

Ch0pin's tweet card. Learn how a Google spoof used a DKIM replay attack to bypass email security and trick users with a fake subpoena in this real-world phishing case.

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Dimitri 0s Retweeted

0xor0ne@0xor0ne · Apr 10

x64 Linux Binary Exploitation by @Ch0pin Basic: valsamaras.medium.com/introduction-t… Return into lib: valsamaras.medium.com/introduction-t… RoP Chains: valsamaras.medium.com/introduction-t… Stack Canaries: valsamaras.medium.com/introduction-t… ASLR: valsamaras.medium.com/introduction-t… #exploit #cybersecurity

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Dimitri 0s@Ch0pin · Apr 9

CVE-2025-29805: My latest contribution involved discovering a vulnerability in Outlook for Android that could have allowed attackers to read and write sensitive user data. msrc.microsoft.com/update-guide/e…

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Dimitri 0s Retweeted

0xor0ne@0xor0ne · Apr 6

Excellent intro to x64 Linux Binary Exploitation by @Ch0pin Basic: valsamaras.medium.com/introduction-t… Return into lib: valsamaras.medium.com/introduction-t… RoP Chains: valsamaras.medium.com/introduction-t… Stack Canaries: valsamaras.medium.com/introduction-t… ASLR: valsamaras.medium.com/introduction-t… #exploit #infosec

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Ryan Els@RyanEls4 · Apr 28

How to confuse a Python user 😂👇🏻

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0xor0ne@0xor0ne · Apr 21

Collection of links to cybersecurity related resources (write-ups, blog posts and papers) github.com/0xor0ne/awesom… #infosec #cybersecurity

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reverseame@reverseame · Apr 18

Android Kernel Adventures: Insights into Compilation, Customization and Application Analysis #AndroidKernel #Compilation #Customization #ApplicationAnalysis #SecurityAnalysis revflash.medium.com/android-kernel…

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