Christopher Bleckmann-Dreher - DREHSEC IT Security&Research

Christopher Bleckmann-Dreher

security geek, 🄲🅈🄱🄴🅁, selfhoster, beer lover Opinions are my own Pragmatist, stop talking and DO&ACT http://cyberklats.ch ᴅᴇ-ᴀɴᴏɴʏᴍɪᴢᴇʀ ᴡʜᴏ ᴇɴᴊᴏʏꜱ ᴏᴘꜱᴇᴄ ꜰᴀɪʟꜱ

📊 Exciting Weekend Project Reveal: wpad.je Tracker 🌐

📊 Exciting Weekend Project Reveal: wpad.je Tracker 🌐

🚀 I'm thrilled to share the results of my latest weekend project: the wpad.je Tracker! This innovative tool provides fascinating insights into web traffic patterns and proxy usage. https://wpad.je 🖥️ Top Stats After Just One Weekend: 273 requests from a single IP (99.65.78.*) 463 requests

Bolt.new: The Public Workspace Roulette - Stackblitz's Unintended Feature

Bolt.new: The Public Workspace Roulette - Stackblitz's Unintended Feature

In the world of technology, there's often a fine line between a "feature" and a "vulnerability." Recently, I stumbled upon a very interesting quirk in Stackblitz's new service, Bolt.new, and well... let's just say it might make you question

The Day I Almost Became a Solar Supervillain

The Day I Almost Became a Solar Supervillain

Picture this: It's a scorching summer day, and I'm sitting in my dimly lit home office, cursing at my air conditioner for choosing the hottest day of the year to break down. As I fan myself with an old magazine, I start daydreaming about having unlimited

Exchange 💔 for now and ever

Drei Monate nach der #Cybersicherheitswarnung des @BSI_Bund zu #verwundbaren #Exchange-Servern (https://t.co/dbWKEr4FpR) sind aktuell noch immer mindestens 42% bzw. 18.000 der Exchange-Server mit offenem #OWA in Deutschland für eine oder mehrere #RCE-#Schwachstellen verwundbar. pic.twitter.com/LxDDaKouBX — CERT-Bund (@certbund) June 18, 2024 Exchange on Premise,

Bye Bye pcTattletale - When your SHIT hits the fan

Bye Bye pcTattletale - When your SHIT hits the fan

Over the last week, I enjoyed seeing how a stupid stalkerware provider was completely knocked out. It all started on the 22nd of May, when TechCrunch reported about "Spyware found on US hotel check-in computers". A week before the security researcher Eric Daigle contacted TechCrunch about the issue.

Cyberwar ❤️ The way I like

Cyberwar ❤️ The way I like

It seems that in russia a LED wall has been hijacked. The text "Happy new year!" has been replaced by "Slava Ukraini!" instead. A Russian from Velikiy Novgorod city has purchased Christmas lights that were supposed to spell "Happy new year!" He received lights

Operation Triangulation

Operation Triangulation

The guys from Kaspersky revealed a crazy iOS attack chain that they caught in action against some of their employees. The complete attack chain is just millions of $$$ in exploit prices. For example, the initial PDF exploit is caused by a True Type code part from the early 90s. 25

My Google Play API

My Google Play API

Today it finally happened, after more than a decade of mobile app pentests and security reviews I was so fucking bored of how complicated it could be to just get the latest APK of a certain Android App without using a real Android device or a proper Emulator with all

Current Twitter Phish

My timeline is currently flooded with posts like the following: Following the link https://funroundy.online/twitterworth will bring you to a Twitter app that want's some all permissions to completely take over your account. So be aware and always use your brain :)

When M$ fails to RTFM

I hacked into a @Bing CMS that allowed me to alter search results and take over millions of @Office365 accounts. How did I do it? Well, it all started with a simple click in @Azure… 👀 This is the story of #BingBang 🧵⬇️ pic.twitter.com/9pydWvHhJs — Hillai Ben-Sasson (@hillai) March 29,

Cropping images should be easy

Cropping images should be easy

Let's begin with an AI written feature description of a modern image cropping function: 💡Crop images to remove any unwanted elements with precision and finesse. Utilizing my experience and expertise, I can craft your desired product from a photo with detailed accuracy. Crafting with care and attention-to-detail, no

IT Outsourcing it almost never works

That's my personal opinion, that I collected over almost two decades of all weird IT stories. The following story makes me also believe, that Microsoft choose a shady supplier ‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌for some support tasks. I can't believe it. My official Microsoft Store Windows 10 Pro key wouldn&

Good and cheap VPS'es

As a security guy, I like to explore the Internetz. Therefore, having a system with good connectivity and sufficient resources is key. Over the years I tested a lot.‌ For some of the short-living tasks, I just start an instance on AWS, Linode or DigitalOceans. All have their pros and

Welcome 2023 with lot's of memes

Welcome 2023 with lot's of memes

Hi guys, new year, worls is still collapsing. So, as this trend is going on and so much weird things are happening on a daily basis. I think it's time to spread some love/hate with more memes. Thankfully, https://github.com/jacebrowning provides a very feature-rich meme

/imagine prompt:hacker in cyberpunk style holding a commodore 64

/imagine prompt:hacker in cyberpunk style holding a commodore 64

Let's add some more doomsday atmosphere ☠️ ☢️ ☠️ There are several ways to make use of AI for your art skills :D Because I'm lazy, I just added the Midjourney Bot to my own Discord server. You can find it in the App Directory: Then it's

RFC3966: Parsing phone numbers is hard :D

Did you know you can hide your payloads in phone numbers? ☎️😱 RFC3966 specifies parameters for valid phone numbers that can contain characters. @securinti discovered that popular libraries are vulnerable and that it can lead to XSS and even ATO!🔥#BugBountyTips #NahamCon2022EU pic.twitter.com/tNUVyZu7Oz — INTIGRITI (@intigriti) December 17, 2022

Log4Shell one year later

They are pretty cozy! 😄 #log4shell #anniversary https://t.co/Uv7Ld7S0zu pic.twitter.com/F7r4UKxd7z — Alvaro Muñoz 🇺🇦 (@pwntester) December 14, 2022

Bookmarklet to extract all URLs from DOM

I've created a javascript bookmarklet that will extract all endpoints (starting with /) from your current DOM and from all the all the external script sources embedded on the page. You can find it here, if you want to try it out:https://t.co/1geip38VIh#bugbountytips pic.twitter.

ChatGPT for Hackers

ChatGPT for Hackers

Unleashing the Power of ChatGPT for Bug Bounty and Penetration Testing Credit: @cyph3r_asrhttps://t.co/HcFDcro9s8 #cybersecuritytips #infosec #ChatGPT #bugbountytips #hacking — 7h3h4ckv157 (@7h3h4ckv157) December 6, 2022 Very nice summary about all kind of security stuff, that people already used ChatGPT for. Unleashing the Power of ChatGPT for Bug Bounty

ASUS are the masters of failsafe code

Dear @ASUS , I guess this is not the right way 😅 #bugbounty pic.twitter.com/oVK6cxNcY6 — Akash Pawar ~ वीरा (@0xVeera) December 11, 2022 Let's think about that brilliant code behind ... otp = RANDOM_INT(6) user.session.otp = otp if sms.gateway.isAlive(): sms.gateway.send(user.number, otp)

Let's start some more regular blogging ...

I run this blog since 2015 and as you can see, I was able to publish two posts :-D Sooo, today I will start to ab(use) this place for my regular shitposts :)

Blaupunkt Smart Home Alarm Q3x00 vulns

Introduction As IoT is a huge topic nowadays and a lot of vulnerabilities have been found on that devices during the last months my team and I took a quick look at the IP based Smart Home Alarm system Q3000 of Blaupunkt. The system consists of a controller called ("

Advanced CSRF Attacks against Modems, Routers, Accesspoints and other internal network devices

Introduction In 2014 a lot of vulnerabilities were detected in SOHO devices. In addition to critical flaws, which allow unauthenticated attackers to execute arbitrary code, there are a mass of CSRF vulnerabilities which allow a remote attacker to change different settings within the vulnerable SOHO devices. There is also an