Tal Skverer

Tal Skverer

@taltechtreks.com

Security Researcher | Blog writer | Hacker | DEFCON speaker | Gamer | Silly stuff lover. https://taltechtreks.com/

3.5K followers102 following386 posts

Look what just landed in GitHub's changelog 👀 A well-needed change to how GitHub Actions constructs the sub claim in its OIDC tokens, making OIDC trust relationships more secure for organizations by embedding immutable identifiers in the claim.

This change follows a finding from last year by the amazing research team here at Astrix. This turned out to be a vulnerability with real, broad impact on organizations across the world, exploitable with zero prior access and public reconnaissance only.

וואו, איזה אווירה ואיזה קהל ב-Reversim Summit היום! שמחתי מאוד על הזכות להיות פה ולהציג בפניכם את המחקר שלי, תודה!

איזה כיף שהגיע הכנס השנתי של Reversim Summit! כנס שתמיד נהדר להיות בו עם הרצאות מעניינות ומעולות, והפעם הוא מתוק במיוחד כי יוצא לי להרצות בו בפעם הראשונה! מוזמנים לבוא לשמוע על איך נראה האקינג למשחקי אנדרואיד, ואיך ביליתי את ימי הקיץ אי שם ב2016 כדי לפרוץ לפוקימון גו. מחר, 27/10, ב13:20 באולם הגדול!

So happy the Reveresim Summit is here! It’s always such a great event with awesome talks. This year is extra special because I get to speak for the first time! Come hear about Android hacking, and how I spent summer 2016 breaking into Pokémon Go. Tomorrow, October 27th, at 13:20 in the main hall!

Had a great time presenting the OWASP Top 10 NHI Project today at #LASCON Austin with Tomer Yahalom! We've had the pleasure to give the talk to a great crowd and amazing people. Looking forward to the second day filled with interesting talks!

Our analysis discovered that the majority of servers rely on long-lived API keys or credentials given to them through static configuration files. This unfortunate side effect of the rush to use #AI #Agents comes at a cost by downgrading security.

Today, we released an open-source tool to help mitigate some of the security implications of today's #MCP server implementations: the "MCP Secret Wrapper", which in a simple 2-step flow, removes those pesky static credentials from your configuration files! github.com/astrix-secur...

github.comGitHub - astrix-security/mcp-secret-wrapper: Astrix Security MCP Secret WrapperAstrix Security MCP Secret Wrapper. Contribute to astrix-security/mcp-secret-wrapper development by creating an account on GitHub.

I am absolutely delighted to share that I'll be giving a talk at Reversim Summit 2025 on breaking Pokémon Go's anti-cheating mechanism! On a personal note, every time I visit Reversim, it shows me just how awesome, welcoming, and genuinely interesting community-driven events can be.

The first Reversim I attended was actually one of the first conferences I'd ever been to. I distinctly remember sitting in the audience, watching a speaker present their cool project, and thinking how incredible it must feel to be up there on stage sharing your work with such an engaged crowd.

A few years later (and I still can't quite believe this is happening) I'm going to be that person on stage! So, despite me, I'll be presenting my research on the main stage on the second day (Tuesday, 28/10) at 13:20. Hope to see you there!

Giving a talk on Pokemon Go, I just had to convert myself to a Pokemon trainer. The amazing Ryan Rockenbaugh surprised me with a limited edition sticker of Trainer Tal Sticker wall at #DEFCON got 2, and I will be giving what's left tomorrow at my talk Breaking 'Em All! 11:30 Track 3. See you!

Excited and humbled to speak once again in DEF CON. Talk is on Saturday at 11:30, track 3. I'll be in the conf till Sunday, hit me up if you want to chat over the talk or any other project.

I'm building something cute and new, but as opposed to my normal ways, this time I'm using #Cursor heavily and the flow blows my mind. Although I'm certain that without prior good knowledge of coding it wouldn't work that well.

Excited to present my research tomorrow at #RSAC! Come by to hear John and me share conclusions and insights on the first publicly available report on Non-Human identity security! See you there, May 1, 10:50 am at Moscone West 3004!

For today, a bit Friends content! Or, uhh, actually, computer science! What’s the largest sofa you can pivot around a corner? Heard about this problem in the past, but I thought it's one of those we will never be able to prove. (At least until quantum computers arrive to solve some NP problems)

quantamagazine.orgThe Largest Sofa You Can Move Around a Corner | Quanta MagazineA new proof reveals the answer to the decades-old “moving sofa” problem. It highlights how even the simplest optimization problems can have counterintuitive answers.

Took a bit of hiatus from posting here, was quite busy the past few months (CFP season amiright…) But I do have more cool stuff ready for sharing as well as writing 2 blog posts about projects I worked on lately. Looking forward to sharing with you all

A cute post showcasing the basis of every website - HTML! The site goes over (almost) all HTML tags, by using them. Seeing this, it’s unfortunate that text inputs in websites don't allow most tags but rather encapsulate how the final result is displayed for users. Give us more, please!

iamwillwang.comEvery HTML Element

Managed to squeeze in 2 talk submissions to #fwd:cloudsec just before the first round CFP closes. Hoping for good news, will be the perfect reason to finally attend in person!

#OAuth #phishing apps are coming to get you - now on #X! It's annoying to see yet another case of how easy it is to fake consent screens that look identical to real companies. Why we still lack mandatory verification processes for new OAuth apps is beyond me. x.com/thealexbanks...

#OIDC identity providers in #AWS have been getting more attention lately and rightfully so: It’s unfortunately surprisingly easy (and common) to create misconfiguration within the necessary conditions on OIDC-based #IAM roles trust policy.

offensai.comRogueOIDC: AWS Persistence and Evasion through attacker-controlled OIDC Identity ProviderThis research shows what an attacker can achieve after creating a malicious OIDC identity provider in AWS and how they can do it. The article presents novel techniques and tools for persistence and ev...

This researcher found a clever persistence trick: create a rogue #OIDC provider mimicking an existing one, then silently tweak the conditions. Easy to miss, but it lets an attacker retain access to a compromised account. How many orgs actually audit their OIDC roles? Feels like a blind spot.

So, #OAuth implementations seem to always have some edge case or quirk making it vulnerable in odd ways. This particular exploit leveraged an open redirect in an app's OAuth callback, combined with #Google OAuth's quirks to steal authorization codes on visiting a malicious website.

blog.voorivex.teamOAuth Non-Happy Path to ATOLearn how small errors in OAuth implementation can lead to significant security vulnerabilities like one-click account takeover in web applications

I love #hacking #embedded systems, and also #gaming when time permits. Imagine my delight seeing a post that blends both! Two decades after its release, someone revisits the idea of “just” using the original #Xbox CPU's #JTAG connector to debug it.

blog.ret2.ioJTAG 'Hacking' the Original Xbox in 2023Released in November 2001, the original Xbox was Microsoft’s first venture into the game console industry. With its hardware closely resembling a cheap but v...

Of course, it can't that simple. #Microsoft took a straightforward but effective countermeasure—grounding the #TRST pin, effectively locking out #JTAG access on retail consoles. Additionally, the #CPU is soldered on a ball-grid-array, making direct patching nearly impossible. But - there’s a way!

The author created a CPU #JTAG breakout and by inserting it between the balls and the CPU—manages to successfully debug the Xbox and extract the holy grail—a secret 512-byte boot ROM. This ROM was originally extracted in other methods which allowed #Jailbreaking the #Xbox in the first place.

The Dead Internet Theory is just a meme, right? Well…something strange happens over at PhysicsForums. Once an active forum for physics students, now a quieter place. A year ago, posts appeared, made by users long after their last login. LLM-generated replies back-inserted into the DB Must read!

hallofdreams.orgPhysicsForums and the Dead Internet TheoryAn exposé no one will read, about the widespread falsification of user posts in PhysicsForums, a scientific community founded in 2001. This is a microcosm of the death of the human-written Internet.

Over time, defenses evolved: #CSRF protections, X-Frame-Options to prevent framing, and SameSite: Lax cookies to block cross-site authentication made clickjacking obsolete. But guess what? It’s back — #DoubleClickjacking bypasses these defenses #exploiting how #browsers handle mouse events. 2/3

Using the technique on a newly opened window, the first click closes it, underneath is an #authorization button that the second click presses, approving access for a #malicious app. Pretty clever—and hopefully, defenses catch up before this trick gets widely abused. 3/3