Episode 130: Minecraft Hacks to Google Hacking Star - Valentino
Critical Thinking - Bug Bounty Podcast10 Heinä 2025

Episode 130: Minecraft Hacks to Google Hacking Star - Valentino

Episode 130: In this episode of Critical Thinking - Bug Bounty Podcast Justin is joined by Valentino, who shares his journey from hacking Minecraft to becoming a Google hunter. He talks us through several bugs, including an HTML Sanitizer bypass and .NET deserialization, and highlights the hyper creative approaches he tends to employ.

Follow us on twitter at: https://x.com/ctbbpodcast

Got any ideas and suggestions? Feel free to send us any feedback here: info@criticalthinkingpodcast.io

Shoutout to YTCracker for the awesome intro music!

====== Links ======

Follow your hosts Rhynorater and Rez0 on Twitter:

https://x.com/Rhynorater

https://x.com/rez0__

====== Ways to Support CTBBPodcast ======

Hop on the CTBB Discord at https://ctbb.show/discord!

We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.

You can also find some hacker swag at https://ctbb.show/merch!

Today's Sponsor: ThreatLocker - Patch Management

https://www.criticalthinkingpodcast.io/TL-patch-management

Today’s Guest: Valentino - https://blog.3133700.xyz/

====== Resources ======

JMX Manager

Stored XSS in reclamos

Command Injection in Vertex AI

whitepaper-net-deser.pdf

free-after-use.go

A Journey Into Finding Vulnerabilities in the PMB Library Management System

emulated-register_globals.php

====== Timestamps ======

(00:00:00) Introduction

(00:02:38) JMXProxy Bug Story

(00:09:46) Intro to Valentino

(00:29:08) HTML Sanitizer bypass on MercadoLibre

(00:37:16) Command injection in Vertex AI

(00:44:10) .NET deserialization, & Argument injection to LFR, & Free after use

(00:51:33) Luck, creativity, and evolution as Hacker

(00:59:31) Issues in file extension validation components, Emulated register_globals, & AI Hacking

Jaksot(161)

Episode 33: The Master of Hacker Show&Tell: Inti De Ceukelaire

Episode 33: The Master of Hacker Show&Tell: Inti De Ceukelaire

Episode 33: In this episode of Critical Thinking - Bug Bounty Podcast, we welcome Inti De Ceukelaire, a seasoned bug hunter known for his creative storytelling and impactful show-and-tell bugs…and let...

24 Elo 20231h 22min

Episode 32: The Great Write-up Low-down

Episode 32: The Great Write-up Low-down

Episode 32: In this episode of Critical Thinking - Bug Bounty Podcast, Joel caught a nasty bug (no, not that kind) so Justin is flying solo, and catches us up to speed on what's been happening in hack...

17 Elo 20231h 1min

Episode 31: Alex Chapman - The Man of Many Crits

Episode 31: Alex Chapman - The Man of Many Crits

Episode 31: In this episode of Critical Thinking - Bug Bounty Podcast, we're thrilled to be joined by Alex Chapman, a seasoned InfoSec hacker and bug bounty hunter. We kick off with Alex sharing his h...

10 Elo 20231h 24min

Episode 30: Recon Legend Shubs - From Burgers to Bounties

Episode 30: Recon Legend Shubs - From Burgers to Bounties

Episode 30: In this episode of Critical Thinking - Bug Bounty Podcast, we're thrilled to be joined by renowned bug bounty hunter Shubs. We kick off with him sharing his journey from burgers to bugs, a...

3 Elo 20231h 19min

Episode 29: Live Episode with Sean Yeoh - Assetnote Engineer

Episode 29: Live Episode with Sean Yeoh - Assetnote Engineer

Episode 29: In this episode of Critical Thinking - Bug Bounty Podcast sit down with Assetnote Engineer Sean Yeoh, and pick his brain about what he's learned on his development journey. We talk about t...

27 Heinä 202359min

Episode 28: Surfin' with CSRFs

Episode 28: Surfin' with CSRFs

Episode 28: In this episode of Critical Thinking - Bug Bounty Podcast, the CSRF’s up, dude! We kick off with a debate about whether or not deep link vulns in mobile apps can be considered CSRF. We als...

20 Heinä 20231h 18min

Episode 27: Top 7 Esoteric Web Vulnerabilities

Episode 27: Top 7 Esoteric Web Vulnerabilities

Episode 27: In this episode of Critical Thinking - Bug Bounty Podcast, we've switched places and now Joel is home while Justin is on the move. We break down seven esoteric web vulnerabilities, and tal...

13 Heinä 20231h 20min

Episode 26: Client-side Quirks & Browser Hacks

Episode 26: Client-side Quirks & Browser Hacks

In this episode of Critical Thinking - Bug Bounty Podcast, we're back with Joel, fresh (haha) off of back-to-back live hack events in London and Seoul. We compare the different vibes of each LHE, then...

6 Heinä 20231h 33min