Security Research & CTF
Advanced exploits and vulnerability research. Practical walkthroughs for cybersecurity professionals and CTF players.
Predictable Quantum Randomness Explained: When Your Device-Independent Beacon Is Just a Fancy Hash Function
A cold wallet swears its private key came from an unbreakable quantum experiment. The experiment turns out to be pure math running on a public seed. Here is how that works, why it still fails the Bell test in practice, and how to stop treating deterministic code as physics.
PRNG Stream Reuse Explained: When Randomness Repeats Itself
A random-looking validation flow can collapse when two code paths consume the same PRNG stream. Add an empty-iterator check and silently ignored values, and the whole thing starts behaving less like security and more like a vending machine that gives refunds.
Client-Side Password Validation Explained: When Your Password Checker Builds Its Own Tiny CPU
A password checker can look wonderfully complicated, decrypt code at runtime, and even run a custom virtual machine. That still does not make the secret unbreakable. Here is how to pull the VM apart, recover its instructions, and reverse the final checks.
Encrypted C2 Loader Explained: Correlating PCAP, Memory, and a Hidden Stage
This challenge started with exactly two artifacts: `capture.pcapng` and `DbgInfo.DMP`. From there, the investigation moved through C2 decryption, screenshot and binary recovery, and reverse engineering of a loader that hid an encrypted in-memory stage.
Insecure OPC-UA Write Access Explained: When the Safety Interlock Is Just a Boolean
OPC-UA is supposed to be the grown-up industrial protocol. Hand it a self-signed certificate and a writable safety node, and it becomes a remote kill switch. Here is how that happens and how to stop it.
RF Protocol Reverse Engineering Explained: When the Airwaves Leak the Keys
A proprietary wireless security protocol looked solid on paper. Then someone opened the packets, fixed the CRC, and discovered that self-addressed commands plus one wrong transmission parameter were all that stood between locked sensors and open doors.
Flutter App Reverse Engineering Explained: When the Crypto Is Just Fancy Wrapping Paper
A full walkthrough of pulling a Flutter banking app apart, recovering its custom RSA+AES API protocol from the Dart AOT snapshot, and talking to the backend like the real client. Spoiler: encrypting the wire does not mean the server checks who owns the account.
PHP Extension Heap Overflow Explained: When Metadata Owns the Allocator
A custom PHP extension that parses image metadata with a fixed-size buffer and classic strcpy can hand the entire process to an attacker. Pair it with a loose file reader and you get ASLR bypass plus reliable RCE.
UPnP Command Injection Explained: When Your Gateway Trusts the Network Too Much
UPnP was supposed to make devices play nice automatically. Instead it often hands attackers a SOAP endpoint, a password, and a shell. Here's how a diagnostic service turns into remote code execution.
Insecure Deserialization Explained: When Your Data Comes Back to Bite You
A deep dive into insecure deserialization vulnerabilities, from Java gadgets to PHP object injection. Learn how attackers weaponize your own data formats, real breaches that made headlines, vulnerable examples, exploitation chains, and rock‑solid defenses. With jokes. Of course.
Broken Authentication Explained: When Logins Leak Like a Sieve
An exhaustive, witty walkthrough of authentication failures: weak passwords, flawed reset flows, session fixation, MFA bypass, and more. Learn from real breaches, vulnerable code samples, and defense checklists that'll harden your login system without hurting UX.
Path Traversal Explained: The Art of Escaping the Filesystem Prison
A massively detailed, story-driven deep dive into Path Traversal vulnerabilities. From classic ../ tricks to modern cloud, container, zip slip, and symlink abuse. Real-world breaches, vulnerable code in every major language, advanced exploitation chains, and defense strategies that actually work.
How to Hack an Iranian Nuclear Plant (A Lazy Hacker's Guide)
The satirical step-by-step guide nobody asked for, followed by the absolutely wild true story of Stuxnet - the cyber weapon that physically destroyed centrifuges while making the world rethink everything about security. Spoiler: It involves USB sticks, zero-days, and a whole lot of 'wait, that actually worked?!'
Command Injection Explained: When Your Server Becomes the Attacker's Terminal
A massively detailed, entertaining deep dive into Command Injection (OS Command Injection). We're covering every injection variant, real-world breaches that rocked the industry, vulnerable code examples in multiple languages, exploitation techniques from basic to advanced, and rock-solid defense strategies. Plus plenty of humor because system shells don't have to be terrifying... okay, they do.
SQL Injection Explained: The Bobby Tables Hall of Fame
A massively detailed, entertaining deep dive into SQL Injection attacks. We're covering every injection type, real-world breaches that shook the industry, vulnerable code in multiple languages, exploitation techniques from basic to advanced, and bulletproof defense strategies. Plus plenty of jokes because SQL doesn't have to be boring!
CSRF Explained: The Art of Making Users Do Your Bidding Without Their Knowledge
The ultimate deep dive into Cross-Site Request Forgery (CSRF). We're covering the mechanics, attack vectors, real-world breach case studies, exploitation techniques, vulnerable code examples across multiple languages, advanced bypasses, and a comprehensive defense strategy. From basic concepts to advanced mitigation, everything you need to protect your applications.
XSS Explained: When Your Website Becomes a Puppet Show
A ridiculously detailed, humor-filled deep dive into Cross-Site Scripting (XSS). We're talking every flavor of XSS, vulnerable code in all your favorite languages, real-world breaches that made headlines, exploitation techniques, and comprehensive mitigation strategies. Buckle up for a wild ride through the world of malicious scripts!
OWASP Top 10: The Wild World of Web App Security Risks!
Buckle up for a super-detailed, hilarious deep dive into the OWASP Top 10. We're talking explanations that go on forever, code snippets that actually make sense, real-world horror stories, and enough mitigation tips to make your head spin. Oh, and some dad jokes because why not?