0x1622's Blog

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Hey, I'm 0x1622

I'm a Student, interested in cybersecurity and research and want to build useful things for the web. Currently, I'm focused on learning in depth about reverse enginering and binary exploitation. This is my corner of the web where i write mostly ctf blogs or some projects or about some apps i have analyzed.

2025

Analysis of Wedding Invitation Application

Deep dive into a malicious Android RAT using dropper technique and C2 communication

0x1622

August 28, 2025

Analysis Android Malware RAT

A comprehensive analysis of a malicious Wedding Invitation Android application that uses advanced obfuscation, dropper technique, and C2 communication to steal user data and remotely control devices.
Payatu IoT Master Challenge

IoT device exploitation and firmware analysis

0x1622

June 30, 2025

CTF IoT Hardware

A comprehensive walkthrough of the Payatu IoT Master challenge, exploring firmware analysis, hardware exploitation, and IoT security vulnerabilities.
PLAID CTF 2025

Solving the Prospectin Challenge with Z3 SMT Solver

0x1622

June 10, 2025

CTF Binary Reverse

A detailed walkthrough of the Fool's Gulch challenge from PLAID CTF 2025, using Z3 SMT Solver to satisfy 400 conditions and extract the flag.
BSidesSF - Soothsayer

Cool challenge involving Mersenne Twister (MT) for generating pseudo-random numbers

0x1622

May 15, 2025

CTF Crypto

A walkthrough of the Soothsayer challenge from BSidesSF CTF, involving Mersenne Twister (MT) for generating pseudo-random numbers.
Nullcon CTF 2025

Solving reverse engineering and web challenges

0x1622

March 20, 2025

CTF Crypto

Writeup of the most interesting challenges from Nullcon CTF 2025, with a focus on reverse engineering.
PearlCTF Mobile App Reverse Engineering

Cracking the mobile application challenge

0x1622

February 10, 2025

CTF Mobile Reverse

A detailed walkthrough of reverse engineering an Android application for the PearlCTF mobile challenge, extracting hidden flags using simple logic.
Repello AI Challenge

Solving the multi-level AI security challenge

0x1622

January 15, 2025

CTF AI Security

A step-by-step solution guide for the Repello AI security challenge, featuring multiple levels of increasing difficulty that test your AI security knowledge.

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