hxp2020 CTF - “EXCELlent”
Today we will be reversing a serial number validator written in EXCEL logic. First steps We receive an XLSX file and opening it in EXCEL...
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Sep 22, 20226 min read
Hacklu 2019 Qualifiers - Yield 🚩
The challenge is an HTML file called index.html, which contains obfuscated and minified Javascript. When browsing the page we receive 34...
Sep 20, 20224 min read
HackLu 2019 Qualifiers - Futuristic communications
Communication in the future is a big thing. With the rising amount of data in the internet new handshake techniques are required. Here is...
Sep 20, 20222 min read
HackTM 2020 Qualifiers - Count on Me 🚩
Description: There is no description for the challenge. The zip file includes three resources: challenge.txt – gives us the encryption...
Sep 20, 20224 min read
HackTM 2020 Qualifiers - HackDex
The challenge starts by having 2 files: – hackdex, ELF file. – hacktm.hdex, text file. Description Considering your possible trip to...
Sep 20, 20225 min read
HackTM 2020 Qualifier - Plop 🚩
PLOP is a reversing task composed of a single x64 ELF executable. By Inspecting main we find that it: Copies the program’s input into a...
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