Hacking
is the finest art.
CTF challenges Write-ups, vulnerability research, and offensive security techniques. All write-ups include full methodology, not just the flag.
Recent Write-ups
View all →RedTrails
Analyzing a multi-stage attack through Redis exploitation, reverse shell deployment and AES-256-CBC decryption.
Rebuilding
Snakecode
Extracting layered Python bytecode obfuscation through base64 decoding, zlib decompression, and marshal deserialization.
Rebuilding
Reversing an ELF binary to recover a hidden XOR-encrypted password.
Find The Easy Pass
Using Wine and GDB to dynamically recover the password from a Windows executable.
UTCN Cyber Security Seminars
2026 UTCN Google Cyber Security Seminars competition challenges write-ups
MBCoin
Analysis of a malicious Word document and PCAP revealing a multi-stage VBA, PowerShell, and XOR-decrypted DLL attack chain.
Silentium
Exploiting Flowise and Gogs vulnerabilities.
Sp00ky Theme
Analyzing a malicious KDE Plasma theme that hides a backdoor inside a widget.
shigehira
HTTP traffic analysis to extract malware downloads, user agents, and network indicators of compromise.
bdlp
A simple discrete logarithm challenge with a weak 16-bit prime
timeout
A Python regex challenge involving ReDoS and a signal-based timeout leak