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All 🌐 Web 💥 Pwn 🔐 Crypto 🔍 Forensics ⚙️ Reversing 🎯 Misc
Reversing
100 XP

LockBit

★★☆☆☆ Easy

Inspired by obfuscation techniques used in the LockBit ransomware family, this challenge implements a multi-layer...

Reverse Engineering Linux Binary Analysis
Reversing
150 XP

Phantom

★★★☆☆ Moderate

Inspired by encryption techniques used in the Phantom malware family, this challenge implements a cipher algorithm to...

Reverse Engineering Linux Binary Analysis
Reversing
150 XP

Vidar

★★★☆☆ Moderate

Inspired by encryption techniques used in the Vidar malware family, this challenge implements a cipher algorithm to...

Reverse Engineering Linux Binary Analysis
Reversing
200 XP

Vice Auth

★★★★☆ Hard

Inspired by authentication mechanisms in modern malware, this challenge implements a cipher-based proof-of-work system....

Reverse Engineering Linux Binary Analysis
Crypto
200 XP

Malware Style Obfuscation

★★★★☆ Hard

Final boss. Modeled after real IoT malware like Mozi. Ciphertext:

Crypto
150 XP

Matryoshka Payload

★★★☆☆ Moderate

Like Russian nesting dolls, each layer reveals another. Ciphertext:

Crypto
150 XP

Loader Chain

★★★☆☆ Moderate

Inspired by real IoT botnet droppers (Mirai, Gafgyt). Ciphertext:

Crypto
100 XP

Escape Mania

★★☆☆☆ Easy

Some WAFs can be bypassed by encoding payloads multiple times. Ciphertext:

Crypto
150 XP

High Base

★★★☆☆ Moderate

Base64 is mainstream. Base85 offers higher density encoding. Ciphertext: