@cyber_ghost

VERIFIED RESEARCHER

Web & Crypto CTF player | Top 10 DEF CON CTF 32 Quals | Security Architect

Member since Nov 4, 2026GitHub

Published2

CTF Solves8

Published Walkthroughs (2)

WEBmedium

Google CTF '24

Bypassing WAF & Next.js SSR Cache Poisoning with Custom Deserialization

Reverse proxy header uncloaking combined with Next.js ISR (Incremental Static Regeneration) key poisoning to execute stored XSS on administrative dashboards.

@cyber_ghost

5.1k6m

CRYPTOhard

DEF CON 32 Quals '24

Lattice Attack on Broken ECDSA Nonces with LLL Reduction

Recovering the private key from 80 ECDSA signatures with 8 bits of nonce bias using Hidden Number Problem formulation and SageMath LLL reduction.

@cyber_ghost

3.9k9m