Skip to content
Z3tra

Write-ups

How I solved it

Full reasoning, not solve logs. If a dead end taught me something, it stays in — that is where the learning actually is.

2 entries

4 minmedium

From a blind SQL injection to a shell, one bit at a time

Personal lab

A lab walkthrough: finding a boolean-blind injection with no visible output, turning it into data exfiltration, then into file write, then into code execution.

  • Write-ups
  • Web Security
  • SQL Injection
3 mineasy

The JWT that trusted its own header

Personal lab

A lab write-up on an authentication bypass through JWT algorithm confusion — the classic 'alg: none' and its slightly less obvious RS256-to-HS256 cousin.

  • Write-ups
  • Web Security
  • Authentication
  • CTF