HTB - Reversing: vvm

Challenge Summary

  • Name: vvm
  • Category: Reversing
  • Difficulty: Hard
  • Solved by: Shinkiro
  • Goal: Recover the password accepted by the embedded custom VM.
 

Zero

CTF notes by Zero

Reversing a custom VM verifier by recovering opcode behavior, unpacking byte-index shuffles, and inverting rotate-based checks to reconstruct the 32-byte password.

2026-03-05

Tags

#ctf #htb #rev