RatCTF
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Vault PKI

🧩 Cryptovault

🖧 AD Network — Cryptovault

Vault Keygen Vault Session Vault Verify Vault Encrypt Vault PKI

512-bit RSA public key served at /pubkey. Factor the modulus using msieve or yafu (feasible under a minute for 512-bit), reconstruct the private key, and decrypt the /challenge ciphertext for SSH credentials. World-writable cron gives root.

🩸 First user blood: 00x003 🩸 First root blood: 00x003
Internal machine — reachable only by pivoting from the entry host. It is not directly scannable from the internet, so external scans return filtered. This is by design, not an outage.
Target IP Log in to reveal
User Flag Pending
Root Flag Pending

Community

Community Hints

Grade A · 1000 pts Grade B · 700 pts Grade C · 400 pts Grade D · 200 pts + 150 credits on accept

Short, stage-specific nudges — directional, spoiler-light, no exact commands.

No community hints yet — be the first to add one!

Community

Community Walkthroughs

Grade A · 2500 pts Grade B · 1750 pts Grade C · 1000 pts Grade D · 500 pts + 300 credits on accept

🔒 Community walkthroughs are spoilers — capture the root flag on this machine to unlock them.