Challenges involving satellite uplinks and downlinks, orbital tracking, signal forensics, binary reverse engineering, and attacker command-and-control traffic.
| # | Challenge | Points | Flag |
|---|---|---|---|
| 1 | 201-uplink-origins | 50 | GAIANSPACE{26.46,-98.64,3296.64} |
| 2 | 202-downlink-deception | 75 | GAIANSPACE{VELA,2025-06-12T19:15:00Z} |
| 3 | 203-signal-secrets | 100 | GAIANSPACE{tw0_l4yer_d0wnlink} |
| 4 | 204-payload-unleashed | 100 | GAIANSPACE{b4ckd00r_in_the_dec0der} |
| 5 | 205-backdoor-from-space | 125 | GAIANSPACE{c2_rc4_from_the_nonce} |
| 6 | 206-gpredict-secret | 50 | GAIANSPACE{w4tcher_0f_the_sky} |
| 7 | 207-lost-signal-mars | 75 | GAIANSPACE{diff_enc0ded_and_buried} |