A clear hint that the program asks for a key (likely a password) and prints the flag if it’s correct.
The challenge can be broken down into three main stages: kick31.zip
While kick31.zip often appears on "abandonware" or ROM sites, these files are still under active copyright. To avoid legal risks and ensure a clean, uncorrupted file, users typically use these official channels: Installing Kickstart 3.1.4 in an Amiga 1200 A clear hint that the program asks for
| Step | Command / Action | Result | |------|------------------|--------| | 1️⃣ | zip2john kick31.zip > hash | Extract ZIP hash | | 2️⃣ | john --wordlist=rockyou.txt hash | Password = t0pS3cr3t! | | 3️⃣ | unzip -P t0pS3cr3t! kick31.zip | Extract kick31.bin | | 4️⃣ | strings -a kick31.bin | Locate prompts | | 5️⃣ | Open in Ghidra → locate check_key | MD5‑based validation | | 6️⃣ | Brute‑force MD5 → key = 4c1ck3r! | Recover expected key | | 7️⃣ | Run binary with key | Flag printed: FLAGz1p_c0mpre55ion_4w3s0m3 | | | 3️⃣ | unzip -P t0pS3cr3t