{"success":true,"data":{"ext":"ast","name":"Need for Speed: Underground Audio file","description":"Need for Speed: Underground Audio (AST) is a proprietary audio file format used by Electronic Arts in Need for Speed: Underground and related game assets. It stores music, dialogue, and sound effects for playback within the game, and is typically handled by game installers, editors, or extraction tools. As a legacy game-specific format, it is generally safe, though unsupported files should be opened only with trusted tools.","mime":[],"risk_level":"Safe","signatures":[{"hex":"53 43 48 6C","offset":0,"sources":[{"name":"Gary Kessler","url":"https://www.garykessler.net/library/file_sigs_GCK_latest.html"}]}],"related":[],"usage":{"python":"def is_ast(file_path: str) -> bool:\n    \"\"\"Check if file is a valid AST by magic bytes.\"\"\"\n    signature = bytes([0x53, 0x43, 0x48, 0x6C])\n    with open(file_path, \"rb\") as f:\n        return f.read(4) == signature","node":"function isAST(buffer: Buffer): boolean {\n  const signature = Buffer.from([0x53, 0x43, 0x48, 0x6C]);\n  return buffer.subarray(0, 4).equals(signature);\n}","go":"func IsAST(data []byte) bool {\n    signature := []byte{0x53, 0x43, 0x48, 0x6C}\n    if len(data) < 4 {\n        return false\n    }\n    return bytes.Equal(data[:4], signature)\n}"}}}