{"success":true,"data":{"ext":"nbu","name":"Nokia phone backup file","description":"The NBU (Nokia phone backup) format is a proprietary backup file format developed by Nokia for its mobile devices. It was used by Nokia PC Suite and related software to store contacts, messages, calendar data, settings, and other handset content for restoration or migration. The format is largely legacy, reflecting older Nokia platforms, and backup files are generally safe but should still be obtained from trusted sources before opening.","mime":[],"risk_level":"Safe","signatures":[{"hex":"CC 52 33 FC E9 2C 18 48 AF E3 36 30 1A 39 40 06","offset":0,"sources":[{"name":"Gary Kessler","url":"https://www.garykessler.net/library/file_sigs_GCK_latest.html"}]}],"related":[],"usage":{"python":"def is_nbu(file_path: str) -> bool:\n    \"\"\"Check if file is a valid NBU by magic bytes.\"\"\"\n    signature = bytes([0xCC, 0x52, 0x33, 0xFC, 0xE9, 0x2C, 0x18, 0x48, 0xAF, 0xE3, 0x36, 0x30, 0x1A, 0x39, 0x40, 0x06])\n    with open(file_path, \"rb\") as f:\n        return f.read(16) == signature","node":"function isNBU(buffer: Buffer): boolean {\n  const signature = Buffer.from([0xCC, 0x52, 0x33, 0xFC, 0xE9, 0x2C, 0x18, 0x48, 0xAF, 0xE3, 0x36, 0x30, 0x1A, 0x39, 0x40, 0x06]);\n  return buffer.subarray(0, 16).equals(signature);\n}","go":"func IsNBU(data []byte) bool {\n    signature := []byte{0xCC, 0x52, 0x33, 0xFC, 0xE9, 0x2C, 0x18, 0x48, 0xAF, 0xE3, 0x36, 0x30, 0x1A, 0x39, 0x40, 0x06}\n    if len(data) < 16 {\n        return false\n    }\n    return bytes.Equal(data[:16], signature)\n}"}}}