NES
application/x-nesrom
Magic Bytes
Offset: 0
4E 45 53 1A
The NES file format, specifically the iNES standard, was developed by Marat Fayzullin to encapsulate game data and hardware mapping information for the Nintendo Entertainment System. It is primarily used for preserving software from the original 8-bit console for use in digital emulators and modern hardware clones. Although the format is legacy and poses minimal security risk, users should verify files to avoid corrupted data or potential vulnerabilities within specific emulator implementations.
Validation Code
How to validate .nes files in Python
Python
def is_nes(file_path: str) -> bool:
"""Check if file is a valid NES by magic bytes."""
signature = bytes([0x4E, 0x45, 0x53, 0x1A])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .nes files in Node.js
Node.js
function isNES(buffer: Buffer): boolean {
const signature = Buffer.from([0x4E, 0x45, 0x53, 0x1A]);
return buffer.subarray(0, 4).equals(signature);
}
Go
func IsNES(data []byte) bool {
signature := []byte{0x4E, 0x45, 0x53, 0x1A}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
GET
/api/v1/nes
curl https://filesignature.org/api/v1/nes