SIS (.sis)
.sis file signature | application/vnd.symbian.install
Magic Bytes
Offset 8
10 00 04 19
Sources: Apache Tika
Extension
.sis
MIME Type
application/vnd.symbian.install
Byte Offset
8
Risk Level
Safe
Validation Code
How to validate .sis files in Python
def is_sis(file_path: str) -> bool:
"""Check if file is a valid SIS by magic bytes."""
signature = bytes([0x10, 0x00, 0x04, 0x19])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .sis files in Node.js
function isSIS(buffer: Buffer): boolean {
const signature = Buffer.from([0x10, 0x00, 0x04, 0x19]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .sis files in Go
func IsSIS(data []byte) bool {
signature := []byte{0x10, 0x00, 0x04, 0x19}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/sis
curl https://filesignature.org/api/v1/sis
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .sis file?
A .sis file is a SIS file.
What are the magic bytes for .sis files?
The magic bytes for SIS files are 10 00 04 19 at byte offset 8. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .sis file?
To validate a .sis file, read the first bytes of the file and compare them against the known magic bytes (10 00 04 19) at offset 8. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .sis files?
The primary MIME type for .sis files is application/vnd.symbian.install.
Is it safe to open .sis files?
SIS (.sis) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.