Open SIS files in your browser
The file a Symbian app came in, for Nokia's S60 phones and others. Open one right here to see what the app is, who signed it, what it asks for and every file it installs. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your app opens like a folder, its files listed on the left, with a page beside them on what it is, who signed it and what it asks for.
- Its signature • Checked inside your browser
- SHA-256 • Compare it or look it up on VirusTotal
- Heads-ups • What it asks for and what runs
- Its files • Manifests open as text
About SIS
Nokia's smartphones ran Symbian until about 2013, and their apps came as SIS files. A SIS names the app and its vendor, the app's UID and version, the phones it's for and the languages it speaks, then holds each file with the place it installs to, like a program in \sys\bin, packed with zlib.
Symbian 9, the S60 3rd Edition on, brought SISX: a controller of fields, signed with a certificate, that holds a SHA-1 of every file, and capabilities each program asks for, like reading your contacts or using the network. Phones from Symbian 9 on refuse an unsigned package, and only Symbian Signed could grant the stronger capabilities.
Filepeek reads both kinds. It shows the app, its vendor, UID, version, languages and target phones, each capability its programs ask for and who could grant it, checks the signature and every file's SHA-1, and lists the files where they install, each opening in its own viewer.
Symbian app installer
.sis • .sisx
Format
- MIME type
- application/vnd.symbian.install
- Made by
- Symbian
Inside the file
- Header
- Symbian UIDs, the third the app's own
- Controller
- What it is and where each file goes
- Files
- Each packed with zlib
- Signature
- Over the controller, from Symbian 9 on
Opens in every browser
Filepeek opens a SIS as a folder in Chrome, Edge, Firefox and Safari. On their own, browsers only download it.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Apps that open SIS
- WindowsNo app built in opens it • EKA2L1, a Symbian emulator, installs and runs it
- MacNo app built in opens it • EKA2L1, a Symbian emulator, installs and runs it
- iPhone and iPadNo app opens it • iPhones don't run Symbian apps
- AndroidNo app opens it • EKA2L1, a Symbian emulator, installs and runs it
Questions
How do I open a SIS file on a computer?
Drop it on this page or choose Peek a SIS. Its files are listed like a folder, with a page beside them on the app, its vendor, the phones it's for and the capabilities it asks for. Nothing installs.
What's the difference between SIS and SISX?
SISX is the format of Symbian 9 and later, signed and with capabilities, and is often named .sis too. The older SIS is for Symbian 6 to 8, like Nokia's S60 2nd Edition, and the phones that came after it don't install it. Filepeek opens both and says which one it is.
Why does my phone say a SIS certificate expired?
Symbian checks a package's certificate against the phone's date when it installs, and many certificates from Symbian Signed have long run out. Filepeek shows each certificate's dates on the signature's card.
Can I check a SIS file's signature?
Yes. Filepeek checks the signature over the controller and every file's SHA-1 against the one it holds. A self-signed package says so, and a package before Symbian 9 says it wasn't signed.
Can I get the files out of a SIS?
Yes. Pick any file on the left to open it: a text file as text, a picture in the image viewer. In Chrome and Edge on a computer, Export extracts them all into a folder.
Can I run a Symbian app?
Not in Filepeek, which only reads it: nothing in it runs. EKA2L1, a Symbian emulator for Windows, Mac, Linux and Android, installs and runs many SIS files.