Windows 10: How to sign these custom proprietary file formats using Microsft signtool?

We are having few legacy proprietary fileslike.fsm etc., which are encrypted and decrypted based on the proprietary company standard algorithms. So how to sign these custom proprietary file formats using Microsft signtool?

:)

 

0x800700C1 in SignTool

hi

i hvae made a 32 bit game but im having trouble signing the sertificate off the .appx file

this is the error that i get

C:\Program Files (x86)\Windows Kits\10\bin\10.0.17134.0\x86>SignTool sign /fd SHA256 /a /f signingCertx.pfx C:\projectx\snake\PackageFiles\snake.appx

Done Adding Additional Store

SignTool Error: SignedCode::Sign returned error: 0x800700C1

For more information, please see https://aka.ms/badexeformat

SignTool Error: An error occurred while attempting to sign: C:\projectx\snake\PackageFiles\snake.appx

i have used desktop app converter to make the EXE into an APPX

i have done all the steps that has brought me to this code:

SignTool sign /fd SHA256 /a /f signingCertx.pfx C:\projectx\snake\PackageFiles\snake.appx

but im stuck coz all i get is the error mentioned above after i type the code below :

SignTool sign /fd SHA256 /a /f signingCertx.pfx C:\projectx\snake\PackageFiles\snake.appx

my certificate has no password so i didnt include the /p

can you help me please

it would be much apritiated

i run windows pro

i have the windows SDK installed

also i have visual studio 7 that makes it easier

thank you

 

How to sign ISO files ?

I tried to sign the iso file by following the instructions given in the link. Still I'm getting the error.

Error:

SignTool Error: This file format cannot be signed because it is not recognized.

SignTool Error: An error occurred while attempting to sign: 'C:\signing\myiso.iso'

Does SignTool really supports signing ISO file types?

If yes, Can you please share the documentation where ISO file types are signed?

 

How to sign ISO files ?

I tried to sign the iso file using Signtool.exe. But I got an error, see below.

Command:

signtool sign /f "C:\signing\Digicertificate.pfx" /p mycertpassword /fd SHA256 /t timestampurl 'C:\signing\myiso.iso'

output:

Done Adding Additional Store

SignTool Error: This file format cannot be signed because it is not recognized.

SignTool Error: An error occurred while attempting to sign: 'C:\signing\myiso.iso'



Please correct me where I have done wrong.