Shell script to sign a .NET assembly.

signextlib.bat

@echo off

"C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\sn.exe" -q -vf "%1" > NUL
if ERRORLEVEL 1 goto NOT_SIGNED

:SIGNED
echo Already signed: %~nx1
goto END

:NOT_SIGNED
echo Signing %~nx1...
"C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\ildasm.exe" /out="%~dpn1.il" "%1"
if ERRORLEVEL 1 goto FAILED
if EXIST "%~dpn1.res" (
    "%WINDIR%\Microsoft.NET\Framework\v4.0.30319\ilasm.exe" /dll /key="%2" /resource="%~dpn1.res" "%~dpn1.il" 
) else (
    "%WINDIR%\Microsoft.NET\Framework\v4.0.30319\ilasm.exe" /dll /key="%2" "%~dpn1.il" 
)
if ERRORLEVEL 1 goto FAILED

rem Verify...
"C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\sn.exe" -q -vf "%1" > NUL
if ERRORLEVEL 1 goto FAILED

echo "Successfully signed."
goto END

:FAILED
echo Failed to sign %~nx1

:END