OpenSSL-based signcode utility is used for Authenticode signing of EXE/CAB files. It also supports timestamping.
You can download it from the following link: https://packetstormsecurity.com/files/download/120764/osslsigncode-1.5.1.tar.gz
Source: https://packetstormsecurity.com/files/120764/OpenSSL-Based-Signcode-Utility-1.5.1.html