Paranoid Penguin - Limitations of shc, a Shell Encryption Utility
An approach to extract the shell source code successfully from shc version 3.7 generated binary executable was demonstrated. The pub.sh script was used for illustrative purposes only. I have indeed tested the deshc program on executables that I did not create and without access to the source code or the original shell script.
Francisco García, the author of shc, recently released version 3.8. It uses somewhat different data structures and improves upon the security of the previous version. Nevertheless, I believe that embedding the encryption password within the binary executable is dangerous and prone to extraction as discussed in this article.
Nalneesh Gaur, CISSP, ISAAP, works at Diamond Cluster International as a BS7799 Lead Auditor.
Webinar: 8 Signs You’re Beyond Cron
11am CDT, April 29th
Join Linux Journal and Pat Cameron, Director of Automation Technology at HelpSystems, as they discuss the eight primary advantages of moving beyond cron job scheduling. In this webinar, you’ll learn about integrating cron with an enterprise scheduler.Join us!
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- Not So Dynamic Updates
- April 2015 Video Preview
- Users, Permissions and Multitenant Sites
- New Products
- Flexible Access Control with Squid Proxy
- Security in Three Ds: Detect, Decide and Deny
- DevOps: Everything You Need to Know
- Tighten Up SSH
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