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.
- Open-Source Space
- Silicon Mechanics Gives Back
- Numerical Python
- Reglue: Opening Up the World to Deserving Kids, One Linux Computer at a Time
- New Storage Solution is Music to the Ears of Fast-Growing Digital Music Company
- Download "Linux Management with Red Hat Satellite: Measuring Business Impact and ROI"
- Linux Systems Administrator
- Senior Perl Developer
- Technical Support Rep
- UX Designer