Dear Sir or Madam,
I have experience in dynamic website designs, development of grey-hacking and pentesters tools. I would thank you for the opportunity of resolving your website’s issues.
The process that I am going to take is the following:
1 - Download and backup all your data including files and databases.
2 - Download and copy your complete website (again).
3 - Offline inspection of website; sophisticated malware (php shell consoles and so on) detection, e.g., php injections.
4 - Detection of your personalized OpenCart modifications w.r.t. the open source code.
5 - Comparison of your OpenCart version with the latest released version as well as installation of patches. Determination and report of incompatibilities of your personalized code with the latest released version.
6 - Upload the new code.
7 - Revision with the corresponding tools of Kali Linux to detect MySQL injections and other vulnerabilities and resolve them.
If you have any questions regarding to the described process, please contact me.
Best regards
RiDi engineering