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I have full access to a PHP code-base that I can share immediately. I already know exactly which file and function contain a hidden back door; I just need a seasoned developer to: • remove every trace of that back door cleanly, • rebuild/package the application so it runs flawlessly after the fix, and • verify the change with a quick security review and functional smoke test. You’ll receive the source archive, a short note pointing to the suspect section, and the steps I normally use to deploy. Hand back the cleaned code, a brief changelog, and confirmation that the application still behaves as expected on a standard LAMP stack.
Project ID: 40184296
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Active 2 mos ago
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26 freelancers are bidding on average $14 USD/hour for this job

⭕⭕SENIOR PHP SECURITY DEVELOPER⭕⭕ Hi there, ✔️ Based on your requirements, I can quickly and safely remove the back door from your PHP codebase, rebuild the application, and verify everything runs cleanly on a standard LAMP stack. ✍️ Is the backdoor limited to a single file/function or should I scan the entire codebase for related injections? ✍️ Do you use any CI/CD or should I return a ready-to-deploy ZIP/tarball? ✍️ Would you like a brief security hardening report as well? ♾️ That's all for now. I can commence immediately. I am open to a chat to proceed forward with the next step. Thank You.
$15 USD in 40 days
10.0
10.0

⭐⭐⭐⭐⭐ CnELIndia, together with Raman Ladhani, can efficiently handle your PHP code-base project. We will start by thoroughly analyzing the identified file and function to safely remove the hidden backdoor without affecting existing functionality. Following this, we will rebuild and package the application, ensuring it runs seamlessly on your standard LAMP stack. Our team will conduct a targeted security review and functional smoke test to validate that the fix is complete and that the application behaves as expected. We will deliver the cleaned code along with a concise changelog, detailing the modifications, and provide confirmation of proper deployment and stability. Our combined expertise in PHP, JavaScript, Linux, LAMP, and web security ensures a secure and reliable outcome.
$12 USD in 40 days
9.0
9.0

As an experienced Full-Stack Web Developer, I've spent over 7 years enhancing the reliability, scalability, and performance of various web solutions. My proficiency lies not just in building applications from scratch but also in refining and maintaining existing ones - which makes me a perfect fit for your project. Specific to your requirement, I have an accomplished background in PHP web development - a language that has been at the core of my work. Over the years of working with frameworks like Laravel and CodeIgniter, I've developed an intimate understanding of how PHP code operates, making it easier for me to detect hidden vulnerabilities and sanitize them effectively. In addition to PHP expertise, I am also adept at using MySQL and MariaDB databases which adds value to my backend capabilities. Moreover, my experience with deploying applications on a LAMP (Linux-Apache-MySQL-PHP) stack is in accordance with your project needs. I can assure you that after removing the backdoor traces efficiently, I'll rebuild the app impeccably so it remains robust yet flexible. To further consolidate my competence for this task, let me add that my portfolio includes completing 130+ projects successfully with consistent 5-star client reviews. Partnering with me would ensure timely delivery, clear communication throughout the process and most importantly código seguro!
$12 USD in 40 days
8.8
8.8

hi i am a php developer please send code i will fix error . i have good knowledge in php mysql. Thanks, Ranjit
$12 USD in 40 days
6.2
6.2

With my extensive skills and experience, I am an excellent fit for your PHP code sanitation needs. As a seasoned web developer, I have thorough knowledge of popular programming languages such as JavaScript, MySQL, PHP-- precisely what is needed to proficiently navigate your code-base. I've successfully completed over 500 projects, and my commitment to excellence has garnered consistent 5-star ratings from satisfied clients. Despite the complexity of this task, my proven ability to remove malicious code seamlessly while rebuilding and packaging applications will ensure yours runs flawlessly after eliminating the hidden backdoor. Moreover, I'll thoroughly review your code base for any other unforeseen vulnerabilities and conduct a functional smoke test to validate every aspect of its performance. As we embark on this collaboration, you can rest assured knowing I'm committed not only to timely project delivery but also to providing ongoing support post-project completion. This inclusivity extends to offering a brief changelog documenting all the alterations made and confirmation that your application still behaves as expected on a standard LAMP stack environment. Let's join forces and safeguard both the pristine nature and security of your PHP code!
$12 USD in 40 days
5.4
5.4

⭐Hi there, I’m ready to assist you right away!⭐ I believe I’d be a great fit for your project since I have extensive experience in PHP security and debugging. With a strong track record of securing applications and sanitizing code, I can efficiently remove the back door and ensure your entire application runs flawlessly afterward. This project addresses critical security flaws that could compromise your application and user data, and I'll ensure it runs smoothly on a standard LAMP stack. You can expect a detailed changelog along with the cleaned code, so you know exactly what has been done. If you have any questions, would like to discuss the project in more detail, or would like to know how I can help, we can schedule a meeting. Thank you.
$50 USD in 16 days
5.5
5.5

Hello, hope you're doing well. I can quickly and cleanly remove the identified back door from your PHP codebase, rebuild and package the application, and run a focused security review and functional smoke test to ensure everything works correctly on a standard LAMP stack. I’ll return the cleaned source, a concise changelog, and clear confirmation of expected behavior after the fix. Regards, C YASIR
$10 USD in 40 days
5.5
5.5

Hi, I understand the scope and requirements to locate and cleanly remove a specified backdoor from your PHP codebase, then rebuild the application to ensure it runs flawlessly and securely. My approach will be to meticulously excise the malicious code, conduct a targeted security review, and perform a functional smoke test to confirm stability and expected behavior on a LAMP stack. You’ll receive the fully cleaned and repackaged PHP application, a clear changelog of the fix, and verification of the security review and smoke test, with unlimited revisions. I would love to have a detailed call or chat to discuss your roadmap. Best Regards, @Usman47tech
$10 USD in 40 days
4.0
4.0

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Mayank B
$12 USD in 40 days
3.3
3.3

hi I’m a seasoned PHP developer with strong security experience; I will surgically remove the identified backdoor, repackage the app to run cleanly on LAMP, and perform a focused security review plus smoke test to confirm normal behavior, delivering cleaned source and a brief changelog. Best regards, Giang V
$12 USD in 40 days
2.4
2.4

Hi, I see you need a hidden backdoor surgically removed from a PHP codebase, then rebuilt, verified, and confirmed clean on a standard LAMP stack. I’ve done similar security cleanup and remediation work before. I’m Jeff Chong, a Full-Stack developer with deep experience auditing PHP applications, removing malicious logic, and restoring stable, secure deployments. I can help you with this and can start right away. I’ll trace and eliminate the backdoor at code and dependency level, run static analysis, rebuild the package, and perform a targeted security review plus functional smoke tests. My process includes diff-based validation, regression checks, and deployment verification to ensure nothing breaks. Would you like a short hardening checklist included after cleanup? Let’s discuss this further via chat. Best regards, Jeff Chong
$15 USD in 40 days
2.5
2.5

As a skilled web developer with a keen eye for web security, I want to assure you that your project is in capable hands with me. With my extensive experience in PHP, I've successfully tracked down and eliminated various vulnerabilities, making code-bases like yours much more secure. Additionally, I remain focused on providing clean solutions that include not only removing traces of backdoors but also conducting comprehensive follow-up tests to ensure the code's integrity.
$10 USD in 30 days
0.0
0.0

✋ Hi there! I hope you're doing well. I read your requirements carefully and understood very well about the project scope and start working accordingly in stages. I am having more than 6+ years of experience in programming and I believe that I can start working step by step and achieve the project goal in short time frame. Let’s discuss further. Best regards
$12 USD in 40 days
0.0
0.0

I’ll surgically remove the back door from the specified file and function, ensuring no residual traces or side effects remain. I’ll rebuild and package the application using your provided deployment steps, guaranteeing seamless operation on a standard LAMP stack. Following the fix, I’ll perform a targeted security review of the affected area and run functional smoke tests to confirm expected behavior. You’ll receive a cleaned source archive, a concise changelog detailing the removal and verification steps, and confirmation of successful post-fix functionality. With extensive experience in PHP code remediation and secure deployment, I’ll deliver a clean, production-ready result within 24 hours.
$12 USD in 40 days
0.0
0.0

As a seasoned PHP developer with over 5 years of experience under my belt, I am confident that I can effectively meet all your needs for the codebase. Your project description aligns perfectly with my expertise, as I have had extensive experience debugging, securing and enhancing PHP applications throughout my career. My proficiency in JavaScript, MySQL, PHP and Web Development, in general, have allowed me to develop a keen eye for hidden vulnerabilities within the codebase and provide comprehensive solutions for patching them up effectively. My holistic approach towards problem-solving ensures that not only do I wipe out those back doors you pointed towards, but also clean out any potential trace that could pose a threat. In addition to removing the back door meticulously, I will rebuild and package your application so it runs flawlessly even after the fix. To assure you of its functionality on a standard LAMP stack – which is my forte – I'll conduct thorough security reviews and functional smoke tests. My goal is not just to meet your expectations but exceed them through my precision and diligence. Let's harden your PHP code together!
$12 USD in 40 days
0.0
0.0

Hello, I can help you resolve this quickly and cleanly. I have a lot of experience with projects like this I will completely remove every trace of the backdoor, including any secondary hooks or obfuscated calls and review surrounding code paths to ensure no persistence or re-entry points remain Perform a targeted security review and a functional smoke test to confirm stability and expected behavior. I’m ready to start immediately and can review the source archive as soon as you share it. Best regards
$8 USD in 10 days
0.0
0.0

LAMP stack Expert HERE! Please share your codebase. I can start immediately. Because I have rich experience about php project, especially I worked for the security implentation part. So I am very confident. Thanks.
$12 USD in 40 days
0.0
0.0

Hi, I'm a PHP security specialist with extensive experience in code auditing, backdoor removal, and LAMP deployment. **What I'll deliver:** 1. Complete removal of the backdoor from your codebase 2. Security audit to ensure no other vulnerabilities exist 3. Clean rebuild/repackaging of the application 4. Functional smoke test on LAMP stack 5. Detailed changelog documenting all changes **My approach:** - First, I'll review the file/function you've identified - Trace any related malicious code patterns - Clean removal while preserving core functionality - Test deployment on a standard LAMP environment - Document everything for your records **Timeline:** Can start immediately and deliver within 24-48 hours depending on codebase size. I'm ready to review your code as soon as you share it. Let's get your application secure! Best regards
$12 USD in 40 days
0.0
0.0

Singapore, China
Member since May 30, 2025
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