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I need a skilled reverse engineer who could help us patch our binary executable in our video game so they do not allow for direct injection of packets. We have the source code from an older build but this is very old and will not compile with modern tools. We want to try to patch the binaries to secure them or reverse them to rebuild them.
Project ID: 40527921
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38 freelancers are bidding on average £537 GBP for this job

Hi, this looks less like a simple patching task and more like a decision between binary hardening and protocol-level trust redesign. The real engineering risk is treating packet injection as a single executable issue when the actual weakness may sit across client message construction, validation boundaries, and server acceptance rules. I’ve worked on systems where the first step is narrowing the fault domain before changing anything irreversible. In a case like this, I usually structure the work as discovery first: identify the packet flow, isolate the trust boundary, and determine whether the exploit is best addressed in the binary, in protocol validation, or by rebuilding a constrained component. The closest relevant work on my side is TikTok AI Livestream Setup for real-time C# integration behavior, plus Custom Feature Development & Integration for stepping into an existing codebase, reviewing constraints, and defining a practical modification path. Given the age of the older source, I’d approach this by separating analysis, patch feasibility, and rebuild feasibility so you do not commit early to the wrong path. That usually exposes whether a targeted executable patch is durable or just cosmetic. These are the kinds of systems I design for long-term maintainability, not one-off fixes. If useful, I can start by sketching the investigation plan and decision tree for patch versus rebuild. Thanks, Hercules
£500 GBP in 7 days
6.8
6.8

Hi there, I understand you need a skilled reverse engineer to analyze your current video game executable and patch the binary so direct packet injection is blocked, while using the older source code only as a reference where useful. I have experience with binary analysis, game security hardening, assembly-level debugging, packet validation, client/server protocol review, and safe patching workflows for existing executables. I will trace the network handling flow, identify weak packet entry points, apply a stable defensive patch, test it against injection attempts, and provide a clean patched build with concise technical notes. Q1: What platform and architecture is the executable built for, such as Windows x86 or x64? Q2: Can you provide the current executable, old source code, and any symbols, logs, or crash reports available? Q3: Do you already have a reproducible packet injection method or test case that should be blocked? Best regards, Stratos
£500 GBP in 7 days
6.1
6.1

I can help you. Reversing and rebuilding the entire binary from an outdated source is a massive rabbit hole. The practical approach is to patch the current executable directly. We can use your old source code simply as a reference map to quickly locate the network dispatch routines in the modern binary. Once identified, I will inject a patch—likely an inline hook—that adds a strict integrity check, such as internal memory signatures or call-stack validation, right before the network send functions. This ensures the executable immediately drops any externally injected packets that didn't originate from the legitimate internal game logic.
£1,500 GBP in 7 days
5.5
5.5

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have experience with reverse engineering and patching executables to secure applications against unauthorized injections. The key to success is understanding the binary structure and system calls to implement effective security patches. Approach: ⭕Analyze the existing binary for vulnerabilities, ⭕patch to block unauthorized packet injections, ⭕test thoroughly on target game builds, ⭕document changes clearly. ❓Do you require support for multiple platforms or a specific target environment? I am confident in delivering a reliable patch that enhances your game security effectively. Best regards, Nam
£550 GBP in 5 days
5.2
5.2

Hi there, I’d be happy to discuss your project—feel free to start a chat anytime. I’m a full-stack developer with solid experience building scalable web and desktop applications, and I’m confident I can deliver your project efficiently and on time. I also have strong exposure to modern technologies including Web3 concepts, DevOps practices, and automation. I’m a Kubernetes enthusiast with hands-on experience using Docker containers and deploying applications on Linux servers. My expertise includes: MERN / MEAN Stack (development + team management) .NET Core APIs with Angular, including D3.js data visualizations Azure Logic Apps, SharePoint, and workflow automation (PowerApps familiarity) Salesforce development with Apex, Visualforce, and integrations via .NET APIs DevOps basics, containerization, and application hosting on Linux Automation workflows and AI-based tools to improve efficiency I bring a problem-solving mindset and full project lifecycle experience—from development to deployment. Looking forward to hearing from you. Thank you!
£500 GBP in 4 days
4.7
4.7

Hello, I hope this message finds you well! My name is Ruslan, and your project immediately caught my eye. With extensive experience in software development and engineering, I am confident in my ability to tackle the challenge of your project. I understand that you need a reverse engineer to patch your video game binaries, so as to restrict direct injection of packets. Rest assured, I have the necessary skills and tools like LLM and RAG to handle such intricate tasks. My proficiency does not end there, though. Aside from being well-versed in AI integration and 3D web applications, I am deeply grounded in JavaScript frameworks both on the frontend and backend. Also, my solid grasp on Python emphasizes my capacity to navigate any complex task thrown my way. Essentially, with my skillset comprising many areas applicable to your project needs, I believe I am the ideal freelancer for you. My Love for what I do, keenness on using modern tools & up-to-date knowledge render me reliable for troubleshooting old sources codes as you require them for your newer builds. Let's team up and breathe new life into your video game binaries for a more secure interface!
£300 GBP in 7 days
4.2
4.2

Drawing from my extensive skills in computer security, software development, and C++ programming, I assure you that entrusting this project to me would be a prudent decision. Over the years, I have repeatedly demonstrated my ability to navigate complex coding scenarios using outdated or incompatible tools and systems - an invaluable asset given your request to secure your binary executables. Reverse engineering is a challenging field that demands years of patience and technical acumen- qualities which I've honed through my expansive work history. Additionally, while cybersecurity is listed as part of my ‘Other High-Demand Skills,' it is worth emphasizing just how pertinent this skillset is to the task at hand. My expertise in penetration testing and SOC2 compliance will enable me to identify potential vulnerabilities in the current build and employ proactive measures necessary for its robust patching. It’s crucial to remember that guarding your intellectual property means ensuring uncompromised integrity across all aspects of your build.
£500 GBP in 3 days
3.5
3.5

Hello, how is it going? For this type of work, the focus would be on analyzing the current binary behavior, identifying where network packets are being constructed/handled, and applying defensive patches or validation layers to prevent unauthorized injection or manipulation. Given the constraints of an outdated source codebase, a hybrid approach of binary-level fixes combined with protocol hardening and integrity checks would be most practical. The work can include executable analysis, identifying vulnerable network handling paths, reinforcing packet validation, adding server-side verification logic where possible, and designing safer communication patterns to reduce reliance on client trust. If feasible, reconstructing critical modules from legacy C# / C++ code into a maintainable modern structure would also be part of long-term stability. I have experience in C#, C++, debugging, software security, reverse engineering concepts, and building secure client-server architectures with anti-tamper considerations. The workflow would be binary analysis, vulnerability mapping, patch design, implementation/testing of fixes, validation against injection scenarios, and documentation of the applied security improvements. Final delivery includes a patched and stabilized build, documented security changes, recommendations for long-term architecture improvements, and optional guidance on rebuilding vulnerable modules in modern tooling. I'm ready here for you, Let's get started!
£500 GBP in 7 days
2.4
2.4

Hello. Thank you for sharing your project details. Securing your game’s binary against packet injection is a critical step to protect your user experience and maintain game integrity. Given the constraints of outdated source code and the need for binary patching, the focus should be on delivering a robust, maintainable solution that aligns with your security goals and timeline. To ensure business value, I propose the following approach: - Backend: Conduct thorough binary analysis and debugging to identify injection points, leveraging C++ and C# expertise to understand legacy code behavior. - Frontend: Assess any client-side vulnerabilities that could facilitate injection, ensuring the patch integrates seamlessly without disrupting gameplay. - Real-time: Implement runtime checks or hooks to detect and block unauthorized packet injections dynamically. With over 7 years in reverse engineering and software security, I have successfully secured legacy applications and games under similar constraints, balancing quick wins with long-term maintainability. Could you clarify if you require ongoing support post-patch for monitoring or further updates? Also, do you have any preferred tools or environments for the patching process? Looking forward to discussing how we can safeguard your game effectively. Best regards,
£500 GBP in 5 days
2.1
2.1

Hi, I have hands on experience with reverse engineering, binary analysis, legacy C/C++ applications, protocol inspection, and security hardening. Based on your description my first step would be identifying the packet injection vector, mapping the relevant code paths inside the executable, and determining whether binary patching or source reconstruction provides the most maintainable solution. I am comfortable working with outdated codebases, disassemblers, debuggers, and low level analysis tools, and can provide a clear assessment before any implementation begins. Kindly contact me for further discussion.
£500 GBP in 7 days
2.2
2.2

Hi there, I just read your posting. It sounds like you need an experienced software engineer who can help build, improve, and maintain a reliable solution using Debugging, Software Engineering, Security, C++ Programming, Binary Analysis, Software Development, C# Programming, Computer Security and Reverse Engineering. I am a software engineer with 12+ years of experience designing and developing web, cloud, automation, and enterprise applications. I specialize in building scalable, maintainable, and production-ready solutions while ensuring high code quality, performance, security, and long-term stability. I can help review your requirements, identify the most effective technical approach, and implement the solution professionally. Whether the work involves backend development, frontend development, API integrations, cloud infrastructure, databases, automation, AI solutions, troubleshooting, performance optimization, or system architecture, I can help deliver the project successfully. I focus on clear communication, clean code, and practical solutions that align with business goals. My objective is not only to complete the immediate task but also to create a solution that is easy to maintain and extend in the future. Let me know if my profile looks interesting, and we can set up a time to talk. Best regards, Elijah M.
£700 GBP in 6 days
0.0
0.0

Wow! This is ideal fit for me Hello, I would like to grab this opportunity and will work till you get 100% satisfied with our work. I'm familiar with this kind of task and have many years of experience on Computer Security, C# Programming, C++ Programming, Debugging, Software Development, Binary Analysis, Security, Reverse Engineering, Software Engineering Lets connect in chat so that We discuss further. Thank You
£250 GBP in 7 days
0.0
0.0

Hi, I am available now to assist you. I have read your project description. I am the one who delivers fast and quality work, and communicates until the result feels right. I am a reliable freelancer with 8+ years of experience in Software Development, C++ Programming, Debugging, Security, working with clients on a range of projects. Visit my profile to check my latest work and read what clients say. If you like the proposal, connect in chat and we will plan it out. Regards, Sai
£250 GBP in 7 days
0.0
0.0

With comprehensive proficiency in C# and C++ programming, as well as extensive experience in software development and engineering, I can assure you of efficiency, accuracy, and dedication to all your software-related projects. Although I haven't specifically done reverse engineering for video games, my proficiency in the languages, coupled with my knack for problem-solving and thinking outside the box, make me confident in tackling this challenge. My expertise extends beyond just coding. It incorporates deep machine learning and artificial intelligence skills that would significantly benefit your project as we seek to patch and secure your binaries. Using predictive modeling, neural networks, and data analysis from various cloud platforms like AWS and Google Cloud Platform, I commit to providing innovative solutions tailored to your specific needs. Moreover, my experience with VBA scripts, macros, interactive interfaces, and intricate formulas adds value to my work. This means that not only can I reverse engineer but also rebuild and improve upon the existing code for a stronger defensive structure. I genuinely believe that this combination of skills makes me a strong contender for your project. Would love to put my many talents at your disposal!
£500 GBP in 7 days
3.5
3.5

Your project is a strong match for my experience with legacy software analysis, reverse engineering, binary patching, and codebase modernization. Based on your description, I would begin with a structured audit of both the current executable and the older source code to determine the most practical path forward. The goal would be to identify where packet handling and validation occur, assess the feasibility of patching the existing binaries, and evaluate whether rebuilding from the legacy source is a viable long-term solution. Approach includes: • Analysis of the current executable and architecture • Comparison against the legacy source code where available • Identification of packet-processing and validation logic • Assessment of security weaknesses and exploit vectors • Binary patching where appropriate and maintainable • Documentation of all findings and modifications • Evaluation of options for modernizing or rebuilding the codebase I follow a careful, production-safe workflow with backups, version control, and detailed reporting before any modifications are made. Rather than applying quick fixes, I focus on understanding root causes and recommending the most sustainable solution for long-term maintenance and security. Deliverables can include a technical assessment report, implementation roadmap, patched binaries, documentation of changes, and recommendations for future development or recompilation strategies.
£500 GBP in 7 days
0.0
0.0

Hi there, I am happy to help with this project. I have experience working with legacy applications, reverse engineering, binary analysis, and security-focused software improvements. Based on your description, my first step would be identifying how packet creation, transmission, and validation currently work inside the executable. From there, I can analyze the injection vectors, review the older source code for reference, and determine the safest approach, whether that means patching the existing binaries, strengthening packet validation, adding integrity checks, or recovering enough functionality to support a modern rebuild. My background includes C/C++, C#, Node.js, desktop applications, game-related systems, network protocols, and software security. I’m comfortable working with disassemblers, debuggers, and binary analysis tools to understand undocumented code paths and implement reliable fixes. I can provide: • Full analysis of the executable and network flow • Identification of packet injection vulnerabilities • Binary patching recommendations and implementation • Documentation of findings and changes • Guidance on long-term modernization options I’m available to start immediately and can work closely with you throughout the investigation and patching process. Looking forward to discussing the project. Best, M Fawad
£600 GBP in 7 days
0.0
0.0

Hey! With over 5 years of professional experience in software development and a comprehensive skillset centered around full-stack development, I firmly believe I'm the right freelancer for your reverse engineering project. My knowledge in areas such as app security, API development, and performance optimization is perfectly suited to identify and patch vulnerabilities in your binary executables. I've worked on various projects which required working with outdated codes and had to be adapted to modern tools effectively. This experience will prove invaluable as I navigate through the old source code and apply the necessary patches to maintain the security of your game. Additionally, I understand that more than just getting the work done, it's important that the final product aligns with your business objectives. Throughout my career, I have leveraged technology to help businesses grow, scale, and automate their processes - a philosophy that I believe resonates well with what you're aiming to achieve. With my dedication to clear communication and timely delivery, together we can build a secure and efficient gaming system that takes your brand forward.
£500 GBP in 20 days
0.0
0.0

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