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I am developing a Cabal Online Private MMORPG (EP 35 +). The system works through .so library injection into the game server process, and includes: Advanced C++ development Memory hooks and offset manipulation Packet interception and handling (C2S / S2C) Internal game structure interaction Modular plugin system JSON-based configuration Linux-based deployment I am looking for an experienced developer to help expand, stabilize, and improve this system. - Technical Requirements Strong C++ (advanced level); Linux development experience; Memory manipulation (pointers, offsets); Hooking / detours; Reverse engineering knowledge; Networking and protocol understanding; Advanced debugging skills; Nice to have: Experience with MMO private servers; Familiarity with Cabal, MU Online, Ragnarok, or similar; systemd and automation experience; Binary analysis experience; - Scope of Work Develop new gameplay plugins and features; Fix crashes and stability issues; Improve performance; Expand event systems; Technical documentation; Potential development of an admin API; - Engagement Model Long-term collaboration; Milestone-based or monthly payment; Medium to long-term project; - Important This project involves deep server-level modification of an MMO. Real hands-on experience with similar systems is highly preferred. Candidates may be asked to demonstrate relevant previous work.
N° de projet : 40229131
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24 freelances proposent en moyenne $3 951 USD pour ce travail

Hello! We have strong hands-on experience with advanced C++ development in Linux environments, including memory manipulation, hook implementation, detours, and process-level interaction. Working with .so injections, offset handling, packet interception (C2S / S2C), and internal structure interaction is fully within our technical scope. We’re comfortable operating at the binary level and debugging complex stability and performance issues in live server environments. For your Cabal Online private server, we can help expand the modular plugin system, improve crash resilience, optimize performance, and extend gameplay/event systems cleanly without compromising server stability. We understand the importance of structured architecture in MMO environments and can help formalize documentation and potentially design an admin API layer for easier management. Our approach would start with a full technical audit of the current injection layer and plugin framework, followed by stabilization and modular expansion. We’re comfortable working milestone-based or on a long-term collaboration model. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Kateryna Sales department Tangram Canada Inc.
$4 250 USD en 7 jours
7,7
7,7

With over 10 years of experience in advanced C++ development and Linux-based deployment, I understand the challenges of expanding and stabilizing a Cabal Online Private MMORPG system like yours. Your need for strong C++, memory manipulation, packet interception, and system interaction align perfectly with my expertise. Having worked extensively on MMO private servers and game structure interaction, I have a proven track record of developing new gameplay plugins, improving performance, and enhancing event systems. My experience in reverse engineering, hooking/detours, and networking protocols makes me well-equipped to tackle the technical requirements of your project. I am ready for a long-term collaboration with milestone-based payments, ensuring that we can achieve your project goals efficiently. Let's discuss how I can contribute to expanding and enhancing your Cabal Online EP35+ system. Contact me now to take your project to the next level.
$4 000 USD en 45 jours
7,2
7,2

Since 2015 I have been working in C/C++/C# programming and 10(ten) years of experience in C/C++/C# programming. Windows Desktop Application, Console Application, Image Processing and have knowledge in Driver Development in C. Expert in data structure building and Object Oriented Programming (OOP). Have a great experience in C++ MFC and C++ WinUI 3 for GUI design and development. Also expert in C/C++ GPU CUDA programming. If you want a good delivery of the project, then send me a message, please.
$5 000 USD en 45 jours
7,4
7,4

With an extensive background in C++, game development, and server-level modification, I'm the ideal candidate for your Cabal Online EP35+ project. Over my 8-year career, I've honed my skills in memory hooks, offset manipulation, packet interception, and handling, among others - all key requirements for your project. Additionally, I have hands-on experience with MMO private servers and an excellent grasp of Linux systems. My approach to development is meticulous and comprehensive. I pay great attention to detail while also keeping in mind the bigger picture. This mindset has allowed me to develop scalable and modular systems like the one you're seeking with the Cabal Online EP35+. My past collaborative experiences have received commendations for producing highly stable systems that perform optimally. Moreover, I have a deep understanding of network protocols and advanced debugging skills, which are essential for identifying and rectifying crashes and stability issues - a prominent part of your project. Emphasizing a long-term engagement, my commitment is towards crafting a program that encompasses everything you envision while optimizing it to meet user needs. Let's turn your vision into an unparalleled reality!
$4 000 USD en 7 jours
6,7
6,7

With over a decade of hands-on experience, my team and I have mastered the art of building intelligent, scalable solutions. This includes extensive C++ and Linux development, memory manipulation, network understanding, and advanced debugging skills – all the technical requirements your project calls for. Our expertise even extends to binary analysis, an aspect that could prove extremely valuable with your deep server-level modifications in this MMO. But what truly sets us apart is our ability to see beyond code and understand the impact of our work on businesses. We’re not just developers; we’re technology partners who provide end-to-end solutions that align with your growth plans. Given the large scope of work involved in developing gaming systems like yours, it’s crucial to collaborate with a team that has real hands-on experience with similar systems. With our extensive background in PRIVATE MMORPGs involving cunning uses of technology like packet interception and handling, offset manipulation, memory hooks, etc., we can expand, stabilize, and improve your Cabal Online system exactly as you envision it including introducing new gameplay plugins, improving performance, expanding event systems or even potentially developing an admin API.
$3 000 USD en 7 jours
6,3
6,3

Hello, I’m excited about the opportunity to contribute to your project. With strong experience in advanced C++ development on Linux, low-level memory handling, hooks, and network protocol analysis, I can help expand and stabilize your injected server module while improving performance, reliability, and modular plugin architecture. I’ll work directly within your existing structure to implement new gameplay features, resolve crashes, refine event systems, and maintain clean, well-documented code that supports long-term scalability. You can expect clear communication, disciplined debugging, and a high-quality implementation aligned with the depth and complexity of your MMO server modifications. Best regards, Juan
$3 000 USD en 7 jours
5,3
5,3

I can help you with this. Your .so injection approach is solid, but there are a few stability concerns worth addressing upfront: Offset management — EP35+ structures shift between minor patches. Hardcoded offsets will break silently. Pattern scanning with signature fallbacks prevents this. Hook thread safety — Game servers are heavily multi-threaded. Detours on shared structures without proper synchronization cause intermittent crashes that are nearly impossible to reproduce in testing. Packet handler memory — C2S/S2C interception that allocates per-packet without pooling will fragment memory over long server uptimes. This shows up as gradual performance degradation, not immediate crashes. For your plugin system, I'd recommend isolating each module's hook registrations so a faulty plugin can be unloaded cleanly without restarting the server process. I work directly in C++ on Linux, comfortable with GDB/lldb for live debugging injected processes, and familiar with the architectural patterns common to Korean MMO server emulation (Cabal, MU, RF Online share similar internal structures). Practical approach: start with crash stabilization and proper logging infrastructure before adding new features. Makes everything after that significantly easier to develop and debug.
$3 000 USD en 7 jours
4,0
4,0

I’m excited to help expand, stabilize, and improve your Cabal Online Private MMORPG server. With my expertise in C++, Linux development, and memory manipulation, I can ensure the server's stability and performance while introducing new gameplay features. Approach: - Gameplay Plugins and Features: Develop new features leveraging C++ and memory manipulation techniques for deep game interaction. - Fix Crashes and Stability: Use advanced debugging to identify and fix issues for smoother gameplay and better performance. - Improve Performance: Optimize server processes and memory management to minimize lag. - Expand Event Systems: Develop new event systems and enhance gameplay dynamics. - Technical Documentation: Provide clear documentation for future scalability. - Admin API: Optionally, develop an admin API to improve server management. Skills: - Advanced C++ development for memory hooks and offsets. - Linux-based deployment, systemd, and automation. - Expertise in reverse engineering, network protocols, and packet handling. - Debugging, performance optimization, and API development. Experience: With hands-on experience in MMO private servers and deep server modifications, I’m well-equipped to contribute effectively to your project. Let’s make this project a success together!
$4 000 USD en 7 jours
4,1
4,1

Hello , I have relevant experience. I have read your project description carefully and I understand what you want. I am an expert with 10+ years of experience in C++ Programming, API Development and I helped many clients reach their goals. Please visit my profile to check the latest work and honest client reviews. If you like my approach, please connect in chat. Looking forward, Jayabrata Bhaduri
$4 000 USD en 7 jours
2,0
2,0

Hi, I am senior web app developer with 7 years of experience in API Development, Debugging, C Programming, Reverse Engineering, Game Development, Linux, System Administration, C# Programming, Technical Documentation and C++ Programming. I 've checked your project detail and understood what you want. I can also support both app design and development. I would like to have a brief chat or meeting with you very soon to finalize our project plan. Thank you Kashif.
$3 000 USD en 21 jours
1,2
1,2

Fall River, United States
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