Binary Exploitation (CTF / Pwn) Expert Needed – Local & Remote Exploit Development

@maxscender

I can help you. I will pinpoint the vulnerability in the source—whether it’s a stack-based overflow, format string, or heap-based primitive—and script a reliable pwntools exploit. I will specifically check for x64 stack alignment requirements (MOVAPS) to ensure the exploit doesn't fail on the remote service after working locally. I noticed the CUDA tag; if the binaries utilize GPU-accelerated libraries, I’ll verify that the ROP chain or shellcode accounts for that specific execution environment. I’ll handle PIE/ASLR bypasses using the provided libc to ensure consistent exploitation across both targets.

@sufyand1

Hello there, I have solid experience in binary exploitation (pwn) and have solved multiple CTF challenges involving buffer overflows, format string bugs, and bypassing protections like NX, PIE, and RELRO. I can analyze both ELF binaries, identify vulnerabilities, and develop reliable pwntools-based exploits that work locally and against remote services. My workflow includes static + dynamic analysis using GDB/pwndbg and crafting clean, reproducible scripts. I’ll also provide a clear write-up explaining each step of exploitation. Estimated completion time is 1 days for both tasks. Happy to share past CTF examples upon request.

@durgesh8527

As a seasoned full-stack developer with over 12 years of experience, my skills extend far beyond just designing and implementing software solutions. My proficiency in C Programming and Python, combined with a deep-rooted understanding of web and backend systems like Linux ELF, x86_64 and Python (pwntools) for exploit scripts makes me the perfect fit for this project. In terms of binary exploitation, I have extensive prior experience solving CTF and pwn challenges similar to the ones mentioned. I'm also well-versed in using GDB / pwndbg / gef and am quite familiar with protecting against NX, PIE, RELRO. The fact that I can grasp requirement nuances quickly means that our collaboration will yield efficient results with minimal back-and-forth. Given the complexity and need for strategic thinking required in projects like these, my 12 years of experience will undoubtedly prove beneficial. My unique positioning as someone who can handle end-to-end software solutions – from analyzing vulnerabilities to developing exploits – is invaluable here. I am confident in my ability to complete each task bringing along detailed explanations of vulnerabilities, exploitation steps, and freshly obtained flags.

@digilogies

As a seasoned and talented web developer with over six years of experience, I have acquired profound skills in Linux and Python programming that make me the optimal candidate for this project. Not only am I well-versed in frontend (React.js, Vue.js) and backend (Django, Node.js) development, but I also possess a deep understanding of the exploitation techniques you seek expertise in - binary exploitation (pwn) being one of them. Most notably, I have an impeccable track record in delivering results-focused projects: 850+ projects completion, 20000+ hours worked, with a high client rehire rate on Freelancer.com. This serves to demonstrate my ability to understand project goals while ensuring high-quality results are delivered within agreed-upon deadlines. Moreover, my extensive knowledge and usage of pwn tools and protections such as NX, PIE, RELRO will allow me to analyze your project binaries effectively and develop strong exploits for each challenge while ensuring their usability both locally and against the remote service. Choosing me means prioritizing your project's success through an experienced hand. Let’s discuss how we can maximize this opportunity!

@cindyviorinar

Hi, I am Cindy Viorina and I specialize in binary exploitation and pwn-style CTF work. I have read your request for two x86_64 ELF challenges with source and libc provided and remote services available. I will analyze each binary with GDB/pwndbg, identify vulnerabilities, build pwntools exploits, and validate them locally and against the remote service until they reliably call the internal flag function. Technically, I will use static source review, dynamic debugging to confirm offsets and gadgets, leak strategies as needed (format/heap/ret2libc/ROP), and scripted pwntools exploits with clear automation for local and remote targets. I can communicate in real time in your timezone and deliver a simple demo within 12 hours of start. Estimated time: 1.5 to 3 days per challenge depending on mitigations. Examples: multiple CTF pwn solves involving heap/ROP and format string chains; available on request after contact. Q1: target service IP/port and any rate limits? Q2: are both challenges identical protection levels (NX, PIE, RELRO)? Q3: any constraints on exploit size or payload delivery? Which challenge should I prioritize first and do you allow iterative uploads of partial exploits during testing? Best regards, Cindy Viorina

@Martinp400

EXPERT ((Debugging, Penetration Testing, Reverse Engineering, Security, x86/x64 Assembler, CUDA, C Programming, Python and Linux)) DEAR EMPLOYER, I’ve completed the exact same projects before successfully. Awarding me will be the fastest way to complete your task with the best rates possible. I CAN ASSURE YOU 100% THAT WE ARE FULLY CAPABLE OF EXECUTING ANY LEVEL OF TASK/PROJECT BASED ON THE SKILL REQUIRED. I am fully confident about our skills and my understanding of the project description and we are ready to go through any test or sample task you assign to acquire your trust. Let me know when are you available for an initial 15-30-minute discussion (FREE OF CHARGE) so we can discuss the requirement in detail and I can walk you through the mentioned systems to acquire your trust in my skill. REST ASSURED YOUR WORK IS IN VERY SAFE AND PROFESSIONAL HANDS. THANK YOU

@dawidk40

Hello, As a seasoned hacker with extensive experience in binary exploitation (pwn), I am adept at quickly identifying vulnerabilities, such as buffer overflows and format strings that are relevant to the project. My familiarity with GDB, pwndbg, and gef ensures that I’m not just highlighting issues but also finding practical, efficient solutions for them. Moreover, leveraging my familiarity with pwntools in Python, I can code working exploits not just locally but also against remote services - a necessity for your project. To further support my suitability for the job, I have successfully tackled similar CTF or pwn challenges throughout my career. These tasks have sharpened my skills in understanding and exploiting binaries similar to yours, underlining my ability to bring effective results. With an approach consistently focused on seeking exploits and developing appropriate tools to maximize their impact, I'm committed to providing you top-notch work. Lastly, an estimate of 10-15 hours is what it would take me to complete this project with utmost proficiency. Considering both the quality of work you desire and the complexity of binary exploitation, hiring someone with my specific skill set will save you valuable time and resources while ensuring excellent outcomes. Let's connect and discuss the specifics of your project further! Thanks!

@mateoc72

Hi, I’m a Software Engineer with strong experience in binary exploitation and CTF challenges. You need help analyzing two ELF binaries and building working exploits for both local and remote targets—I can handle that cleanly using pwntools and proper libc-based ROP. You will get reliable scripts, clear documentation, and both flags extracted. I’ve solved similar pwn challenges involving buffer overflows and remote exploitation before. Do you already know what protections (PIE/NX/RELRO) are enabled on both binaries?