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My goal is to understand and reproduce its seed-key security algorithm so I can calculate valid keys locally without querying the vehicle. Its a Motorola MPC55x-based ECU from year 2004-2010, which have some commons with the SAEJ1939 protocol. Here is what I need back: • A clear explanation of the algorithm’s logic and any relevant constants • Working code (C or Python preferred) that converts an arbitrary seed to the correct key • A short test sheet showing that your routine matches the ECU’s responses for at least five seeds I provide If reversing shows multiple possible variants, document each branch and note how to detect which one is active. Turn-around time is flexible but please outline how long you expect for each phase—initial analysis, implementation, and validation—so I can plan my bench sessions accordingly. If you bid into this project, and have a previous history of reverse engineering this type of problem, i will send you: 3x seed key pairs. 3x CAN trace of full session 3X BDM flash backup of ECU matching CAN traces. I will be avaliable to assist in any way i can.
Project ID: 40610590
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32 freelancers are bidding on average €548 EUR for this job

As a seasoned AI specialist and software engineer, I bring forth an interdisciplinary skill set that is perfectly suited for this challenging reverse engineering project. For over 12 years, I've been honing my abilities in algorithm analysis and implementation, which has provided me with the necessary acumen to understand complex codes and develop precise solutions. My rich experience traverses various domains including machine learning, deep learning, computer vision, and more importantly automotive security systems. Moreover, my proficiency in C++ and Python aligns well with your desire for a working code written in these languages. I have successfully executed intricate automation projects by leveraging these languages to optimize performance and ensure functionality at scale. Notably, I have excelled in tasks that require transforming elaborate algorithm logic into efficient functioning programs. To showcase my capability to meet your needs effectively and efficiently, let me invite you to view over 600 projects which I have completed so far- producing high-caliber work within deadlines is central to my job ethos. Understanding the value of your time on the bench sessions
€1,500 EUR in 14 days
8.0
8.0

Hello, I can analyze the MPC55x ECU firmware, CAN diagnostic sessions, and supplied seed-key pairs to identify and reproduce the security-access algorithm. I will correlate the CAN challenge-response exchanges with the matching BDM flash images, locate the relevant PowerPC routines, recover constants and transformation logic, and determine whether the ECU uses multiple algorithm variants. My proposed phases are: 1. Initial analysis: 2–4 days to review the three CAN traces, map the diagnostic sequence, and locate candidate routines in the firmware. 2. Reverse engineering and implementation: 3–6 days to reconstruct the algorithm and deliver clean Python or C code. 3. Validation: 1–2 days to test against your supplied pairs and at least five additional seeds collected during bench sessions. The final delivery will include a clear technical explanation, recovered constants, documented variant branches and detection rules, executable source code, and a test sheet comparing calculated keys with ECU responses. I will also distinguish whether the mechanism is based on SAE J1939 diagnostics, a manufacturer-specific challenge-response routine, or another embedded implementation. Please send the three seed-key pairs, full CAN-session traces, matching BDM flash backups, ECU identification details, and any known diagnostic service or access-level information. I will perform the work only on hardware and firmware you are authorized to test. Best regards, Asif Baloch
€750 EUR in 10 days
5.9
5.9

Hi, I can confidently offer our services for your Automotive Seed-Key Algorithm Reverse-Engineering project. We stand on solid ground when it comes to C, C++ and Python programming – the very languages you prefer for this task. Moreover, with our commendable experience in firmware development, embedded systems, and PCB design, deciphering the seed-key security algorithm of your ECU from 2004-2010 poses an exciting challenge we're well-suited to take on. What sets us further apart is our meticulous execution of comprehensive projects. We make sure that our deliverables align precisely with client expectations. In this case, I promise a clear explanation of the logic behind the algorithm and any relevant constants, coupled with accurate working code that converts any given seed to the correct key. Our C++ / Python proficiency and track record working within similar problem fields only enhance these assurances. .
€250 EUR in 7 days
4.7
4.7

Hi there, I’m M Mobasher, an experienced developer adept in C Programming, Embedded Systems, and Python - all of which align seamlessly with your project's requirements. While it might not be immediately evident from my profile, I have a profound interest and significant expertise in reverse-engineering, particularly when dealing with intricate algorithms. Not only do I have all the necessary tools and hardware to analyze automotive systems like the one you have, but so do I have a solid understanding of the SAEJ1939 protocol and Motorola MPC55x-based ECUs. My extensive background in software development makes me uniquely qualified to fulfill this task for you. As a developer who has worked with both C and Python extensively, I assure you a high-quality code delivery that converts arbitrary seeds to precise keys, closely matching your ECU responses. I'm also confident that my experience in analyzing and documenting multiple possible variants can be leveraged to identify active branches efficiently. Rest assured that your project would be handled with utmost dedication and professionalism.
€500 EUR in 3 days
4.2
4.2

Hi, your project is a focused ECU security analysis: identify the seed-key logic on a Motorola MPC55x-based controller, reproduce the key calculation locally, and verify it against real traces. I understand you need more than a guess, you want the algorithm logic, constants, usable code, and a test sheet that proves the routine matches the ECU. I’ve worked on reverse-engineering and protocol analysis tasks where CAN traffic, flash backups, and sample challenge-response pairs are used to isolate the active branch and implementation details. My approach would be: inspect the 3 seed-key pairs and full CAN sessions to map the exchange, compare them against the BDM dump to locate the relevant routine, then implement the key generator in Python or C and validate it against your provided seeds. If you share the traces and backups, I can outline the phases clearly and get started right away. Best regards, Gabriel
€250 EUR in 7 days
3.6
3.6

Slagelse, Denmark
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