Delphi reverse engineering

manual coding, using either the Delphi, C++, or Delphi Prism programming languages. With PE Explorer You Can. Anyone knows from where I can get the source code of a virus made in Delphi?Doesnt matter what virus it is as long as I can learn something from it. LiveMaker (including both the game-making applications and the game interpreters) is a Delphi program; I am not a Delphi or Pascal developer, so most of the terms I use will be from the standpoint of a C developer, with object oriented stuff from C++ and/or Python (i. If you're not sure what version of Visio you're using, click File > Account > About Visio. NET MVC Create and publish a NuGet package easily whb. Today anything locked will/can be broken. Modelio - Modeling environment (UML) Modelio is an open source modeling environment tool providing support for the latest standards (UML Reverse Engineering is a "must have" title for anyone working with advanced modern manufacturing technologies, either with a view to researching and improving them further or to making their Reverse engineering Delphi executables? General Discussion. z0ro Repository - Powered by z0ro. of this file? By reverse engineering the Delphi program, in particular the functionality that  24 Dec 2012 Suppose you lose your Delphi project's source and you only have the executable file: reverse engineering (decompilation) is useful if the  25 Feb 2019 The analysis explores pseudo-coded C++ code with Delphi Borland constructs. Find freelance Reverse Engineering professionals, consultants, freelancers & contractors and get your project done remotely online. Reverse Engineering an EXE. See DCU32INT. 2: 11/2001: Java VM: n/a : simulation and test for real-time UML integrates with Rational's Rose RealTime and I-Logix Rhapsody: UMLGraph: UMLGraph: 3. Analyzing a software for know technical principals in it or its objects or making some changes in its behavior throuth analyses of its stucture, function and operation is Reverse engineering. Downloading precision imaging services that combine the digital imaging power of a computer with X-ray technology. See what's inside an executable and what it does; Change and customize the GUI elements of your Windows programs Revendepro is a program to reverse engineer Delphi programs. How to generate UML from C++ Instant Reverse is a process to produce UML class model from a given input of source code. AltDel is a 5-phase script-driven lexical compiler that produces obfuscation by lowering the language level of Delphi source projects. 89. High-quality literature exists for both. Round-trip engineering helps keep your Java source code and software design synchronized. ASPack makes programs and libraries smaller, and decrease load times across networks, and download times from the internet; it also protects programs against reverse engineering by non-professional hackers. 2: 07/2005: Java VM: $0 : generate class UML CASE tool - UML diagrams, use case modeling, reverse engineering and more. Let’s make a brief overview of the those applications, Apriorit researchers frequently use in their projects. Does Bold How to Stay Healthy Until You’re 105 (It’s In Your Gut) | Dr. The book will provide you with insights into the language and its  30 Lis 2014 Reverse engineering – czyli inżynieria wsteczna, to zbiór technik czyli jeśli analizowane oprogramowanie było pisane czy to w C++ , Delphi, . It is a little bit difficult to figure out how to use the components since they are poorly documented, but after a few minutes, I came up with this. Software Engineer - DelphiSomerset, NJ 1 MonthsRemote JOBAll Work Extract and reverse engineer existing code; Work alongside and collaborate with UX  The utility DCU32INT parses *. In the field of cyber security, the reverse engineering can be used to identify the details of a breach that how the attacker entered the system, and what steps were taken to breach the system. 190. How to manage the power and energy available onboard is key to a more efficient and economic powertrain system. What do you like about working at Delphi Technologies? Clean energy vehicles or hybrid electric vehicles are the trend. 05 - 2. PEiD tells me it might be UPX 0. Reverse engineering is the art of generating a source code from the binary's/executable of software[5]. Several Delphi decompilers have appeared that allow anybody, even with limited technical knowledge, to reverse engineer most Delphi executable files. I have started a site offering what I hope to be a long list of tutorials on reverse engineering. pdf 322K Certified Ethical Hacker (CEH) v3. For basic legal information (not "legal advice") surrounding reverse engineering in the United States, see the EFF's FAQ on the subject. Reverse Engineering for Delphi. index-of. It is done to understand how program is doing action, to learn about the type of protection scheme and mainly how to bypass the protection schemes which are protecting the software form unregistered user to use its full Certified Reverse Engineering Analyst (CREA) Practical #1505 . Reverse engineer an existing database. The art of reverse engineering has traditionally been the land of technical wizards, familiar with assembly language and debuggers. Keygenning With Delphi: Useful Delphi Functions and Tips Hello and welcome to this short tutorial for keygenning in Delphi. Puente. 7. I’m now studying for The Delphi method (/ ˈ d ɛ l f aɪ / DEL-fy; [contradictory] also known as Estimate-Talk-Estimate [ETE]) is a structured communication technique or method, originally developed as a systematic, interactive forecasting method which relies on a panel of experts. It is interesting the group continues to leverage Qhoster  So I've been trying to reverse engineer an . 4. Download it once and read it on your Kindle device, PC, phones or tablets. This Manufacturing Engineering Intern will have responsibilities such as: reverse engineering for Java: Tojosoft: d. 62. . Imagix, tools to reverse engineer, understand, analyze, review and document source code. Wifi. You can protect any compiled application file for Windows as long as it's compatible with Portable Executable format, no matter what Delphi is a cross-platform programming language and software development kit that supports rapid application development for Microsoft Windows, Apple Mac OS X, Android, and iOS. Today Delphi and C++Builder users can reverse engineer a class diagram at  Delphi Precision Imaging provides industrial computed tomography scanning and such as failure analysis, reverse engineering, porosity analysis, and more. g. Most reverse engineering options that are open to us stem from one of the key features of managed executable files The legality of reverse engineering is a miasmic subject compounded by differing laws in differing jurisdictions. The rather common case needs you to the exact opposite: Some web service delivers a JSON string and you want to convert the data into an object instance. A programmer initially writes a program, usually in a high- level language such as C++ or C# or Visual Basic (or God forbid, Delphi) etc. Search. Reverse-Engineering Malware instructed by Jess Garcia in Copenhagen (Sep-17). Malwares, Reverse Engineering, and stuff. es. David. com. With instant reverse, you can reverse a snap shot of your code-base to UML classes and form class diagram in further. Visual Paradigm for UML is a professional UML tool that supports complete software lifecycle - object-oriented analysis, object-oriented design, construction, testing and deployment. . The Profiler was introduced in version 8, and support for debugging and recording windows native applications was introduced with Enterprise Architect 7. DFM binary CUPS back-end for the canon printers using the proprietary USB over IP BJNP protocol. Look at my reverse engineering page for a list. 1. Hi, I'm searching a reverse engineering tool that can handle lazarus' code. IDA-Pro, Hex Rays The PE Explorer win32 disassembler is designed to be easy to use compared with other disassemblers. If there are very detailed function entries and sections, then the job for the reverse engineer just got much easier. 9 Oct 2018 Threat actors are increasingly using a Delphi packer to shield their effort to prevent malware from being detected or reverse engineered. txt for more details. FLARE-On is a reverse engineering contest, developed by FireEye Lab’s Advanced Reverse Engineering team. Overview of the Malware Analysis Process 1. Introducing Contemporary Reverse Engineering Techniques to Real World Use 09 Jul 2016, by Anonymous How do we reverse engineer a program these days? For many guys, reverse engineering is just a simple NOP – Set a breakpoint on MessageBox, run, then trace back the stack and revert some conditional jumps. The legality of reverse engineering is a miasmic subject compounded by differing laws in differing jurisdictions. 3. Where do I find the database modeling features for Visio? The Visio add-in for Database Modeling lets you create a database model from an existing database. to databases), information on how certain files are encrypted, and so on. EXE located in the Delphi BIN folder directly from the command line or by using our . Andrea Magni is a software expert and software developer with decades of experience, provides consultation to support development teams in, architectural definitions, problem-solving and / or trouble-shooting activities, introduction of source and project management tools etc. Rather surprisingly, the internal architecture of a decompiler is very similar to that of a compiler. My employer is requesting we run security scans on Delphi desktop applications Analysis Platform (CMU BAP) is a reverse engineering and program analysis  NET Framework, its predecessor was BOLD for Delphi created by Boldsoft. However, in terms of reverse engineering applications written in Delphi (and extracting information on these "programming elements"), the tool DeDe is invaluable. Part two expands on how the researchers reverse engineered the malware, and part three demonstrates The last blog post covered the topic of converting object instances into a JSON string. 6 - 1. The main goal is to generate class diagrams and sequence diagrams So I got that HM-11 stuffed with TI's CC2541 chip and it took me hours to at least discover other devices. This tool is directly related to the reverse engineering and there is no relationship between them. Protection from reverse-engineering Ideally I'm looking for something that will safeguard my . 9M Addison Wesley - Principles of the Business Rule Approach. Even Microsoft products have been unlocked. REC is a portable reverse engineering compiler, or decompiler. Delphi Method: The Delphi method is a forecasting method based on the results of questionnaires sent to a panel of experts. Search the site GO. Delphi executables are easy to reverse-engineer 25 May 2019 in Advanced Delphi :: Simply speaking, decompilation is the inverse of compilation: translating an executable file into a higher level language. There are many Delphi-specific "programming elements" such as classes, units, VCL libraries, etc. chm 1. I have been doing this quite a while and I really just felt like I owed it to all the people who helped me learn what I k Reverse Engineering – The decompiler By allmnet 2018-02-24 2 comments Post , Security For the most part, the debugger are supported and assemble together to decompile, dieosembeulreo also can analyze and decompile a compiled language, because you can see that the dieosembeulreo and the decompiler can do this classification of the advance. From an innovation standpoint, this is where Delphi Technologies is focused. Modellierung-Unterstützung im Delphi -Projekt; Forward Engineering & Reverse Engineering; Klassen-Modellierung  Anyone knows from where I can get the source code of a virus made in Delphi? Doesnt matter what virus it is as long as I can learn something  5 Dec 2014 to anyone who reverse engineers executables on regular basis. Delphi Tips: Hashing a String With Delphi Encryption Compendium(DEC) Today, I wanted to use the Delphi Encryption Compendium(DEC) to hash a string. 90 (Delphi) stub -> Markus  Michael Rozlog – Sr. This is the remit of reverse engineering and this paper looks at various approaches that we can take in reverse engineering aspects of . Times have changed and so have all who have studied here. PE Explorer is intended to be used in various scenarios such as software development, forensics practice, reverse engineering, extensive binary security analysis and binary auditing processes. Pascal reverse engineering. Several other decompilers are available from various sources. Join the Delphi Technologies team as we embark on this exciting transition and become an independent company with a passionate focus on innovative technologies and a commitment to make green possible. This back-end allows Cups to print over the network to a Canon printer. reverse engineering works. Delphi Reverse Engineering Adding functionality to a Delphi program Not Assigned: 26 April 2000 by +DaFixer Courtesy of Fravia's page of reverse engineering: slightly edited by Tsehp There is a crack, a crack in everything That's how the light gets in: Rating ( )Beginner ( )Intermediate (X)Advanced ( )Expert The process of reverse engineering was originally applied to hardware only, but it is now being applied to software, databases and even human DNA as well. The unit versions supported are Delphi  You will be able to open and edit them with Delphi. So, I decided to follow product lifecycle engineering in reverse – working from the actual to the conceptual versus the conceptual to the actual. 1, Build 1229, though much earlier versions support reverse engineering of code. LONDON, March 3, 2016 /PRNewswire/ -- Delphi is the first to provide a single system combining 76Ghz Radar and Vision Sensing. 02 / 1. The obfuscation of Delphi projects is a deterrent against reverse engineering. I have stoped working on the program. Now, he or she knows exactly what is happening when that function is called. SecureCode is a new software protection for Borland Delphi or C++ Builder, based on the lastest technique protection to provide a strong security to protect your software against reverse engineering and illegal decompilation. New Reverse Engineer jobs added daily. dcu file and converts it into a close to Pascal form. Is it possible to retrieve source file from an exe? or one written in Delphi or another non-managed language is not nearly as easy, and all you can really get are My name is Random and I have been in the reversing community for a long time. Everything can be cracked or reverse engineered, it’s just a matter of time / skills / conditions. reverse engineering. Reverse Engineering Databases. Beginning with a basic primer on reverse engineering-including computer internals, operating systems EXECryptor 2. algorithms, hidden access passwords (e. NET Reversing 0; Reverse Engineering Passion Team – REPT My Team’s Offical Site, You can join us, for FREE, and discuss anything about Reverse Engineering Here. Reverse engineering is the process of uncovering principles behind a piece of hardware or software Applications for software reverse engineering. Reverse Engineering Stack Exchange is a question and answer site for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation. You can redistribute   Malware Analyst/Reverse Engineer in Linthicum, Maryland requiring an active security clearance. Andrea Magni . Reverse-engineering a SOAP app into Tomcat/Axis David Kerber Fri, 17 Mar 2006 09:10:21 -0800 We have a functioning SOAP client/server system written in Borland Delphi which isn't scaling very well at all; it works fine until we get to about 45-50 clients at a time. Database Reverse Engineering - Felix John or use the CONVERT. 0 Official Course. vine: 1: 04/2002: Delphi: $69 : reverse-engineering of Object Pascal (Delphi) Tri-Pacific Software: Rapid RMA: 5. 2. Use automated analysis sandbox tools for an initial assessment of the suspicious file. With a compact design the system Reverse Costing of Delphi RACam Today's top 261 Reverse Engineer jobs in Dearborn, Michigan, United States. The website author – R4ndom – He’s making a bundle of Delphi API Programming Tutorials Page The full site about Programming with API in Delphi, Very good site 0; Bl@ckStorm Forum Great site for Discussing about . The program works only with Delphi 4 and 5 and does not work with newer versions of Delphi. IDR can be good for viewing class metadata and generating scripts that can (sometimes) improve IDA results, although they usually need to be manually edited to fix some bogus results. Net, which compile to object-oriented platform-independent bytecode, which retains the names of methods, method parameters, classes and namespaces, and other metadata. Programs compressed with ASPack are self-contained and run exactly as before, with no runtime performance penalties. A programmer initially writes a program, usually in a high-level language such as C++ or Visual Basic (or God forbid, Delphi). Powerfull software tool used for an application code protection from reverse engineering, analysis and modifications, based on a brand new metamorphing code tranformation technology, that provides with strong software security. CANZANESE, JR. A lot of beginners who are trying to learn keygenning often get stuck with questions about how to implement certain things or manipulate strings or characters in certain ways. Protect your source code from decompiling or reverse engineering Implementation of Single Sign On (SSO) in ASP. It’s hard to name the best software reverse engineering tool – there quite a few of them, and each one resolves some specific task of the multistep reversing process. You can create a Delphi project folder with all dfm, pas, dpr files. Several rounds of questionnaires are sent out, and the anonymous MALWARE ANALYSIS CHEAT SHEET The analysis and reversing tips behind this reference are covered in the SANS Institute course FOR610: Reverse-Engineering Malware. I've used DeDe and got the assembly code and all but I'm not able  Reverse engineering of existing databases; Generate SQL (DDL) scripts to create database system; TMS Data Modeler can be integrated with Delphi and C++  1 Aug 2011 Hi! I'm trying to unpack an exe which seems to UPX-protected. 1. uk © 2019 [Lazarus] reverse engineering tool wanted. Please visit eXeTools with HTTPS in the future. Does someone have expieriences with erwin and interbase? Any hints to solve this problem? What do you use to reverse engenier / model your database? Regards, Michael I don't know if you can still download a functional copy of CaseStudio What is reverse engineering? Reverse engineering is the process of taking a compiled binary and attempting to recreate (or simply understand) the original way the program works. Всем добра! Как-то я задумался, какую я выбрал бы себе сверхспособность, если бы поймал Гари Поттера и s1 0 · Reverse Engineering / Кодинг. This is in contrast with Java or . I have a batch file that will  Delphi is an integrated development environment (IDE) for rapid application development of desktop, mobile, web, and console software, developed by  Multi-thread access; BatchMove component; Strong encryption with wide variety of algorithms and modes; Reverse engineering (export tables to SQL script)  Worldwide unaffordable Delphi there you came! with yer gender reverse engineering HAHAHAHAHAH huh even if at least, civilization ran a  11 mar 2019 Analisi del malware Remcos veicolato tramite packer Delphi. Hm, "sources not available", does this mean that we can decompile other people's Delphi projects? Well, yes and no. None of the moderators are trained lawyers, so please use your best discretion when submitting Reversing: Secrets of Reverse Engineering - Kindle edition by Eldad Eilam. For more information, you may want to refer to A Beginner's Guide to Delphi Programming. This is very important, so we need to understand it when reverse engineering. exe and also allow me to put it in "demo" mode, until the user gives me his unique machine code and I give him the pass code to tun it into the full version. -. PDF | Even if reverse engineering is a well known and deeply investigated activity in software engineering, little research has been performed from an Intellectual Propriety Rights (IPRs) perspective. First, we’re going to describe the process of compiling/assembling a source code to an executable file. Download trial version. Version 2. I used Enterprise Architect 12. To that end, some of the functionality found in other products has been left out in order to keep the process simple, fast and easy to use. Generate Java source code from UML class model, and let the UML model reflect the change you made in source code. As a result, industrial computed tomography scanning gives you a closer look at the interior make-up of products and engineering components than a standard X-Ray can. None of the moderators are trained lawyers, so please use your best discretion when submitting Suppose you lose your Delphi project's source and you only have the executable file: reverse engineering (decompilation) is useful if the original sources are not available. I Reversing: Secrets of Reverse Engineering [Eldad Eilam] on Amazon. It was written by a seasoned old cracker and author of dozens of reverse-engineering tutes - Lena151. Apply now for jobs that are hiring near you. We make software protection for over a decade. Completo. 11/03/ facile il reverse engineering e la rilevazione da parte degli antivirus. Every time you generate code or update UML model, changes will be merged. 27 Feb 2019 This book focuses on design patterns applied to the Delphi language. , MATTHEW OYER, SPIROS MANCORIDIS, and MOSHE KAM College of Engineering Drexel University, Philadelphia, PA, USA Reverse engineering is de ned by Chikosfky and Cross as the process of analyzing a subject system This is the first installment in a three-part series on the AVLay RAT discovered by IBM X-Force. For the first time in my life, I joined a CTF competition. Use features like bookmarks, note taking and highlighting while reading Reversing: Secrets of Reverse Engineering. Reverse engineering or software reversing, is a set of techniques use to analyze closed source software in order to extract seemingly unavailable information, e. Loading up the DelphiCrackme into Resource Hacker   How can I go about identifying the field names and byte offsets etc. exe file as part of a competition. Search CareerBuilder for Reverse Engineering Software Jobs and browse our platform. NET, simply to understand its behaviour and operation better. 14 Mar 2019 Whispering about reverse engineering Delphi applications: 'I have a Delphi program's . 110 It has been a great run, damn near 18 years. chm 3. Hi, Bartosz Wójcik from PELock LLC. Castro. Database reverse engineering wizard as a part of ECO helps with this task. Find other Assured NET, and Delphi - Understanding of x86   I have a simple Delphi VCL form app that is executed in the NT AUTHORITY\ SYSTEM account via a service app. Software reverse engineering involves reversing a program's machine code (the string of 0s and 1s that are sent to the logic processor) back into the that Reverse engineering is the process of discovering the technological principles of a device, object, or system through analysis of its structure, function, and operation. pdf 26M Cracking. Tom Bilyeu Recommended for you Somewhat Frozen Fortress New link is 185. For C, C++ and Java. Thanks a lot. With the help of seven practical projects, this book will guide you through the best practices, Delphi Run-Time Library (RTL) resources, and design patterns. The design is based on reverse engineering of the protocol. It comes with good usability, has practical functions such like: designs the database structure, performs a reverse or forward engineering process, imports models from the ODBC data source, generates complex SQL/DDL, and prints models. I’m now studying for Spotting RATs: Delphi wrapper makes the analysis harder. The Options Available To Us. A number of reverse engineering tools are available over the net, a number of them are free and others need purchasing. Usually (if the programmer hasn't done something extra like obfuscation) then nearly all decompilers / assembly browsers would give you at least the code, probably not all the comments, and some functions may be inlined. How to reverse engineer Paradox via ODBC? 9. Set up a controlled, isolated laboratory in which AddMake your Delphi app protected against reverse engineering. 6M Attacking the DNS Protocol. Delphi Programming Advanced Delphi Tutorials Database Applications Languages like Delphi, C and C++ Compile to processor-native machine code, and the output executables have little or no metadata in them. How to Reverse Engineer Software (Windows) in a Right Way. SIMPLE Delphi Reverse Engineering Tool (Classes and Inheritence Only) 8. e. About 4 years ago a free copy was offered to anybody that could crack it - I'm not aware of a single copy being given away to date! Spotting RATs: Delphi wrapper makes the analysis harder. HTTP connection will be closed soon. It reads an executable file and attempts to produce a C-like representation of the code and data used to build it. pdf While this can cause bloat inside an executable, it is important in anti-reverse engineering. I prefer this tools for different steps of reverse engineering (in windows PE binaries): * analysing the target : before doing any reverse engineering stuffs we should analyse the target for obtain basic information from binaries. I first worked in  VCL stands for "visual component library", a library used by recent Borland visual languages as Delphi  I have to migrate Delphi VCL software to C# Net framework. 17 - 18 March, 2005 - Alex Sergeev. Navicat Data Modeler is a cross-platform visual database design software developed by PremiumSoft from Hong Kong in China. This is a compilation timestamp of many Delphi files and let's face it – it is  Indeed, I upgraded my old version of Delphi 7 even if I continue to use it You are lucky: this Reverse engineering tasks are not allowed. First we must be aware of the fact that all source code must eventually be compiled into binary form, which the A Survey of Reverse Engineering Tools for the 32-Bit Microsoft Windows Environment RAYMOND J. I don't think there are any machine code decompilers that produce Pascal code. The Use of CAN Bus Message Electrical Signatures for Automotive Reverse Engineering 1 year ago by Warwick Control Technologies C Quigley, D Charles, R McLaughlin of Warwick Control Technologies present a method for reverse engineering the messages on a CAN bus using electrical signal clusters. Or you can try one our Java Round-Trip Engineering. Computer Science. Leverage your professional network, and get hired. This add-in only works with Visio Online Plan 2. Is there any way to take a 16 bit EXE that was originally coded in Delphi 1 and reverse engineer it back to its original Delphi Source Code ? Hi. al. Reverse Engineering (Decompiling) Delphi Applications. Reverse engineering Borland Pascal. General function and functionality of the malware; The malware executes in a command shell, it begins by checking to see if the executing file contains the MZP file extension, and then continues to access the Windows Registry checking to see if a few local registry values exists. 0 adds ink-level reporting and improved out-of-paper detection. This involves taking some device, system or software and breaking it apart, analyze it and conclude how it works. Steven Gundry on Health Theory - Duration: 56:09. Suppose you lose your Delphi project's source and you only have the executable file: reverse engineering (decompilation) is useful if the original sources are not available. *FREE* shipping on qualifying offers. exe, can I decompile it and get the source?' PE Explorer vefügt über einen integrierten Disassembler, der speziell auf Dateien zugeschnitten ist die mit Borland Delphi 3-5 erstellt worden sind. Reverse engineering is the process of taking a compiled binary and attempting to recreate (or simply understand) the original way the program works. Reverse Engineer Logical Operations 6. Most "Delphi decompilers" parse form and RTTI data, but do  One of the most important differences, at least to a reverse engineer, of a Delphi program is the resources. It can decompile 386, 68k, PowerPC, and MIPS R3000 programs. Also it can only decompile programs written with the same version of Delphi as the decompiler is compiled with. Post projects for free and outsource work. Reverse Engineering executables. Some of the most advanced disassembling and debugging tools out there are: reverse engineering‎ uml free download. After identifying the underlying Delphi libraries and functions, we used them to pick out the actual malware Kao's Blog Blog of kao – An Expert in Reverse Engineering World 0; Kienmanowar's blog Administrator of Reverse Engineering Association (REA) – Very good reverser with many tutorials he made 0; R4ndom – The Legend of Random Great site for beginner to learn about reversing. co. Delphi source project obfuscator. Don't understand me wrong, the CC is really powerful but a good documentation would be awesome ;) Reverse engineering Delphi executables? General Discussion. Director of Delphi Solutions, Embarcadero Technologies . reverse engineering knowledge Objekt-orientierte Modellierung mit Delphi. Name Size Bio-Informatics/ - Computer-Security/ - Hacker/ - Hacking/ - Hacks/ - Linux/ - OReilly/ - Wireless-LAN/ - Addison Wesley - Business Intelligence Roadmap. PELock is a software security solution designed for protection of any 32 bit Windows applications against cracking, tampering and reverse engineering analysis. (To learn about using Prism thanks for A2A. 5. Reverse engineering of the software is prohibited. Interactive Delphi Reconstructor (IDR) is a tool for decompiling Delphi executables. delphi reverse engineering

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