In order to meet this challenge, we developed a customized model, specifically designed to reduce incorrect data type identifications. Although the customized modeling performed by the PE Explorer Disassembler does increase processing time, the result is a dramatic reduction of incorrect opcode translations. We think you will agree that that the extra time needed to achieve this high level of accuracy is justly compensated for by the time saved when hand correcting the output.
After the compiler has been identified, the disassembler searches the target file for a relocation table. If a relocation table is found, the information is used to detect the absolute offsets to the various content items in the file for example: mov eax, offset LF46A, jmp LA49FE.
In turn, this information is used to form the Jumps list and the Rets list. The Jumps list stores the addresses to positively identified instructions and the Rets list stores the addresses to tentatively identified instructions.
These addresses are then arranged according to the degree of certainty regarding their identification. As the information from the Jumps list and the Rets list accumulates, the decoding process begins to emulate the execution of the code found within the target file.
When the primary branch of the decoding process finishes executing, the remaining information from the Jumps list and the Rets list is processed. Information accumulated in the Jumps list is evaluated first, followed by the information in the Rets list, until both lists are empty. If the repeated scanning option is selected, this step is repeated until the disassembler has resolved any outstanding references. The decoding process concludes by generating labels for any items that remain unidentified and setting the output positions for all of the various items found in the target file.
After all processing has been completed, the disassembler displays the resulting source code for the target file. This output can be manually edited or saved to disk for future reference. Unlike the various strings utilities that search and extract the text strings from a file, PE Explorer is much more accurate and detailed in extracting these strings out from specified memory locations instead of searching. When you are looking for leads in the form of text, the output of strings found in the executable gives you a good knowledge of what some of the functions and subroutines called by this binary are.
The Delphi VCL object model is designed in such a way that we think it will be possible to reproduce the original assembly language source code perfectly. Improve this answer. The article is still relevant to this day but I'd suggest cutter.
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Sign in to report this app to Microsoft. Report this app to Microsoft. But Dumpbin show Raw data, And it is very difficut to understand the raw data.
It look like machine level code. And i want to see the souce code from the dll or exe. You cannot disassemble a native dll to source code as you can in. The closest you can get is the assembly language. It is human readable language and not assembly language that can be fed directly to the CPU.
When you compile in. Only on run time is this code compiled based on hardware and software platforms and software dependencies installed thus achieving platform independence.
Result of this compilation is real assembly code that is fed to CPU and is not human readable. It is generally known that all CLI code can be reverse engineered to source code but it is not even necessary since as mentioned CLI is human readable. Real assembly executables on the other hand have to have compiler inserted debug symbols that allow tools to have insight in to what is happening with source code on real time but even then only if you already have source code.
And you never distribute debug version so unless you are reverse engineering your source this is most likely to be illegal I think and immoral since if it is to be available to public you can just ask for sources. You can observe CPU registers and memory directly without debug symbols but that is same as reading assembly and not easy.
Basically, for the same reason you cannot unscramble scrambled eggs. A lot of information, useful for humans but unnecessary for the CPU to execute machine code, is lost irretrievably during the compilation. Ref Sheng post: So dumpbin only show the raw data, Dumpbin simple read the machine code and show to us. But why it is showing those thinks. What ever it may be human cannot understand the raw data so that is not need. I will direct you to links that will enable you to understand how thing work more clearly if you ask me to.
Short answer not all data needed for complete understanding thus you will have to rely on faith that I am telling the truth :. Crating source from assembly machine code language converted in to alpha numeric symbols is extremely difficult since humans have limited ability to exactly memorize large amounts of similar data that they can not biologically rely to and it is needed in order to analyze the the data towards visualized goal recreating approximation of source code.
Working it out on paper might take a life time of human work and even in that case you can not increase speed by adding people unless at least one of them is capable of holding whole in memory. Having source code or documentation of compiler and compiler used to create dependencies is most likely essential for brute force approach with fast computers.
I just check the link which you given above post. I think the IDA tool is very good tool. It have lot of thing. I just gothorugh the site. They mentioned like this tools is very useful for virus and malware analyses. And it help to find the reason for application crash also. I will download and use the evalution version and let you know. But i don't think this tools shows the original code. I just check the screen shots. It only have the Hexa type of codes i think machine level code.
Bare in mind that all evolution of programming went in other way. At the beginning there were gears few thousands B. Then there were punch cards, pieces of paper with holes, then there was machine code, just numbers.
And then the assembly language. After that came higher level languages. Not even close to assembly. It is object oriented.
It is not even functional language, more than C that is used to write every O. Names given to those abstract terms are getting you confused here.
I am really trying to help you out here let me knew where you lost me if you are not following. It is time better spent than looking for software that converts from machine language to high level language.
Josh just assumed you understood previous posts. I can let you in on links that will describe certain technical details. Princeton vs Harvard architecture was an entry point for me but it might be too low and abstract. If you want to omit all those.
Both have advantages and disadvantages. So this is a help from us more no of developers to a. And if you work it out your self and get lost in a jungle let us knew to get you back on path, same goes for all of us, we all get lost. But you will have to cross the jungle your self. I agreed all above statement. But in C managed code everythink is availble and it give some layer for protect the applicaton which you mentioned like "you can fall without damage".
They know more core level process.
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