![]() This information is stored in the file with the ID0 file name extension. ![]() In addition to storing the image of the loadable module, IDA Pro requires memory for information such as labels, function names, and comments. When it is necessary to load a page but the page buffer is full, IDA Pro searches the buffer to find the page that was modified first, flushes it to the disk, and loads the required page into the freed space. Modified cells are periodically flushed to the disk. IDA Pro holds part of the memory pages in random access memory. If the memory cell is modified, the entire virtual memory page is rewritten. When accessing an individual cell, the entire page containing this cell is loaded into the main memory (buffer). Mechanisms of working with the virtual memory used by IDA Pro are identical to the similar mechanisms used by the Windows operating system. Furthermore, this attribute specifies whether there are other objects in the string, such as comments, cross-references, or labels. In particular, this attribute specifies whether the given memory cell relates to an instruction or to the data (and, in the latter case, the type of this data item). For each address, the file stores a 32-bit characteristic: an 8-bit cell corresponding to the given address and a 24-bit attribute defining various properties of this cell. This feature makes IDA Pro close to an exclusive debugger. Thus, it becomes possible to ensure that the module being investigated is identical to the module executed by the operating system. This image is identical to the image loaded into the 32-bit flat memory model of the Windows operating system. The file with the same name as the loaded executable module and with the ID1 file name extension is used for loading the image of that executable module. After you unload the previously-loaded module (using the File | Close menu commands), both files will disappear. These are auxiliary virtual memory files used by the IDA Pro debugger for storing intermediate data. These will be two auxiliary files with the ID0 and ID1 file name extensions. If you load some executable module into IDA Pro, two files will be created into the directory, from which you have loaded that module. All further sections will mainly relate to the GUI variant. This instrument is so elegant that its name makes you imagine someone like her.įirst, it is necessary to mention that the IDA Pro distribution set includes both console (idaw.exe) and graphical (idag.exe) variants of the program. ![]() IDA stands for Interactive Disassembler, although the About window displays a beautiful young lady. ![]()
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