10/30/2022 0 Comments Ida hide debugger![]() We're going to use these references to find each class and label them. If we select this function and list the references that use it (X), we can see it has 473 references. The first function at address 0x406De4 is typically the constructor. The third function at address 0x406dec seems to call "CloseHandle," so this is likely a destructor. Since the three functions in Figure 2 are related to the standard library, we can see they perform a few tasks if we look over them one-by-one. This address is what is referenced by classes that inherit "TObject." This represents the actual class definition in Delphi. This will then look like Figure 1 below, which represents our "TObject." If we cross-reference this (Ctrl+X) we can see that this string is referenced by an address right next to it at 0x401070. If we double-click the address or symbol for "_cls_System_TObject," IDA will then navigate to the the specified address. To start out, we'll use IDA-minsc to list all symbol names that reference "TObject." This is the same as using IDA's "Names" window (Shift+F4), but uses IDA-minsc's matching component to specify different keywords for filtering IDA's different windows. Once this is complete, the user may begin the reversing process.Īll Delphi applications will typically include a class called "TObject." This class can be inherited by a number of classes and we can utilize this to find "System.New," which is generally used as a constructor. During this process, the plugin will iterate through all of the comments available in the database, while updating an internal cache and showing its progress. The tag cache is utilized specifically for tagging and querying tags. Once IDA has finished its processing, the plugin will kick in and begin to build its tag cache. When first opening the "awp.exe" file in Atlantis Word Processor, IDA will begin to process it. Inside each of these modules are class definitions with static methods that are used as "namespaces" to group functions together that act on similar data or with similar semantics. There are various other modules available in this plugin, but the main feature is the two "contexts" that IDA-minsc started with. When writing this new plugin, we found that we could group the various components and functions used into separate modules, making it easier to recall and immediately reference them. However, the new modules were too generically named and required previous knowledge of the IDC scripting language. IDAPython quickly fixed this by implementing a number of higher-level functions. The modules used in IDA 6.95 were too complex for a user to familiarize themselves with. IDAPython is essentially a wrapper around the IDA SDK, which results in separate modules directly corresponding to the way in which the different components of IDA were implemented. All the capabilities described below can be found within the document linked to above, or by calling Python's `help()` function on the namespace or the module directly. IDA HIDE DEBUGGER HOW TOThis blog will outline how to quickly tag any objects that are constructed for querying, how to identify tokens belonging to the RTF parser and their attributes, and then how to deal with closures that reference variables defined in other functions. Below, we will demonstrate the capabilities of this plugin by reversing Atlantis Word Processor, a document creator coded in Borland Delphi. The plugin itself is hosted here with detailed documentation here. ![]() IDA HIDE DEBUGGER CODEThis, combined with the plugin's various components that automatically determine a function's parameters based on the user's current selection, allows the user to very quickly write code that can be used to mark and annotate the different parts of the database. This is done by introducing a few concepts that change the way most users develop Python, which allows the user to treat the parts that they are reversing as more of a dataset that can be used to query and annotate as they see fit. ![]() We believe that this plugin expedites the annotation process and allows the user to work more efficiently. This plugin aims to make it easier for people to reverse and annotate binaries. ![]() Every year, the company invites researchers to submit plugins that improve their products, and Talos determined that IDA-minsc would improve users' experience enough that it deserved consideration for this year's awards. Ali Rizvi-Santiago of Cisco Talos recently tied for second place in the IDA plugin contest with a plugin named " IDA-minsc." IDA is a multi-processor disassembler and debugger created by the company Hex-Rays and this year there were a total of four winners with nine submissions total. ![]()
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