Structure Creator Plugin for IDA Pro

Overview

The Structure Creator Plugin is a powerful utility for IDA Pro that enables users to create and edit data structures directly within the IDA Pro interface. Developed by Cynic, this plugin streamlines the process of structure manipulation with an intuitive form-based interface.

Features

• Create new structures with a user-friendly form interface
• Edit existing structures by selecting them in the disassembly view
• Support for multiple structure definitions in a single input
• Automatic semicolon handling for structure fields
• Comment removal functionality
• Intelligent structure parsing and validation
• Support for complex nested structures

Hotkey

The plugin is accessible via the hotkey combination: Ctrl-Alt-S

Technical Details

Core Components

1. StructureCreatorFormClass: Handles the UI form for structure input
2. Type Information Processing:
   • get_tid(): Retrieves type information at a specific address
   • get_struc(): Obtains structure information from type ID
   • remove_comments(): Cleans up structure definitions by removing comments
   • process_structure_definition(): Ensures proper syntax with semicolons
   • split_multiple_structures(): Handles multiple structure definitions

Processing Flow

1. Captures current cursor position
2. Checks for existing structure at cursor location
3. Displays input form with current structure (if any)
4. Processes user input:
   • Removes comments
   • Adds necessary semicolons
   • Splits multiple structures
   • Validates and creates/updates structures

Usage

1. Position cursor on an existing structure (optional)
2. Press Ctrl-Alt-S to open the Structure Creator form
3. Enter or modify structure definition
4. Submit to create/update the structure

Installation:

• Place the plugin file in IDA Pro's plugins directory

Example Structure Definition

struct example_struct {
    int field1;
    char field2[32];
    void* ptr_field;
};