Delphi Decompiler Dede ›
Delphi Decompiler — DeDe: Overview, features, and usage
Delphi Decompiler (DeDe) is a long-standing tool for reverse-engineering executables produced by Borland/Embarcadero Delphi (and compatible) compilers. It helps recover readable Delphi-like source structures from compiled binaries, making it useful for analysis, debugging legacy apps, security research, and education. Below is a concise, complete primer covering what DeDe is, what it can and cannot do, how it works at a high level, how to use it, and legal/ethical considerations.
@dataclass class Component: """Represents a Delphi component/form control""" name: str component_type: ComponentType parent: Optional[str] properties: Dict[str, RTTIProperty] = field(default_factory=dict) events: List[EventHandler] = field(default_factory=list) children: List['Component'] = field(default_factory=list) delphi decompiler dede
Browse source code and modifications on SourceForge or dedicated reverse-engineering forums. DeDe - Download - Softpedia Delphi Decompiler — DeDe: Overview, features, and usage
This provides a solid foundation for a Delphi decompiler tool similar to DEDE. For production use, you'd need to add support for different Delphi versions (D2007, D2010, DXE, etc.), handle packed executables, and implement more sophisticated RTTI parsing. Click a form → right pane shows DFM text
No High-Level Source: You will not get original .pas source code back. The logic will always be in Assembly.
Load the Target: Open DeDe and use the File | Open menu to load a Delphi executable (.exe), DLL, or BPL.
What you can realistically expect
- Partial reconstruction: You’ll often get class names, field offsets, and method boundaries, plus readable snippets where RTTI survives.
- Pseudocode, not perfect source: Decompiled Pascal-like code will need cleanup; variable names are usually generic (e.g., eax_1 or local_4).
- Forms and resources: DFMs frequently survive intact and can be extracted or converted back into editable form descriptions.
- Manual effort required: Decompilation is an accelerator, not a replacement, for a human reverse-engineer.