Legacy Architecture & Systems Discovery

Software Reverse Engineering Services

Understand Your Legacy System Before You Replace It

Years of development, undocumented changes and developer turnover can make critical applications difficult to understand. SCALEDE analyzes existing systems to reconstruct their architecture, business rules, database relationships, integrations and technical dependencies.

Software reverse engineering and architectural reconstruction
Core Engineering Philosophy

Your Legacy System Contains Years of Business Knowledge.

We help uncover that knowledge, document it, protect it and move it forward. Rather than gambling on an expensive, high-risk total rewrite from scratch, reverse engineering gives you complete clarity into what your system actually does.

Reconstruction Lifecycle

From Black Box to Actionable Modernization Roadmap

EXISTING LEGACY SYSTEM
FoxPro, VB6, .NET, Access
DISCOVERY
Scope & Artifact Inventory
CODE & DB ANALYSIS
Schemas, SPs & Logic
BUSINESS LOGIC MAPPING
Workflows & Calculations
TECHNICAL DOCUMENTATION
Architecture & Data Dict
MODERNIZATION ROADMAP
Keep, Refactor, Migrate
Overcoming Legacy Uncertainty

Problems Reverse Engineering Solves

When systems evolve over 10 to 20 years, undocumented logic and technical debt make upgrades feel impossible. We eliminate that risk.

Missing Documentation

Reconstruct technical and functional documentation from existing applications where specs were lost or never written.

Original Developer Unavailable

Understand systems where the original development team is no longer available, retired, or has left the organization.

Unknown Business Logic

Identify business rules embedded inside source code, forms, reports, stored procedures, DBF triggers and legacy databases.

Complex Database Structures

Map tables, entity relationships, stored procedures, DBF files, indexing bottlenecks and hidden data dependencies.

Undocumented Integrations

Identify third-party APIs, batch file exchanges, scheduled scripts, external service hooks and system dependencies.

Difficult-to-Maintain Code

Understand tightly coupled, spaghetti and poorly structured applications thoroughly before attempting modifications.

Vendor-Locked Applications

Assess custom or proprietary systems where original vendors are unresponsive or migration pathways are clouded.

Migration Planning

Determine with surgical clarity what should be retained, rewritten, replaced, refactored or migrated to modern cloud stacks.

Comprehensive Output

What We Can Reconstruct

Our engineering audits produce rigorous, production-grade documentation and blueprints that empower your technical decision-makers.

Application Architecture
Module Map
Database Schema
Entity Relationships
Business Rules
Application Workflows
Source Code Dependencies
External Integrations
API Dependencies
File Interfaces & Formats
Stored Procedures & Triggers
Reports & Calculations
User Roles & Permissions
Security Logic & Auth
Data Flow Architecture
Technical Documentation
Migration Requirements Spec
Assessment Scenarios

Source Code Available vs. No Source Code

We tailor our reverse engineering methodology depending on what assets are available in your organization.

Scenario A

Source Code Available

When code repositories, project files, or source folders exist, SCALEDE conducts in-depth static and architectural code analysis:

  • Source code: VB6 forms (.frm, .bas, .cls), VB.NET, .NET Framework, WinForms, WPF, FoxPro PRG/SCX, dBase, xBase, Classic ASP, Delphi units, COBOL copybooks, AngularJS, Legacy JavaScript (ES5).
  • Forms & UIs: User input validations, field constraints, event handlers and layout dependencies.
  • Modules & Classes: Object graphs, business calculation libraries, helper classes and COM dependencies.
  • Database & Queries: Embedded SQL, stored procedures, table triggers, DBF file access logic.
  • Configuration: Connection strings, registry settings, INI files, environment parameters.
  • Reports & Integrations: Crystal Reports, SSRS, third-party DLL wrappers, file export procedures.
  • Ongoing Stability: Foundation for long-term Legacy Support and maintenance retainers.
Scenario B

Source Code Missing or Incomplete

Where legally authorized and technically feasible, SCALEDE can analyze live application behavior and data artifacts:

  • Application behavior: Black-box interaction analysis, user workflow step recording, state transitions.
  • Database structures: Deep schema reflection on live SQL Server, MySQL, Access MDB, or DBF tables.
  • File formats: Proprietary data formats, binary flat files, export outputs and XML/JSON schemas.
  • Input/output behavior: Network trace inspection, payload inspection, API requests and responses.
  • Reports & User workflows: Documenting generated invoices, audit trails, and transactional summaries.
  • Existing binaries & interfaces: Inspecting executable entry points, COM interfaces, and exposed OS calls.
Strict Compliance & Authorized Software Policy:
SCALEDE provides reverse engineering services exclusively for client-owned, proprietary, or contractually authorized software systems to facilitate documentation, platform modernization, data recovery, business continuity, and system interoperability. We strictly operate under comprehensive mutual Non-Disclosure Agreements (NDAs). We do NOT provide services to bypass copyright licensing, Digital Rights Management (DRM), commercial anti-tamper mechanisms, or unauthorized security controls.
Post-Analysis Engineering

Software Re-Engineering

Once reverse engineering reveals how your legacy system functions, SCALEDE can restructure, optimize and modernize the application while strictly preserving your critical business functionality.

Architecture: Monolith to modular & REST APIs
Code Structure: Clean code, DDD, automated tests
Maintainability: Modern frameworks (.NET 8/9, Laravel)
Performance: Sub-second queries & Redis caching
Security: OAuth2, OWASP compliance, encrypted data
User Interface: Modern responsive web UIs (React, Vue)
Continuous Transformation

Engineering Evolution Model

LEGACY APPLICATION (VFP / VB6 / ASP / Monolith)
↓ ANALYZE & RECONSTRUCT
REFACTOR / REBUILD / MIGRATE
↓ DEPLOY & SCALE
MODERN APPLICATION (.NET Core / Laravel / Cloud)
Confidential Technical Review

Request a Legacy System Assessment

Share your current legacy environment and challenges. Our senior engineering leads will evaluate your architecture, confirm feasibility under strict NDA, and provide an initial reconstruction estimate.

We strictly sign mutual NDAs prior to any code or database inspection. All intellectual property remains 100% yours.
Hire Developers Start a Project