Web Application Penetration Testing

Find exploitable weaknesses inside your web application.

ShabuShabu Security performs authorized web application penetration testing to identify weaknesses in authentication, authorization, user workflows, data handling and business logic before they can become practical attack paths.

Manual penetration testing Authentication testing Business logic testing Access control review
Web application assessment Core Security Review
Authorized
01 Authentication Login, recovery, session and identity boundaries.
02 Authorization Roles, permissions and cross-user access controls.
03 Application Logic Workflow abuse and unintended product behavior.
04 Impact Validation Controlled confirmation of realistic security impact.
Web application security

A web application is more than a collection of endpoints.

Modern applications combine authentication systems, user roles, dashboards, administrative functions, integrations, payments, data exports and business-specific workflows.

That makes security highly dependent on context. A feature may work exactly as designed while still creating a dangerous attack path when combined with another function or permission failure.

01

Understand user roles

Review what different users can access and how the application enforces those boundaries.

02

Review application logic

Identify workflows where legitimate functions can be used in unintended or unsafe combinations.

03

Test sensitive functions

Focus attention on actions that affect accounts, data, permissions or other high-impact product behavior.

04

Validate realistic impact

Confirm whether a weakness can become a meaningful attack path under controlled testing conditions.

What we test

Key security areas inside a modern web application.

The exact scope depends on the application, but these areas form the core of most web application penetration tests.

01 / AUTH

Authentication

Login processes, account recovery, multi-factor authentication, session creation and identity verification flows.

02 / ACL

Authorization

User roles, administrative privileges, cross-account access and restrictions around protected functions.

03 / DATA

Data Handling

Sensitive information, user-controlled data, exports, file processing and data exposure risks.

04 / LOGIC

Business Logic

Workflow rules, limits, sequence assumptions and unexpected combinations of valid user actions.

05 / INPUT

Input Processing

User-controlled fields, application parsing behavior, uploads and unsafe interpretation of supplied data.

06 / SESS

Session Security

Session lifecycle, logout behavior, token handling and controls around authenticated browser sessions.

07 / ADMIN

Administrative Functions

High-impact management interfaces, privileged workflows and controls intended only for trusted roles.

08 / INT

Integrations

Application connections, callbacks, external services and trust boundaries created by connected systems.

09 / CONFIG

Security Configuration

Application-level security settings, exposed features and configuration choices that increase attack surface.

Vulnerability categories

We look for weaknesses that can change what an attacker can do.

The objective is not to maximize the number of findings. The objective is to identify vulnerabilities that weaken meaningful security boundaries.

01

Broken Access Control

Failures that allow users to reach data or actions outside their intended permissions.

02

Authentication Weaknesses

Problems around login, recovery, session behavior or account protection.

03

Business Logic Flaws

Valid product functionality that can be combined or manipulated in unintended ways.

04

Injection Risks

Unsafe interpretation of user-controlled input within application processing.

05

Sensitive Data Exposure

Application behavior that reveals information to users who should not receive it.

06

Session Weaknesses

Security problems in session creation, invalidation or authenticated state handling.

07

Unsafe File Handling

Risk introduced through uploads, downloads, processing or insufficiently restricted file behavior.

08

Security Misconfiguration

Exposed application functionality or unsafe security settings that expand the attack surface.

Attack-path analysis

The real risk often appears between several application features.

Individual findings do not always explain how an application can actually be compromised. Our testing follows the relationships between users, permissions, workflows and sensitive actions.

This helps identify multi-step attack scenarios where several smaller weaknesses combine into a more serious security problem.

Assessment reasoning From feature to security impact
01
Map user roles Understand which actions should be available to each account type.
02
Identify sensitive workflows Locate areas where access, data or business value changes.
03
Test security boundaries Check whether those restrictions remain enforced under unexpected usage.
04
Validate impact Confirm what becomes accessible or controllable if the boundary fails.
05
Document root cause Explain what allowed the issue and how the control can be improved.
Security questions

The questions a manual web application test should answer.

The exact checks depend on the application and approved scope, but the assessment focuses on practical security boundaries.

Account & Permission Security

✓ Can one user reach another user’s protected resources?
✓ Are administrative actions correctly restricted?
✓ Do account recovery processes maintain expected security boundaries?
✓ Can role or tenant separation break under unusual application states?
✓ Are sensitive functions protected consistently across the application?

Application Logic & Data Security

✓ Can intended workflows be manipulated to produce unintended outcomes?
✓ Can application limits or process order be bypassed?
✓ Can sensitive information appear in places where it should not be visible?
✓ Do integrations or background workflows create unexpected trust paths?
✓ Can several low-level issues combine into a higher-impact attack chain?
Web penetration testing process

A controlled process from scope to remediation.

The assessment begins with an agreed test scope and progresses through application mapping, manual testing, impact validation and structured reporting.

01

Scope the application

Define domains, environments, test accounts, user roles, restricted actions and the authorized assessment window.

SCOPE / USERS / RULES
02

Map application behavior

Review application features, trust boundaries, sensitive functions and user workflows before deeper testing.

MAP / FLOWS / PERMISSIONS
03

Test and validate

Perform controlled manual security testing and confirm the realistic impact of important findings where appropriate.

TEST / VALIDATE / IMPACT
04

Report and retest

Receive prioritized technical findings, remediation guidance and optional verification after fixes are implemented.

REPORT / FIX / RETEST
What you receive

A report designed for security and engineering teams.

Each important finding is presented with enough context to understand the risk, identify the affected application component and plan remediation.

01

Executive Summary

A concise overview of the assessment and the most important security risks identified.

02

Technical Findings

Detailed descriptions of vulnerabilities and affected application functionality.

03

Impact Analysis

Context explaining what a realistic attacker could achieve if the weakness were exploited.

04

Supporting Evidence

Relevant evidence and reproduction information needed to understand validated findings.

05

Remediation Guidance

Practical recommendations focused on strengthening the underlying security control.

06

Retesting

Optional verification that previously identified issues have been properly remediated.

When to test

When a web application penetration test makes the most sense.

LAUNCH

Before launch

Test critical web functionality before exposing a new product to customers and public traffic.

RELEASE

After a major release

Review new features, workflows or permissions that materially change application behavior.

AUTH

After access changes

Reassess the application after major authentication, user-role or permission model changes.

REVIEW

Periodic assessment

Review mature applications as the product, user base and integration surface evolve.

Authorized testing

Web application testing with clear rules of engagement.

ShabuShabu Security performs penetration testing only within the authorized engagement scope. Production restrictions, test accounts, permitted systems and sensitive actions are agreed before testing starts.

Rules of engagement Controlled web security assessment
✓ Authorized domains and environments are documented.
✓ Test accounts and relevant application roles are defined.
✓ Production-impacting techniques can be restricted.
✓ Third-party systems outside the approved scope are excluded.
✓ Sensitive findings are communicated through controlled channels.
Start a web application assessment

Test your application before attackers find the weak boundary.

Tell us which web application needs testing, which environments are available and what user roles are in scope. We will structure the assessment around the real behavior of your product.