T-01
Static Application Security Analysis
Analyze Android application packages (APK/AAB), source code where available, application resources, configuration files, and compiled components to identify potential security weaknesses.
Services · Android Application VAPT
Android Application Penetration Testing
Your Android App May Look Secure. But What's Happening Behind the Screen?
At Bugquell, we identify critical Android application vulnerabilities through expert-led, manual penetration testing. From insecure data storage and authentication weaknesses to reverse engineering and API exploitation, we uncover hidden security risks that could compromise your application, users, and sensitive information.
Overview
What Is Android Application VAPT?
SAST
Static Analysis
APK/AAB, decompiled code, manifest and resources.
DAST
Dynamic Testing
Runtime behaviour, traffic and local data handling.
API
Backend APIs
Authentication, authorization and business logic.
Methodology informed by
OWASP MASTGOWASP MASVSManual-first testing
Tools we use
JADXApktoolMobSFBurp Suite ProfessionalFridaADB
Android Application Vulnerability Assessment and Penetration Testing (VAPT) is a comprehensive security assessment designed to identify, validate, and evaluate security vulnerabilities in Android mobile applications, their underlying components, and associated backend services.
Modern Android applications handle sensitive information, including personal data, authentication credentials, financial transactions, business records, and confidential communications. Weaknesses in application architecture, data storage, authentication mechanisms, or communication channels can expose users and organizations to significant security risks.
Unlike traditional web application assessments, Android penetration testing involves analyzing both the mobile application and its interactions with the Android operating system, device storage, external services, and backend APIs.
At Bugquell, our security researchers combine static application analysis, dynamic security testing, reverse engineering, and manual exploitation techniques to investigate vulnerabilities that automated security scanners may overlook.
Our assessments focus on understanding how an Android application stores information, manages authentication, communicates with backend services, enforces authorization, and protects sensitive functionality.
Coverage
What We Test
T-02
Dynamic Application Security Testing
Evaluate application behavior during execution to identify insecure runtime operations, sensitive information exposure, and vulnerabilities that become visible through real-world application interactions.
T-03
Authentication & Session Management
Assess login mechanisms, session tokens, password recovery, multi-factor authentication, token storage, session expiration, and authentication bypass vulnerabilities.
T-04
Authorization & Access Control
Identify insecure direct object references (IDOR), broken access controls, horizontal and vertical privilege escalation, and unauthorized access to sensitive application functionality.
T-05
Local Data Storage Security
Examine SharedPreferences, SQLite databases, application files, caches, logs, and other local storage mechanisms for insecure handling of sensitive information.
T-06
Network Communication Security
Assess HTTPS implementation, TLS configurations, certificate validation, certificate pinning, and potential exposure of sensitive information during network communication.
T-07
Reverse Engineering & Code Analysis
Analyze application binaries, decompiled code, hardcoded secrets, API endpoints, security-sensitive logic, and application configurations to identify weaknesses that could assist attackers.
T-08
Android Component Security
Evaluate exported activities, services, broadcast receivers, content providers, and inter-component communication for unauthorized access and insecure component exposure.
T-09
Deep Links & Intent Handling
Test Android deep links, app links, intents, and intent filters for insecure redirection, unauthorized actions, and manipulation of application workflows.
T-10
WebView Security
Assess embedded WebView implementations, JavaScript interfaces, URL handling, file access permissions, and potential injection vulnerabilities.
T-11
Cryptography & Key Management
Review encryption implementations, cryptographic algorithms, key storage, Android Keystore usage, and protection of sensitive application data.
T-12
Backend API Security
Evaluate the APIs used by Android applications for authentication, authorization, sensitive data exposure, business logic vulnerabilities, and insecure request handling.
Threats
Common Android Application Security Vulnerabilities
01Insecure Local Data Storage
Sensitive information may be stored in application files, databases, preferences, or caches without appropriate protection.
Impact · Exposure of authentication tokens, personal information, financial records, or other confidential data to attackers with access to the application's storage.
02Hardcoded Credentials & Secrets
Applications may contain embedded API keys, authentication credentials, encryption keys, or other sensitive values within compiled code or configuration files.
Impact · Unauthorized access to backend services, misuse of exposed credentials, and compromise of connected systems.
03Improper Certificate Validation
Weak TLS certificate validation or insecure network configurations may expose application communications to interception or manipulation.
Impact · Exposure of sensitive information, session compromise, and unauthorized modification of transmitted data.
04Broken Authentication & Session Management
Weaknesses in authentication, token handling, or session management may allow unauthorized access to user accounts.
Impact · Account takeover, session hijacking, and unauthorized access to protected functionality.
05Broken Access Control & IDOR
Backend APIs may fail to verify whether users are authorized to access specific resources or perform restricted operations.
Impact · Unauthorized access to other users' data, privilege escalation, and modification of protected records.
06Insecure Exported Android Components
Improperly protected Android activities, services, broadcast receivers, or content providers may be accessible to unauthorized applications.
Impact · Unauthorized actions, sensitive data exposure, and abuse of application functionality.
07Insecure Deep Link Handling
Improper validation of deep links and intent parameters may allow attackers to manipulate application navigation or invoke sensitive functionality.
Impact · Unauthorized operations, phishing opportunities, and exposure of application data.
08WebView Security Vulnerabilities
Insecure WebView configurations or JavaScript interfaces may expose application functionality to untrusted web content.
Impact · JavaScript injection, unauthorized access to native functionality, and exposure of sensitive information.
09Weak Cryptographic Implementation
Insecure encryption algorithms, hardcoded keys, or improper cryptographic operations may weaken the protection of sensitive information.
Impact · Unauthorized data recovery, disclosure of confidential information, and compromised data integrity.
10Client-Side Security Control Bypass
Security restrictions implemented exclusively within the Android application may be bypassed through application modification or runtime manipulation.
Impact · Unauthorized functionality, bypassed business restrictions, and abuse of backend operations when server-side validation is insufficient.
Methodology
Our Android Application Penetration Testing Methodology
STEP 1
Scope & Application Architecture Review
We begin by understanding the Android application's functionality, architecture, authentication mechanisms, backend integrations, user roles, and business requirements.
Our team establishes the authorized testing scope, supported Android versions, testing environments, and rules of engagement before the assessment begins.
STEP 2
Static Application Security Analysis
Our security researchers analyze the Android application package using tools such as JADX, Apktool, and MobSF, where appropriate.
We examine decompiled application code, AndroidManifest.xml, application permissions, exported components, hardcoded credentials, API endpoints, cryptographic implementations, and security-sensitive configurations.
This analysis helps identify potential vulnerabilities and areas requiring deeper manual investigation.
STEP 3
Dynamic Application Security Testing
We execute the application in an authorized Android testing environment and analyze its runtime behavior.
Using tools such as Burp Suite Professional, Frida, and ADB, where appropriate, we inspect application traffic, investigate runtime security controls, analyze local data handling, and evaluate application behavior under different conditions.
STEP 4
Authentication, Authorization & API Security Testing
We manually test authentication workflows, session management, user permissions, and backend API interactions.
Our researchers compare requests between different user accounts, roles, and organizations to identify IDOR, BOLA, privilege escalation, authentication bypass, and business logic vulnerabilities.
We also investigate whether sensitive functionality relies on client-side restrictions without sufficient server-side enforcement.
STEP 5
Reverse Engineering & Advanced Security Testing
We investigate application logic, sensitive code paths, cryptographic operations, deep links, exported components, and WebView functionality.
Where permitted, we use controlled application instrumentation and reverse engineering techniques to understand security controls and determine whether identified weaknesses can be exploited.
We also examine whether multiple vulnerabilities can be chained to demonstrate greater security impact.
STEP 6
Vulnerability Validation & Impact Analysis
Potential vulnerabilities are manually validated through controlled testing to determine exploitability, affected functionality, and realistic business impact.
We evaluate risks involving sensitive data exposure, unauthorized access, application manipulation, and backend service compromise while minimizing disruption.
STEP 7
Detailed Security Reporting
We provide a comprehensive Android application security assessment report documenting validated vulnerabilities, severity ratings, reproduction steps, technical evidence, business impact, and actionable remediation recommendations.
STEP 8
Remediation Support & Retesting
We provide practical guidance to help development teams understand and resolve identified security weaknesses.
Where included in the engagement, we retest previously identified vulnerabilities to verify whether implemented security fixes are effective.
Deliverables
What You Receive
D-01
Executive Security Summary
A clear, business-friendly overview of the Android application security assessment, key findings, potential risks, and recommended remediation priorities.
D-02
Detailed Technical Vulnerability Report
Comprehensive documentation of validated vulnerabilities, affected application components, severity classifications, and technical explanations.
D-03
Proof-of-Concept Evidence
Relevant screenshots, application behavior observations, HTTP requests and responses, reproduction steps, and supporting technical evidence.
D-04
Risk & Business Impact Assessment
An evaluation of how identified vulnerabilities could affect user privacy, sensitive information, application integrity, and business operations.
D-05
Actionable Remediation Recommendations
Practical recommendations to help developers address vulnerabilities in application code, Android components, authentication mechanisms, and backend services.
D-06
Retesting & Verification Results
Documentation of remediation verification where retesting is included in the agreed assessment.
Why us
Why Choose Bugquell?
W-01
Manual-First Mobile Application Testing
We prioritize hands-on security assessments to identify vulnerabilities that automated tools may overlook, particularly those involving application logic, authorization, and runtime behavior.
W-02
Static & Dynamic Security Expertise
Our testing combines application package analysis, reverse engineering, runtime instrumentation, and manual validation to assess Android applications from multiple perspectives.
W-03
Specialized Authentication & Authorization Testing
Our security researchers focus on identifying IDOR, BOLA, privilege escalation, authentication weaknesses, and business logic vulnerabilities across mobile applications and their backend APIs.
W-04
Real-World Attack Scenarios
We investigate how attackers might manipulate application components, abuse backend functionality, or combine security weaknesses to demonstrate realistic impact.
W-05
Clear & Actionable Reporting
Our reports explain identified vulnerabilities, technical evidence, business impact, and recommended fixes in a format understandable to both technical and non-technical stakeholders.
W-06
ISO/IEC 27001:2022 Certified
Bugquell operates an ISO/IEC 27001:2022-certified information security management system, demonstrating our commitment to structured information security practices.
Ready to scope your Android app?
Request a Security Assessment →FAQ
Frequently Asked Questions
Q01What is Android Application VAPT?+
Android Application VAPT is a security assessment that evaluates Android application code, configurations, runtime behavior, data storage, authentication, authorization, and backend communications to identify vulnerabilities and assess their potential impact.
Q02What is the difference between static and dynamic Android application security testing?+
Static analysis examines application code, binaries, configurations, and resources without requiring the application to execute.
Dynamic analysis evaluates the application's behavior during execution, including network communication, runtime operations, authentication workflows, and interactions with the Android operating system.
Combining both approaches provides broader visibility into potential security weaknesses.
Q03Do you need the Android APK or source code for testing?+
An APK and appropriate test accounts are typically sufficient to begin a black-box or gray-box assessment. Source code, an AAB, API documentation, and additional application details may support deeper analysis depending on the engagement.
Q04Do you test Android applications without source code?+
Yes. We can perform black-box and gray-box Android application security testing using application binaries, reverse engineering, dynamic analysis, and manual penetration testing techniques.
Q05Do you test backend APIs used by Android applications?+
Yes. Where included in the agreed scope, we assess backend API authentication, authorization, sensitive data handling, and business logic vulnerabilities.
Q06Can Android applications be vulnerable even when they use HTTPS?+
Yes. HTTPS protects data in transit when implemented correctly, but it does not prevent vulnerabilities such as broken authorization, insecure local storage, authentication bypass, exposed credentials, or business logic flaws.
Q07Do you perform manual or automated Android application security testing?+
Bugquell follows a manual-first testing approach. Tools such as JADX, Apktool, MobSF, Burp Suite Professional, Frida, and ADB support application analysis and testing, while our security researchers manually investigate and validate findings.
Q08How long does Android application penetration testing take?+
The assessment duration depends on application complexity, number of features, authentication mechanisms, user roles, backend integrations, and agreed testing scope.
We provide an estimated timeline after reviewing the application and assessment requirements.
Q09Which security standards do you follow for Android testing?+
Our Android application testing methodology is informed by the OWASP Mobile Application Security Testing Guide (MASTG), OWASP Mobile Application Security Verification Standard (MASVS), and relevant mobile penetration testing practices.
Attack surface: unknown
Your Android App Deserves More Than a Basic Security Scan.
Protect your Android application, sensitive user information, and backend services with expert-led penetration testing from Bugquell. Uncover hidden vulnerabilities, strengthen security controls, and reduce exposure to real-world mobile security threats.