THICK CLIENT PENTESTING CHECKLIST

OWASP Based Checklist 🌟🌟

80+ Test Cases 🚀🚀

Notion link: https://hariprasaanth.notion.site/THICK-CLIENT-PENTESTING-CHECKLIST-35c6803f26eb4c9d89ba7f5fdc901fb0

• INFORMATION GATHERING

  Information Gathering

  • Find out the application architecture (two-tier or three-tier)
  • Find out the technologies used (languages and frameworks)
  • Identify network communication
  • Observe the application process
  • Observe each functionality and behavior of the application
  • Identify all the entry points
  • Analyze the security mechanism (authorization and authentication)

  Tools Used

  • CFF Explorer
  • Sysinternals Suite
  • Wireshark
  • PEid
  • Detect It Easy (DIE)
  • Strings

• GUI TESTING

  Test For GUI Object Permission

  • Display hidden form object
  • Try to activate disabled functionalities
  • Try to uncover the masked password

  Test GUI Content

  • Look for sensitive information

  Test For GUI Logic

  • Try for access control and injection-based vulnerabilities
  • Bypass controls by utilizing intended GUI functionality
  • Check improper error handling
  • Check weak input sanitization
  • Try privilege escalation (unlocking admin features to normal users)
  • Try payment manipulation

  Tools Used

  • UISpy
  • Winspy++
  • Window Detective
  • Snoop WPF

• FILE TESTING

  Test For Files Permission

  • Check permission for each and every file and folder

  Test For File Continuity

  • Check strong naming
  • Authenticate code signing

  Test For File Content Debugging

  • Look for sensitive information on the file system (symbols, sensitive data, passwords, configurations)
  • Look for sensitive information on the config file
  • Look for Hardcoded encryption data
  • Look for Clear text storage of sensitive data
  • Look for side-channel data leakage
  • Look for unreliable log

  Test For File And Content Manipulation

  • Try framework backdooring
  • Try DLL preloading
  • Perform Race condition check
  • Test for Files and content replacement
  • Test for Client-side protection bypass using reverse engineering

  Test For Function Exported

  • Try to find the exported functions
  • Try to use the exported functions without authentication

  Test For Public Methods

  • Make a wrapper to gain access to public methods without authentication

  Test For Decompile And Application Rebuild

  • Try to recover the original source code, passwords, keys
  • Try to decompile the application
  • Try to rebuild the application
  • Try to patch the application

  Test For Decryption And DE obfuscation

  • Try to recover original source code
  • Try to retrieve passwords and keys
  • Test for lack of obfuscation

  Test For Disassemble and Reassemble

  • Try to build a patched assembly

  Tools Used

  • Strings
  • dnSpy
  • Procmon
  • Process Explorer
  • Process Hacker

• REGISTRY TESTING

  Test For Registry Permissions

  • Check read access to the registry keys
  • Check to write access to the registry keys

  Test For Registry Contents

  • Inspect the registry contents
  • Check for sensitive info stored on the registry
  • Compare the registry before and after executing the application

  Test For Registry Manipulation

  • Try for registry manipulation
  • Try to bypass authentication by registry manipulation
  • Try to bypass authorization by registry manipulation

  Tools Used

  • Regshot
  • Procmon
  • Accessenum

• NETWORK TESTING

  Test For Network

  • Check for sensitive data in transit
  • Try to bypass firewall rules
  • Try to manipulate network traffic

  Tools Used

  • Wireshark
  • TCPview

• ASSEMBLY TESTING

  Test For Assembly

  • Verify Address Space Layout Randomization (ASLR)
  • Verify SafeSEH
  • Verify Data Execution Prevention (DEP)
  • Verify strong naming
  • Verify ControlFlowGuard
  • Verify HighentropyVA

  Tools Used

  • PESecurity

• MEMORY TESTING

  Test For Memory Content

  • Check for sensitive data stored in memory

  Test For Memory Manipulation

  • Try for memory manipulation
  • Try to bypass authentication by memory manipulation
  • Try to bypass authorization by memory manipulation

  Test For Run Time Manipulation

  • Try to analyze the dump file
  • Check for process replacement
  • Check for modifying assembly in the memory
  • Try to debug the application
  • Try to identify dangerous functions
  • Use breakpoints to test each and every functionality

  Tools Used

  • Process Hacker
  • HxD
  • Strings

• TRAFFIC TESTING

  Test For Traffic

  • Analyze the flow of network traffic
  • Try to find sensitive data in transit

  Tools Used

  • Echo Mirage
  • MITM Relay
  • Burp Suite

• COMMON VULNERABILITIES TESTING

  Test For Common Vulnerabilities

  • Try to decompile the application
  • Try for reverse engineering
  • Try to test with OWASP WEB Top 10
  • Try to test with OWASP API Top 10
  • Test for DLL Hijacking
  • Test for signature checks (Use Sigcheck)
  • Test for binary analysis (Use Binscope)
  • Test for business logic errors
  • Test for TCP/UDP attacks
  • Test with automated scanning tools (Use Visual Code Grepper - VCG)

Shaped by: Hariprasaanth R

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