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Exercises

Exercise Avg. Time Difficulty Solved by Tier
API 13
This exercise covers a complex filter bypass in API.
 < 1 Hr. hard 707 PRO
API 14
This exercise covers how to exploit a leaked encrypted password with an API.
 < 1 Hr. medium 739 PRO
API 15
This exercise covers how to exploit a leaked encrypted password with an API.
 < 1 Hr. hard 649 PRO
Java Code Review 04
This challenge covers the review of a simple codebase in Java
 < 1 Hr. hard 238 PRO
Java Code Review 05
This challenge covers the review of a simple codebase in Java
 < 1 Hr. hard 241 PRO
Java Code Review 06
This challenge covers the review of a simple codebase in Java
 < 1 Hr. hard 235 PRO
API 10
This exercise covers a common filter bypass in API.
 < 1 Hr. medium 900 PRO
API 11
This exercise covers a common filter bypass in API.
 < 1 Hr. medium 830 PRO
API 12
This exercise covers a common filter bypass in API.
 < 1 Hr. medium 789 PRO
Java Code Review 01
This challenge covers the review of a simple codebase in Java
 < 1 Hr. hard 296 PRO
Java Code Review 02
This challenge covers the review of a simple codebase in Java
 < 1 Hr. hard 294 PRO
Java Code Review 03
This challenge covers the review of a simple codebase in Java
 < 1 Hr. hard 269 PRO
CVE-2023-28XX9
This challenge covers the review of a CVE in a Golang codebase and its patch
 1-2 Hr. hard 114 PRO
CVE-2024-x730x
This challenge covers the review of a snippet of code written in Golang.
 < 1 Hr. hard 133 PRO
JSON Web Token XV: CVE-2022-39227 JWT
This exercise covers the exploitation of polyglot token against python_jwt (CVE-2022-39227)
 < 1 Hr. hard 46 PRO
Python Code Review 06
This challenge covers the review of a simple codebase in Python
 -- hard 177 PRO
Python Code Review 07
This challenge covers the review of a simple codebase in Python
 < 1 Hr. hard 171 PRO
CVE-2009-387X
This challenge covers the review of a CVE in a Java codebase and its patch
 < 1 Hr. hard 321 PRO
CVE-2023-5143X
This challenge covers the review of a CVE in a Java codebase and its patch
 1-2 Hr. hard 280 PRO
CVE-2023-X48X9
This challenge covers the review of a CVE in a Java codebase and its patch
 < 1 Hr. easy 199 PRO
Python Code Review 04
This challenge covers the review of a simple codebase in Python
 -- hard 224 PRO
Python Code Review 01
This challenge covers the review of a simple codebase in Python
 < 1 Hr. hard 295 PRO
Python Code Review 02
This challenge covers the review of a simple codebase in Python
 -- hard 248 PRO
Python Code Review 03
This challenge covers the review of a simple codebase in Python
 < 1 Hr. hard 231 PRO
Python Code Review 05
This challenge covers the review of a simple codebase in Python
 -- hard 176 PRO
Python Code Review 09
This challenge covers the review of a simple codebase in Python
 -- hard 177 PRO
CVE-2022-4x13x
This challenge covers the review of a CVE in a Java codebase and its patch
 < 1 Hr. easy 173 PRO
CVE-2023-46XX2
This challenge covers the review of a CVE in a Java codebase and its patch
 < 1 Hr. easy 180 PRO
GHSA-95XX
This challenge covers the review of a CVE in a Java codebase and its patch
 < 1 Hr. easy 155 PRO
Java Serialize 06
This exercise is one of our challenges to help you learn Java Serialisation exploitation
 2-4 Hr. hard 64 PRO
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Showing 181–210 of 753 exercises