Case study
DownUnderCTF: masked-squares flag checker
An official educational challenge investigation connects binary checks to equations and records an original-program validation.
Requirements and limitations
- Upstream case: public DownUnderCTF 2023 challenge, REA 4.1.0 and Ghidra 12.1.4 on Linux x64.
- Target hash and source revision are documented; author-reported execution was not repeated here.
About this entry
- Type
- Case study
- Category
- Official REA: case studies
- Relationship
- Official REA case study
- Targets
- Binary
Sources reviewed
The description was reviewed against primary sources. This does not establish runtime testing, security auditing or verified compatibility.