EHAX CTF 2025
11 challenges with 18 published solutions between them. No writeups were ever filed against this event's listing, so its solutions were found in public repositories instead. Each link is pinned to the commit it was read from.
The event listingBinary exploitation5
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
Fantastic Doom
3 official solutionsAlso written up in: rerrorctf/writeups, OceanTran999/CTF-writeups, nhh9905/CTF
Also written up in: rerrorctf/writeups, rerrorctf/writeups
Submit
2 official solutionsAlso written up in: OceanTran999/CTF-writeups, OceanTran999/CTF-writeups
Cash Demo
1 official solutionAlso written up in: OceanTran999/CTF-writeups
Cash Memo
1 official solutionAlso written up in: rerrorctf/writeups
Uncategorised4
The upstream scoreboard did not say, so neither do we.
Also written up in: thmai11/writeups, thmai11/writeups, thmai11/writeups
Also written up in: devanshupathak9/ctf-writeups
Also written up in: nhh9905/CTF
Tracks
1 official solutionAlso written up in: UchaCTF/WriteUps
Web1
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
Serialize
2 official solutionsAlso written up in: V1rg1lee/writeups, V1rg1lee/writeups
OSINT1
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
Three.Little.Clues
1 official solutionAlso written up in: sajjadium/ctf-archives