Greyhats Welcome CTF 2025
9 challenges with 12 published solutions between them. The writeups for this event were found in public repositories. Each link is pinned to the commit it was read from.
Where these writeups liveUncategorised4
The upstream scoreboard did not say, so neither do we.
Blast From The Past
2 official solutionsAlso written up in: 0necloud/CTF-Writeups, 0necloud/CTF-Writeups
Rusty Vending Machine
2 official solutionsAlso written up in: 0necloud/CTF-Writeups, 0necloud/CTF-Writeups
Python Challenge
1 official solutionAlso written up in: 0necloud/CTF-Writeups
Ski Buddy
1 official solutionAlso written up in: 0necloud/CTF-Writeups
Forensics3
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
Dist Notsus.Exe
2 official solutionsAlso written up in: alsadio/CTF-Writeups, alsadio/CTF-Writeups
Dist Connection Issues
1 official solutionAlso written up in: alsadio/CTF-Writeups
Dist Layer Cake
1 official solutionAlso written up in: alsadio/CTF-Writeups
Reverse engineering1
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
Also written up in: hninsatphyusin/ctf-writeups-and-notes
OSINT1
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
Dist By The Banana Tree
1 official solutionAlso written up in: alsadio/CTF-Writeups