#fsop CTF challenges
10 CTF challenges using fsop from 9 CTFs (2018–2024), 10 with writeups. Mostly Misc (50%) and Pwn (50%).
Often combined with
#file-structure 3 #malloc-hook-overwrite 1 #mmap-threshold-overwrite 1 #heap 1 #double-free 1 #fastbin-dup 1 #stdout-vtable 1 #file-struct-exploit 1 #libc-leak 1 #tcache-poisoning 1 #use-after-free 1 #fastbin-attack 1 #off-by-one 1 #setcontext 1 #largebin-attack 1
Challenges
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| Challenge | CTF | Weight | Category | Has |
|---|---|---|---|---|
| success | Securinets 2021 Quals | 41.71 | Pwn | files wu 2 |
| nullptr | ALLES 2020 | – | Misc | files wu 2 |
| babyfile | SECCON 2022 Quals | 97.90 | Pwn | files wu 2 |
| refcnt | ASIS 2020 Finals | 64.97 | Misc | files wu 1 |
| duet | 0CTF 2020 Quals | – | Pwn | files wu 1 |
| speedpwn | SekaiCTF 2024 | 36.96 | Pwn | files wu 1 |
| lazynote | SECCON 2020 Quals | 65.77 | Misc | files wu 1 |
| house_of_tataru | N1CTF 2021 | 53.54 | Pwn | files wu 1 |
| butterfly | DarkCTF 2020 | 23.71 | Misc | files wu 1 |
| easiest | BCTF 2018 | – | Misc | files wu 1 |