FooBar CTF 2021
32 challenges with 47 published community solutions between them. Solution links go to CTFtime’s task page, which aggregates every writeup for a challenge - individual blog posts rot, the aggregator does not.
Full task list on CTFtimeUncategorised18
The upstream scoreboard did not say, so neither do we.
Template
3 official solutionsAlso written up in: Polymero/ctf-writeups, Polymero/ctf-writeups, Polymero/ctf-writeups
Intern
2 official solutionsAlso written up in: mendung-10-6/ctf-writeups, Polymero/ctf-writeups
Ass Dec
1 official solutionAlso written up in: Polymero/ctf-writeups
Assignment
1 official solutionAlso written up in: Polymero/ctf-writeups
Hill Kill
1 official solutionAlso written up in: Polymero/ctf-writeups
Hillpwn
1 official solutionAlso written up in: Polymero/ctf-writeups
Lost N
1 official solutionAlso written up in: Polymero/ctf-writeups
Lost N checkpoint
1 official solutionAlso written up in: Polymero/ctf-writeups
Pascal Pailler
1 official solutionAlso written up in: Polymero/ctf-writeups
Pascal Pailler checkpoint
1 official solutionAlso written up in: Polymero/ctf-writeups
Pascal s Chemistry Lab
1 official solutionAlso written up in: Polymero/ctf-writeups
Profezzor Revenge checkpoint
1 official solutionAlso written up in: Polymero/ctf-writeups
QR LSB Bits
1 official solutionAlso written up in: Polymero/ctf-writeups
QR LSB Bits checkpoint
1 official solutionAlso written up in: Polymero/ctf-writeups
Random Checker
1 official solutionAlso written up in: Polymero/ctf-writeups
Short pad Attack (LEAK INFO)
1 official solutionAlso written up in: Polymero/ctf-writeups
Short pad Attack (LEAK INFO) checkpoint
1 official solutionAlso written up in: Polymero/ctf-writeups
Untitled
1 official solutionAlso written up in: Polymero/ctf-writeups
Misc9
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Also written up in: Kasimir123/CTFWriteUps, beatbybit.net
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Also written up in: Polymero/ctf-writeups, Polymero/ctf-writeups
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Also written up in: Polymero/ctf-writeups
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Numerical Computing
1 writeupAlso written up in: Kasimir123/CTFWriteUps
- engineering
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Binary exploitation3
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
Chall
2 official solutionsAlso written up in: acdwas/ctf, acdwas/ctf
- bof
- pwn
Same technique in picoCTF: lockdown-horses, Guessing Game 1, Bizz Fuzz
- rop
- pwn
Same technique in picoCTF: lockdown-horses, Guessing Game 1, vr-school
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- reverse
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200
- reverse
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200