Hacker's Playground 2021
31 challenges with 66 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 CTFtimeUncategorised25
The upstream scoreboard did not say, so neither do we.
ADBaby
3 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
Also written up in: mito753/CTF, mito753/CTF, mito753/CTF
Memo01
3 official solutionsAlso written up in: mito753/CTF, mito753/CTF, mito753/CTF
Memory
3 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
MenInBlackHats
3 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
Poxe Center
3 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
Xero Trust
3 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
AuthCode
2 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
Exchange
2 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
L0st Ark
2 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
L0st Ark2
2 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
License
2 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
Mars Rover
2 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
Remains
2 official solutionsAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
BOF 101
1 official solutionAlso written up in: mito753/CTF
BOF 102
1 official solutionAlso written up in: mito753/CTF
BombDefuse
1 official solutionAlso written up in: SSTF-Office/SamsungCTF
Claim
1 official solutionAlso written up in: SSTF-Office/SamsungCTF
Config
1 official solutionAlso written up in: SSTF-Office/SamsungCTF
DecryptTLS
1 official solutionAlso written up in: SSTF-Office/SamsungCTF
LogicOrDie
1 official solutionAlso written up in: SSTF-Office/SamsungCTF
LostArk2
1 official solutionAlso written up in: mito753/CTF
Secure Enough
1 official solutionAlso written up in: SSTF-Office/SamsungCTF
Sendmsg
1 official solutionAlso written up in: SSTF-Office/SamsungCTF
Also written up in: SSTF-Office/SamsungCTF
Misc4
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: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Cyberpunk 2021
1 writeupAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
EchoFrag
1 writeupAlso written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
LostArk
1 writeupAlso written up in: mito753/CTF
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Web1
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
Also written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
- web
- pwn
Same technique in picoCTF: Live Art, secure-email-service, No FA
Binary exploitation1
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
Also written up in: SSTF-Office/SamsungCTF, SSTF-Office/SamsungCTF
- binary
- pwn
Same technique in picoCTF: lockdown-horses, Guessing Game 1, Bizz Fuzz