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zer0pts CTF 2021 Writeups

The tasks and solvers are available here!

Challenge Author Estimated Difficulty Solves Link to Writeup
Not Beginner's Stack ptr-yudai warmup 161 https://hackmd.io/@ptr-yudai/HJJ_HUeQd
stopwatch ptr-yudai easy 22 https://hackmd.io/@ptr-yudai/rJDR0DxmO
OneShot ptr-yudai easy-medium 23 https://hackmd.io/@ptr-yudai/rJgvRwWXO
safe vector ptr-yudai medium 34 https://hackmd.io/@ptr-yudai/BJ1Zs2lXO
gorypt ptr-yudai medium-hard 4 https://hackmd.io/@ptr-yudai/r12IJpg7d
nasm kit ptr-yudai hard 15 https://hackmd.io/@ptr-yudai/rkIng0ZQ_
GuestFS:RCE ptr-yudai lunatic 4 https://hackmd.io/@ptr-yudai/B1T8EIXIP
GuestFS:AFR ptr-yudai warmup 15 https://hackmd.io/@st98/SJPlajJ7O
Baby SQLi ptr-yudai easy 30 https://hackmd.io/@st98/S1cf6iyQd
Kantan Calc st98 easy-medium 50 https://hackmd.io/@st98/Sy7D5NymO
Simple Blog st98 medium-hard 23 https://hackmd.io/@st98/S1z9qV1X_
Pdf Generator s1r1us medium-hard 18 https://blog.s1r1us.ninja/CTF/zer0ptsctf2021-challenges
NOT Pdf Generator s1r1us medium-hard 4 https://blog.s1r1us.ninja/CTF/zer0ptsctf2021-challenges
infected ptr-yudai warmup 108 https://hackmd.io/@theoldmoon0602/HyE5BgfmO
syscall 777 ptr-yudai easy 61 :construction:
SuperSecretLogin x0r19x91 medium-hard 14 https://hackmd.io/@x0r19x91/H1TdWKRMu
Not Beginner's Rev ptr-yudai medium-hard 14 :construction:
spotlight ptr-yudai hard 14 :construction:
war(sa)mup theoremoon warmup 95 https://hackmd.io/@theoldmoon0602/SkIoOe0Gd
OT or NOT OT theoremoon easy 69 https://hackmd.io/@theoldmoon0602/BJ3qRgRz_
easy pseudo random mitsu easy 31 https://hackmd.io/@mitsu/rylnTLkXu
janken-vs-yoshiking theoremoon medium 44 https://hackmd.io/@theoldmoon0602/r1cMHWCzd
NOT Mordell Primes theoremoon medium-hard 19 https://hackmd.io/@theoldmoon0602/Hyaa2-RG_
3-AES theoremoon hard 27 https://hackmd.io/@theoldmoon0602/SJ3X1f0zu
signme ptr-yudai hard 12 https://hackmd.io/@ptr-yudai/rk6U4dPqv
pure division mitsu lunatic 7 https://hackmd.io/@mitsu/ByhK-tZX_
Subleq64 (=^・u・^=) medium 5 :construction:
Tokyo Network ptr-yudai hard 6 https://hackmd.io/@ptr-yudai/Hyy2ytX-u