Training 2020 2021
83 challenges with 100 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 liveUncategorised81
The upstream scoreboard did not say, so neither do we.
Also written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
Server
4 official solutionsAlso written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
Chain
2 official solutionsAlso written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
CustomProtocolEasy
2 official solutionsAlso written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
CustomProtocolHardcore
2 official solutionsAlso written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
DeepCrypt
2 official solutionsAlso written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
HidingAlgo
2 official solutionsAlso written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
PhotoROT
2 official solutionsAlso written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF, 0awawa0/DonNU_CTF
[Newbie]1
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
[Newbie]2
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
[Newbie]3
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
[Newbie]4
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
[Newbie]5
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
[Newbie]6
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
[Newbie]7
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Array
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Array To Hex
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Array To Hex Easy
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
babyRSA1
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
babyRSA2
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
babyRSA3
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
babyRSA4
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
babyRSA5
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
babyRSA6
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
babyRSA7
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
ComMod
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Compare
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Disappeared
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Easy2
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Easy5
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Easy6
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Easy7
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Encryption
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Even Digits Number
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Even Digits Number Easy
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Filter The Array
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Filter The Array Easy
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Find Max
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Find Max Easy
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Full Aes
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Hiding Algorithm
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
LoopBack
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Lsb Hide
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Max Subarray
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Passw
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Quadratic Equation
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Quadratic Equation Easy
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Roman To Int
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Also written up in: 0awawa0/DonNU_CTF
Schet
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Script
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Shuffle The Array
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Smart
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Smart2
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Snyde
1 official solutionAlso written up in: lucthienphong1120/ISP-CTF
Snyde Solve
1 official solutionAlso written up in: lucthienphong1120/ISP-CTF
Soduku
1 official solutionAlso written up in: lucthienphong1120/ISP-CTF
Sort Array
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Sort Array Easy
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
ThreeMessages
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Winner
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Zero Sum
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
String
1 official solutionAlso written up in: 0awawa0/DonNU_CTF
String Easy
1 official solutionAlso written up in: 0awawa0/DonNU_CTF