National Cyber Drill 2021 (Basic) || Write-up || Part 1

https://contesthack.com/wp-content/uploads/2022/08/NCD2021.png 850 525 Contest Hack Contest Hack https://contesthack.com/wp-content/uploads/2022/08/NCD2021.png August 21, 2022 August 24, 2022

Here I’m going to give you a quick write-up for the challenges of National Cyber Drill that I was able to solve. I Hope you guys will find this helpful. You will find all the challenges here : http://13.92.58.29/CyberDrill/NCD-2021/

[ Thanks to Abrar Mostafiz YEALID ]

Basic

Eagles eye shot!! : 25

In this challenge we have to find out the actual message of Elon. There’s a hex value in reply. Just decode it from hex & you’ll get the flag.

**Flag : Cyb3rDr1ll{1_@M_UN@BL3_T0_F1Nd_U}**

Warmup : 50

In this challenge we are provided with a txt file. The txt file contains base64 encoded text. Keep decoding the base64 until you find meaningful text.

Flag : Cyb3RDr1ll{যদি তোর ডাক শুনে কেউ না আসে}

MR. VEGENERE : 50

In this challenge we are provided with a cipher text with a key. The challenge title mentions VEGENERE. It’s clearly ensures that it’s a vegenere cipher. Let’s just decode it. The cipher text is “COEPOCFNMGM” & key is “BGD e-GOV CIRT” as the vegenere key can only contain letters the right key is “BGDeGOVCIRT”. The decoded text is : BIBLIOKLEPT

**Flag : Cyb3RDr1ll{BIBLIOKLEPT}**

ZIPPED: 100

In this challenge we are provided with a zip file which contains 99 zip files. We have to write a script to unzip the files.

Bash Script :

for a in {1..99}; do for z in *.zip; do unzip $z; rm $z;done;done

After this we will get a PNG file which contains the flag.

Flag : Cyb3RDr1L{H3r03s_Liv3_F0r3v3r}

Part 2 Here

Source: Knight Squad

National Cyber Drill 2021 (Basic) || Write-up || Part 1