TJCTF2020

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020

TJCTF 2020 - CTFTime

I finish 58th (868 people who mark at least 5 point) with 980 points.

bilan.png

Cryptography

Web

Reverse

Forensics


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TJCTF2020 - Admin Secrets

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020, web, xss, filtered, escape, js, encode

solves : 72

Points: 100

Written by avz92

See if you can get the flag from the admin at this website!

Hint: The admin can see something you can't. Check the page source.

After create a new account, we can create a text to share it with everyone.

admin_secrets.png

It's like …


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TJCTF2020 - arabfunny

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020, miscellaneous, misc

solves : 67

Points: 40

Written by jpes707

So many sounds...

Hint: Listen to all the sounds. Which sound could possibly be used to encode a message? 

arabfunny.mp3

We have a strange mp3 file with a lot of different sounds and we need to find the one.

Around 1:02 …


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TJCTF2020 - Censorship

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020, miscellaneous, misc

solves : 269

Points: 30

Written by avz92

My friend has some top-secret government intel. He left a message, but the government censored him! They didn't want the information to be leaked, but can you find out what he was trying to say?

nc p1.tjctf.org 8003

Ok, no …


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TJCTF2020 - Chord Encoder

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020, reversing, re, python

solves : 228

Points: 40

Written by boomo

I tried creating my own chords, but my encoded sheet music is a little hard to read. Please play me my song!

chord_encoder.py

Hint: Pathfinding? I just need some sick jams B) 

We have three files:

  • chors to number
A 0112
B …

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TJCTF2020 - Circles

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020, crypto, cryptography, font

solves : 261

Points: 10

Written by jpes707

Some typefaces are mysterious, like this one - its origins are an enigma wrapped within a riddle, indeed.

Hint: To obtain the flag, you should find the font that was used to encode the message in the picture. If you Google the description of …

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TJCTF2020 - File Viewer

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020, web, php, lfi, rfi

solves : 257

Points: 70

Written by saisree

So I've been developing this really cool site where you can read text files! It's still in beta mode, though, so there's only six files you can read.

Hint: The flag is in one directory somewhere on the server, all …

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TJCTF2020 - Gym

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020, reversing, re, ida, ghidra, c, asm

solves : 382

Points: 20

Written by agcdragon

Aneesh wants to acquire a summer bod for beach week, but time is running out. Can you help him create a plan to attain his goal?

nc p1.tjctf.org 8008

gym

We have a small game. The goal is to loose 31 …


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TJCTF2020 - Hexillology

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020, forensics

solves : 206

Points: 25 points

Written by jpes707

I recently designed a new flag for my imaginary nation, Hexistan. Do you like it?

meme.png

The name gives us a hint: Hex. We have 7 differents colors in the pictures. Let's get the hexa code for each one: 746a6374667b70594a7266514b306462615450477d.

We have a …


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TJCTF2020 - Is This Crypto?

Posted on mar. 02 juin 2020 in CTF • Tagged with hack, learn, ctf, tjctf, 2020, crypto, cryptography, xor, binary, file

solves : 123

Points: 50

Written by KyleForkBomb

Is this crypto?

Hint: The message is entirely printable characters 

file.txt

We have a file with strange text inside:

גפעהדפ±ע‏��

We don't have any clue about this file and cipher used. CyberChef maybe can do some magic:

isthiscrypto.png

Oh! And it detects …


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