JohnDoers | MindCrafters CTF Team

Writeups About Members Achievements Stats

JohnDoers

Team Vice-captain

Joined July 2024

Experties

About

A tech enthusiast with a passion for kickboxing, motorcycling, and teaching. Newbie in CTF competitions.

Last flag captured on Oct 18, 2026.

Achievements

Flags

461

Bloods

12

CTFs

104

Writeups

10

Certificate

Silver

9

36

10

Published on
June 14, 2026
Player 2 / crypto - EN
crypto
crypto
boroCTF-2026
Name
kerszi
Name
JohnDoers
Player 2 from boroCTF 2026
Published on
June 14, 2026
Player 2 / crypto - PL
crypto
crypto
boroCTF-2026
Name
kerszi
Name
JohnDoers
Player 2 z boroCTF 2026
Published on
June 7, 2026
Culinary Circles — GPN CTF 2026
osint
osint
misc
misc
Name
JohnDoers
Name
Grzechu
Name
T0m4sh
Miscellaneous - osint task from GPN CTF 2026
Published on
June 1, 2026
THEM?!CTF 2026 - Forensics Writeups
forensic
forensic
THEM?!CTF-2026
Name
Grzechu
Name
JohnDoers
Name
michalBB
Name
kacper
Detailed solutions for the 9 forensics challenges solved during THEM?!CTF 2026.
Published on
May 17, 2026
TJCTF 2026 - Misc challenges
misc
misc
TJCTF-2026 TJCTF
Name
kerszi
Name
michalBB
Name
JohnDoers
Name
Lazarus
Name
Deidar
Name
Grzechu
These misc tasks originate from TJCTF 2026
Published on
March 29, 2026
TexSaw 2026 - Osint challenges
osint
osint
TexSaw-2026 TexSaw
Name
kerszi
Name
JohnDoers
These tasks originate from TexSaw 2026
Published on
January 14, 2026
New Year CTF 2026 - PWN challenges
pwn
pwn
New-Year-CTF-2026 New-Year-CTF
Name
Grzechu
Name
JohnDoers
Name
kerszi
These tasks originate from New Year CTF 2026
Published on
July 17, 2025
Forensic - Keepass password recovery
forensic
forensic
password keepass
Name
JohnDoers
Junior.Crypt.2025 CTF - Forensic - Password recovery
Published on
February 14, 2025
For the Love of OSINT CTF - The Numbers Mason
osint
osint
stego
stego
Name
Grzechu
Name
JohnDoers
This challenge required decoding a WAV file containing DTMF tones, translating them into a T9 keyboard input, and uncovering a URL leading to the final flag.
Published on
January 28, 2025
No Comment
osint
osint
stego
stego
Name
JohnDoers
In the "No Comment" challenge, participants started with an image file from which they needed to extract a hidden flag using a combination of OSINT and basic cryptography techniques.