Intro to Programming Languages

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Commands

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Command Arguments

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Command History

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The Root Path

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Absolute Paths

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Changing position

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Changing to an Absolute Path

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Relative Paths

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Cat

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Ls

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Ls All

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Find

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Intro to Cybersecurity

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Connect

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Send

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Shutdown

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Listen

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Scan 1

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Scan 2

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Monitor 1

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Sniffing Cookies

Time of First Successful Submission: 2026-01-31 16:48:43

Network Configuration

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Firewall 1

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Firewall 2

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Firewall 3

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ARP

Time of First Successful Submission: 2026-01-31 22:22:13

Man-in-the-Middle

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File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2025-11-04 09:37:32

File Formats: Magic Numbers (C)

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File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2025-11-04 10:02:38

Reading Endianness (Python)

Time of First Successful Submission: 2025-11-04 10:07:53

Reading Endianness (x86)

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Version Information (Python)

Time of First Successful Submission: 2025-11-04 12:18:14

Version Information (x86)

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Metadata and Data (x86)

Time of First Successful Submission: 2025-11-05 21:54:48

Input Restrictions (x86)

Time of First Successful Submission: 2025-11-06 14:12:02

Behold the cIMG! (x86)

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A Basic cIMG (x86)

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Internal State Mini (C)

Time of First Successful Submission: 2025-11-13 11:47:18

Internal State Mini (x86)

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Internal State (C)

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Internal State (x86)

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File Formats: Directives (C)

Time of First Successful Submission: 2025-11-16 18:02:28

File Formats: Directives (x86)

Time of First Successful Submission: 2025-11-16 18:24:37

Your First Overflow (easy)

Time of First Successful Submission: 2025-12-02 09:24:04

Your First Overflow (hard)

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Precision (easy)

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Precision (hard)

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Variable Control (easy)

Time of First Successful Submission: 2025-12-02 10:27:33

Variable Control (hard)

Time of First Successful Submission: 2025-12-02 15:54:28

Control Hijack (easy)

Time of First Successful Submission: 2025-12-02 10:38:26

Control Hijack (hard)

Time of First Successful Submission: 2025-12-02 16:45:39

Tricky Control Hijack (easy)

Time of First Successful Submission: 2025-12-07 10:08:00

Tricky Control Hijack (hard)

Time of First Successful Submission: 2025-12-07 10:34:32

PIEs (easy)

Time of First Successful Submission: 2025-12-07 10:58:45

PIEs (hard)

Time of First Successful Submission: 2025-12-07 11:16:37

String Lengths (easy)

Time of First Successful Submission: 2025-12-07 12:17:42

String Lengths (hard)

Time of First Successful Submission: 2025-12-07 14:26:25

Basic Shellcode

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NOP Sleds

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NULL-Free Shellcode

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Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2025-12-14 11:53:02

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2025-12-14 12:14:02

Hijack to Shellcode (easy)

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Hijack to Shellcode (hard)

Time of First Successful Submission: 2025-12-15 15:34:38


Program Security

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Terrible Token (Easy)

Time of First Successful Submission: 2025-11-18 09:13:17

Terrible Token (Hard)

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Tangled Ticket (Easy)

Time of First Successful Submission: 2025-11-18 21:16:35

Tangled Ticket (Hard)

Time of First Successful Submission: 2025-11-22 23:20:18

Meager Mangler (Easy)

Time of First Successful Submission: 2025-11-24 10:04:30

Monstrous Mangler (Easy)

Time of First Successful Submission: 2025-11-24 10:19:57

Trust the Yancode (Easy)

Time of First Successful Submission: 2025-11-24 11:57:16

Trust the Yancode (Hard)

Time of First Successful Submission: 2025-11-29 19:26:09

Know the Yancode (Easy)

Time of First Successful Submission: 2025-11-24 18:19:50

Know the Yancode (Hard)

Time of First Successful Submission: 2025-11-30 15:52:40

Master the Yancode (Easy)

Time of First Successful Submission: 2025-11-24 18:48:05

Master the Yancode (Hard)

Time of First Successful Submission: 2025-11-30 16:42:47

Transcend the Yancode (Easy)

Time of First Successful Submission: 2025-11-24 19:10:17

Transcend the Yancode (Hard)

Time of First Successful Submission: 2025-12-01 08:51:06

The Yanalyzer (Easy)

Time of First Successful Submission: 2025-11-25 12:09:38

The Yanalyzer (Hard)

Time of First Successful Submission: 2025-12-01 15:20:12

The Yangler (Easy)

Time of First Successful Submission: 2025-11-26 17:23:48

The Yangler (Hard)

Time of First Successful Submission: 2025-12-01 17:43:12

Loose Link (Easy)

Time of First Successful Submission: 2026-01-04 15:39:32

Call Chain (Easy)

Time of First Successful Submission: 2026-01-04 18:17:29

Chain of Command (Easy)

Time of First Successful Submission: 2026-01-05 08:10:52

Chain of Command (Hard)

Time of First Successful Submission: 2026-01-05 08:44:48

Stop, Pop, and ROP (Easy)

Time of First Successful Submission: 2026-01-18 15:46:10

Indirect Invocation (Easy)

Time of First Successful Submission: 2026-01-18 21:56:29

Indirect Invocation (Hard)

Time of First Successful Submission: 2026-01-19 16:07:48


Start Here

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Using the Terminal

Time of First Successful Submission: 2025-10-21 20:40:06

Using the VSCode Workspace

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Using the GUI Desktop

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Pasting into the Desktop

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Restarting Challenges

Time of First Successful Submission: 2025-10-21 20:51:52

Challenge Programs

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The Flag File

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Using Privileged Mode

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Persistent Home Directories - One

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Persistent Home Directories - Two

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Linux Luminarium

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Intro to Commands

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Intro to Arguments

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Command History

Time of First Successful Submission: 2025-10-21 20:58:28

The Root

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Program and absolute paths

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Position thy self

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Position elsewhere

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implicit relative paths, from /

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explicit relative paths, from /

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implicit relative path

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home sweet home

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cat: not the pet, but the command!

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catting absolute paths

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more catting practice

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grepping for a needle in a haystack

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comparing files

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listing files

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touching files

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removing files

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moving files

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hidden files

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An Epic Filesystem Quest

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making directories

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finding files

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linking files

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Learning From Documentation

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Learning Complex Usage

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Reading Manuals

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Searching Manuals

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Searching For Manuals

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Helpful Programs

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Help for Builtins

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Computing 101

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count-non-zero

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Playing With Programs

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Encoding Base64

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Dealing with Obfuscation

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Dealing with Obfuscation 2

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cat

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more

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less

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tail

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head

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sort

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vim

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emacs

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nano

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rev

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od

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hd

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xxd

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base32

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base64

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split

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gzip

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bzip2

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zip

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tar

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ar

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cpio

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env

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find

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make

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python

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bash

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GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-10-21 20:40:06

Using the VSCode Workspace

Time of First Successful Submission: 2025-10-21 20:42:08

Using the GUI Desktop

Time of First Successful Submission: 2025-10-21 20:44:00

Pasting into the Desktop

Time of First Successful Submission: 2025-10-21 20:46:18

Restarting Challenges

Time of First Successful Submission: 2025-10-21 20:51:52

Getting Help

Time of First Successful Submission: 2025-10-21 20:53:40

Challenge Programs

Time of First Successful Submission: 2025-10-21 18:48:55

The Flag File

Time of First Successful Submission: 2025-10-21 19:07:34

Using Privileged Mode

Time of First Successful Submission: 2025-10-21 20:19:11

Persistent Home Directories - One

Time of First Successful Submission: 2025-10-21 20:35:38

Persistent Home Directories - Two

Time of First Successful Submission: 2025-10-21 20:37:37


Hunter Dojo

4 / 4 36 / 94


Level 1

Time of First Successful Submission: 2026-02-03 12:16:16

Level 2

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Level 3

Time of First Successful Submission: 2026-02-15 17:41:55

Level 4

Time of First Successful Submission: 2026-02-15 18:37:46