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1 / 202 22331 / 22791


Triple Dereference

Time of First Successful Submission: 2026-01-22 12:18:40


Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-12-15 14:27:47

Command Arguments

Time of First Successful Submission: 2025-12-15 16:50:44

Command History

Time of First Successful Submission: 2025-12-15 16:58:51

The Root Path

Time of First Successful Submission: 2025-12-15 17:12:04

Absolute Paths

Time of First Successful Submission: 2025-12-15 17:12:52

Changing position

Time of First Successful Submission: 2025-12-15 17:17:07

Changing to an Absolute Path

Time of First Successful Submission: 2025-12-15 17:18:42

Relative Paths

Time of First Successful Submission: 2025-12-15 17:33:47

Cat

Time of First Successful Submission: 2025-12-15 17:49:49

Ls

Time of First Successful Submission: 2025-12-15 20:28:21

Ls All

Time of First Successful Submission: 2025-12-15 20:47:42

Find

Time of First Successful Submission: 2025-12-15 22:45:07

Piping Echo

Time of First Successful Submission: 2025-12-16 11:47:33

Piping Stdout

Time of First Successful Submission: 2025-12-16 11:51:21

Piping Stdin

Time of First Successful Submission: 2025-12-16 12:59:42


Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2025-12-23 22:32:57

Path Traversal 2

Time of First Successful Submission: 2025-12-24 16:15:12


Start Here

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Using the Terminal

Time of First Successful Submission: 2025-12-15 09:42:26

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-15 09:43:32

Using the GUI Desktop

Time of First Successful Submission: 2025-12-15 09:45:44

Pasting into the Desktop

Time of First Successful Submission: 2025-12-15 09:47:47

Restarting Challenges

Time of First Successful Submission: 2025-12-15 09:50:04

Challenge Programs

Time of First Successful Submission: 2025-12-15 08:50:25

The Flag File

Time of First Successful Submission: 2025-12-15 08:57:14

Using Privileged Mode

Time of First Successful Submission: 2025-12-15 09:16:32

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-15 09:33:41

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-15 09:32:57


Linux Luminarium

128 / 128 943 / 32345


Intro to Commands

Time of First Successful Submission: 2025-12-15 14:27:47

Intro to Arguments

Time of First Successful Submission: 2025-12-15 16:50:44

Command History

Time of First Successful Submission: 2025-12-15 16:58:51

The Root

Time of First Successful Submission: 2025-12-15 17:12:04

Program and absolute paths

Time of First Successful Submission: 2025-12-15 17:12:52

Position thy self

Time of First Successful Submission: 2025-12-15 17:17:07

Position elsewhere

Time of First Successful Submission: 2025-12-15 17:18:42

implicit relative paths, from /

Time of First Successful Submission: 2025-12-15 17:33:47

explicit relative paths, from /

Time of First Successful Submission: 2025-12-15 17:40:52

implicit relative path

Time of First Successful Submission: 2025-12-15 17:45:11

home sweet home

Time of First Successful Submission: 2025-12-15 17:48:10

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-15 17:49:49

catting absolute paths

Time of First Successful Submission: 2025-12-15 17:50:34

more catting practice

Time of First Successful Submission: 2025-12-15 17:58:02

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-15 20:20:44

comparing files

Time of First Successful Submission: 2025-12-15 20:27:43

listing files

Time of First Successful Submission: 2025-12-15 20:28:21

touching files

Time of First Successful Submission: 2025-12-15 20:29:04

removing files

Time of First Successful Submission: 2025-12-15 20:31:39

moving files

Time of First Successful Submission: 2025-12-15 20:40:32

copying files

Time of First Successful Submission: 2025-12-15 20:45:12

hidden files

Time of First Successful Submission: 2025-12-15 20:47:42

An Epic Filesystem Quest

Time of First Successful Submission: 2025-12-15 22:30:56

making directories

Time of First Successful Submission: 2025-12-15 22:38:12

finding files

Time of First Successful Submission: 2025-12-15 22:45:07

linking files

Time of First Successful Submission: 2025-12-19 22:10:16

Learning From Documentation

Time of First Successful Submission: 2025-12-15 22:56:02

Learning Complex Usage

Time of First Successful Submission: 2025-12-15 22:57:58

Reading Manuals

Time of First Successful Submission: 2025-12-15 23:01:24

Searching Manuals

Time of First Successful Submission: 2025-12-15 23:02:49

Searching For Manuals

Time of First Successful Submission: 2025-12-15 23:10:36

Helpful Programs

Time of First Successful Submission: 2025-12-16 08:58:15

Help for Builtins

Time of First Successful Submission: 2025-12-16 08:59:53

Matching with *

Time of First Successful Submission: 2025-12-16 09:31:38

Matching with ?

Time of First Successful Submission: 2025-12-16 09:32:39

Matching with []

Time of First Successful Submission: 2025-12-16 09:46:05

Matching paths with []

Time of First Successful Submission: 2025-12-16 09:51:44

Multiple globs

Time of First Successful Submission: 2025-12-16 09:56:19

Mixing globs

Time of First Successful Submission: 2025-12-16 10:59:59

Exclusionary globbing

Time of First Successful Submission: 2025-12-16 11:03:32

Tab completion

Time of First Successful Submission: 2025-12-16 11:04:18

Multiple options for tab completion

Time of First Successful Submission: 2025-12-16 11:05:36

Tab completion on commands

Time of First Successful Submission: 2025-12-16 11:06:04

Redirecting output

Time of First Successful Submission: 2025-12-16 11:47:33

Redirecting more output

Time of First Successful Submission: 2025-12-16 11:51:21

Appending output

Time of First Successful Submission: 2025-12-16 11:58:05

Redirecting errors

Time of First Successful Submission: 2025-12-16 12:01:07

Redirecting input

Time of First Successful Submission: 2025-12-16 12:59:42

Grepping stored results

Time of First Successful Submission: 2025-12-16 13:06:39

Grepping live output

Time of First Successful Submission: 2025-12-16 13:07:40

Grepping errors

Time of First Successful Submission: 2025-12-16 13:30:18

Filtering with grep -v

Time of First Successful Submission: 2025-12-16 14:04:33

Filtering with sed

Time of First Successful Submission: 2025-12-16 14:12:44

Duplicating piped data with tee

Time of First Successful Submission: 2025-12-17 09:52:13

Process substitution for input

Time of First Successful Submission: 2025-12-17 11:42:14

Writing to multiple programs

Time of First Successful Submission: 2025-12-17 16:32:50

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-17 20:59:02

Named pipes

Time of First Successful Submission: 2025-12-17 21:13:48

Printing Variables

Time of First Successful Submission: 2025-12-17 21:31:12

Setting Variables

Time of First Successful Submission: 2025-12-17 21:33:41

Multi-word Variables

Time of First Successful Submission: 2025-12-17 21:35:41

Exporting Variables

Time of First Successful Submission: 2025-12-17 21:39:09

Printing Exported Variables

Time of First Successful Submission: 2025-12-17 21:42:35

Storing Command Output

Time of First Successful Submission: 2025-12-17 21:44:41

Reading Input

Time of First Successful Submission: 2025-12-17 21:48:25

Reading Files

Time of First Successful Submission: 2025-12-17 21:50:43

Translating characters

Time of First Successful Submission: 2025-12-17 22:14:35

Deleting characters

Time of First Successful Submission: 2025-12-17 22:19:41

Deleting newlines

Time of First Successful Submission: 2025-12-17 22:23:04

Extracting the first lines with head

Time of First Successful Submission: 2025-12-17 22:24:27

Extracting specific sections of text

Time of First Successful Submission: 2025-12-17 22:29:19

Sorting data

Time of First Successful Submission: 2025-12-17 22:30:39

Listing Processes

Time of First Successful Submission: 2025-12-18 09:59:48

Killing Processes

Time of First Successful Submission: 2025-12-18 10:01:35

Interrupting Processes

Time of First Successful Submission: 2025-12-18 10:07:18

Killing Misbehaving Processes

Time of First Successful Submission: 2025-12-18 10:11:38

Suspending Processes

Time of First Successful Submission: 2025-12-18 10:15:33

Resuming Processes

Time of First Successful Submission: 2025-12-18 10:28:34

Backgrounding Processes

Time of First Successful Submission: 2025-12-18 11:16:07

Foregrounding Processes

Time of First Successful Submission: 2025-12-18 13:42:02

Starting Backgrounded Processes

Time of First Successful Submission: 2025-12-18 13:43:04

Process Exit Codes

Time of First Successful Submission: 2025-12-18 13:44:24

Becoming root with su

Time of First Successful Submission: 2025-12-18 13:50:20

Other users with su

Time of First Successful Submission: 2025-12-18 13:53:40

Cracking passwords

Time of First Successful Submission: 2025-12-18 14:09:25

Using sudo

Time of First Successful Submission: 2025-12-18 14:21:18

Changing File Ownership

Time of First Successful Submission: 2025-12-18 21:22:24

Groups and Files

Time of First Successful Submission: 2025-12-18 21:24:49

Fun With Groups Names

Time of First Successful Submission: 2025-12-18 21:28:00

Changing Permissions

Time of First Successful Submission: 2025-12-18 21:37:31

Executable Files

Time of First Successful Submission: 2025-12-18 21:41:54

Permission Tweaking Practice

Time of First Successful Submission: 2025-12-19 09:46:38

Permissions Setting Practice

Time of First Successful Submission: 2025-12-19 09:59:08

The SUID Bit

Time of First Successful Submission: 2025-12-19 10:16:17

Chaining with Semicolons

Time of First Successful Submission: 2025-12-19 10:17:31

Building on Success

Time of First Successful Submission: 2025-12-19 10:18:35

Handling Failure

Time of First Successful Submission: 2025-12-19 10:27:30

Your First Shell Script

Time of First Successful Submission: 2025-12-19 10:42:14

Redirecting Script Output

Time of First Successful Submission: 2025-12-19 11:12:10

Executable Shell Scripts

Time of First Successful Submission: 2025-12-19 11:13:35

Understanding Shebangs

Time of First Successful Submission: 2025-12-19 11:17:57

Scripting with Arguments

Time of First Successful Submission: 2025-12-19 11:21:05

Scripting with Conditionals

Time of First Successful Submission: 2025-12-19 11:38:22

Scripting with Default Cases

Time of First Successful Submission: 2025-12-19 11:50:56

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-12-19 13:43:29

Reading Shell Scripts

Time of First Successful Submission: 2025-12-19 13:44:31

Launching Screen

Time of First Successful Submission: 2025-12-19 13:47:20

Detaching and Attaching

Time of First Successful Submission: 2025-12-19 13:49:55

Finding Sessions

Time of First Successful Submission: 2025-12-19 13:51:35

Switching Windows

Time of First Successful Submission: 2025-12-19 13:52:36

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-12-19 13:56:17

Switching Windows (tmux)

Time of First Successful Submission: 2025-12-19 13:57:39

The PATH Variable

Time of First Successful Submission: 2025-12-19 14:16:35

Setting PATH

Time of First Successful Submission: 2025-12-19 14:21:39

Finding Commands

Time of First Successful Submission: 2025-12-19 14:25:10

Adding Commands

Time of First Successful Submission: 2025-12-19 15:17:22

Hijacking Commands

Time of First Successful Submission: 2025-12-19 15:25:32

Bashrc Backdoor

Time of First Successful Submission: 2025-12-19 15:52:21

Sniffing Input

Time of First Successful Submission: 2025-12-19 16:12:10

Overshared Directories

Time of First Successful Submission: 2025-12-19 21:16:32

Tricky Linking

Time of First Successful Submission: 2025-12-19 22:17:08

Sniffing Process Arguments

Time of First Successful Submission: 2025-12-19 22:19:32

Snooping on Configurations

Time of First Successful Submission: 2025-12-19 22:21:46

The Fork Bomb

Time of First Successful Submission: 2025-12-19 22:35:38

Disk-Space Doomsday

Time of First Successful Submission: 2025-12-19 22:38:47

rm -rf /

Time of First Successful Submission: 2025-12-19 22:48:19

Life after rm -rf /

Time of First Successful Submission: 2025-12-19 22:53:46

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-12-19 22:57:03


Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-23 20:41:29

Your First Syscall

Time of First Successful Submission: 2025-12-23 20:45:02

Exit Codes

Time of First Successful Submission: 2025-12-23 20:48:16

Building Executables

Time of First Successful Submission: 2025-12-23 21:15:34

Moving Between Registers

Time of First Successful Submission: 2025-12-23 21:28:09

Loading From Memory

Time of First Successful Submission: 2026-01-20 13:20:28

More Loading Practice

Time of First Successful Submission: 2026-01-20 13:24:35

Dereferencing Pointers

Time of First Successful Submission: 2026-01-20 15:35:38

Dereferencing Yourself

Time of First Successful Submission: 2026-01-20 15:51:10

Dereferencing with Offsets

Time of First Successful Submission: 2026-01-22 10:21:01

Stored Addresses

Time of First Successful Submission: 2026-01-22 11:33:19

Double Dereference

Time of First Successful Submission: 2026-01-22 12:11:47

Tracing Syscalls

Time of First Successful Submission: 2025-12-23 21:33:20

Starting GDB

Time of First Successful Submission: 2025-12-23 21:40:44

Starting Programs in GDB

Time of First Successful Submission: 2025-12-23 21:44:04

Writing Output

Time of First Successful Submission: 2026-01-22 16:35:08

Chaining Syscalls

Time of First Successful Submission: 2026-01-22 17:08:48

Writing Strings

Time of First Successful Submission: 2026-01-22 17:12:04


Playing With Programs

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What's the password?

Time of First Successful Submission: 2026-01-20 09:33:58

... and again!

Time of First Successful Submission: 2026-01-20 09:40:23

Newline Troubles

Time of First Successful Submission: 2026-01-20 09:46:38

Reasoning about files

Time of First Successful Submission: 2026-01-22 17:46:18

Specifying Filenames

Time of First Successful Submission: 2026-01-22 18:04:11

Binary and Hex Encoding

Time of First Successful Submission: 2026-01-26 13:16:10

More Hex

Time of First Successful Submission: 2026-01-28 09:45:05

Decoding Hex

Time of First Successful Submission: 2026-01-28 13:30:33

Decoding Practice

Time of First Successful Submission: 2026-01-31 20:49:58

Encoding Practice

Time of First Successful Submission: 2026-01-31 20:53:26

Your First HTTP Request

Time of First Successful Submission: 2026-01-14 18:45:12

Reading Flask

Time of First Successful Submission: 2026-01-14 18:51:31

Commented Data

Time of First Successful Submission: 2026-01-14 18:59:40

HTTP Metadata

Time of First Successful Submission: 2026-01-14 19:15:20

HTTP (netcat)

Time of First Successful Submission: 2026-01-14 19:26:00

HTTP Paths (netcat)

Time of First Successful Submission: 2026-01-14 19:30:05

HTTP (curl)

Time of First Successful Submission: 2026-01-14 19:32:12

HTTP (python)

Time of First Successful Submission: 2026-01-14 19:42:12

HTTP Host Header (python)

Time of First Successful Submission: 2026-01-14 20:02:00

HTTP Host Header (curl)

Time of First Successful Submission: 2026-01-14 20:04:15

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-01-14 20:36:21

URL Encoding (netcat)

Time of First Successful Submission: 2026-01-14 20:48:04

HTTP GET Parameters

Time of First Successful Submission: 2026-01-14 21:18:03

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-01-14 21:31:57

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-01-14 21:37:56

HTTP Forms

Time of First Successful Submission: 2026-01-15 09:05:00

HTTP Forms (curl)

Time of First Successful Submission: 2026-01-15 13:16:41

HTTP Forms (netcat)

Time of First Successful Submission: 2026-01-15 13:48:59

HTTP Forms (python)

Time of First Successful Submission: 2026-01-15 14:09:04

HTTP Forms Without Forms

Time of First Successful Submission: 2026-01-15 15:32:55

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-01-15 16:16:15

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-01-15 16:20:22

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-01-15 16:58:44

HTTP Redirects (curl)

Time of First Successful Submission: 2026-01-15 17:01:35

HTTP Redirects (python)

Time of First Successful Submission: 2026-01-16 09:53:52

HTTP Cookies (curl)

Time of First Successful Submission: 2026-01-16 11:04:44

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-01-18 16:29:46

HTTP Cookies (python)

Time of First Successful Submission: 2026-01-18 16:36:13

Server State (python)

Time of First Successful Submission: 2026-01-18 16:41:42

Listening Web

Time of First Successful Submission: 2026-01-19 23:55:31

cat

Time of First Successful Submission: 2025-12-24 16:43:17

more

Time of First Successful Submission: 2025-12-24 16:43:42

less

Time of First Successful Submission: 2025-12-24 16:44:22

tail

Time of First Successful Submission: 2025-12-24 16:45:11

head

Time of First Successful Submission: 2025-12-24 16:46:04

sort

Time of First Successful Submission: 2025-12-24 16:47:12

vim

Time of First Successful Submission: 2025-12-24 16:50:03

emacs

Time of First Successful Submission: 2025-12-24 16:52:20

nano

Time of First Successful Submission: 2025-12-24 16:52:40

rev

Time of First Successful Submission: 2025-12-24 16:53:44

od

Time of First Successful Submission: 2025-12-24 16:58:43

hd

Time of First Successful Submission: 2025-12-24 17:30:28

xxd

Time of First Successful Submission: 2025-12-24 17:31:37

base32

Time of First Successful Submission: 2025-12-24 17:32:29

base64

Time of First Successful Submission: 2025-12-24 17:33:08

split

Time of First Successful Submission: 2025-12-24 17:34:39

gzip

Time of First Successful Submission: 2025-12-24 17:41:18

bzip2

Time of First Successful Submission: 2025-12-24 17:45:09

zip

Time of First Successful Submission: 2025-12-24 17:52:14

tar

Time of First Successful Submission: 2025-12-24 17:53:12

ar

Time of First Successful Submission: 2025-12-24 18:02:14

cpio

Time of First Successful Submission: 2025-12-24 18:36:16

genisoimage

Time of First Successful Submission: 2025-12-24 18:38:06

env

Time of First Successful Submission: 2025-12-24 18:46:51

find

Time of First Successful Submission: 2025-12-24 18:49:05

make

Time of First Successful Submission: 2025-12-24 18:50:40

nice

Time of First Successful Submission: 2025-12-24 18:51:55

timeout

Time of First Successful Submission: 2025-12-24 18:53:22

stdbuf

Time of First Successful Submission: 2025-12-24 18:55:11

setarch

Time of First Successful Submission: 2025-12-24 18:56:08

watch

Time of First Successful Submission: 2025-12-24 22:02:12

socat

Time of First Successful Submission: 2025-12-24 22:04:09

whiptail

Time of First Successful Submission: 2025-12-24 22:08:15

awk

Time of First Successful Submission: 2025-12-24 22:22:15

sed

Time of First Successful Submission: 2025-12-24 22:29:13

ed

Time of First Successful Submission: 2025-12-24 22:31:28

chown

Time of First Successful Submission: 2025-12-24 22:34:04

chmod

Time of First Successful Submission: 2025-12-24 23:50:38

cp

Time of First Successful Submission: 2025-12-24 23:57:19

mv

Time of First Successful Submission: 2025-12-25 16:16:36

perl

Time of First Successful Submission: 2025-12-25 15:56:47

python

Time of First Successful Submission: 2025-12-25 16:01:12

ruby

Time of First Successful Submission: 2025-12-25 16:19:58

bash

Time of First Successful Submission: 2025-12-25 16:22:55

date

Time of First Successful Submission: 2025-12-25 16:23:44

dmesg

Time of First Successful Submission: 2025-12-25 16:26:27

wc

Time of First Successful Submission: 2025-12-25 16:27:48

gcc

Time of First Successful Submission: 2025-12-25 16:29:44

as

Time of First Successful Submission: 2025-12-25 16:30:19

wget

Time of First Successful Submission: 2025-12-25 16:35:06

SQL Queries

Time of First Successful Submission: 2025-12-25 20:20:06

Filtering SQL

Time of First Successful Submission: 2025-12-25 20:46:48

Choosing Columns

Time of First Successful Submission: 2025-12-29 11:44:54

Exclusionary Filtering

Time of First Successful Submission: 2025-12-29 11:50:05

Filtering Strings

Time of First Successful Submission: 2025-12-29 14:19:55

Filtering on Expressions

Time of First Successful Submission: 2025-12-30 09:57:59

SELECTing Expressions

Time of First Successful Submission: 2025-12-30 10:34:22


DOS Dojo

7 / 10 41 / 71


cat.exe (type)

Time of First Successful Submission: 2026-01-21 10:51:58

ls.exe (dir)

Time of First Successful Submission: 2026-01-21 11:31:03

Changing Disks

Time of First Successful Submission: 2026-01-21 11:33:18

Reading Floppies

Time of First Successful Submission: 2026-01-21 12:59:23

Installing MS-DOS

Time of First Successful Submission: 2026-01-21 13:03:46

autoexec.bat

Time of First Successful Submission: 2026-01-21 13:07:46

doskey

Time of First Successful Submission: 2026-01-21 13:21:09


GCA CTF

11 / 104 7488 / 43538


Using the Terminal

Time of First Successful Submission: 2025-12-15 09:42:26

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-15 09:43:32

Using the GUI Desktop

Time of First Successful Submission: 2025-12-15 09:45:44

Pasting into the Desktop

Time of First Successful Submission: 2025-12-15 09:47:47

Restarting Challenges

Time of First Successful Submission: 2025-12-15 09:50:04

Getting Help

Time of First Successful Submission: 2025-12-15 09:53:35

Challenge Programs

Time of First Successful Submission: 2025-12-15 08:50:25

The Flag File

Time of First Successful Submission: 2025-12-15 08:57:14

Using Privileged Mode

Time of First Successful Submission: 2025-12-15 09:16:32

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-15 09:33:41

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-15 09:32:57