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Triple Dereference

Time of First Successful Submission: 2025-12-19 12:21:35


Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-12-08 12:31:30

Command Arguments

Time of First Successful Submission: 2025-12-08 12:32:37

Command History

Time of First Successful Submission: 2025-12-08 12:33:15

The Root Path

Time of First Successful Submission: 2025-12-08 12:40:44

Absolute Paths

Time of First Successful Submission: 2025-12-08 12:41:31

Changing position

Time of First Successful Submission: 2025-12-08 12:42:51

Changing to an Absolute Path

Time of First Successful Submission: 2025-12-08 12:44:27

Relative Paths

Time of First Successful Submission: 2025-12-08 12:45:35

Cat

Time of First Successful Submission: 2025-12-10 12:34:14

Ls

Time of First Successful Submission: 2025-12-10 12:45:46

Ls All

Time of First Successful Submission: 2025-12-10 12:50:31

Find

Time of First Successful Submission: 2025-12-10 13:04:09

Piping Echo

Time of First Successful Submission: 2025-12-12 13:30:11

Piping Stdout

Time of First Successful Submission: 2025-12-12 13:32:41

Piping Stdin

Time of First Successful Submission: 2025-12-12 13:43:54


Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2025-12-10 17:28:58


Start Here

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Using the Terminal

Time of First Successful Submission: 2025-12-08 11:18:32

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-08 12:13:34

Using the GUI Desktop

Time of First Successful Submission: 2025-12-08 12:16:52

Pasting into the Desktop

Time of First Successful Submission: 2025-12-08 12:20:45

Restarting Challenges

Time of First Successful Submission: 2025-12-08 12:23:49

Challenge Programs

Time of First Successful Submission: 2025-12-08 11:20:02

The Flag File

Time of First Successful Submission: 2025-12-08 11:23:37

Using Privileged Mode

Time of First Successful Submission: 2025-12-08 11:37:29

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-08 12:09:25

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-08 12:11:10


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-12-08 12:31:30

Intro to Arguments

Time of First Successful Submission: 2025-12-08 12:32:37

Command History

Time of First Successful Submission: 2025-12-08 12:33:15

The Root

Time of First Successful Submission: 2025-12-08 12:40:44

Program and absolute paths

Time of First Successful Submission: 2025-12-08 12:41:31

Position thy self

Time of First Successful Submission: 2025-12-08 12:42:51

Position elsewhere

Time of First Successful Submission: 2025-12-08 12:44:27

implicit relative paths, from /

Time of First Successful Submission: 2025-12-08 12:45:35

explicit relative paths, from /

Time of First Successful Submission: 2025-12-08 12:47:56

implicit relative path

Time of First Successful Submission: 2025-12-08 12:49:42

home sweet home

Time of First Successful Submission: 2025-12-08 12:53:00

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-10 12:34:14

catting absolute paths

Time of First Successful Submission: 2025-12-10 12:35:09

more catting practice

Time of First Successful Submission: 2025-12-10 12:36:39

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-10 12:37:29

comparing files

Time of First Successful Submission: 2025-12-10 12:39:16

listing files

Time of First Successful Submission: 2025-12-10 12:45:46

touching files

Time of First Successful Submission: 2025-12-10 12:46:51

removing files

Time of First Successful Submission: 2025-12-10 12:47:30

moving files

Time of First Successful Submission: 2025-12-10 12:48:43

copying files

Time of First Successful Submission: 2025-12-10 12:49:23

hidden files

Time of First Successful Submission: 2025-12-10 12:50:31

An Epic Filesystem Quest

Time of First Successful Submission: 2025-12-10 12:54:50

making directories

Time of First Successful Submission: 2025-12-10 12:55:56

finding files

Time of First Successful Submission: 2025-12-10 13:04:09

linking files

Time of First Successful Submission: 2025-12-10 13:15:44

Learning From Documentation

Time of First Successful Submission: 2025-12-10 13:18:11

Learning Complex Usage

Time of First Successful Submission: 2025-12-10 13:19:23

Reading Manuals

Time of First Successful Submission: 2025-12-10 13:22:10

Searching Manuals

Time of First Successful Submission: 2025-12-10 14:12:54

Searching For Manuals

Time of First Successful Submission: 2025-12-10 14:39:12

Helpful Programs

Time of First Successful Submission: 2025-12-10 14:40:41

Help for Builtins

Time of First Successful Submission: 2025-12-10 14:43:24

Matching with *

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

Matching with ?

Time of First Successful Submission: 2025-12-12 10:12:47

Matching with []

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

Matching paths with []

Time of First Successful Submission: 2025-12-12 10:19:41

Multiple globs

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

Mixing globs

Time of First Successful Submission: 2025-12-12 13:19:05

Exclusionary globbing

Time of First Successful Submission: 2025-12-12 13:22:07

Tab completion

Time of First Successful Submission: 2025-12-12 13:23:27

Multiple options for tab completion

Time of First Successful Submission: 2025-12-12 13:26:04

Tab completion on commands

Time of First Successful Submission: 2025-12-12 13:26:56

Redirecting output

Time of First Successful Submission: 2025-12-12 13:30:11

Redirecting more output

Time of First Successful Submission: 2025-12-12 13:32:41

Appending output

Time of First Successful Submission: 2025-12-12 13:37:06

Redirecting errors

Time of First Successful Submission: 2025-12-12 13:41:49

Redirecting input

Time of First Successful Submission: 2025-12-12 13:43:54

Grepping stored results

Time of First Successful Submission: 2025-12-12 13:45:54

Grepping live output

Time of First Successful Submission: 2025-12-12 13:47:38

Grepping errors

Time of First Successful Submission: 2025-12-12 13:50:15

Filtering with grep -v

Time of First Successful Submission: 2025-12-12 13:51:32

Filtering with sed

Time of First Successful Submission: 2025-12-12 14:02:34

Duplicating piped data with tee

Time of First Successful Submission: 2025-12-12 14:10:34

Process substitution for input

Time of First Successful Submission: 2025-12-12 14:23:57

Writing to multiple programs

Time of First Successful Submission: 2025-12-12 16:51:22

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-13 06:38:02

Named pipes

Time of First Successful Submission: 2025-12-13 06:48:01

Printing Variables

Time of First Successful Submission: 2025-12-13 06:50:29

Setting Variables

Time of First Successful Submission: 2025-12-13 06:51:54

Multi-word Variables

Time of First Successful Submission: 2025-12-13 06:52:56

Exporting Variables

Time of First Successful Submission: 2025-12-13 06:55:13

Printing Exported Variables

Time of First Successful Submission: 2025-12-13 06:56:03

Storing Command Output

Time of First Successful Submission: 2025-12-13 07:02:52

Reading Input

Time of First Successful Submission: 2025-12-13 07:05:01

Reading Files

Time of First Successful Submission: 2025-12-13 07:09:15

Translating characters

Time of First Successful Submission: 2025-12-13 07:15:36

Deleting characters

Time of First Successful Submission: 2025-12-13 07:16:35

Deleting newlines

Time of First Successful Submission: 2025-12-13 07:18:11

Extracting the first lines with head

Time of First Successful Submission: 2025-12-13 07:19:09

Extracting specific sections of text

Time of First Successful Submission: 2025-12-13 07:21:38

Sorting data

Time of First Successful Submission: 2025-12-13 07:23:31

Listing Processes

Time of First Successful Submission: 2025-12-13 07:30:25

Killing Processes

Time of First Successful Submission: 2025-12-13 07:32:58

Interrupting Processes

Time of First Successful Submission: 2025-12-13 07:33:49

Killing Misbehaving Processes

Time of First Successful Submission: 2025-12-14 09:09:19

Suspending Processes

Time of First Successful Submission: 2025-12-14 09:11:03

Resuming Processes

Time of First Successful Submission: 2025-12-14 09:12:10

Backgrounding Processes

Time of First Successful Submission: 2025-12-14 09:23:25

Foregrounding Processes

Time of First Successful Submission: 2025-12-14 09:24:58

Starting Backgrounded Processes

Time of First Successful Submission: 2025-12-14 09:25:45

Process Exit Codes

Time of First Successful Submission: 2025-12-14 09:28:25

Becoming root with su

Time of First Successful Submission: 2025-12-14 09:34:13

Other users with su

Time of First Successful Submission: 2025-12-14 09:35:16

Cracking passwords

Time of First Successful Submission: 2025-12-14 09:42:56

Using sudo

Time of First Successful Submission: 2025-12-14 09:45:56

Changing File Ownership

Time of First Successful Submission: 2025-12-14 09:54:03

Groups and Files

Time of First Successful Submission: 2025-12-14 10:07:00

Fun With Groups Names

Time of First Successful Submission: 2025-12-14 10:09:01

Changing Permissions

Time of First Successful Submission: 2025-12-14 10:13:18

Executable Files

Time of First Successful Submission: 2025-12-14 10:16:13

Permission Tweaking Practice

Time of First Successful Submission: 2025-12-14 11:07:13

Permissions Setting Practice

Time of First Successful Submission: 2025-12-14 11:12:59

The SUID Bit

Time of First Successful Submission: 2025-12-14 11:16:34

Chaining with Semicolons

Time of First Successful Submission: 2025-12-14 11:19:45

Building on Success

Time of First Successful Submission: 2025-12-14 11:21:27

Handling Failure

Time of First Successful Submission: 2025-12-14 11:22:46

Your First Shell Script

Time of First Successful Submission: 2025-12-14 11:24:53

Redirecting Script Output

Time of First Successful Submission: 2025-12-14 11:34:31

Executable Shell Scripts

Time of First Successful Submission: 2025-12-14 11:37:48

Understanding Shebangs

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

Scripting with Arguments

Time of First Successful Submission: 2025-12-14 11:49:04

Scripting with Conditionals

Time of First Successful Submission: 2025-12-14 11:52:01

Scripting with Default Cases

Time of First Successful Submission: 2025-12-14 11:53:52

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-12-14 11:58:07

Reading Shell Scripts

Time of First Successful Submission: 2025-12-14 11:59:55

Launching Screen

Time of First Successful Submission: 2025-12-14 12:01:27

Detaching and Attaching

Time of First Successful Submission: 2025-12-14 12:03:29

Finding Sessions

Time of First Successful Submission: 2025-12-14 12:05:19

Switching Windows

Time of First Successful Submission: 2025-12-14 12:07:18

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-12-14 12:08:51

Switching Windows (tmux)

Time of First Successful Submission: 2025-12-14 12:10:07

The PATH Variable

Time of First Successful Submission: 2025-12-14 12:13:51

Setting PATH

Time of First Successful Submission: 2025-12-14 12:16:31

Finding Commands

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

Adding Commands

Time of First Successful Submission: 2025-12-14 12:24:31

Hijacking Commands

Time of First Successful Submission: 2025-12-14 12:36:37

Bashrc Backdoor

Time of First Successful Submission: 2025-12-14 12:47:08

Sniffing Input

Time of First Successful Submission: 2025-12-14 13:22:47

Overshared Directories

Time of First Successful Submission: 2025-12-14 13:30:20

Tricky Linking

Time of First Successful Submission: 2025-12-14 13:42:56

Sniffing Process Arguments

Time of First Successful Submission: 2025-12-14 13:46:20

Snooping on Configurations

Time of First Successful Submission: 2025-12-14 13:49:12

The Fork Bomb

Time of First Successful Submission: 2025-12-15 17:45:22

Disk-Space Doomsday

Time of First Successful Submission: 2025-12-15 08:34:14

rm -rf /

Time of First Successful Submission: 2025-12-15 07:19:52

Life after rm -rf /

Time of First Successful Submission: 2025-12-15 07:38:18

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-12-15 08:26:33


Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-17 13:33:36

Your First Syscall

Time of First Successful Submission: 2025-12-17 13:54:23

Exit Codes

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

Building Executables

Time of First Successful Submission: 2025-12-19 06:57:49

Moving Between Registers

Time of First Successful Submission: 2025-12-19 07:15:43

Loading From Memory

Time of First Successful Submission: 2025-12-19 11:45:16

More Loading Practice

Time of First Successful Submission: 2025-12-19 11:47:25

Dereferencing Pointers

Time of First Successful Submission: 2025-12-19 12:01:42

Dereferencing Yourself

Time of First Successful Submission: 2025-12-19 12:07:26

Dereferencing with Offsets

Time of First Successful Submission: 2025-12-19 12:10:53

Stored Addresses

Time of First Successful Submission: 2025-12-19 12:16:05

Double Dereference

Time of First Successful Submission: 2025-12-19 12:18:39

Tracing Syscalls

Time of First Successful Submission: 2025-12-19 07:54:33

Starting GDB

Time of First Successful Submission: 2025-12-19 07:56:36

Starting Programs in GDB

Time of First Successful Submission: 2025-12-19 07:58:05

Writing Output

Time of First Successful Submission: 2025-12-20 06:27:00

Chaining Syscalls

Time of First Successful Submission: 2025-12-20 06:29:19

Writing Strings

Time of First Successful Submission: 2025-12-20 06:30:03

Reading Data

Time of First Successful Submission: 2025-12-20 06:35:02

set-register

Time of First Successful Submission: 2025-12-20 06:45:19

set-multiple-registers

Time of First Successful Submission: 2025-12-20 06:47:10

add-to-register

Time of First Successful Submission: 2025-12-20 06:49:49

linear-equation-registers

Time of First Successful Submission: 2025-12-20 06:52:52

integer-division

Time of First Successful Submission: 2025-12-24 06:04:02

modulo-operation

Time of First Successful Submission: 2025-12-24 06:05:44

set-upper-byte

Time of First Successful Submission: 2025-12-24 06:08:43


GCA CTF

10 / 104 18765 / 43532


Using the Terminal

Time of First Successful Submission: 2025-12-08 11:18:32

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-08 12:13:34

Using the GUI Desktop

Time of First Successful Submission: 2025-12-08 12:16:52

Pasting into the Desktop

Time of First Successful Submission: 2025-12-08 12:20:45

Restarting Challenges

Time of First Successful Submission: 2025-12-08 12:23:49

Challenge Programs

Time of First Successful Submission: 2025-12-08 11:20:02

The Flag File

Time of First Successful Submission: 2025-12-08 11:23:37

Using Privileged Mode

Time of First Successful Submission: 2025-12-08 11:37:29

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-08 12:09:25

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-08 12:11:10