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1 / 202 21970 / 22791

Triple Dereference

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

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-12-15 09:48:20

Command Arguments

Time of First Successful Submission: 2025-12-15 09:49:20

Command History

Time of First Successful Submission: 2025-12-15 09:49:57

The Root Path

Time of First Successful Submission: 2025-12-15 10:10:29

Absolute Paths

Time of First Successful Submission: 2025-12-15 10:11:37

Changing position

Time of First Successful Submission: 2025-12-15 10:12:45

Changing to an Absolute Path

Time of First Successful Submission: 2025-12-15 10:14:09

Relative Paths

Time of First Successful Submission: 2025-12-15 10:17:24

Cat

Time of First Successful Submission: 2025-12-15 10:26:49

Ls

Time of First Successful Submission: 2025-12-15 10:36:35

Ls All

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

Find

Time of First Successful Submission: 2025-12-15 10:57:24

Piping Echo

Time of First Successful Submission: 2025-12-16 13:45:10

Piping Stdout

Time of First Successful Submission: 2025-12-16 13:46:40

Piping Stdin

Time of First Successful Submission: 2025-12-16 13:52:16

Start Here

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Using the Terminal

Time of First Successful Submission: 2025-11-24 16:26:20

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-24 16:27:50

Using the GUI Desktop

Time of First Successful Submission: 2025-11-24 16:29:25

Pasting into the Desktop

Time of First Successful Submission: 2025-12-15 08:59:31

Restarting Challenges

Time of First Successful Submission: 2025-12-15 09:18:22

Challenge Programs

Time of First Successful Submission: 2025-12-15 09:22:44

The Flag File

Time of First Successful Submission: 2025-12-15 09:24:26

Using Privileged Mode

Time of First Successful Submission: 2025-12-15 09:28:16

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-15 09:30:06

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-15 09:31:36

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-12-15 09:48:20

Intro to Arguments

Time of First Successful Submission: 2025-12-15 09:49:20

Command History

Time of First Successful Submission: 2025-12-15 09:49:57

The Root

Time of First Successful Submission: 2025-12-15 10:10:29

Program and absolute paths

Time of First Successful Submission: 2025-12-15 10:11:37

Position thy self

Time of First Successful Submission: 2025-12-15 10:12:45

Position elsewhere

Time of First Successful Submission: 2025-12-15 10:14:09

implicit relative paths, from /

Time of First Successful Submission: 2025-12-15 10:17:24

explicit relative paths, from /

Time of First Successful Submission: 2025-12-15 10:19:08

implicit relative path

Time of First Successful Submission: 2025-12-15 10:19:59

home sweet home

Time of First Successful Submission: 2025-12-15 10:24:35

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-15 10:26:49

catting absolute paths

Time of First Successful Submission: 2025-12-15 10:27:18

more catting practice

Time of First Successful Submission: 2025-12-15 10:28:28

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-15 10:31:00

comparing files

Time of First Successful Submission: 2025-12-15 10:35:33

listing files

Time of First Successful Submission: 2025-12-15 10:36:35

touching files

Time of First Successful Submission: 2025-12-15 10:37:17

removing files

Time of First Successful Submission: 2025-12-15 10:44:26

moving files

Time of First Successful Submission: 2025-12-15 10:45:11

copying files

Time of First Successful Submission: 2025-12-15 10:45:48

hidden files

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

An Epic Filesystem Quest

Time of First Successful Submission: 2025-12-15 10:53:44

making directories

Time of First Successful Submission: 2025-12-15 10:54:45

finding files

Time of First Successful Submission: 2025-12-15 10:57:24

linking files

Time of First Successful Submission: 2025-12-15 16:11:42

Learning From Documentation

Time of First Successful Submission: 2025-12-15 16:13:41

Learning Complex Usage

Time of First Successful Submission: 2025-12-15 16:15:02

Reading Manuals

Time of First Successful Submission: 2025-12-15 16:17:57

Searching Manuals

Time of First Successful Submission: 2025-12-15 16:19:01

Searching For Manuals

Time of First Successful Submission: 2025-12-15 16:30:31

Helpful Programs

Time of First Successful Submission: 2025-12-15 16:31:49

Help for Builtins

Time of First Successful Submission: 2025-12-15 16:33:19

Matching with *

Time of First Successful Submission: 2025-12-16 13:06:04

Matching with ?

Time of First Successful Submission: 2025-12-16 13:07:39

Matching with []

Time of First Successful Submission: 2025-12-16 13:09:12

Matching paths with []

Time of First Successful Submission: 2025-12-16 13:10:59

Multiple globs

Time of First Successful Submission: 2025-12-16 13:12:11

Mixing globs

Time of First Successful Submission: 2025-12-16 13:32:20

Exclusionary globbing

Time of First Successful Submission: 2025-12-16 13:33:37

Tab completion

Time of First Successful Submission: 2025-12-16 13:35:25

Multiple options for tab completion

Time of First Successful Submission: 2025-12-16 13:36:32

Tab completion on commands

Time of First Successful Submission: 2025-12-16 13:37:20

Redirecting output

Time of First Successful Submission: 2025-12-16 13:45:10

Redirecting more output

Time of First Successful Submission: 2025-12-16 13:46:40

Appending output

Time of First Successful Submission: 2025-12-16 13:48:23

Redirecting errors

Time of First Successful Submission: 2025-12-16 13:51:15

Redirecting input

Time of First Successful Submission: 2025-12-16 13:52:16

Grepping stored results

Time of First Successful Submission: 2025-12-16 13:53:49

Grepping live output

Time of First Successful Submission: 2025-12-16 13:54:29

Grepping errors

Time of First Successful Submission: 2025-12-16 13:56:05

Filtering with grep -v

Time of First Successful Submission: 2025-12-16 13:57:02

Filtering with sed

Time of First Successful Submission: 2025-12-16 13:58:18

Duplicating piped data with tee

Time of First Successful Submission: 2025-12-16 14:01:35

Process substitution for input

Time of First Successful Submission: 2025-12-16 14:05:02

Writing to multiple programs

Time of First Successful Submission: 2025-12-16 14:09:04

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-16 14:15:55

Named pipes

Time of First Successful Submission: 2025-12-16 14:25:35

Printing Variables

Time of First Successful Submission: 2025-12-16 14:28:04

Setting Variables

Time of First Successful Submission: 2025-12-16 14:30:16

Multi-word Variables

Time of First Successful Submission: 2025-12-16 14:31:02

Exporting Variables

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

Printing Exported Variables

Time of First Successful Submission: 2025-12-16 14:34:09

Storing Command Output

Time of First Successful Submission: 2025-12-16 14:37:23

Reading Input

Time of First Successful Submission: 2025-12-16 14:40:51

Reading Files

Time of First Successful Submission: 2025-12-16 14:42:28

Translating characters

Time of First Successful Submission: 2025-12-17 11:59:41

Deleting characters

Time of First Successful Submission: 2025-12-17 12:04:34

Deleting newlines

Time of First Successful Submission: 2025-12-17 12:08:00

Extracting the first lines with head

Time of First Successful Submission: 2025-12-17 12:14:18

Extracting specific sections of text

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

Sorting data

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

Listing Processes

Time of First Successful Submission: 2025-12-17 13:00:09

Killing Processes

Time of First Successful Submission: 2025-12-18 08:23:31

Interrupting Processes

Time of First Successful Submission: 2025-12-18 09:00:49

Killing Misbehaving Processes

Time of First Successful Submission: 2025-12-18 09:04:55

Suspending Processes

Time of First Successful Submission: 2025-12-18 09:05:36

Resuming Processes

Time of First Successful Submission: 2025-12-18 09:06:13

Backgrounding Processes

Time of First Successful Submission: 2025-12-18 09:09:19

Foregrounding Processes

Time of First Successful Submission: 2025-12-18 09:10:03

Starting Backgrounded Processes

Time of First Successful Submission: 2025-12-18 09:10:49

Process Exit Codes

Time of First Successful Submission: 2025-12-18 09:13:03

Becoming root with su

Time of First Successful Submission: 2025-12-18 09:17:49

Other users with su

Time of First Successful Submission: 2025-12-18 09:18:21

Cracking passwords

Time of First Successful Submission: 2025-12-18 09:21:11

Using sudo

Time of First Successful Submission: 2025-12-18 09:25:04

Changing File Ownership

Time of First Successful Submission: 2025-12-18 09:47:42

Groups and Files

Time of First Successful Submission: 2025-12-18 09:57:05

Fun With Groups Names

Time of First Successful Submission: 2025-12-18 09:58:14

Changing Permissions

Time of First Successful Submission: 2025-12-18 11:21:49

Executable Files

Time of First Successful Submission: 2025-12-18 11:23:18

Permission Tweaking Practice

Time of First Successful Submission: 2025-12-18 11:31:12

Permissions Setting Practice

Time of First Successful Submission: 2025-12-18 11:47:37

The SUID Bit

Time of First Successful Submission: 2025-12-18 11:50:50

Chaining with Semicolons

Time of First Successful Submission: 2025-12-18 13:12:29

Building on Success

Time of First Successful Submission: 2025-12-18 13:14:54

Handling Failure

Time of First Successful Submission: 2025-12-18 13:15:55

Your First Shell Script

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

Redirecting Script Output

Time of First Successful Submission: 2025-12-18 13:28:21

Executable Shell Scripts

Time of First Successful Submission: 2025-12-18 13:39:49

Understanding Shebangs

Time of First Successful Submission: 2025-12-18 13:43:58

Scripting with Arguments

Time of First Successful Submission: 2025-12-18 13:46:19

Scripting with Conditionals

Time of First Successful Submission: 2025-12-18 13:49:19

Scripting with Default Cases

Time of First Successful Submission: 2025-12-18 13:51:58

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-12-18 13:55:14

Reading Shell Scripts

Time of First Successful Submission: 2025-12-18 13:57:11

Launching Screen

Time of First Successful Submission: 2025-12-18 14:21:42

Detaching and Attaching

Time of First Successful Submission: 2025-12-18 14:24:19

Finding Sessions

Time of First Successful Submission: 2025-12-18 14:26:33

Switching Windows

Time of First Successful Submission: 2025-12-18 14:28:13

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-12-18 14:56:49

Switching Windows (tmux)

Time of First Successful Submission: 2025-12-18 15:16:15

The PATH Variable

Time of First Successful Submission: 2025-12-18 15:56:10

Setting PATH

Time of First Successful Submission: 2025-12-18 15:58:09

Finding Commands

Time of First Successful Submission: 2025-12-18 16:03:32

Adding Commands

Time of First Successful Submission: 2025-12-18 16:11:31

Hijacking Commands

Time of First Successful Submission: 2025-12-18 16:13:07

Bashrc Backdoor

Time of First Successful Submission: 2025-12-19 10:00:56

Sniffing Input

Time of First Successful Submission: 2025-12-19 10:06:42

Overshared Directories

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

Tricky Linking

Time of First Successful Submission: 2025-12-19 10:24:51

Sniffing Process Arguments

Time of First Successful Submission: 2025-12-19 10:26:32

Snooping on Configurations

Time of First Successful Submission: 2025-12-19 10:28:27

The Fork Bomb

Time of First Successful Submission: 2025-12-19 10:56:42

Disk-Space Doomsday

Time of First Successful Submission: 2025-12-19 10:58:55

rm -rf /

Time of First Successful Submission: 2025-12-19 11:07:59

Life after rm -rf /

Time of First Successful Submission: 2025-12-19 13:28:07

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-12-19 13:32:22

Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-19 13:46:39

Your First Syscall

Time of First Successful Submission: 2025-12-19 13:49:21

Exit Codes

Time of First Successful Submission: 2025-12-19 13:50:34

Building Executables

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

Moving Between Registers

Time of First Successful Submission: 2025-12-19 13:59:28

Loading From Memory

Time of First Successful Submission: 2025-12-22 15:37:06

More Loading Practice

Time of First Successful Submission: 2025-12-22 15:38:30

Dereferencing Pointers

Time of First Successful Submission: 2025-12-22 15:54:04

Dereferencing Yourself

Time of First Successful Submission: 2025-12-22 16:01:34

Dereferencing with Offsets

Time of First Successful Submission: 2025-12-22 16:04:34

Stored Addresses

Time of First Successful Submission: 2025-12-22 16:08:58

Double Dereference

Time of First Successful Submission: 2025-12-22 16:11:30

Tracing Syscalls

Time of First Successful Submission: 2025-12-19 14:04:17

Starting GDB

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

Starting Programs in GDB

Time of First Successful Submission: 2025-12-19 14:08:00

Writing Output

Time of First Successful Submission: 2025-12-22 16:31:23

Chaining Syscalls

Time of First Successful Submission: 2025-12-22 16:38:56

Writing Strings

Time of First Successful Submission: 2025-12-22 16:39:39

Reading Data

Time of First Successful Submission: 2025-12-22 16:42:00

set-register

Time of First Successful Submission: 2025-12-24 08:27:04

set-multiple-registers

Time of First Successful Submission: 2025-12-24 08:30:27

add-to-register

Time of First Successful Submission: 2025-12-24 08:32:00

linear-equation-registers

Time of First Successful Submission: 2025-12-24 08:33:18

integer-division

Time of First Successful Submission: 2025-12-24 08:38:44

modulo-operation

Time of First Successful Submission: 2025-12-24 08:41:50

set-upper-byte

Time of First Successful Submission: 2025-12-24 09:19:25

efficient-modulo

Time of First Successful Submission: 2025-12-24 09:37:46

byte-extraction

Time of First Successful Submission: 2025-12-24 09:42:58

bitwise-and

Time of First Successful Submission: 2025-12-24 09:45:10

check-even

Time of First Successful Submission: 2025-12-24 10:20:21

memory-read

Time of First Successful Submission: 2025-12-24 10:27:32

memory-write

Time of First Successful Submission: 2025-12-24 10:28:06

memory-increment

Time of First Successful Submission: 2025-12-24 10:30:21

byte-access

Time of First Successful Submission: 2025-12-24 10:31:56

memory-size-access

Time of First Successful Submission: 2025-12-24 10:33:13

little-endian-write

Time of First Successful Submission: 2025-12-24 10:35:08

memory-sum

Time of First Successful Submission: 2025-12-24 10:36:39

stack-subtraction

Time of First Successful Submission: 2025-12-24 10:39:09

swap-stack-values

Time of First Successful Submission: 2025-12-24 10:39:56

average-stack-values

Time of First Successful Submission: 2025-12-24 10:41:55

absolute-jump

Time of First Successful Submission: 2025-12-24 10:45:56

relative-jump

Time of First Successful Submission: 2025-12-24 10:49:16

jump-trampoline

Time of First Successful Submission: 2025-12-24 10:52:18

conditional-jump

Time of First Successful Submission: 2025-12-24 11:14:48

indirect-jump

Time of First Successful Submission: 2025-12-24 11:27:29

average-loop

Time of First Successful Submission: 2025-12-24 11:44:21

count-non-zero

Time of First Successful Submission: 2025-12-24 13:21:19

string-lower

Time of First Successful Submission: 2025-12-24 13:55:04

most-common-byte

Time of First Successful Submission: 2025-12-31 11:01:07

Exit

Time of First Successful Submission: 2025-12-31 15:20:51

Socket

Time of First Successful Submission: 2026-01-08 16:14:34

Bind

Time of First Successful Submission: 2026-01-08 16:22:24

Listen

Time of First Successful Submission: 2026-01-08 16:27:07

Accept

Time of First Successful Submission: 2026-01-08 16:30:45

Debugging Programs

Time of First Successful Submission: 2025-12-31 11:09:29

Inspecting Registers

Time of First Successful Submission: 2025-12-31 11:13:28

Examining Memory

Time of First Successful Submission: 2025-12-31 11:29:02

Setting Breakpoints

Time of First Successful Submission: 2025-12-31 11:35:01

GDB Scripting

Time of First Successful Submission: 2025-12-31 14:11:22

Modifying Data

Time of First Successful Submission: 2025-12-31 14:26:45

Modifying Execution

Time of First Successful Submission: 2025-12-31 14:27:38

Broken Functions

Time of First Successful Submission: 2025-12-31 14:32:32

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-11-24 16:26:20

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-24 16:27:50

Using the GUI Desktop

Time of First Successful Submission: 2025-11-24 16:29:25

Pasting into the Desktop

Time of First Successful Submission: 2025-12-15 08:59:31

Connecting over SSH

Time of First Successful Submission: 2025-12-15 09:19:51

Restarting Challenges

Time of First Successful Submission: 2025-12-15 09:18:22

Getting Help

Time of First Successful Submission: 2025-12-15 09:21:47

Challenge Programs

Time of First Successful Submission: 2025-12-15 09:22:44

The Flag File

Time of First Successful Submission: 2025-12-15 09:24:26

Using Privileged Mode

Time of First Successful Submission: 2025-12-15 09:28:16

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-15 09:30:06

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-15 09:31:36