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1 / 202 21902 / 22791


Triple Dereference

Time of First Successful Submission: 2025-12-17 01:08:06


Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-12-13 02:39:59

Command Arguments

Time of First Successful Submission: 2025-12-13 02:41:02

Command History

Time of First Successful Submission: 2025-12-13 02:41:55

The Root Path

Time of First Successful Submission: 2025-12-13 02:44:12

Absolute Paths

Time of First Successful Submission: 2025-12-13 02:44:51

Changing position

Time of First Successful Submission: 2025-12-13 02:46:40

Changing to an Absolute Path

Time of First Successful Submission: 2025-12-13 02:48:06

Relative Paths

Time of First Successful Submission: 2025-12-13 02:51:33

Cat

Time of First Successful Submission: 2025-12-13 04:22:42

Ls

Time of First Successful Submission: 2025-12-13 04:37:32

Ls All

Time of First Successful Submission: 2025-12-13 04:47:59

Find

Time of First Successful Submission: 2025-12-13 04:57:36

Piping Echo

Time of First Successful Submission: 2025-12-14 16:54:52

Piping Stdout

Time of First Successful Submission: 2025-12-14 16:55:58

Piping Stdin

Time of First Successful Submission: 2025-12-14 18:10:08


Start Here

11 / 12 7303 / 43261


Using the Terminal

Time of First Successful Submission: 2025-12-12 23:00:24

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-12 23:05:23

Using the GUI Desktop

Time of First Successful Submission: 2025-12-12 23:27:53

Pasting into the Desktop

Time of First Successful Submission: 2025-12-12 23:29:39

Restarting Challenges

Time of First Successful Submission: 2025-12-12 23:37:31

Challenge Programs

Time of First Successful Submission: 2025-12-12 23:53:55

The Flag File

Time of First Successful Submission: 2025-12-12 23:57:08

Using Privileged Mode

Time of First Successful Submission: 2025-12-13 01:06:46

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-13 01:14:38

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-13 01:29:15


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-12-13 02:39:59

Intro to Arguments

Time of First Successful Submission: 2025-12-13 02:41:02

Command History

Time of First Successful Submission: 2025-12-13 02:41:55

The Root

Time of First Successful Submission: 2025-12-13 02:44:12

Program and absolute paths

Time of First Successful Submission: 2025-12-13 02:44:51

Position thy self

Time of First Successful Submission: 2025-12-13 02:46:40

Position elsewhere

Time of First Successful Submission: 2025-12-13 02:48:06

implicit relative paths, from /

Time of First Successful Submission: 2025-12-13 02:51:33

explicit relative paths, from /

Time of First Successful Submission: 2025-12-13 03:00:11

implicit relative path

Time of First Successful Submission: 2025-12-13 03:01:24

home sweet home

Time of First Successful Submission: 2025-12-13 03:09:57

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-13 04:22:42

catting absolute paths

Time of First Successful Submission: 2025-12-13 04:23:51

more catting practice

Time of First Successful Submission: 2025-12-13 04:26:01

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-13 04:28:09

comparing files

Time of First Successful Submission: 2025-12-13 04:36:46

listing files

Time of First Successful Submission: 2025-12-13 04:37:32

touching files

Time of First Successful Submission: 2025-12-13 04:38:45

removing files

Time of First Successful Submission: 2025-12-13 04:42:55

moving files

Time of First Successful Submission: 2025-12-13 04:44:05

copying files

Time of First Successful Submission: 2025-12-13 04:45:01

hidden files

Time of First Successful Submission: 2025-12-13 04:47:59

An Epic Filesystem Quest

Time of First Successful Submission: 2025-12-13 04:53:13

making directories

Time of First Successful Submission: 2025-12-13 04:54:09

finding files

Time of First Successful Submission: 2025-12-13 04:57:36

linking files

Time of First Successful Submission: 2025-12-13 05:35:49

Learning From Documentation

Time of First Successful Submission: 2025-12-13 05:37:19

Learning Complex Usage

Time of First Successful Submission: 2025-12-13 05:38:27

Reading Manuals

Time of First Successful Submission: 2025-12-13 05:40:37

Searching Manuals

Time of First Successful Submission: 2025-12-13 05:41:52

Searching For Manuals

Time of First Successful Submission: 2025-12-13 05:47:10

Helpful Programs

Time of First Successful Submission: 2025-12-13 05:48:55

Help for Builtins

Time of First Successful Submission: 2025-12-13 05:50:41

Matching with *

Time of First Successful Submission: 2025-12-14 04:06:16

Matching with ?

Time of First Successful Submission: 2025-12-14 04:21:13

Matching with []

Time of First Successful Submission: 2025-12-14 04:22:59

Matching paths with []

Time of First Successful Submission: 2025-12-14 04:54:59

Multiple globs

Time of First Successful Submission: 2025-12-14 04:56:21

Mixing globs

Time of First Successful Submission: 2025-12-14 05:31:52

Exclusionary globbing

Time of First Successful Submission: 2025-12-14 05:15:11

Tab completion

Time of First Successful Submission: 2025-12-14 05:16:32

Multiple options for tab completion

Time of First Successful Submission: 2025-12-14 05:28:57

Tab completion on commands

Time of First Successful Submission: 2025-12-14 05:29:29

Redirecting output

Time of First Successful Submission: 2025-12-14 16:54:52

Redirecting more output

Time of First Successful Submission: 2025-12-14 16:55:58

Appending output

Time of First Successful Submission: 2025-12-14 16:57:07

Redirecting errors

Time of First Successful Submission: 2025-12-14 17:20:14

Redirecting input

Time of First Successful Submission: 2025-12-14 18:10:08

Grepping stored results

Time of First Successful Submission: 2025-12-14 18:47:09

Grepping live output

Time of First Successful Submission: 2025-12-14 18:47:50

Grepping errors

Time of First Successful Submission: 2025-12-14 18:54:00

Filtering with grep -v

Time of First Successful Submission: 2025-12-14 18:56:05

Filtering with sed

Time of First Successful Submission: 2025-12-14 18:57:29

Duplicating piped data with tee

Time of First Successful Submission: 2025-12-14 19:09:05

Process substitution for input

Time of First Successful Submission: 2025-12-14 19:30:19

Writing to multiple programs

Time of First Successful Submission: 2025-12-14 20:36:43

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-14 21:04:45

Named pipes

Time of First Successful Submission: 2025-12-14 21:21:35

Printing Variables

Time of First Successful Submission: 2025-12-14 21:36:56

Setting Variables

Time of First Successful Submission: 2025-12-14 21:38:26

Multi-word Variables

Time of First Successful Submission: 2025-12-14 21:42:43

Exporting Variables

Time of First Successful Submission: 2025-12-14 22:27:29

Printing Exported Variables

Time of First Successful Submission: 2025-12-14 22:16:45

Storing Command Output

Time of First Successful Submission: 2025-12-14 22:18:11

Reading Input

Time of First Successful Submission: 2025-12-14 22:20:41

Reading Files

Time of First Successful Submission: 2025-12-14 22:26:26

Translating characters

Time of First Successful Submission: 2025-12-15 01:25:30

Deleting characters

Time of First Successful Submission: 2025-12-15 01:26:40

Deleting newlines

Time of First Successful Submission: 2025-12-15 01:33:38

Extracting the first lines with head

Time of First Successful Submission: 2025-12-15 01:34:30

Extracting specific sections of text

Time of First Successful Submission: 2025-12-15 01:44:56

Sorting data

Time of First Successful Submission: 2025-12-15 01:50:24

Listing Processes

Time of First Successful Submission: 2025-12-15 02:03:29

Killing Processes

Time of First Successful Submission: 2025-12-15 02:05:56

Interrupting Processes

Time of First Successful Submission: 2025-12-15 02:34:10

Killing Misbehaving Processes

Time of First Successful Submission: 2025-12-15 02:37:12

Suspending Processes

Time of First Successful Submission: 2025-12-15 03:03:58

Resuming Processes

Time of First Successful Submission: 2025-12-15 03:04:54

Backgrounding Processes

Time of First Successful Submission: 2025-12-15 03:48:08

Foregrounding Processes

Time of First Successful Submission: 2025-12-15 03:49:31

Starting Backgrounded Processes

Time of First Successful Submission: 2025-12-15 03:50:17

Process Exit Codes

Time of First Successful Submission: 2025-12-15 03:51:32

Becoming root with su

Time of First Successful Submission: 2025-12-15 03:59:58

Other users with su

Time of First Successful Submission: 2025-12-15 04:01:55

Cracking passwords

Time of First Successful Submission: 2025-12-15 04:05:16

Using sudo

Time of First Successful Submission: 2025-12-15 04:07:54

Changing File Ownership

Time of First Successful Submission: 2025-12-15 14:09:54

Groups and Files

Time of First Successful Submission: 2025-12-15 14:26:58

Fun With Groups Names

Time of First Successful Submission: 2025-12-15 14:36:30

Changing Permissions

Time of First Successful Submission: 2025-12-15 15:06:58

Executable Files

Time of First Successful Submission: 2025-12-15 18:53:55

Permission Tweaking Practice

Time of First Successful Submission: 2025-12-15 19:05:09

Permissions Setting Practice

Time of First Successful Submission: 2025-12-15 19:14:05

The SUID Bit

Time of First Successful Submission: 2025-12-15 19:37:23

Chaining with Semicolons

Time of First Successful Submission: 2025-12-15 19:46:17

Building on Success

Time of First Successful Submission: 2025-12-15 19:47:50

Handling Failure

Time of First Successful Submission: 2025-12-15 19:50:32

Your First Shell Script

Time of First Successful Submission: 2025-12-15 19:52:33

Redirecting Script Output

Time of First Successful Submission: 2025-12-15 20:07:47

Executable Shell Scripts

Time of First Successful Submission: 2025-12-15 20:09:11

Understanding Shebangs

Time of First Successful Submission: 2025-12-15 20:11:27

Scripting with Arguments

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

Scripting with Conditionals

Time of First Successful Submission: 2025-12-15 20:45:19

Scripting with Default Cases

Time of First Successful Submission: 2025-12-15 20:46:48

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-12-15 20:49:03

Reading Shell Scripts

Time of First Successful Submission: 2025-12-15 20:50:20

Launching Screen

Time of First Successful Submission: 2025-12-15 22:17:08

Detaching and Attaching

Time of First Successful Submission: 2025-12-15 22:18:53

Finding Sessions

Time of First Successful Submission: 2025-12-15 22:20:23

Switching Windows

Time of First Successful Submission: 2025-12-15 22:42:58

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-12-15 22:44:18

Switching Windows (tmux)

Time of First Successful Submission: 2025-12-15 22:45:19

The PATH Variable

Time of First Successful Submission: 2025-12-15 22:51:39

Setting PATH

Time of First Successful Submission: 2025-12-15 22:53:05

Finding Commands

Time of First Successful Submission: 2025-12-15 22:57:06

Adding Commands

Time of First Successful Submission: 2025-12-15 23:23:40

Hijacking Commands

Time of First Successful Submission: 2025-12-15 23:30:49

Bashrc Backdoor

Time of First Successful Submission: 2025-12-16 03:02:26

Sniffing Input

Time of First Successful Submission: 2025-12-16 03:15:55

Overshared Directories

Time of First Successful Submission: 2025-12-16 03:44:48

Tricky Linking

Time of First Successful Submission: 2025-12-16 04:36:37

Sniffing Process Arguments

Time of First Successful Submission: 2025-12-16 04:49:48

Snooping on Configurations

Time of First Successful Submission: 2025-12-16 04:52:22

The Fork Bomb

Time of First Successful Submission: 2025-12-16 05:08:24

Disk-Space Doomsday

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

rm -rf /

Time of First Successful Submission: 2025-12-16 05:17:12

Life after rm -rf /

Time of First Successful Submission: 2025-12-16 05:21:48

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-12-16 05:25:01


Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-16 20:37:38

Your First Syscall

Time of First Successful Submission: 2025-12-16 21:11:14

Exit Codes

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

Building Executables

Time of First Successful Submission: 2025-12-16 21:22:39

Moving Between Registers

Time of First Successful Submission: 2025-12-16 21:25:31

Loading From Memory

Time of First Successful Submission: 2025-12-16 22:18:33

More Loading Practice

Time of First Successful Submission: 2025-12-16 22:19:20

Dereferencing Pointers

Time of First Successful Submission: 2025-12-17 00:17:23

Dereferencing Yourself

Time of First Successful Submission: 2025-12-17 00:51:38

Dereferencing with Offsets

Time of First Successful Submission: 2025-12-17 00:56:21

Stored Addresses

Time of First Successful Submission: 2025-12-17 01:00:57

Double Dereference

Time of First Successful Submission: 2025-12-17 01:07:01

Tracing Syscalls

Time of First Successful Submission: 2025-12-16 21:43:35

Starting GDB

Time of First Successful Submission: 2025-12-16 21:44:38

Starting Programs in GDB

Time of First Successful Submission: 2025-12-16 21:46:30

Writing Output

Time of First Successful Submission: 2025-12-17 01:46:56

Chaining Syscalls

Time of First Successful Submission: 2025-12-17 01:48:46

Writing Strings

Time of First Successful Submission: 2025-12-17 01:49:32

Reading Data

Time of First Successful Submission: 2025-12-17 02:01:02

set-register

Time of First Successful Submission: 2025-12-17 02:42:08

set-multiple-registers

Time of First Successful Submission: 2025-12-17 02:44:32

add-to-register

Time of First Successful Submission: 2025-12-17 02:46:12

linear-equation-registers

Time of First Successful Submission: 2025-12-17 02:56:29

integer-division

Time of First Successful Submission: 2025-12-17 03:00:34

modulo-operation

Time of First Successful Submission: 2025-12-17 03:05:33

set-upper-byte

Time of First Successful Submission: 2025-12-17 03:07:24

efficient-modulo

Time of First Successful Submission: 2025-12-17 03:34:17

byte-extraction

Time of First Successful Submission: 2025-12-17 03:41:57

bitwise-and

Time of First Successful Submission: 2025-12-17 03:54:24

check-even

Time of First Successful Submission: 2025-12-17 04:14:44

memory-read

Time of First Successful Submission: 2025-12-17 04:38:42

memory-write

Time of First Successful Submission: 2025-12-17 04:40:32

memory-increment

Time of First Successful Submission: 2025-12-17 04:49:05

byte-access

Time of First Successful Submission: 2025-12-17 04:59:27

memory-size-access

Time of First Successful Submission: 2025-12-17 15:05:09

little-endian-write

Time of First Successful Submission: 2025-12-18 02:25:37

memory-sum

Time of First Successful Submission: 2025-12-18 02:40:22

stack-subtraction

Time of First Successful Submission: 2025-12-18 03:33:42

swap-stack-values

Time of First Successful Submission: 2025-12-18 03:41:06

average-stack-values

Time of First Successful Submission: 2025-12-18 03:54:41

absolute-jump

Time of First Successful Submission: 2025-12-18 03:56:46

relative-jump

Time of First Successful Submission: 2025-12-18 04:29:02

jump-trampoline

Time of First Successful Submission: 2025-12-18 04:34:33

conditional-jump

Time of First Successful Submission: 2025-12-18 23:14:13

indirect-jump

Time of First Successful Submission: 2025-12-20 03:27:47

average-loop

Time of First Successful Submission: 2025-12-20 04:18:59

count-non-zero

Time of First Successful Submission: 2025-12-20 05:17:14

string-lower

Time of First Successful Submission: 2026-01-08 02:55:08

most-common-byte

Time of First Successful Submission: 2026-01-10 02:17:15

Exit

Time of First Successful Submission: 2026-01-21 19:05:00

Socket

Time of First Successful Submission: 2026-01-23 03:17:09

Bind

Time of First Successful Submission: 2026-01-27 04:34:01

Listen

Time of First Successful Submission: 2026-01-28 02:51:26

Accept

Time of First Successful Submission: 2026-01-29 05:06:24

Static Response

Time of First Successful Submission: 2026-02-04 04:39:13

Dynamic Response

Time of First Successful Submission: 2026-02-07 03:24:28

Debugging Programs

Time of First Successful Submission: 2026-01-10 20:34:49

Inspecting Registers

Time of First Successful Submission: 2026-01-10 20:50:26

Examining Memory

Time of First Successful Submission: 2026-01-13 04:33:26

Setting Breakpoints

Time of First Successful Submission: 2026-01-17 03:17:57

GDB Scripting

Time of First Successful Submission: 2026-01-18 02:45:00

Modifying Data

Time of First Successful Submission: 2026-01-21 03:28:02

Modifying Execution

Time of First Successful Submission: 2026-01-21 05:39:49

Broken Functions

Time of First Successful Submission: 2026-01-21 06:11:17


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-12-12 23:00:24

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-12 23:05:23

Using the GUI Desktop

Time of First Successful Submission: 2025-12-12 23:27:53

Pasting into the Desktop

Time of First Successful Submission: 2025-12-12 23:29:39

Connecting over SSH

Time of First Successful Submission: 2025-12-12 23:33:57

Restarting Challenges

Time of First Successful Submission: 2025-12-12 23:37:31

Challenge Programs

Time of First Successful Submission: 2025-12-12 23:53:55

The Flag File

Time of First Successful Submission: 2025-12-12 23:57:08

Using Privileged Mode

Time of First Successful Submission: 2025-12-13 01:06:46

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-13 01:14:38

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-13 01:29:15