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Triple Dereference

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

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-12-14 22:10:01

Command Arguments

Time of First Successful Submission: 2025-12-14 22:15:25

Command History

Time of First Successful Submission: 2025-12-14 22:16:57

The Root Path

Time of First Successful Submission: 2025-12-14 22:18:25

Absolute Paths

Time of First Successful Submission: 2025-12-14 22:19:21

Changing position

Time of First Successful Submission: 2025-12-14 22:33:56

Changing to an Absolute Path

Time of First Successful Submission: 2025-12-14 22:42:51

Relative Paths

Time of First Successful Submission: 2025-12-15 07:53:08

Cat

Time of First Successful Submission: 2025-12-15 08:03:02

Ls

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

Ls All

Time of First Successful Submission: 2025-12-15 08:22:05

Find

Time of First Successful Submission: 2025-12-15 08:36:44

Piping Echo

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

Piping Stdout

Time of First Successful Submission: 2025-12-15 09:55:51

Piping Stdin

Time of First Successful Submission: 2025-12-15 10:01:31

Start Here

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Using the Terminal

Time of First Successful Submission: 2025-12-14 23:19:27

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-14 23:22:38

Using the GUI Desktop

Time of First Successful Submission: 2025-12-14 23:29:56

Pasting into the Desktop

Time of First Successful Submission: 2025-12-14 23:32:02

Restarting Challenges

Time of First Successful Submission: 2025-12-14 23:40:07

Challenge Programs

Time of First Successful Submission: 2025-12-14 23:41:19

The Flag File

Time of First Successful Submission: 2025-12-14 23:46:21

Using Privileged Mode

Time of First Successful Submission: 2025-12-15 00:06:15

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-15 00:14:12

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-15 00:15:18

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-12-14 22:10:01

Intro to Arguments

Time of First Successful Submission: 2025-12-14 22:15:25

Command History

Time of First Successful Submission: 2025-12-14 22:16:57

The Root

Time of First Successful Submission: 2025-12-14 22:18:25

Program and absolute paths

Time of First Successful Submission: 2025-12-14 22:19:21

Position thy self

Time of First Successful Submission: 2025-12-14 22:33:56

Position elsewhere

Time of First Successful Submission: 2025-12-14 22:42:51

implicit relative paths, from /

Time of First Successful Submission: 2025-12-15 07:53:08

explicit relative paths, from /

Time of First Successful Submission: 2025-12-15 07:56:49

implicit relative path

Time of First Successful Submission: 2025-12-15 07:59:26

home sweet home

Time of First Successful Submission: 2025-12-15 08:01:19

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-15 08:03:02

catting absolute paths

Time of First Successful Submission: 2025-12-15 08:04:09

more catting practice

Time of First Successful Submission: 2025-12-15 08:06:39

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-15 08:07:51

comparing files

Time of First Successful Submission: 2025-12-15 08:09:07

listing files

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

touching files

Time of First Successful Submission: 2025-12-15 08:16:32

removing files

Time of First Successful Submission: 2025-12-15 08:17:40

moving files

Time of First Successful Submission: 2025-12-15 08:18:34

copying files

Time of First Successful Submission: 2025-12-15 08:19:57

hidden files

Time of First Successful Submission: 2025-12-15 08:22:05

An Epic Filesystem Quest

Time of First Successful Submission: 2025-12-15 08:31:27

making directories

Time of First Successful Submission: 2025-12-15 08:34:05

finding files

Time of First Successful Submission: 2025-12-15 08:36:44

linking files

Time of First Successful Submission: 2025-12-15 08:37:56

Learning From Documentation

Time of First Successful Submission: 2025-12-15 08:39:06

Learning Complex Usage

Time of First Successful Submission: 2025-12-15 08:39:53

Reading Manuals

Time of First Successful Submission: 2025-12-15 08:42:22

Searching Manuals

Time of First Successful Submission: 2025-12-15 08:45:04

Searching For Manuals

Time of First Successful Submission: 2025-12-15 08:47:25

Helpful Programs

Time of First Successful Submission: 2025-12-15 08:49:09

Help for Builtins

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

Matching with *

Time of First Successful Submission: 2025-12-15 09:04:29

Matching with ?

Time of First Successful Submission: 2025-12-15 09:09:00

Matching with []

Time of First Successful Submission: 2025-12-15 09:10:23

Matching paths with []

Time of First Successful Submission: 2025-12-15 09:11:32

Multiple globs

Time of First Successful Submission: 2025-12-15 09:13:24

Mixing globs

Time of First Successful Submission: 2025-12-15 09:39:10

Exclusionary globbing

Time of First Successful Submission: 2025-12-15 09:40:47

Tab completion

Time of First Successful Submission: 2025-12-15 09:42:24

Multiple options for tab completion

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

Tab completion on commands

Time of First Successful Submission: 2025-12-15 09:51:25

Redirecting output

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

Redirecting more output

Time of First Successful Submission: 2025-12-15 09:55:51

Appending output

Time of First Successful Submission: 2025-12-15 09:57:08

Redirecting errors

Time of First Successful Submission: 2025-12-15 09:58:26

Redirecting input

Time of First Successful Submission: 2025-12-15 10:01:31

Grepping stored results

Time of First Successful Submission: 2025-12-15 10:04:01

Grepping live output

Time of First Successful Submission: 2025-12-15 10:05:31

Grepping errors

Time of First Successful Submission: 2025-12-15 10:06:25

Filtering with grep -v

Time of First Successful Submission: 2025-12-15 10:07:37

Filtering with sed

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

Duplicating piped data with tee

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

Process substitution for input

Time of First Successful Submission: 2025-12-15 10:16:40

Writing to multiple programs

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

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-15 10:19:18

Named pipes

Time of First Successful Submission: 2025-12-15 10:23:25

Printing Variables

Time of First Successful Submission: 2025-12-15 10:26:06

Setting Variables

Time of First Successful Submission: 2025-12-15 10:27:20

Multi-word Variables

Time of First Successful Submission: 2025-12-15 10:28:24

Exporting Variables

Time of First Successful Submission: 2025-12-15 10:29:49

Printing Exported Variables

Time of First Successful Submission: 2025-12-15 10:30:43

Storing Command Output

Time of First Successful Submission: 2025-12-15 10:31:40

Reading Input

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

Reading Files

Time of First Successful Submission: 2025-12-15 10:34:57

Translating characters

Time of First Successful Submission: 2025-12-15 10:37:48

Deleting characters

Time of First Successful Submission: 2025-12-15 10:38:30

Deleting newlines

Time of First Successful Submission: 2025-12-15 10:39:17

Extracting the first lines with head

Time of First Successful Submission: 2025-12-15 10:40:04

Extracting specific sections of text

Time of First Successful Submission: 2025-12-15 10:41:28

Sorting data

Time of First Successful Submission: 2025-12-15 10:42:19

Listing Processes

Time of First Successful Submission: 2025-12-15 11:47:16

Killing Processes

Time of First Successful Submission: 2025-12-15 11:54:53

Interrupting Processes

Time of First Successful Submission: 2025-12-15 11:55:59

Killing Misbehaving Processes

Time of First Successful Submission: 2025-12-15 11:59:35

Suspending Processes

Time of First Successful Submission: 2025-12-15 12:00:49

Resuming Processes

Time of First Successful Submission: 2025-12-15 12:02:04

Backgrounding Processes

Time of First Successful Submission: 2025-12-15 12:03:23

Foregrounding Processes

Time of First Successful Submission: 2025-12-15 12:05:52

Starting Backgrounded Processes

Time of First Successful Submission: 2025-12-15 12:06:38

Process Exit Codes

Time of First Successful Submission: 2025-12-15 12:07:46

Becoming root with su

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

Other users with su

Time of First Successful Submission: 2025-12-15 12:10:38

Cracking passwords

Time of First Successful Submission: 2025-12-15 12:14:04

Using sudo

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

Changing File Ownership

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

Groups and Files

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

Fun With Groups Names

Time of First Successful Submission: 2025-12-15 12:19:34

Changing Permissions

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

Executable Files

Time of First Successful Submission: 2025-12-15 12:23:18

Permission Tweaking Practice

Time of First Successful Submission: 2025-12-15 12:30:18

Permissions Setting Practice

Time of First Successful Submission: 2025-12-15 12:36:21

The SUID Bit

Time of First Successful Submission: 2025-12-15 12:38:49

Chaining with Semicolons

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

Building on Success

Time of First Successful Submission: 2025-12-15 12:51:10

Handling Failure

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

Your First Shell Script

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

Redirecting Script Output

Time of First Successful Submission: 2025-12-15 13:00:05

Executable Shell Scripts

Time of First Successful Submission: 2025-12-15 13:02:11

Understanding Shebangs

Time of First Successful Submission: 2025-12-15 13:04:13

Scripting with Arguments

Time of First Successful Submission: 2025-12-15 13:06:18

Scripting with Conditionals

Time of First Successful Submission: 2025-12-15 13:08:24

Scripting with Default Cases

Time of First Successful Submission: 2025-12-15 13:10:25

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-12-15 13:12:38

Reading Shell Scripts

Time of First Successful Submission: 2025-12-15 13:14:06

Launching Screen

Time of First Successful Submission: 2025-12-15 13:19:59

Detaching and Attaching

Time of First Successful Submission: 2025-12-15 13:21:54

Finding Sessions

Time of First Successful Submission: 2025-12-15 13:24:20

Switching Windows

Time of First Successful Submission: 2025-12-15 13:27:12

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-12-15 13:28:42

Switching Windows (tmux)

Time of First Successful Submission: 2025-12-15 13:30:16

The PATH Variable

Time of First Successful Submission: 2025-12-15 13:31:27

Setting PATH

Time of First Successful Submission: 2025-12-15 13:32:19

Finding Commands

Time of First Successful Submission: 2025-12-15 13:33:44

Adding Commands

Time of First Successful Submission: 2025-12-15 13:35:13

Hijacking Commands

Time of First Successful Submission: 2025-12-15 13:36:38

Bashrc Backdoor

Time of First Successful Submission: 2025-12-15 13:38:05

Sniffing Input

Time of First Successful Submission: 2025-12-15 13:41:42

Overshared Directories

Time of First Successful Submission: 2025-12-15 13:48:40

Tricky Linking

Time of First Successful Submission: 2025-12-15 13:51:11

Sniffing Process Arguments

Time of First Successful Submission: 2025-12-15 13:53:41

Snooping on Configurations

Time of First Successful Submission: 2025-12-15 13:55:48

The Fork Bomb

Time of First Successful Submission: 2025-12-15 14:23:49

Disk-Space Doomsday

Time of First Successful Submission: 2025-12-15 14:27:31

rm -rf /

Time of First Successful Submission: 2025-12-15 15:05:20

Life after rm -rf /

Time of First Successful Submission: 2025-12-15 15:14:00

Finding meaning after rm -rf /

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

Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-14 17:22:29

Your First Syscall

Time of First Successful Submission: 2025-12-14 17:30:32

Exit Codes

Time of First Successful Submission: 2025-12-14 17:43:23

Building Executables

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

Moving Between Registers

Time of First Successful Submission: 2025-12-14 18:43:19

Loading From Memory

Time of First Successful Submission: 2025-12-15 00:52:41

More Loading Practice

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

Dereferencing Pointers

Time of First Successful Submission: 2025-12-15 15:26:17

Dereferencing Yourself

Time of First Successful Submission: 2025-12-15 15:27:13

Dereferencing with Offsets

Time of First Successful Submission: 2025-12-15 15:28:18

Stored Addresses

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

Double Dereference

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

Tracing Syscalls

Time of First Successful Submission: 2025-12-14 19:00:43

Starting GDB

Time of First Successful Submission: 2025-12-14 19:36:37

Starting Programs in GDB

Time of First Successful Submission: 2025-12-14 19:49:15

Writing Output

Time of First Successful Submission: 2025-12-15 15:36:52

Chaining Syscalls

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

Writing Strings

Time of First Successful Submission: 2025-12-15 15:39:24

Reading Data

Time of First Successful Submission: 2025-12-15 15:40:46

set-register

Time of First Successful Submission: 2025-12-15 15:48:34

set-multiple-registers

Time of First Successful Submission: 2025-12-15 16:13:05

add-to-register

Time of First Successful Submission: 2025-12-15 17:01:11

linear-equation-registers

Time of First Successful Submission: 2025-12-15 17:43:49

modulo-operation

Time of First Successful Submission: 2025-12-15 19:18:06

set-upper-byte

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

efficient-modulo

Time of First Successful Submission: 2025-12-15 19:20:40

byte-extraction

Time of First Successful Submission: 2025-12-15 19:22:58

bitwise-and

Time of First Successful Submission: 2025-12-15 19:24:18

check-even

Time of First Successful Submission: 2025-12-15 19:25:46

memory-read

Time of First Successful Submission: 2025-12-15 19:28:08

memory-write

Time of First Successful Submission: 2025-12-15 19:31:03

memory-increment

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

byte-access

Time of First Successful Submission: 2025-12-15 19:33:56

memory-size-access

Time of First Successful Submission: 2025-12-15 19:35:09

little-endian-write

Time of First Successful Submission: 2025-12-15 19:36:30

memory-sum

Time of First Successful Submission: 2025-12-15 19:37:52

stack-subtraction

Time of First Successful Submission: 2025-12-15 19:38:59

swap-stack-values

Time of First Successful Submission: 2025-12-15 19:41:12

average-stack-values

Time of First Successful Submission: 2025-12-15 19:42:36

absolute-jump

Time of First Successful Submission: 2025-12-15 19:43:44

relative-jump

Time of First Successful Submission: 2025-12-15 19:49:40

jump-trampoline

Time of First Successful Submission: 2025-12-15 20:01:39

indirect-jump

Time of First Successful Submission: 2025-12-16 11:35:47

average-loop

Time of First Successful Submission: 2025-12-16 13:58:00

string-lower

Time of First Successful Submission: 2025-12-16 21:22:41

most-common-byte

Time of First Successful Submission: 2025-12-16 21:24:40

Exit

Time of First Successful Submission: 2025-12-16 10:09:16

Socket

Time of First Successful Submission: 2025-12-16 09:55:28

Bind

Time of First Successful Submission: 2025-12-16 21:30:00

Listen

Time of First Successful Submission: 2025-12-16 21:32:29

Accept

Time of First Successful Submission: 2025-12-16 21:33:46

Static Response

Time of First Successful Submission: 2025-12-16 21:36:14

Debugging Programs

Time of First Successful Submission: 2025-12-15 20:28:59

Inspecting Registers

Time of First Successful Submission: 2025-12-15 20:32:59

Examining Memory

Time of First Successful Submission: 2025-12-15 20:38:45

Playing With Programs

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What's the password?

Time of First Successful Submission: 2025-12-17 12:47:48

... and again!

Time of First Successful Submission: 2025-12-17 13:01:00

Newline Troubles

Time of First Successful Submission: 2025-12-17 13:09:58

Reasoning about files

Time of First Successful Submission: 2025-12-17 13:14:05

Specifying Filenames

Time of First Successful Submission: 2025-12-17 13:31:30

Binary and Hex Encoding

Time of First Successful Submission: 2025-12-17 13:34:52

More Hex

Time of First Successful Submission: 2025-12-17 13:36:48

Decoding Hex

Time of First Successful Submission: 2025-12-17 13:50:23

Decoding Practice

Time of First Successful Submission: 2025-12-17 13:53:10

Encoding Practice

Time of First Successful Submission: 2025-12-17 13:55:10

Hex-encoding ASCII

Time of First Successful Submission: 2025-12-17 13:56:43

Nested Encoding

Time of First Successful Submission: 2025-12-17 13:59:22

Hex-encoding UTF-8

Time of First Successful Submission: 2025-12-17 14:01:18

UTF Mixups

Time of First Successful Submission: 2025-12-17 14:03:55

Modifying Encoded Data

Time of First Successful Submission: 2025-12-17 14:11:05

Decoding Base64

Time of First Successful Submission: 2025-12-17 14:12:51

Encoding Base64

Time of First Successful Submission: 2025-12-17 14:14:25

Dealing with Obfuscation

Time of First Successful Submission: 2025-12-17 14:17:51

Dealing with Obfuscation 2

Time of First Successful Submission: 2025-12-17 14:20:52

Your First HTTP Request

Time of First Successful Submission: 2025-12-17 14:31:57

Reading Flask

Time of First Successful Submission: 2025-12-17 14:37:20

Commented Data

Time of First Successful Submission: 2025-12-17 20:30:31

HTTP Metadata

Time of First Successful Submission: 2025-12-17 20:33:25

HTTP (netcat)

Time of First Successful Submission: 2025-12-17 20:35:06

HTTP Paths (netcat)

Time of First Successful Submission: 2025-12-17 20:37:10

HTTP (curl)

Time of First Successful Submission: 2025-12-17 20:39:20

HTTP (python)

Time of First Successful Submission: 2025-12-17 20:41:14

HTTP Host Header (python)

Time of First Successful Submission: 2025-12-17 20:43:31

HTTP Host Header (curl)

Time of First Successful Submission: 2025-12-17 20:44:56

HTTP Host Header (netcat)

Time of First Successful Submission: 2025-12-17 20:46:56

URL Encoding (netcat)

Time of First Successful Submission: 2025-12-17 20:49:04

HTTP GET Parameters

Time of First Successful Submission: 2025-12-17 20:50:35

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2025-12-17 20:52:01

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2025-12-17 20:53:23

HTTP Forms

Time of First Successful Submission: 2025-12-17 20:55:07

HTTP Forms (curl)

Time of First Successful Submission: 2025-12-17 20:56:39

HTTP Forms (netcat)

Time of First Successful Submission: 2025-12-17 20:57:55

HTTP Forms (python)

Time of First Successful Submission: 2025-12-17 20:59:55

HTTP Forms Without Forms

Time of First Successful Submission: 2025-12-17 21:02:24

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-12-14 23:19:27

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-14 23:22:38

Using the GUI Desktop

Time of First Successful Submission: 2025-12-14 23:29:56

Pasting into the Desktop

Time of First Successful Submission: 2025-12-14 23:32:02

Restarting Challenges

Time of First Successful Submission: 2025-12-14 23:40:07

Challenge Programs

Time of First Successful Submission: 2025-12-14 23:41:19

The Flag File

Time of First Successful Submission: 2025-12-14 23:46:21

Using Privileged Mode

Time of First Successful Submission: 2025-12-15 00:06:15

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-15 00:14:12

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-15 00:15:18