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Triple Dereference

Time of First Successful Submission: 2025-09-04 16:38:25

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-08-05 15:34:44

Command Arguments

Time of First Successful Submission: 2025-08-05 15:36:20

Command History

Time of First Successful Submission: 2025-08-05 15:37:12

The Root Path

Time of First Successful Submission: 2025-08-06 15:46:35

Absolute Paths

Time of First Successful Submission: 2025-08-06 15:47:05

Changing position

Time of First Successful Submission: 2025-08-06 15:51:06

Changing to an Absolute Path

Time of First Successful Submission: 2025-08-06 15:54:26

Relative Paths

Time of First Successful Submission: 2025-08-06 15:59:22

Cat

Time of First Successful Submission: 2025-08-07 15:15:26

Ls

Time of First Successful Submission: 2025-08-07 15:30:31

Ls All

Time of First Successful Submission: 2025-08-07 15:49:21

Find

Time of First Successful Submission: 2025-08-08 14:30:39

Piping Echo

Time of First Successful Submission: 2025-08-13 15:08:14

Piping Stdout

Time of First Successful Submission: 2025-08-13 15:57:56

Piping Stdin

Time of First Successful Submission: 2025-08-15 15:16:03

Intro to Cybersecurity

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SQLi 1

Time of First Successful Submission: 2026-02-14 16:15:13

SQLi 2

Time of First Successful Submission: 2026-02-14 16:27:25

level1

Time of First Successful Submission: 2025-10-05 13:40:02

level2

Time of First Successful Submission: 2025-10-05 13:41:01

level3

Time of First Successful Submission: 2025-10-05 13:43:15

level4

Time of First Successful Submission: 2025-10-05 13:48:56

level5

Time of First Successful Submission: 2025-10-05 14:09:33

level6

Time of First Successful Submission: 2025-10-05 16:50:11

level7

Time of First Successful Submission: 2025-10-05 16:51:24

level8

Time of First Successful Submission: 2025-10-05 16:53:13

level9

Time of First Successful Submission: 2025-10-05 16:54:21

level10

Time of First Successful Submission: 2025-10-05 16:58:05

level11

Time of First Successful Submission: 2025-10-05 17:05:42

level12

Time of First Successful Submission: 2025-10-05 17:11:15

level13

Time of First Successful Submission: 2025-10-05 17:38:08

level14

Time of First Successful Submission: 2025-10-05 17:40:14

level15

Time of First Successful Submission: 2025-10-05 17:42:16

level16

Time of First Successful Submission: 2025-10-05 17:50:46

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2025-10-03 02:15:46

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2025-10-03 02:23:30

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2025-10-03 02:35:26

Reading Endianness (Python)

Time of First Successful Submission: 2025-10-03 04:29:27

Reading Endianness (C)

Time of First Successful Submission: 2025-10-03 16:23:02

Reading Endianness (x86)

Time of First Successful Submission: 2025-10-03 16:59:50

Start Here

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Using the Terminal

Time of First Successful Submission: 2025-08-06 08:35:02

Using the VSCode Workspace

Time of First Successful Submission: 2025-08-03 15:54:18

Using the GUI Desktop

Time of First Successful Submission: 2025-08-03 15:56:42

Pasting into the Desktop

Time of First Successful Submission: 2025-08-03 15:58:25

Restarting Challenges

Time of First Successful Submission: 2025-08-03 16:02:21

Challenge Programs

Time of First Successful Submission: 2025-08-03 16:10:59

The Flag File

Time of First Successful Submission: 2025-08-03 16:20:16

Using Privileged Mode

Time of First Successful Submission: 2025-08-03 16:30:12

Persistent Home Directories - One

Time of First Successful Submission: 2025-08-03 16:44:54

Persistent Home Directories - Two

Time of First Successful Submission: 2025-08-03 16:45:59

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-08-05 15:34:44

Intro to Arguments

Time of First Successful Submission: 2025-08-05 15:36:20

Command History

Time of First Successful Submission: 2025-08-05 15:37:12

The Root

Time of First Successful Submission: 2025-08-06 15:46:35

Program and absolute paths

Time of First Successful Submission: 2025-08-06 15:47:05

Position thy self

Time of First Successful Submission: 2025-08-06 15:51:06

Position elsewhere

Time of First Successful Submission: 2025-08-06 15:54:26

implicit relative paths, from /

Time of First Successful Submission: 2025-08-06 15:59:22

explicit relative paths, from /

Time of First Successful Submission: 2025-08-06 16:03:02

implicit relative path

Time of First Successful Submission: 2025-08-06 16:04:42

home sweet home

Time of First Successful Submission: 2025-08-06 16:08:18

cat: not the pet, but the command!

Time of First Successful Submission: 2025-08-07 15:15:26

catting absolute paths

Time of First Successful Submission: 2025-08-07 15:18:04

more catting practice

Time of First Successful Submission: 2025-08-07 15:20:11

grepping for a needle in a haystack

Time of First Successful Submission: 2025-08-07 15:25:04

comparing files

Time of First Successful Submission: 2025-08-07 15:27:03

listing files

Time of First Successful Submission: 2025-08-07 15:30:31

touching files

Time of First Successful Submission: 2025-08-07 15:33:13

removing files

Time of First Successful Submission: 2025-08-07 15:37:50

moving files

Time of First Successful Submission: 2025-08-07 15:43:44

copying files

Time of First Successful Submission: 2025-12-18 07:04:59

hidden files

Time of First Successful Submission: 2025-08-07 15:49:21

An Epic Filesystem Quest

Time of First Successful Submission: 2025-08-08 14:13:18

making directories

Time of First Successful Submission: 2025-08-08 14:18:13

finding files

Time of First Successful Submission: 2025-08-08 14:30:39

linking files

Time of First Successful Submission: 2025-08-08 14:38:31

Learning From Documentation

Time of First Successful Submission: 2025-08-08 14:46:29

Learning Complex Usage

Time of First Successful Submission: 2025-08-08 14:52:54

Reading Manuals

Time of First Successful Submission: 2025-08-08 15:04:58

Searching Manuals

Time of First Successful Submission: 2025-08-08 15:09:39

Searching For Manuals

Time of First Successful Submission: 2025-08-08 15:27:45

Helpful Programs

Time of First Successful Submission: 2025-08-08 15:41:04

Help for Builtins

Time of First Successful Submission: 2025-08-08 15:45:09

Matching with *

Time of First Successful Submission: 2025-08-09 13:40:21

Matching with ?

Time of First Successful Submission: 2025-08-09 13:44:41

Matching with []

Time of First Successful Submission: 2025-08-09 13:55:26

Matching paths with []

Time of First Successful Submission: 2025-08-09 15:12:47

Multiple globs

Time of First Successful Submission: 2025-08-09 15:22:27

Mixing globs

Time of First Successful Submission: 2025-08-10 16:29:07

Exclusionary globbing

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

Tab completion

Time of First Successful Submission: 2025-08-13 14:56:36

Multiple options for tab completion

Time of First Successful Submission: 2025-08-13 15:03:07

Tab completion on commands

Time of First Successful Submission: 2025-08-13 15:04:41

Redirecting output

Time of First Successful Submission: 2025-08-13 15:08:14

Redirecting more output

Time of First Successful Submission: 2025-08-13 15:57:56

Appending output

Time of First Successful Submission: 2025-08-15 13:16:40

Redirecting errors

Time of First Successful Submission: 2025-08-15 14:34:18

Redirecting input

Time of First Successful Submission: 2025-08-15 15:16:03

Grepping stored results

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

Grepping live output

Time of First Successful Submission: 2025-08-15 15:27:09

Grepping errors

Time of First Successful Submission: 2025-08-15 15:31:30

Filtering with grep -v

Time of First Successful Submission: 2025-08-17 14:38:18

Filtering with sed

Time of First Successful Submission: 2025-12-18 06:54:05

Duplicating piped data with tee

Time of First Successful Submission: 2025-08-17 14:50:34

Process substitution for input

Time of First Successful Submission: 2025-08-17 14:58:25

Writing to multiple programs

Time of First Successful Submission: 2025-08-17 15:22:44

Split-piping stderr and stdout

Time of First Successful Submission: 2025-08-17 15:47:05

Named pipes

Time of First Successful Submission: 2025-08-17 15:55:38

Printing Variables

Time of First Successful Submission: 2025-08-18 13:58:18

Setting Variables

Time of First Successful Submission: 2025-08-18 14:03:57

Multi-word Variables

Time of First Successful Submission: 2025-08-18 14:22:05

Exporting Variables

Time of First Successful Submission: 2025-08-18 14:26:10

Printing Exported Variables

Time of First Successful Submission: 2025-08-18 14:32:02

Storing Command Output

Time of First Successful Submission: 2025-08-18 14:43:24

Reading Input

Time of First Successful Submission: 2025-08-18 15:23:54

Reading Files

Time of First Successful Submission: 2025-08-18 15:44:13

Translating characters

Time of First Successful Submission: 2025-08-19 03:02:38

Deleting characters

Time of First Successful Submission: 2025-08-19 03:05:23

Deleting newlines

Time of First Successful Submission: 2025-08-19 03:10:08

Extracting the first lines with head

Time of First Successful Submission: 2025-08-19 03:11:40

Extracting specific sections of text

Time of First Successful Submission: 2025-08-19 03:14:25

Sorting data

Time of First Successful Submission: 2025-08-19 03:19:45

Listing Processes

Time of First Successful Submission: 2025-08-19 08:17:13

Killing Processes

Time of First Successful Submission: 2025-08-19 08:22:04

Interrupting Processes

Time of First Successful Submission: 2025-08-19 08:32:04

Killing Misbehaving Processes

Time of First Successful Submission: 2025-08-19 08:31:04

Suspending Processes

Time of First Successful Submission: 2025-08-19 08:33:22

Resuming Processes

Time of First Successful Submission: 2025-08-19 08:44:13

Backgrounding Processes

Time of First Successful Submission: 2025-08-19 08:50:48

Foregrounding Processes

Time of First Successful Submission: 2025-08-19 08:53:26

Starting Backgrounded Processes

Time of First Successful Submission: 2025-08-19 08:55:42

Process Exit Codes

Time of First Successful Submission: 2025-08-19 08:57:27

Becoming root with su

Time of First Successful Submission: 2025-08-19 09:10:34

Other users with su

Time of First Successful Submission: 2025-08-19 09:11:33

Cracking passwords

Time of First Successful Submission: 2025-08-19 09:18:11

Using sudo

Time of First Successful Submission: 2025-08-19 09:31:18

Changing File Ownership

Time of First Successful Submission: 2025-08-19 14:38:43

Groups and Files

Time of First Successful Submission: 2025-08-19 14:40:56

Fun With Groups Names

Time of First Successful Submission: 2025-08-19 14:42:47

Changing Permissions

Time of First Successful Submission: 2025-08-19 14:50:24

Executable Files

Time of First Successful Submission: 2025-08-19 14:57:36

Permission Tweaking Practice

Time of First Successful Submission: 2025-08-19 15:10:53

Permissions Setting Practice

Time of First Successful Submission: 2025-08-19 15:31:19

The SUID Bit

Time of First Successful Submission: 2025-08-19 15:56:47

Chaining with Semicolons

Time of First Successful Submission: 2025-08-19 15:59:37

Building on Success

Time of First Successful Submission: 2025-08-19 16:00:44

Handling Failure

Time of First Successful Submission: 2025-08-19 16:01:17

Your First Shell Script

Time of First Successful Submission: 2025-08-19 16:08:23

Redirecting Script Output

Time of First Successful Submission: 2025-08-20 09:23:16

Executable Shell Scripts

Time of First Successful Submission: 2025-08-20 09:29:05

Understanding Shebangs

Time of First Successful Submission: 2025-08-20 09:39:12

Scripting with Arguments

Time of First Successful Submission: 2025-08-20 09:47:03

Scripting with Conditionals

Time of First Successful Submission: 2025-08-20 09:54:34

Scripting with Default Cases

Time of First Successful Submission: 2025-08-20 10:01:35

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-08-20 10:08:34

Reading Shell Scripts

Time of First Successful Submission: 2025-12-18 06:50:33

Launching Screen

Time of First Successful Submission: 2025-08-20 13:30:35

Detaching and Attaching

Time of First Successful Submission: 2025-08-20 13:34:43

Finding Sessions

Time of First Successful Submission: 2025-08-20 13:43:29

Switching Windows

Time of First Successful Submission: 2025-08-20 13:44:47

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-08-20 13:47:57

Switching Windows (tmux)

Time of First Successful Submission: 2025-08-20 13:49:59

The PATH Variable

Time of First Successful Submission: 2025-08-20 13:55:20

Setting PATH

Time of First Successful Submission: 2025-08-20 13:57:17

Finding Commands

Time of First Successful Submission: 2025-08-20 14:01:38

Adding Commands

Time of First Successful Submission: 2025-08-20 14:12:06

Hijacking Commands

Time of First Successful Submission: 2025-08-20 14:21:00

Bashrc Backdoor

Time of First Successful Submission: 2025-08-20 14:28:13

Sniffing Input

Time of First Successful Submission: 2025-08-21 13:23:57

Overshared Directories

Time of First Successful Submission: 2025-08-22 14:31:13

Tricky Linking

Time of First Successful Submission: 2025-08-22 16:10:36

Sniffing Process Arguments

Time of First Successful Submission: 2025-08-23 18:22:11

Snooping on Configurations

Time of First Successful Submission: 2025-08-23 18:31:06

The Fork Bomb

Time of First Successful Submission: 2025-08-24 04:03:33

Disk-Space Doomsday

Time of First Successful Submission: 2025-08-24 04:14:38

rm -rf /

Time of First Successful Submission: 2025-08-24 04:21:16

Life after rm -rf /

Time of First Successful Submission: 2025-08-24 04:28:17

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-08-24 04:35:30

Computing 101

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Your First Register

Time of First Successful Submission: 2025-08-27 15:09:26

Your First Syscall

Time of First Successful Submission: 2025-08-27 15:14:18

Exit Codes

Time of First Successful Submission: 2025-08-27 15:23:35

Building Executables

Time of First Successful Submission: 2025-08-27 15:35:04

Moving Between Registers

Time of First Successful Submission: 2025-08-27 15:39:11

Loading From Memory

Time of First Successful Submission: 2025-08-31 15:07:21

More Loading Practice

Time of First Successful Submission: 2025-08-31 15:08:49

Dereferencing Pointers

Time of First Successful Submission: 2025-08-31 15:16:27

Dereferencing Yourself

Time of First Successful Submission: 2025-09-04 16:24:21

Dereferencing with Offsets

Time of First Successful Submission: 2025-09-04 16:23:48

Stored Addresses

Time of First Successful Submission: 2025-09-04 16:32:16

Double Dereference

Time of First Successful Submission: 2025-09-04 16:36:00

Tracing Syscalls

Time of First Successful Submission: 2025-08-27 15:44:35

Starting GDB

Time of First Successful Submission: 2025-08-27 15:47:13

Starting Programs in GDB

Time of First Successful Submission: 2025-08-27 15:50:05

Writing Output

Time of First Successful Submission: 2025-09-05 08:23:58

Chaining Syscalls

Time of First Successful Submission: 2025-09-05 08:34:38

Writing Strings

Time of First Successful Submission: 2025-09-05 08:39:02

Reading Data

Time of First Successful Submission: 2025-09-05 08:44:25

set-register

Time of First Successful Submission: 2025-09-07 17:20:47

set-multiple-registers

Time of First Successful Submission: 2025-09-07 17:28:05

add-to-register

Time of First Successful Submission: 2025-09-07 17:32:55

linear-equation-registers

Time of First Successful Submission: 2025-09-12 03:29:52

integer-division

Time of First Successful Submission: 2025-09-12 03:44:23

modulo-operation

Time of First Successful Submission: 2025-09-12 04:21:22

set-upper-byte

Time of First Successful Submission: 2025-09-12 04:26:29

efficient-modulo

Time of First Successful Submission: 2025-09-12 08:44:43

byte-extraction

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

bitwise-and

Time of First Successful Submission: 2025-09-12 09:22:20

check-even

Time of First Successful Submission: 2025-09-13 08:15:28

memory-read

Time of First Successful Submission: 2025-09-13 08:24:36

memory-write

Time of First Successful Submission: 2025-09-13 08:26:13

memory-increment

Time of First Successful Submission: 2025-09-13 08:35:27

byte-access

Time of First Successful Submission: 2025-09-14 22:54:24

memory-size-access

Time of First Successful Submission: 2025-09-14 22:57:22

little-endian-write

Time of First Successful Submission: 2025-09-14 23:25:17

memory-sum

Time of First Successful Submission: 2025-09-14 23:51:38

stack-subtraction

Time of First Successful Submission: 2025-09-15 00:06:03

swap-stack-values

Time of First Successful Submission: 2025-09-15 00:21:55

average-stack-values

Time of First Successful Submission: 2025-09-15 03:28:33

absolute-jump

Time of First Successful Submission: 2025-09-15 04:11:08

relative-jump

Time of First Successful Submission: 2025-09-16 03:41:20

jump-trampoline

Time of First Successful Submission: 2025-09-16 04:28:37

conditional-jump

Time of First Successful Submission: 2025-09-16 09:56:59

indirect-jump

Time of First Successful Submission: 2025-09-17 03:34:28

average-loop

Time of First Successful Submission: 2025-09-17 04:17:09

count-non-zero

Time of First Successful Submission: 2025-09-17 16:41:43

Exit

Time of First Successful Submission: 2025-09-19 14:33:53

Socket

Time of First Successful Submission: 2025-09-19 14:42:22

Debugging Programs

Time of First Successful Submission: 2025-09-19 13:35:52

Inspecting Registers

Time of First Successful Submission: 2025-09-19 14:01:36

Playing With Programs

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What's the password?

Time of First Successful Submission: 2025-08-04 14:44:03

... and again!

Time of First Successful Submission: 2025-08-04 15:02:01

Newline Troubles

Time of First Successful Submission: 2025-08-04 15:11:41

Reasoning about files

Time of First Successful Submission: 2025-08-04 15:40:59

Specifying Filenames

Time of First Successful Submission: 2025-08-05 15:31:43

Binary and Hex Encoding

Time of First Successful Submission: 2025-09-19 15:29:25

More Hex

Time of First Successful Submission: 2025-09-19 15:30:50

Decoding Hex

Time of First Successful Submission: 2025-09-19 15:33:14

Decoding Practice

Time of First Successful Submission: 2025-09-19 15:41:33

Encoding Practice

Time of First Successful Submission: 2025-09-19 15:46:17

Hex-encoding ASCII

Time of First Successful Submission: 2025-09-19 15:54:50

Your First HTTP Request

Time of First Successful Submission: 2025-09-21 08:10:58

Reading Flask

Time of First Successful Submission: 2025-09-21 08:44:21

cat

Time of First Successful Submission: 2026-04-06 07:28:07

more

Time of First Successful Submission: 2026-04-06 07:29:53

less

Time of First Successful Submission: 2026-04-06 07:30:44

tail

Time of First Successful Submission: 2026-04-06 07:32:56

head

Time of First Successful Submission: 2026-04-06 07:34:19

SQL Queries

Time of First Successful Submission: 2025-09-05 04:41:59

Filtering SQL

Time of First Successful Submission: 2025-09-05 04:35:47

Choosing Columns

Time of First Successful Submission: 2025-09-05 04:40:20

Exclusionary Filtering

Time of First Successful Submission: 2025-09-29 07:10:49

Filtering Strings

Time of First Successful Submission: 2025-09-29 07:20:44

Filtering on Expressions

Time of First Successful Submission: 2025-09-29 21:23:01

SELECTing Expressions

Time of First Successful Submission: 2025-09-29 22:11:18

Composite Conditions

Time of First Successful Submission: 2025-09-29 22:20:04

Reaching Your LIMITs

Time of First Successful Submission: 2025-09-29 22:33:35

Querying Metadata

Time of First Successful Submission: 2025-09-29 22:38:00

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-08-06 08:35:02

Using the VSCode Workspace

Time of First Successful Submission: 2025-08-03 15:54:18

Using the GUI Desktop

Time of First Successful Submission: 2025-08-03 15:56:42

Pasting into the Desktop

Time of First Successful Submission: 2025-08-03 15:58:25

Restarting Challenges

Time of First Successful Submission: 2025-08-03 16:02:21

Getting Help

Time of First Successful Submission: 2025-08-03 16:08:41

Challenge Programs

Time of First Successful Submission: 2025-08-03 16:10:59

The Flag File

Time of First Successful Submission: 2025-08-03 16:20:16

Using Privileged Mode

Time of First Successful Submission: 2025-08-03 16:30:12

Persistent Home Directories - One

Time of First Successful Submission: 2025-08-03 16:44:54

Persistent Home Directories - Two

Time of First Successful Submission: 2025-08-03 16:45:59

Pwntools Tutorials

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Level 0.0

Time of First Successful Submission: 2026-04-03 10:26:46

Level 1.0

Time of First Successful Submission: 2026-04-03 10:45:23

Level 1.1

Time of First Successful Submission: 2026-04-03 16:46:06

Level 2.0

Time of First Successful Submission: 2026-04-03 16:11:26

Level 2.1

Time of First Successful Submission: 2026-04-03 17:28:05

Level 2.2

Time of First Successful Submission: 2026-04-04 08:08:58

Level 2.3

Time of First Successful Submission: 2026-04-04 08:19:38

Level 2.4

Time of First Successful Submission: 2026-04-04 08:29:34

Level 2.5

Time of First Successful Submission: 2026-04-04 08:56:22

Level 2.6

Time of First Successful Submission: 2026-04-04 09:19:10

Level 3.0

Time of First Successful Submission: 2026-04-04 19:33:04

Level 4.0

Time of First Successful Submission: 2026-04-05 12:00:23