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9 / 202 10662 / 22795


HTTP (curl)

Time of First Successful Submission: 2024-07-31 17:04:40

HTTP (python)

Time of First Successful Submission: 2024-07-31 17:56:24

Twisted Text (Easy)

Time of First Successful Submission: 2025-05-25 11:22:18

Twisted Text (Hard)

Time of First Successful Submission: 2025-06-28 18:59:26

Tidy Task (Easy)

Time of First Successful Submission: 2025-06-28 19:03:42

Tidy Task (Hard)

Time of First Successful Submission: 2025-06-28 19:06:19

Logical License (Easy)

Time of First Successful Submission: 2025-06-28 19:15:46

Logical License (Hard)

Time of First Successful Submission: 2025-06-28 19:30:59

Modest Mangler (Easy)

Time of First Successful Submission: 2025-06-28 20:11:22


Intro to Programming Languages

15 / 234 1730 / 32010


Commands

Time of First Successful Submission: 2024-07-30 16:22:04

Command Arguments

Time of First Successful Submission: 2024-07-30 16:23:04

Command History

Time of First Successful Submission: 2025-06-29 16:06:08

The Root Path

Time of First Successful Submission: 2024-07-30 16:26:43

Absolute Paths

Time of First Successful Submission: 2024-07-30 16:27:55

Changing position

Time of First Successful Submission: 2024-07-30 16:52:19

Changing to an Absolute Path

Time of First Successful Submission: 2024-07-30 16:54:03

Relative Paths

Time of First Successful Submission: 2024-07-30 17:03:40

Cat

Time of First Successful Submission: 2024-07-30 17:13:28

Ls

Time of First Successful Submission: 2024-07-30 17:20:43

Ls All

Time of First Successful Submission: 2024-07-30 17:52:57

Find

Time of First Successful Submission: 2024-07-30 18:59:51

Piping Echo

Time of First Successful Submission: 2024-07-31 07:51:36

Piping Stdout

Time of First Successful Submission: 2024-07-31 07:53:43

Piping Stdin

Time of First Successful Submission: 2024-07-31 08:43:17


Intro to Cybersecurity

11 / 183 13116 / 20046


File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-30 16:50:49

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-30 17:10:19

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-30 17:23:41

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-30 17:25:43

Reading Endianness (C)

Time of First Successful Submission: 2026-03-30 17:33:39

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-30 17:38:52

Version Information (Python)

Time of First Successful Submission: 2026-04-01 05:44:33

Version Information (C)

Time of First Successful Submission: 2026-04-01 17:10:07

Version Information (x86)

Time of First Successful Submission: 2026-04-01 17:13:52

Metadata and Data (Python)

Time of First Successful Submission: 2026-04-01 17:31:38

Metadata and Data (C)

Time of First Successful Submission: 2026-04-01 17:40:39


Program Security

11 / 162 5144 / 9579


Terrible Token (Easy)

Time of First Successful Submission: 2024-08-02 15:36:35

Terrible Token (Hard)

Time of First Successful Submission: 2024-08-02 15:38:57

Tangled Ticket (Easy)

Time of First Successful Submission: 2024-08-02 15:43:19

Tangled Ticket (Hard)

Time of First Successful Submission: 2025-05-25 11:13:31

Meager Mangler (Easy)

Time of First Successful Submission: 2025-06-28 19:33:35

Meager Mangler (Hard)

Time of First Successful Submission: 2025-06-28 19:43:22

Monstrous Mangler (Easy)

Time of First Successful Submission: 2026-03-24 17:46:49

Patched Up (Easy)

Time of First Successful Submission: 2025-06-29 13:48:28

Patched Up (Hard)

Time of First Successful Submission: 2025-06-29 15:08:58

Puzzle Patch (Easy)

Time of First Successful Submission: 2025-06-29 15:23:31

Puzzle Patch (Hard)

Time of First Successful Submission: 2025-06-29 15:30:02


Start Here

11 / 12 8652 / 43382


Using the Terminal

Time of First Successful Submission: 2026-03-21 18:00:02

Using the VSCode Workspace

Time of First Successful Submission: 2024-07-30 15:32:42

Using the GUI Desktop

Time of First Successful Submission: 2024-07-30 15:35:36

Pasting into the Desktop

Time of First Successful Submission: 2024-07-30 15:37:31

Restarting Challenges

Time of First Successful Submission: 2024-07-30 15:40:17

Challenge Programs

Time of First Successful Submission: 2024-07-30 15:43:29

The Flag File

Time of First Successful Submission: 2024-07-30 15:53:23

Using Privileged Mode

Time of First Successful Submission: 2024-07-30 15:57:02

Persistent Home Directories - One

Time of First Successful Submission: 2024-07-30 15:59:47

Persistent Home Directories - Two

Time of First Successful Submission: 2024-07-30 16:00:45


Linux Luminarium

82 / 128 10991 / 32419


Intro to Commands

Time of First Successful Submission: 2024-07-30 16:22:04

Intro to Arguments

Time of First Successful Submission: 2024-07-30 16:23:04

Command History

Time of First Successful Submission: 2025-06-29 16:06:08

The Root

Time of First Successful Submission: 2024-07-30 16:26:43

Program and absolute paths

Time of First Successful Submission: 2024-07-30 16:27:55

Position thy self

Time of First Successful Submission: 2024-07-30 16:52:19

Position elsewhere

Time of First Successful Submission: 2024-07-30 16:54:03

implicit relative paths, from /

Time of First Successful Submission: 2024-07-30 17:03:40

explicit relative paths, from /

Time of First Successful Submission: 2024-07-30 17:05:48

implicit relative path

Time of First Successful Submission: 2024-07-30 17:07:54

home sweet home

Time of First Successful Submission: 2024-07-30 17:11:15

cat: not the pet, but the command!

Time of First Successful Submission: 2024-07-30 17:13:28

catting absolute paths

Time of First Successful Submission: 2024-07-30 17:15:25

more catting practice

Time of First Successful Submission: 2024-07-30 17:17:03

grepping for a needle in a haystack

Time of First Successful Submission: 2024-07-30 17:19:39

listing files

Time of First Successful Submission: 2024-07-30 17:20:43

touching files

Time of First Successful Submission: 2024-07-30 17:21:57

removing files

Time of First Successful Submission: 2024-07-30 17:23:40

hidden files

Time of First Successful Submission: 2024-07-30 17:52:57

An Epic Filesystem Quest

Time of First Successful Submission: 2024-07-30 18:55:36

making directories

Time of First Successful Submission: 2024-07-30 18:57:10

finding files

Time of First Successful Submission: 2024-07-30 18:59:51

linking files

Time of First Successful Submission: 2024-07-30 19:13:18

Learning From Documentation

Time of First Successful Submission: 2024-07-30 19:17:40

Learning Complex Usage

Time of First Successful Submission: 2024-07-30 19:23:36

Reading Manuals

Time of First Successful Submission: 2024-07-30 19:31:08

Searching Manuals

Time of First Successful Submission: 2024-07-30 19:33:57

Searching For Manuals

Time of First Successful Submission: 2024-07-30 19:40:00

Helpful Programs

Time of First Successful Submission: 2024-07-30 19:44:26

Help for Builtins

Time of First Successful Submission: 2024-07-30 19:48:16

Matching with *

Time of First Successful Submission: 2024-07-30 19:50:56

Matching with ?

Time of First Successful Submission: 2024-07-30 19:52:41

Matching with []

Time of First Successful Submission: 2024-07-30 19:57:09

Matching paths with []

Time of First Successful Submission: 2024-07-30 19:59:54

Mixing globs

Time of First Successful Submission: 2024-07-31 07:49:10

Exclusionary globbing

Time of First Successful Submission: 2024-07-31 07:30:37

Redirecting output

Time of First Successful Submission: 2024-07-31 07:51:36

Redirecting more output

Time of First Successful Submission: 2024-07-31 07:53:43

Appending output

Time of First Successful Submission: 2024-07-31 07:57:55

Redirecting errors

Time of First Successful Submission: 2024-07-31 08:16:23

Redirecting input

Time of First Successful Submission: 2024-07-31 08:43:17

Grepping stored results

Time of First Successful Submission: 2024-07-31 08:45:28

Grepping live output

Time of First Successful Submission: 2024-07-31 08:46:35

Grepping errors

Time of First Successful Submission: 2024-07-31 08:52:37

Duplicating piped data with tee

Time of First Successful Submission: 2024-07-31 08:59:27

Writing to multiple programs

Time of First Successful Submission: 2024-07-31 09:06:17

Printing Variables

Time of First Successful Submission: 2024-07-31 09:08:36

Setting Variables

Time of First Successful Submission: 2024-07-31 09:09:45

Multi-word Variables

Time of First Successful Submission: 2024-07-31 09:10:46

Exporting Variables

Time of First Successful Submission: 2024-07-31 09:13:46

Printing Exported Variables

Time of First Successful Submission: 2024-07-31 09:15:51

Storing Command Output

Time of First Successful Submission: 2024-07-31 09:18:02

Reading Input

Time of First Successful Submission: 2024-07-31 09:39:19

Reading Files

Time of First Successful Submission: 2024-07-31 09:40:36

Listing Processes

Time of First Successful Submission: 2024-07-31 09:47:18

Killing Processes

Time of First Successful Submission: 2024-07-31 09:50:05

Interrupting Processes

Time of First Successful Submission: 2024-07-31 09:53:11

Suspending Processes

Time of First Successful Submission: 2024-07-31 09:54:21

Resuming Processes

Time of First Successful Submission: 2024-07-31 09:55:55

Backgrounding Processes

Time of First Successful Submission: 2024-07-31 10:04:07

Foregrounding Processes

Time of First Successful Submission: 2024-07-31 10:06:20

Starting Backgrounded Processes

Time of First Successful Submission: 2024-07-31 10:07:36

Becoming root with su

Time of First Successful Submission: 2024-07-31 12:10:21

Other users with su

Time of First Successful Submission: 2024-07-31 12:12:15

Cracking passwords

Time of First Successful Submission: 2024-07-31 12:19:30

Using sudo

Time of First Successful Submission: 2024-07-31 12:21:41

Changing File Ownership

Time of First Successful Submission: 2024-07-31 10:15:23

Groups and Files

Time of First Successful Submission: 2024-07-31 10:24:48

Fun With Groups Names

Time of First Successful Submission: 2024-07-31 10:26:17

Changing Permissions

Time of First Successful Submission: 2024-07-31 10:57:57

Executable Files

Time of First Successful Submission: 2024-07-31 10:59:22

Permission Tweaking Practice

Time of First Successful Submission: 2024-07-31 11:07:24

Permissions Setting Practice

Time of First Successful Submission: 2024-07-31 12:00:35

The SUID Bit

Time of First Successful Submission: 2024-07-31 12:07:48

Chaining with Semicolons

Time of First Successful Submission: 2024-07-31 12:22:53

Your First Shell Script

Time of First Successful Submission: 2024-07-31 12:25:09

Redirecting Script Output

Time of First Successful Submission: 2024-07-31 12:26:42

Executable Shell Scripts

Time of First Successful Submission: 2024-07-31 12:29:57

The PATH Variable

Time of First Successful Submission: 2024-07-31 12:37:09

Setting PATH

Time of First Successful Submission: 2024-07-31 12:38:58

Adding Commands

Time of First Successful Submission: 2024-07-31 12:48:08

Hijacking Commands

Time of First Successful Submission: 2024-07-31 12:53:47


Computing 101

53 / 94 5076 / 21537


Your First Register

Time of First Successful Submission: 2026-03-29 08:55:12

Your First Syscall

Time of First Successful Submission: 2026-03-29 08:56:16

Exit Codes

Time of First Successful Submission: 2026-03-29 08:57:34

Building Executables

Time of First Successful Submission: 2026-03-29 09:01:58

Moving Between Registers

Time of First Successful Submission: 2026-03-29 09:03:59

Loading From Memory

Time of First Successful Submission: 2026-03-29 09:11:26

More Loading Practice

Time of First Successful Submission: 2026-03-29 09:13:02

Dereferencing Pointers

Time of First Successful Submission: 2026-03-29 09:15:16

Dereferencing Yourself

Time of First Successful Submission: 2026-03-29 09:16:47

Dereferencing with Offsets

Time of First Successful Submission: 2026-03-29 09:18:31

Stored Addresses

Time of First Successful Submission: 2026-03-29 09:20:26

Double Dereference

Time of First Successful Submission: 2026-03-29 09:24:24

The Stack

Time of First Successful Submission: 2026-03-29 09:27:29

Stack Offsets

Time of First Successful Submission: 2026-03-29 09:28:56

Program Arguments on the Stack

Time of First Successful Submission: 2026-03-29 09:32:58

Popping From the Stack

Time of First Successful Submission: 2026-03-29 09:36:56

Disassembling Programs

Time of First Successful Submission: 2026-03-29 09:38:37

Tracing Syscalls

Time of First Successful Submission: 2026-03-29 09:39:55

Starting GDB

Time of First Successful Submission: 2026-03-29 09:40:49

Quitting GDB

Time of First Successful Submission: 2026-03-29 09:41:38

Starting Programs in GDB

Time of First Successful Submission: 2026-03-29 09:43:10

Disassembling in GDB

Time of First Successful Submission: 2026-03-29 09:44:14

Stepping Through Instructions

Time of First Successful Submission: 2026-03-29 09:45:47

Reading Register Values

Time of First Successful Submission: 2026-03-29 09:46:49

Popping Stack Values

Time of First Successful Submission: 2026-03-29 09:48:23

Examining Memory

Time of First Successful Submission: 2026-03-29 09:50:19

Examining Stack Pointers

Time of First Successful Submission: 2026-03-29 09:52:34

Cooperative Debugging

Time of First Successful Submission: 2026-03-29 09:58:58

Writing Output

Time of First Successful Submission: 2026-03-29 10:07:12

Chaining Syscalls

Time of First Successful Submission: 2026-03-29 10:09:05

Writing Strings

Time of First Successful Submission: 2026-03-29 10:10:48

Reading Data

Time of First Successful Submission: 2026-03-29 10:24:45

Opening Files

Time of First Successful Submission: 2026-03-29 10:27:32

Hardcoding the Filename

Time of First Successful Submission: 2026-03-29 10:40:04

Comparing Values

Time of First Successful Submission: 2026-03-29 11:25:47

Comparing Characters

Time of First Successful Submission: 2026-03-29 11:27:42

Conditional Control Flow

Time of First Successful Submission: 2026-03-29 11:30:13

Comparing Strings

Time of First Successful Submission: 2026-03-29 11:32:34

Reverse the Password

Time of First Successful Submission: 2026-03-29 12:06:38

Conditionals Without Conditionals

Time of First Successful Submission: 2026-03-29 12:39:20

Looping

Time of First Successful Submission: 2026-03-29 12:43:43

Reverse the Calculation

Time of First Successful Submission: 2026-03-29 11:15:13

Reverse the Reverse

Time of First Successful Submission: 2026-03-29 11:16:30

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-03-29 11:17:43

Loops on Data

Time of First Successful Submission: 2026-03-29 11:20:06

Exit

Time of First Successful Submission: 2026-03-29 12:48:40

Socket

Time of First Successful Submission: 2026-03-29 13:48:46

Bind

Time of First Successful Submission: 2026-03-29 14:44:51

Listen

Time of First Successful Submission: 2026-03-29 14:55:14

Accept

Time of First Successful Submission: 2026-03-29 14:58:02

Debugging Programs

Time of First Successful Submission: 2026-03-29 10:45:52

Inspecting Registers

Time of First Successful Submission: 2026-03-29 10:47:08

Examining Memory

Time of First Successful Submission: 2026-03-29 11:08:47


Playing With Programs

19 / 116 15141 / 23388


HTTP (netcat)

Time of First Successful Submission: 2024-07-31 17:17:24

cat

Time of First Successful Submission: 2024-07-31 12:57:08

more

Time of First Successful Submission: 2024-07-31 12:58:30

less

Time of First Successful Submission: 2024-07-31 12:59:12

tail

Time of First Successful Submission: 2024-07-31 13:00:01

head

Time of First Successful Submission: 2024-07-31 13:00:55

sort

Time of First Successful Submission: 2024-07-31 13:02:02

vim

Time of First Successful Submission: 2024-07-31 13:03:31

emacs

Time of First Successful Submission: 2024-07-31 13:19:58

nano

Time of First Successful Submission: 2024-07-31 13:20:48

rev

Time of First Successful Submission: 2024-07-31 13:21:51

od

Time of First Successful Submission: 2024-07-31 16:16:08

hd

Time of First Successful Submission: 2024-07-31 16:19:17

xxd

Time of First Successful Submission: 2024-07-31 16:25:50

base32

Time of First Successful Submission: 2024-07-31 16:27:10

base64

Time of First Successful Submission: 2024-07-31 16:29:55

split

Time of First Successful Submission: 2024-07-31 16:35:07

gzip

Time of First Successful Submission: 2024-07-31 16:38:20

bzip2

Time of First Successful Submission: 2024-07-31 16:49:10


GCA CTF

11 / 104 8786 / 43659


Using the Terminal

Time of First Successful Submission: 2026-03-21 18:00:02

Using the VSCode Workspace

Time of First Successful Submission: 2024-07-30 15:32:42

Using the GUI Desktop

Time of First Successful Submission: 2024-07-30 15:35:36

Pasting into the Desktop

Time of First Successful Submission: 2024-07-30 15:37:31

Restarting Challenges

Time of First Successful Submission: 2024-07-30 15:40:17

Getting Help

Time of First Successful Submission: 2024-07-30 16:19:17

Challenge Programs

Time of First Successful Submission: 2024-07-30 15:43:29

The Flag File

Time of First Successful Submission: 2024-07-30 15:53:23

Using Privileged Mode

Time of First Successful Submission: 2024-07-30 15:57:02

Persistent Home Directories - One

Time of First Successful Submission: 2024-07-30 15:59:47

Persistent Home Directories - Two

Time of First Successful Submission: 2024-07-30 16:00:45


Pwntools Tutorials

12 / 12 350 / 1221


Level 0.0

Time of First Successful Submission: 2026-03-22 17:30:59

Level 1.0

Time of First Successful Submission: 2026-03-23 16:54:13

Level 1.1

Time of First Successful Submission: 2026-03-23 17:03:15

Level 2.0

Time of First Successful Submission: 2026-03-23 17:09:31

Level 2.1

Time of First Successful Submission: 2026-03-23 17:23:40

Level 2.2

Time of First Successful Submission: 2026-03-23 17:41:06

Level 2.3

Time of First Successful Submission: 2026-03-23 17:52:55

Level 2.4

Time of First Successful Submission: 2026-03-23 17:59:59

Level 2.5

Time of First Successful Submission: 2026-03-24 16:08:36

Level 2.6

Time of First Successful Submission: 2026-03-24 16:25:43

Level 3.0

Time of First Successful Submission: 2026-03-24 16:55:22

Level 4.0

Time of First Successful Submission: 2026-03-24 17:29:26