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12 / 202 10005 / 22789


Twisted Text (Easy)

Time of First Successful Submission: 2025-03-22 16:34:34

Twisted Text (Hard)

Time of First Successful Submission: 2025-03-22 16:35:57

Tidy Task (Easy)

Time of First Successful Submission: 2025-03-22 16:38:43

Tidy Task (Hard)

Time of First Successful Submission: 2025-03-22 16:39:13

Logical License (Easy)

Time of First Successful Submission: 2025-03-22 16:43:13

Logical License (Hard)

Time of First Successful Submission: 2025-03-22 16:47:08

Modest Mangler (Easy)

Time of First Successful Submission: 2025-03-22 17:10:48

Modest Mangler (Hard)

Time of First Successful Submission: 2025-03-22 17:22:53

This is Yancode (Easy)

Time of First Successful Submission: 2025-03-22 18:47:01

This is Yancode (Hard)

Time of First Successful Submission: 2025-03-22 18:55:42

Powered by Yancode (Easy)

Time of First Successful Submission: 2025-03-22 20:41:03

Powered by Yancode (Hard)

Time of First Successful Submission: 2025-03-22 20:50:56


ARM Architecture

1 / 28 667 / 692


Level1

Time of First Successful Submission: 2025-03-19 21:42:20


Intro to Programming Languages

15 / 234 6424 / 31882


Commands

Time of First Successful Submission: 2025-11-29 11:22:06

Command Arguments

Time of First Successful Submission: 2025-11-29 11:22:34

Command History

Time of First Successful Submission: 2025-11-29 11:22:57

The Root Path

Time of First Successful Submission: 2025-11-29 11:23:32

Absolute Paths

Time of First Successful Submission: 2025-11-29 11:23:57

Changing position

Time of First Successful Submission: 2025-11-29 11:24:17

Changing to an Absolute Path

Time of First Successful Submission: 2025-11-29 11:25:04

Relative Paths

Time of First Successful Submission: 2025-11-29 11:26:00

Cat

Time of First Successful Submission: 2025-11-29 11:33:17

Ls

Time of First Successful Submission: 2025-11-29 11:35:27

Ls All

Time of First Successful Submission: 2025-11-29 11:37:39

Find

Time of First Successful Submission: 2025-11-29 11:44:16

Piping Echo

Time of First Successful Submission: 2025-11-29 11:52:59

Piping Stdout

Time of First Successful Submission: 2025-11-29 11:53:45

Piping Stdin

Time of First Successful Submission: 2025-11-29 11:56:12


XNU Dojo

1 / 61 681 / 711


Level1

Time of First Successful Submission: 2025-03-19 21:42:20


Intro to Cybersecurity

24 / 183 9575 / 20002


Path Traversal 1

Time of First Successful Submission: 2025-12-27 16:11:03

XOR

Time of First Successful Submission: 2025-03-22 16:04:55

XORing Hex

Time of First Successful Submission: 2025-03-22 16:09:32

Your First Overflow (easy)

Time of First Successful Submission: 2025-03-21 22:08:47

Your First Overflow (hard)

Time of First Successful Submission: 2025-03-21 22:17:55

Precision (easy)

Time of First Successful Submission: 2025-03-21 22:21:20

Precision (hard)

Time of First Successful Submission: 2025-03-21 22:27:54

Variable Control (easy)

Time of First Successful Submission: 2025-03-22 09:50:37

Variable Control (hard)

Time of First Successful Submission: 2025-03-22 10:00:40

Control Hijack (easy)

Time of First Successful Submission: 2025-03-22 10:33:12

Control Hijack (hard)

Time of First Successful Submission: 2025-03-22 10:40:02

Tricky Control Hijack (easy)

Time of First Successful Submission: 2025-03-22 10:51:45

Tricky Control Hijack (hard)

Time of First Successful Submission: 2025-03-22 11:01:08

PIEs (easy)

Time of First Successful Submission: 2025-03-22 11:16:29

PIEs (hard)

Time of First Successful Submission: 2025-03-22 11:21:38

String Lengths (easy)

Time of First Successful Submission: 2025-03-22 11:32:29

String Lengths (hard)

Time of First Successful Submission: 2025-03-22 11:40:53

Basic Shellcode

Time of First Successful Submission: 2025-03-22 12:57:05

NOP Sleds

Time of First Successful Submission: 2025-03-22 13:09:54

NULL-Free Shellcode

Time of First Successful Submission: 2025-03-22 13:25:03

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2025-03-22 13:44:14

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2025-03-22 13:47:53

Hijack to Shellcode (easy)

Time of First Successful Submission: 2025-03-22 14:04:28

Hijack to Shellcode (hard)

Time of First Successful Submission: 2025-03-22 14:36:07


Program Security

30 / 162 2302 / 9549


Terrible Token (Easy)

Time of First Successful Submission: 2025-03-22 16:19:04

Terrible Token (Hard)

Time of First Successful Submission: 2025-03-22 16:21:10

Tangled Ticket (Easy)

Time of First Successful Submission: 2025-03-22 16:29:17

Tangled Ticket (Hard)

Time of First Successful Submission: 2025-03-22 16:32:17

Meager Mangler (Easy)

Time of First Successful Submission: 2025-03-22 16:57:08

Meager Mangler (Hard)

Time of First Successful Submission: 2025-03-22 17:05:29

Monstrous Mangler (Easy)

Time of First Successful Submission: 2025-03-22 17:26:11

Monstrous Mangler (Hard)

Time of First Successful Submission: 2025-03-22 17:33:59

Patched Up (Easy)

Time of First Successful Submission: 2025-03-22 17:57:04

Patched Up (Hard)

Time of First Successful Submission: 2025-03-22 18:01:16

Puzzle Patch (Easy)

Time of First Successful Submission: 2025-03-22 18:10:05

Puzzle Patch (Hard)

Time of First Successful Submission: 2025-03-22 18:12:58

Patch Perfect (Easy)

Time of First Successful Submission: 2025-03-22 18:28:36

Patch Perfect (Hard)

Time of First Successful Submission: 2025-03-22 18:32:31

Loose Link (Easy)

Time of First Successful Submission: 2025-03-28 17:56:06

Loose Link (Hard)

Time of First Successful Submission: 2025-03-28 17:59:55

Call Chain (Easy)

Time of First Successful Submission: 2025-03-28 18:06:58

Call Chain (Hard)

Time of First Successful Submission: 2025-03-28 18:16:07

Chain of Command (Easy)

Time of First Successful Submission: 2025-03-28 19:23:00

Chain of Command (Hard)

Time of First Successful Submission: 2025-03-28 19:32:03

Stop, Pop, and ROP (Easy)

Time of First Successful Submission: 2025-03-29 10:16:46

Stop, Pop, and ROP (Hard)

Time of First Successful Submission: 2025-03-29 11:18:31

Stop, Pop and ROP II (Easy)

Time of First Successful Submission: 2025-03-29 13:08:00

Stop, Pop, and ROP II (Hard)

Time of First Successful Submission: 2025-03-29 13:21:01

Indirect Invocation (Easy)

Time of First Successful Submission: 2025-03-29 13:50:14

Indirect Invocation (Hard)

Time of First Successful Submission: 2025-03-29 13:55:46

Leaky Libc (Easy)

Time of First Successful Submission: 2025-03-29 14:45:54

Leaky Libc (Hard)

Time of First Successful Submission: 2025-03-29 14:52:13

Putsception (Easy)

Time of First Successful Submission: 2025-03-29 17:29:08

Putsception (Hard)

Time of First Successful Submission: 2025-03-29 17:37:56


Software Exploitation

25 / 90 428 / 2127


Level1.0

Time of First Successful Submission: 2025-03-19 21:53:07

Level1.1

Time of First Successful Submission: 2025-03-19 22:02:41

Level2.0

Time of First Successful Submission: 2025-03-20 18:51:16

Level2.1

Time of First Successful Submission: 2025-03-20 19:10:15

Level3.0

Time of First Successful Submission: 2025-03-21 14:11:56

Level3.1

Time of First Successful Submission: 2025-03-21 14:55:51

Level4.0

Time of First Successful Submission: 2025-03-21 17:35:12

Level4.1

Time of First Successful Submission: 2025-03-21 17:52:48

Level5.0

Time of First Successful Submission: 2025-03-21 18:24:05

Level5.1

Time of First Successful Submission: 2025-03-21 18:46:49

Level6.0

Time of First Successful Submission: 2025-03-21 21:17:35

Level6.1

Time of First Successful Submission: 2025-03-21 21:52:39

Level7.0

Time of First Successful Submission: 2025-03-23 20:12:06

Level7.1

Time of First Successful Submission: 2025-03-23 20:28:44

Level8.0

Time of First Successful Submission: 2025-03-24 20:32:58

Level8.1

Time of First Successful Submission: 2025-03-24 21:21:48

Level9.0

Time of First Successful Submission: 2025-03-25 22:01:47

Level9.1

Time of First Successful Submission: 2025-03-25 22:17:58

Level10.0

Time of First Successful Submission: 2025-04-02 19:02:36

Level10.1

Time of First Successful Submission: 2025-04-05 19:10:22

Level11.0

Time of First Successful Submission: 2025-04-10 17:46:30

Level11.1

Time of First Successful Submission: 2025-04-10 19:16:34

Level12.0

Time of First Successful Submission: 2025-04-11 15:32:25

Level12.1

Time of First Successful Submission: 2025-04-11 15:47:29

level1

Time of First Successful Submission: 2025-04-11 17:44:46


Start Here

5 / 12 31649 / 43185


Using the VSCode Workspace

Time of First Successful Submission: 2025-03-19 21:32:00

Using the GUI Desktop

Time of First Successful Submission: 2025-03-19 21:33:54

Pasting into the Desktop

Time of First Successful Submission: 2025-03-19 21:35:25

Challenge Programs

Time of First Successful Submission: 2025-11-28 20:24:35

The Flag File

Time of First Successful Submission: 2025-11-28 20:26:25


Linux Luminarium

128 / 128 617 / 32292


Intro to Commands

Time of First Successful Submission: 2025-11-29 11:22:06

Intro to Arguments

Time of First Successful Submission: 2025-11-29 11:22:34

Command History

Time of First Successful Submission: 2025-11-29 11:22:57

The Root

Time of First Successful Submission: 2025-11-29 11:23:32

Program and absolute paths

Time of First Successful Submission: 2025-11-29 11:23:57

Position thy self

Time of First Successful Submission: 2025-11-29 11:24:17

Position elsewhere

Time of First Successful Submission: 2025-11-29 11:25:04

implicit relative paths, from /

Time of First Successful Submission: 2025-11-29 11:26:00

explicit relative paths, from /

Time of First Successful Submission: 2025-11-29 11:26:34

implicit relative path

Time of First Successful Submission: 2025-11-29 11:27:22

home sweet home

Time of First Successful Submission: 2025-11-29 11:32:21

cat: not the pet, but the command!

Time of First Successful Submission: 2025-11-29 11:33:17

catting absolute paths

Time of First Successful Submission: 2025-11-29 11:33:38

more catting practice

Time of First Successful Submission: 2025-11-29 11:34:09

grepping for a needle in a haystack

Time of First Successful Submission: 2025-11-29 11:34:31

comparing files

Time of First Successful Submission: 2025-11-29 11:34:59

listing files

Time of First Successful Submission: 2025-11-29 11:35:27

touching files

Time of First Successful Submission: 2025-11-29 11:35:56

removing files

Time of First Successful Submission: 2025-11-29 11:36:18

moving files

Time of First Successful Submission: 2025-11-29 11:36:56

copying files

Time of First Successful Submission: 2025-11-29 11:37:20

hidden files

Time of First Successful Submission: 2025-11-29 11:37:39

An Epic Filesystem Quest

Time of First Successful Submission: 2025-11-29 11:41:25

making directories

Time of First Successful Submission: 2025-11-29 11:43:04

finding files

Time of First Successful Submission: 2025-11-29 11:44:16

linking files

Time of First Successful Submission: 2025-11-29 11:45:54

Learning From Documentation

Time of First Successful Submission: 2025-11-29 11:47:04

Learning Complex Usage

Time of First Successful Submission: 2025-11-29 11:47:31

Reading Manuals

Time of First Successful Submission: 2025-11-29 11:48:21

Searching Manuals

Time of First Successful Submission: 2025-11-29 11:49:04

Searching For Manuals

Time of First Successful Submission: 2025-11-29 11:50:35

Helpful Programs

Time of First Successful Submission: 2025-11-29 11:51:18

Help for Builtins

Time of First Successful Submission: 2025-11-29 11:52:07

Matching with *

Time of First Successful Submission: 2025-11-28 20:37:04

Matching with ?

Time of First Successful Submission: 2025-11-28 21:28:12

Matching with []

Time of First Successful Submission: 2025-11-28 21:29:43

Matching paths with []

Time of First Successful Submission: 2025-11-28 21:31:09

Multiple globs

Time of First Successful Submission: 2025-11-28 21:32:16

Mixing globs

Time of First Successful Submission: 2025-11-28 21:33:13

Exclusionary globbing

Time of First Successful Submission: 2025-11-29 11:18:15

Tab completion

Time of First Successful Submission: 2025-11-29 11:19:41

Multiple options for tab completion

Time of First Successful Submission: 2025-11-29 11:20:29

Tab completion on commands

Time of First Successful Submission: 2025-11-29 11:20:57

Redirecting output

Time of First Successful Submission: 2025-11-29 11:52:59

Redirecting more output

Time of First Successful Submission: 2025-11-29 11:53:45

Appending output

Time of First Successful Submission: 2025-11-29 11:54:46

Redirecting errors

Time of First Successful Submission: 2025-11-29 11:55:43

Redirecting input

Time of First Successful Submission: 2025-11-29 11:56:12

Grepping stored results

Time of First Successful Submission: 2025-11-29 11:57:00

Grepping live output

Time of First Successful Submission: 2025-11-29 11:57:25

Grepping errors

Time of First Successful Submission: 2025-11-29 11:58:14

Filtering with grep -v

Time of First Successful Submission: 2025-11-29 11:59:10

Filtering with sed

Time of First Successful Submission: 2025-11-29 11:59:56

Duplicating piped data with tee

Time of First Successful Submission: 2025-11-29 12:02:44

Process substitution for input

Time of First Successful Submission: 2025-11-29 12:05:09

Writing to multiple programs

Time of First Successful Submission: 2025-11-29 12:10:08

Split-piping stderr and stdout

Time of First Successful Submission: 2025-11-29 12:12:40

Named pipes

Time of First Successful Submission: 2025-11-29 12:19:24

Printing Variables

Time of First Successful Submission: 2025-11-29 12:20:59

Setting Variables

Time of First Successful Submission: 2025-11-29 12:21:35

Multi-word Variables

Time of First Successful Submission: 2025-11-29 12:21:57

Exporting Variables

Time of First Successful Submission: 2025-11-29 12:23:02

Printing Exported Variables

Time of First Successful Submission: 2025-11-29 12:23:23

Storing Command Output

Time of First Successful Submission: 2025-11-29 12:23:55

Reading Input

Time of First Successful Submission: 2025-11-29 12:24:39

Reading Files

Time of First Successful Submission: 2025-11-29 12:25:48

Translating characters

Time of First Successful Submission: 2025-11-29 12:28:02

Deleting characters

Time of First Successful Submission: 2025-11-29 12:28:37

Deleting newlines

Time of First Successful Submission: 2025-11-29 12:29:48

Extracting the first lines with head

Time of First Successful Submission: 2025-11-29 12:30:26

Extracting specific sections of text

Time of First Successful Submission: 2025-11-29 12:33:29

Sorting data

Time of First Successful Submission: 2025-11-29 12:32:47

Listing Processes

Time of First Successful Submission: 2025-11-29 12:34:58

Killing Processes

Time of First Successful Submission: 2025-11-29 12:35:55

Interrupting Processes

Time of First Successful Submission: 2025-11-29 12:36:40

Killing Misbehaving Processes

Time of First Successful Submission: 2025-11-29 12:40:34

Suspending Processes

Time of First Successful Submission: 2025-11-29 12:41:20

Resuming Processes

Time of First Successful Submission: 2025-11-29 12:42:16

Backgrounding Processes

Time of First Successful Submission: 2025-11-29 12:43:49

Foregrounding Processes

Time of First Successful Submission: 2025-11-29 12:44:33

Starting Backgrounded Processes

Time of First Successful Submission: 2025-11-29 12:44:56

Process Exit Codes

Time of First Successful Submission: 2025-11-29 12:45:59

Becoming root with su

Time of First Successful Submission: 2025-11-29 12:48:47

Other users with su

Time of First Successful Submission: 2025-11-29 12:49:33

Cracking passwords

Time of First Successful Submission: 2025-11-29 12:52:12

Using sudo

Time of First Successful Submission: 2025-11-29 12:54:04

Changing File Ownership

Time of First Successful Submission: 2025-11-29 16:26:46

Groups and Files

Time of First Successful Submission: 2025-11-29 16:28:55

Fun With Groups Names

Time of First Successful Submission: 2025-11-29 16:29:46

Changing Permissions

Time of First Successful Submission: 2025-11-29 16:31:17

Executable Files

Time of First Successful Submission: 2025-11-29 16:32:28

Permission Tweaking Practice

Time of First Successful Submission: 2025-11-29 16:38:37

Permissions Setting Practice

Time of First Successful Submission: 2025-11-29 18:28:59

The SUID Bit

Time of First Successful Submission: 2025-11-29 18:29:58

Chaining with Semicolons

Time of First Successful Submission: 2025-11-29 18:30:53

Building on Success

Time of First Successful Submission: 2025-11-29 18:31:20

Handling Failure

Time of First Successful Submission: 2025-11-29 18:31:48

Your First Shell Script

Time of First Successful Submission: 2025-11-29 18:33:29

Redirecting Script Output

Time of First Successful Submission: 2025-11-29 18:35:04

Executable Shell Scripts

Time of First Successful Submission: 2025-11-29 18:35:55

Understanding Shebangs

Time of First Successful Submission: 2025-11-29 18:39:18

Scripting with Arguments

Time of First Successful Submission: 2025-11-29 18:40:00

Scripting with Conditionals

Time of First Successful Submission: 2025-11-29 18:41:08

Scripting with Default Cases

Time of First Successful Submission: 2025-11-29 18:42:45

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-11-29 18:51:49

Reading Shell Scripts

Time of First Successful Submission: 2025-11-29 18:52:23

Launching Screen

Time of First Successful Submission: 2025-11-29 18:53:44

Detaching and Attaching

Time of First Successful Submission: 2025-11-29 18:55:09

Finding Sessions

Time of First Successful Submission: 2025-11-29 19:28:51

Switching Windows

Time of First Successful Submission: 2025-11-29 19:34:29

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-11-29 19:35:28

Switching Windows (tmux)

Time of First Successful Submission: 2025-11-29 19:36:50

The PATH Variable

Time of First Successful Submission: 2025-11-29 19:37:38

Setting PATH

Time of First Successful Submission: 2025-11-29 19:38:16

Finding Commands

Time of First Successful Submission: 2025-11-29 19:38:50

Adding Commands

Time of First Successful Submission: 2025-11-29 19:42:08

Hijacking Commands

Time of First Successful Submission: 2025-11-29 19:43:24

Bashrc Backdoor

Time of First Successful Submission: 2025-11-29 19:44:32

Sniffing Input

Time of First Successful Submission: 2025-11-29 19:48:40

Overshared Directories

Time of First Successful Submission: 2025-11-29 19:53:04

Tricky Linking

Time of First Successful Submission: 2025-11-29 20:02:44

Sniffing Process Arguments

Time of First Successful Submission: 2025-11-29 20:04:37

Snooping on Configurations

Time of First Successful Submission: 2025-11-29 20:07:29

The Fork Bomb

Time of First Successful Submission: 2025-11-29 20:18:15

Disk-Space Doomsday

Time of First Successful Submission: 2025-11-29 20:20:09

rm -rf /

Time of First Successful Submission: 2025-11-29 20:23:14

Life after rm -rf /

Time of First Successful Submission: 2025-11-29 20:25:49

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-11-29 20:28:54


GCA CTF

5 / 104 31854 / 43462


Using the VSCode Workspace

Time of First Successful Submission: 2025-03-19 21:32:00

Using the GUI Desktop

Time of First Successful Submission: 2025-03-19 21:33:54

Pasting into the Desktop

Time of First Successful Submission: 2025-03-19 21:35:25

Challenge Programs

Time of First Successful Submission: 2025-11-28 20:24:35

The Flag File

Time of First Successful Submission: 2025-11-28 20:26:25