Sasha Baron Cohen

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ARM Architecture

16 / 28 238 / 832


Level1

Time of First Successful Submission: 2026-09-07 01:17:57

Level2

Time of First Successful Submission: 2026-09-07 01:27:34

Level3

Time of First Successful Submission: 2026-09-07 01:44:38

Level4

Time of First Successful Submission: 2026-09-07 01:51:21

Level5

Time of First Successful Submission: 2026-09-07 01:58:04

Level6

Time of First Successful Submission: 2026-09-07 02:21:32

Level7

Time of First Successful Submission: 2026-09-07 02:37:07

Level8

Time of First Successful Submission: 2026-09-08 04:17:46

Level9

Time of First Successful Submission: 2026-09-08 04:37:56

Level10

Time of First Successful Submission: 2026-09-08 04:50:32

Level11

Time of First Successful Submission: 2026-09-08 05:19:09

Level12

Time of First Successful Submission: 2026-09-08 05:30:16

Level13

Time of First Successful Submission: 2026-09-08 05:48:33

Level14

Time of First Successful Submission: 2026-09-08 06:10:33

Level15

Time of First Successful Submission: 2026-09-08 07:20:50

level-1-0

Time of First Successful Submission: 2026-09-09 05:21:11


Intro to Programming Languages

15 / 253 15178 / 48350


Commands

Time of First Successful Submission: 2026-09-09 06:13:01

Command Arguments

Time of First Successful Submission: 2026-09-09 06:14:12

Command History

Time of First Successful Submission: 2026-09-09 06:14:54

The Root Path

Time of First Successful Submission: 2026-09-09 06:32:36

Absolute Paths

Time of First Successful Submission: 2026-09-09 06:37:19

Changing position

Time of First Successful Submission: 2026-09-09 06:39:29

Changing to an Absolute Path

Time of First Successful Submission: 2026-09-10 06:17:36

Relative Paths

Time of First Successful Submission: 2026-09-10 06:20:44

Cat

Time of First Successful Submission: 2026-09-11 05:38:40

Ls

Time of First Successful Submission: 2026-09-11 05:51:44

Ls All

Time of First Successful Submission: 2026-09-11 06:02:05

Find

Time of First Successful Submission: 2026-09-11 06:29:53

Piping Echo

Time of First Successful Submission: 2026-09-12 08:31:38

Piping Stdout

Time of First Successful Submission: 2026-09-12 08:34:57

Piping Stdin

Time of First Successful Submission: 2026-09-12 08:52:54


XNU Dojo

16 / 61 257 / 854


Level1

Time of First Successful Submission: 2026-09-07 01:17:57

Level2

Time of First Successful Submission: 2026-09-07 01:27:34

Level3

Time of First Successful Submission: 2026-09-07 01:44:38

Level4

Time of First Successful Submission: 2026-09-07 01:51:21

Level5

Time of First Successful Submission: 2026-09-07 01:58:04

Level6

Time of First Successful Submission: 2026-09-07 02:21:32

Level7

Time of First Successful Submission: 2026-09-07 02:37:07

Level8

Time of First Successful Submission: 2026-09-08 04:17:46

Level9

Time of First Successful Submission: 2026-09-08 04:37:56

Level10

Time of First Successful Submission: 2026-09-08 04:50:32

Level11

Time of First Successful Submission: 2026-09-08 05:19:09

Level12

Time of First Successful Submission: 2026-09-08 05:30:16

Level13

Time of First Successful Submission: 2026-09-08 05:48:33

Level14

Time of First Successful Submission: 2026-09-08 06:10:33

Level15

Time of First Successful Submission: 2026-09-08 07:20:50

level-1-0

Time of First Successful Submission: 2026-09-09 05:21:11


Start Here

10 / 10 18216 / 66948


Using the Terminal

Time of First Successful Submission: 2026-09-09 05:24:03

Using the VSCode Workspace

Time of First Successful Submission: 2026-09-09 05:34:52

Using the GUI Desktop

Time of First Successful Submission: 2026-09-09 05:38:08

Pasting into the Desktop

Time of First Successful Submission: 2026-09-09 05:43:16

Restarting Challenges

Time of First Successful Submission: 2026-09-09 05:46:02

Challenge Programs

Time of First Successful Submission: 2026-09-15 10:38:48

The Flag File

Time of First Successful Submission: 2026-09-15 10:41:29

Using Privileged Mode

Time of First Successful Submission: 2026-09-15 10:48:55

Persistent Home Directories - One

Time of First Successful Submission: 2026-09-15 10:50:24

Persistent Home Directories - Two

Time of First Successful Submission: 2026-09-15 10:50:55


Linux Luminarium

128 / 128 5500 / 49018


Intro to Commands

Time of First Successful Submission: 2026-09-09 06:13:01

Intro to Arguments

Time of First Successful Submission: 2026-09-09 06:14:12

Command History

Time of First Successful Submission: 2026-09-09 06:14:54

The Root

Time of First Successful Submission: 2026-09-09 06:32:36

Program and absolute paths

Time of First Successful Submission: 2026-09-09 06:37:19

Position thy self

Time of First Successful Submission: 2026-09-09 06:39:29

Position elsewhere

Time of First Successful Submission: 2026-09-10 06:17:36

implicit relative paths, from /

Time of First Successful Submission: 2026-09-10 06:20:44

explicit relative paths, from /

Time of First Successful Submission: 2026-09-10 06:25:25

implicit relative path

Time of First Successful Submission: 2026-09-10 06:27:37

home sweet home

Time of First Successful Submission: 2026-09-10 06:32:47

cat: not the pet, but the command!

Time of First Successful Submission: 2026-09-11 05:38:40

catting absolute paths

Time of First Successful Submission: 2026-09-11 05:39:17

more catting practice

Time of First Successful Submission: 2026-09-11 05:41:47

grepping for a needle in a haystack

Time of First Successful Submission: 2026-09-11 05:43:21

comparing files

Time of First Successful Submission: 2026-09-11 05:45:23

listing files

Time of First Successful Submission: 2026-09-11 05:51:44

touching files

Time of First Successful Submission: 2026-09-11 05:52:31

removing files

Time of First Successful Submission: 2026-09-11 05:57:50

moving files

Time of First Successful Submission: 2026-09-11 05:59:16

copying files

Time of First Successful Submission: 2026-09-11 06:01:18

hidden files

Time of First Successful Submission: 2026-09-11 06:02:05

An Epic Filesystem Quest

Time of First Successful Submission: 2026-09-11 06:21:02

making directories

Time of First Successful Submission: 2026-09-11 06:23:31

finding files

Time of First Successful Submission: 2026-09-11 06:29:53

linking files

Time of First Successful Submission: 2026-09-11 06:41:24

Learning From Documentation

Time of First Successful Submission: 2026-09-11 14:34:38

Learning Complex Usage

Time of First Successful Submission: 2026-09-11 14:37:56

Reading Manuals

Time of First Successful Submission: 2026-09-11 14:48:16

Searching Manuals

Time of First Successful Submission: 2026-09-11 14:54:21

Searching For Manuals

Time of First Successful Submission: 2026-09-11 15:05:47

Helpful Programs

Time of First Successful Submission: 2026-09-11 15:14:25

Help for Builtins

Time of First Successful Submission: 2026-09-11 15:16:59

Matching with *

Time of First Successful Submission: 2026-09-12 06:19:14

Matching with ?

Time of First Successful Submission: 2026-09-12 06:20:40

Matching with []

Time of First Successful Submission: 2026-09-12 06:22:55

Matching paths with []

Time of First Successful Submission: 2026-09-12 06:26:29

Multiple globs

Time of First Successful Submission: 2026-09-12 06:28:33

Mixing globs

Time of First Successful Submission: 2026-09-12 06:33:30

Exclusionary globbing

Time of First Successful Submission: 2026-09-12 06:36:00

Tab completion

Time of First Successful Submission: 2026-09-12 06:38:09

Multiple options for tab completion

Time of First Successful Submission: 2026-09-12 06:44:01

Tab completion on commands

Time of First Successful Submission: 2026-09-12 06:44:38

Redirecting output

Time of First Successful Submission: 2026-09-12 08:31:38

Redirecting more output

Time of First Successful Submission: 2026-09-12 08:34:57

Appending output

Time of First Successful Submission: 2026-09-12 08:36:39

Redirecting errors

Time of First Successful Submission: 2026-09-12 08:38:45

Redirecting input

Time of First Successful Submission: 2026-09-12 08:52:54

Grepping stored results

Time of First Successful Submission: 2026-09-12 12:41:05

Grepping live output

Time of First Successful Submission: 2026-09-12 12:41:59

Grepping errors

Time of First Successful Submission: 2026-09-12 12:44:10

Filtering with grep -v

Time of First Successful Submission: 2026-09-12 12:47:44

Filtering with sed

Time of First Successful Submission: 2026-09-12 12:51:47

Duplicating piped data with tee

Time of First Successful Submission: 2026-09-12 12:59:07

Process substitution for input

Time of First Successful Submission: 2026-09-12 13:11:22

Writing to multiple programs

Time of First Successful Submission: 2026-09-12 13:26:51

Split-piping stderr and stdout

Time of First Successful Submission: 2026-09-12 13:34:14

Named pipes

Time of First Successful Submission: 2026-09-12 14:04:48

Printing Variables

Time of First Successful Submission: 2026-09-13 17:16:26

Setting Variables

Time of First Successful Submission: 2026-09-13 17:17:32

Multi-word Variables

Time of First Successful Submission: 2026-09-13 17:18:46

Exporting Variables

Time of First Successful Submission: 2026-09-13 17:23:11

Printing Exported Variables

Time of First Successful Submission: 2026-09-13 17:24:18

Storing Command Output

Time of First Successful Submission: 2026-09-13 17:25:33

Reading Input

Time of First Successful Submission: 2026-09-13 17:31:10

Reading Files

Time of First Successful Submission: 2026-09-13 17:33:01

Translating characters

Time of First Successful Submission: 2026-09-14 07:51:22

Deleting characters

Time of First Successful Submission: 2026-09-14 07:52:58

Deleting newlines

Time of First Successful Submission: 2026-09-14 07:57:41

Extracting the first lines with head

Time of First Successful Submission: 2026-09-14 08:00:01

Extracting specific sections of text

Time of First Successful Submission: 2026-09-14 08:06:06

Sorting data

Time of First Successful Submission: 2026-09-14 08:07:08

Listing Processes

Time of First Successful Submission: 2026-09-15 09:28:26

Killing Processes

Time of First Successful Submission: 2026-09-15 09:33:05

Interrupting Processes

Time of First Successful Submission: 2026-09-15 09:34:48

Killing Misbehaving Processes

Time of First Successful Submission: 2026-09-15 09:39:42

Suspending Processes

Time of First Successful Submission: 2026-09-15 09:44:24

Resuming Processes

Time of First Successful Submission: 2026-09-15 09:45:19

Backgrounding Processes

Time of First Successful Submission: 2026-09-15 09:51:49

Foregrounding Processes

Time of First Successful Submission: 2026-09-15 09:59:52

Starting Backgrounded Processes

Time of First Successful Submission: 2026-09-15 10:00:39

Process Exit Codes

Time of First Successful Submission: 2026-09-15 10:01:53

Becoming root with su

Time of First Successful Submission: 2026-09-15 10:11:31

Other users with su

Time of First Successful Submission: 2026-09-15 10:25:10

Cracking passwords

Time of First Successful Submission: 2026-09-15 10:30:03

Using sudo

Time of First Successful Submission: 2026-09-15 10:37:24

Changing File Ownership

Time of First Successful Submission: 2026-09-16 12:32:50

Groups and Files

Time of First Successful Submission: 2026-09-16 12:36:05

Fun With Groups Names

Time of First Successful Submission: 2026-09-16 12:37:29

Changing Permissions

Time of First Successful Submission: 2026-09-16 12:44:29

Executable Files

Time of First Successful Submission: 2026-09-16 12:48:05

Permission Tweaking Practice

Time of First Successful Submission: 2026-09-16 12:54:37

Permissions Setting Practice

Time of First Successful Submission: 2026-09-16 12:58:18

The SUID Bit

Time of First Successful Submission: 2026-09-16 13:00:05

Chaining with Semicolons

Time of First Successful Submission: 2026-09-16 13:11:30

Building on Success

Time of First Successful Submission: 2026-09-16 13:12:42

Handling Failure

Time of First Successful Submission: 2026-09-16 13:13:58

Your First Shell Script

Time of First Successful Submission: 2026-09-16 13:17:09

Redirecting Script Output

Time of First Successful Submission: 2026-09-16 13:19:50

Executable Shell Scripts

Time of First Successful Submission: 2026-09-16 13:22:20

Understanding Shebangs

Time of First Successful Submission: 2026-09-16 13:26:42

Scripting with Arguments

Time of First Successful Submission: 2026-09-17 08:05:02

Scripting with Conditionals

Time of First Successful Submission: 2026-09-17 08:07:44

Scripting with Default Cases

Time of First Successful Submission: 2026-09-17 08:08:50

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-09-17 11:52:27

Reading Shell Scripts

Time of First Successful Submission: 2026-09-17 11:55:53

Launching Screen

Time of First Successful Submission: 2026-09-17 11:58:21

Detaching and Attaching

Time of First Successful Submission: 2026-09-17 12:06:02

Finding Sessions

Time of First Successful Submission: 2026-09-17 12:09:43

Switching Windows

Time of First Successful Submission: 2026-09-18 08:52:30

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-09-18 09:01:57

Switching Windows (tmux)

Time of First Successful Submission: 2026-09-18 09:09:16

The PATH Variable

Time of First Successful Submission: 2026-09-18 09:40:34

Setting PATH

Time of First Successful Submission: 2026-09-18 09:42:19

Finding Commands

Time of First Successful Submission: 2026-09-18 09:46:58

Adding Commands

Time of First Successful Submission: 2026-09-18 10:06:24

Hijacking Commands

Time of First Successful Submission: 2026-09-18 10:13:24

Bashrc Backdoor

Time of First Successful Submission: 2026-09-18 10:21:59

Sniffing Input

Time of First Successful Submission: 2026-09-18 10:44:57

Overshared Directories

Time of First Successful Submission: 2026-09-18 11:04:20

Tricky Linking

Time of First Successful Submission: 2026-09-18 11:22:17

Sniffing Process Arguments

Time of First Successful Submission: 2026-09-18 11:39:29

Snooping on Configurations

Time of First Successful Submission: 2026-09-18 11:42:12

The Fork Bomb

Time of First Successful Submission: 2026-09-19 12:40:44

Disk-Space Doomsday

Time of First Successful Submission: 2026-09-19 12:44:10

rm -rf /

Time of First Successful Submission: 2026-09-16 13:51:17

Life after rm -rf /

Time of First Successful Submission: 2026-09-19 12:52:00

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-09-19 12:55:07


Computing 101

29 / 132 7406 / 23778


Your First Register

Time of First Successful Submission: 2026-09-20 18:46:41

Your First Syscall

Time of First Successful Submission: 2026-09-20 18:52:45

Exit Codes

Time of First Successful Submission: 2026-09-20 18:57:47

Building Executables

Time of First Successful Submission: 2026-09-20 19:01:19

Moving Between Registers

Time of First Successful Submission: 2026-09-20 19:06:57

Loading From Memory

Time of First Successful Submission: 2026-09-21 09:53:01

More Loading Practice

Time of First Successful Submission: 2026-09-21 09:54:49

Dereferencing Pointers

Time of First Successful Submission: 2026-09-21 09:59:49

Dereferencing Yourself

Time of First Successful Submission: 2026-09-21 13:25:15

Dereferencing with Offsets

Time of First Successful Submission: 2026-09-21 13:29:26

Stored Addresses

Time of First Successful Submission: 2026-09-21 13:35:33

Double Dereference

Time of First Successful Submission: 2026-09-21 13:41:35

The Stack

Time of First Successful Submission: 2026-09-22 17:55:13

Stack Offsets

Time of First Successful Submission: 2026-09-22 17:57:42

Program Arguments on the Stack

Time of First Successful Submission: 2026-09-22 18:10:09

Popping From the Stack

Time of First Successful Submission: 2026-09-22 18:13:02

Negative Numbers

Time of First Successful Submission: 2026-09-24 19:51:27

Negative Numbers (16-bit)

Time of First Successful Submission: 2026-09-24 20:06:35

Negative Numbers (32-bit)

Time of First Successful Submission: 2026-09-24 20:14:25

Encoding Negatives

Time of First Successful Submission: 2026-09-24 20:22:15

Binary and Hex Encoding

Time of First Successful Submission: 2026-09-24 20:23:58

More Hex

Time of First Successful Submission: 2026-09-24 20:28:37

Decoding Hex

Time of First Successful Submission: 2026-09-24 20:32:36

Mixed Conversions

Time of First Successful Submission: 2026-09-24 20:49:03

Disassembling Programs

Time of First Successful Submission: 2026-09-25 15:50:16

Tracing Syscalls

Time of First Successful Submission: 2026-09-25 15:55:57

Starting GDB

Time of First Successful Submission: 2026-09-25 16:00:12

Quitting GDB

Time of First Successful Submission: 2026-09-25 16:03:28

Starting Programs in GDB

Time of First Successful Submission: 2026-09-25 16:05:49


DSU Cyber Camps

10 / 104 28105 / 67361


Using the Terminal

Time of First Successful Submission: 2026-09-09 05:24:03

Using the VSCode Workspace

Time of First Successful Submission: 2026-09-09 05:34:52

Using the GUI Desktop

Time of First Successful Submission: 2026-09-09 05:38:08

Pasting into the Desktop

Time of First Successful Submission: 2026-09-09 05:43:16

Restarting Challenges

Time of First Successful Submission: 2026-09-09 05:46:02

Challenge Programs

Time of First Successful Submission: 2026-09-15 10:38:48

The Flag File

Time of First Successful Submission: 2026-09-15 10:41:29

Using Privileged Mode

Time of First Successful Submission: 2026-09-15 10:48:55

Persistent Home Directories - One

Time of First Successful Submission: 2026-09-15 10:50:24

Persistent Home Directories - Two

Time of First Successful Submission: 2026-09-15 10:50:55


GCA CTF

10 / 104 28105 / 67361


Using the Terminal

Time of First Successful Submission: 2026-09-09 05:24:03

Using the VSCode Workspace

Time of First Successful Submission: 2026-09-09 05:34:52

Using the GUI Desktop

Time of First Successful Submission: 2026-09-09 05:38:08

Pasting into the Desktop

Time of First Successful Submission: 2026-09-09 05:43:16

Restarting Challenges

Time of First Successful Submission: 2026-09-09 05:46:02

Challenge Programs

Time of First Successful Submission: 2026-09-15 10:38:48

The Flag File

Time of First Successful Submission: 2026-09-15 10:41:29

Using Privileged Mode

Time of First Successful Submission: 2026-09-15 10:48:55

Persistent Home Directories - One

Time of First Successful Submission: 2026-09-15 10:50:24

Persistent Home Directories - Two

Time of First Successful Submission: 2026-09-15 10:50:55


Hacker History

8 / 8 84 / 187


External BBS (login)

Time of First Successful Submission: 2026-09-19 13:27:40

Internal BBS

Time of First Successful Submission: 2026-09-19 17:07:53

Join an IRC Server

Time of First Successful Submission: 2026-09-20 17:08:59

Join an IRC Server (with an IRC Client)

Time of First Successful Submission: 2026-09-20 17:10:02

Change your nickname

Time of First Successful Submission: 2026-09-20 17:12:55

Join a channel

Time of First Successful Submission: 2026-09-20 17:17:30

Message a channel

Time of First Successful Submission: 2026-09-20 17:21:17

Remove another user

Time of First Successful Submission: 2026-09-20 17:26:35