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56 / 232 3054 / 25729


level1

Time of First Successful Submission: 2026-06-14 09:08:03

level2

Time of First Successful Submission: 2026-06-14 09:08:27

level3

Time of First Successful Submission: 2026-06-14 09:09:01

level4

Time of First Successful Submission: 2026-06-14 09:09:45

level5

Time of First Successful Submission: 2026-06-14 09:11:36

level6

Time of First Successful Submission: 2026-06-14 09:12:30

level7

Time of First Successful Submission: 2026-06-14 09:13:01

level8

Time of First Successful Submission: 2026-06-14 09:14:04

level9

Time of First Successful Submission: 2026-06-14 09:14:43

level10

Time of First Successful Submission: 2026-06-14 09:15:26

level11

Time of First Successful Submission: 2026-06-15 08:35:28

level12

Time of First Successful Submission: 2026-06-15 08:36:51

level13

Time of First Successful Submission: 2026-06-15 08:37:26

level14

Time of First Successful Submission: 2026-06-15 08:38:00

level15

Time of First Successful Submission: 2026-06-15 08:40:08

level16

Time of First Successful Submission: 2026-06-15 08:41:06

level17

Time of First Successful Submission: 2026-06-15 08:42:11

level18

Time of First Successful Submission: 2026-06-15 08:43:51

level19

Time of First Successful Submission: 2026-06-15 08:47:51

level20

Time of First Successful Submission: 2026-06-15 08:50:05

level21

Time of First Successful Submission: 2026-06-16 17:46:46

level22

Time of First Successful Submission: 2026-06-16 17:47:36

level23

Time of First Successful Submission: 2026-06-16 17:47:58

level24

Time of First Successful Submission: 2026-06-16 17:49:13

level25

Time of First Successful Submission: 2026-06-16 17:50:24

level26

Time of First Successful Submission: 2026-06-16 17:52:08

level27

Time of First Successful Submission: 2026-06-16 17:53:09

level28

Time of First Successful Submission: 2026-06-16 17:54:09

level29

Time of First Successful Submission: 2026-06-16 18:08:07

level30

Time of First Successful Submission: 2026-06-16 18:08:33

level31

Time of First Successful Submission: 2026-06-17 17:34:05

level32

Time of First Successful Submission: 2026-06-17 17:35:18

level33

Time of First Successful Submission: 2026-06-17 17:42:29

level34

Time of First Successful Submission: 2026-06-17 17:44:26

level35

Time of First Successful Submission: 2026-06-17 17:45:24

level36

Time of First Successful Submission: 2026-06-17 17:50:06

level37

Time of First Successful Submission: 2026-06-17 17:50:59

level38

Time of First Successful Submission: 2026-06-17 17:57:42

level39

Time of First Successful Submission: 2026-06-17 17:58:23

level40

Time of First Successful Submission: 2026-06-17 18:01:00

HTTP (curl)

Time of First Successful Submission: 2024-10-08 10:02:29

HTTP (python)

Time of First Successful Submission: 2024-10-08 10:04:56

URL Encoding (curl)

Time of First Successful Submission: 2024-10-08 10:11:17

URL Encoding (python)

Time of First Successful Submission: 2024-10-08 10:13:13

HTTP GET Parameters (netcat)

Time of First Successful Submission: 2024-10-08 10:15:30

HTTP GET Parameters (python)

Time of First Successful Submission: 2024-10-08 10:16:24

Multiple HTTP Parameters (python)

Time of First Successful Submission: 2024-10-08 12:58:56

Multiple Form Fields (python)

Time of First Successful Submission: 2024-10-08 13:12:47

HTTP JSON (curl)

Time of First Successful Submission: 2024-10-08 13:14:09

HTTP JSON (netcat)

Time of First Successful Submission: 2024-10-08 13:15:56

HTTP JSON (python)

Time of First Successful Submission: 2024-10-08 13:17:04

Complex HTTP JSON (curl)

Time of First Successful Submission: 2024-10-08 13:24:15

Complex HTTP JSON (netcat)

Time of First Successful Submission: 2024-10-08 13:26:26

Complex HTTP JSON (python)

Time of First Successful Submission: 2024-10-08 13:28:07

Server State (curl)

Time of First Successful Submission: 2024-10-08 13:45:21

Server State (netcat)

Time of First Successful Submission: 2024-10-08 13:48:33

Triple Dereference

Time of First Successful Submission: 2026-06-14 18:22:33


Intro to Programming Languages

15 / 253 10845 / 35335


Commands

Time of First Successful Submission: 2024-10-07 19:50:55

Command Arguments

Time of First Successful Submission: 2024-10-07 19:51:24

Command History

Time of First Successful Submission: 2026-06-02 08:42:18

The Root Path

Time of First Successful Submission: 2024-10-07 19:52:13

Absolute Paths

Time of First Successful Submission: 2024-10-07 19:52:49

Changing position

Time of First Successful Submission: 2024-10-07 19:53:49

Changing to an Absolute Path

Time of First Successful Submission: 2024-10-07 19:54:25

Relative Paths

Time of First Successful Submission: 2024-10-07 19:55:36

Cat

Time of First Successful Submission: 2024-10-07 20:00:13

Ls

Time of First Successful Submission: 2024-10-07 20:02:42

Ls All

Time of First Successful Submission: 2024-10-07 20:04:20

Find

Time of First Successful Submission: 2024-10-07 20:13:01

Piping Echo

Time of First Successful Submission: 2024-10-08 09:18:13

Piping Stdout

Time of First Successful Submission: 2024-10-08 09:19:00

Piping Stdin

Time of First Successful Submission: 2024-10-08 09:23:05


Intro to Cybersecurity

58 / 183 6023 / 21330


Path Traversal 1

Time of First Successful Submission: 2024-10-08 18:56:11

Path Traversal 2

Time of First Successful Submission: 2024-10-09 13:59:25

CMDi 1

Time of First Successful Submission: 2024-10-09 14:01:28

CMDi 2

Time of First Successful Submission: 2024-10-09 14:04:48

CMDi 3

Time of First Successful Submission: 2024-10-09 14:09:21

CMDi 4

Time of First Successful Submission: 2024-10-09 14:12:25

CMDi 5

Time of First Successful Submission: 2024-10-09 14:14:53

CMDi 6

Time of First Successful Submission: 2024-10-09 14:21:08

Authentication Bypass 1

Time of First Successful Submission: 2024-10-09 14:31:24

Authentication Bypass 2

Time of First Successful Submission: 2024-10-09 14:33:21

SQLi 1

Time of First Successful Submission: 2024-10-09 14:37:15

SQLi 2

Time of First Successful Submission: 2024-10-09 14:38:50

SQLi 3

Time of First Successful Submission: 2024-10-09 14:43:51

SQLi 4

Time of First Successful Submission: 2024-10-09 20:34:21

SQLi 5

Time of First Successful Submission: 2024-10-09 20:56:32

XSS 1

Time of First Successful Submission: 2024-10-10 05:48:30

XSS 2

Time of First Successful Submission: 2024-10-10 05:49:53

XSS 3

Time of First Successful Submission: 2024-10-10 05:52:31

XSS 4

Time of First Successful Submission: 2024-10-10 05:55:59

Connect

Time of First Successful Submission: 2024-10-09 14:55:58

Send

Time of First Successful Submission: 2026-06-12 16:39:40

Shutdown

Time of First Successful Submission: 2026-06-12 16:41:09

Listen

Time of First Successful Submission: 2024-10-09 14:56:52

Scan 1

Time of First Successful Submission: 2024-10-09 14:58:54

Scan 2

Time of First Successful Submission: 2026-06-12 17:00:22

Monitor 1

Time of First Successful Submission: 2026-06-12 17:03:03

Monitor 2

Time of First Successful Submission: 2026-06-12 17:24:30

Sniffing Cookies

Time of First Successful Submission: 2026-06-15 20:01:13

Network Configuration

Time of First Successful Submission: 2026-06-15 20:15:52

Firewall 1

Time of First Successful Submission: 2026-06-15 20:20:03

XOR

Time of First Successful Submission: 2024-10-09 12:29:45

XORing Hex

Time of First Successful Submission: 2024-10-09 12:38:14

XORing ASCII

Time of First Successful Submission: 2024-10-09 12:44:47

XORing ASCII Strings

Time of First Successful Submission: 2024-10-09 12:48:16

One-time Pad

Time of First Successful Submission: 2024-10-09 12:51:02

One-time Pad Tampering

Time of First Successful Submission: 2026-06-13 12:08:33

Many-time Pad

Time of First Successful Submission: 2024-10-09 12:59:53

AES

Time of First Successful Submission: 2024-10-09 13:02:50

level1

Time of First Successful Submission: 2024-10-09 13:04:52

level2

Time of First Successful Submission: 2024-10-09 13:05:23

level3

Time of First Successful Submission: 2024-10-09 13:06:01

level4

Time of First Successful Submission: 2024-10-09 13:06:42

level5

Time of First Successful Submission: 2024-10-09 13:12:23

level6

Time of First Successful Submission: 2024-10-09 13:16:35

level7

Time of First Successful Submission: 2024-10-09 13:17:30

level8

Time of First Successful Submission: 2024-10-09 13:18:14

level9

Time of First Successful Submission: 2024-10-09 13:19:13

level10

Time of First Successful Submission: 2024-10-09 13:22:26

level11

Time of First Successful Submission: 2024-10-09 13:25:52

level12

Time of First Successful Submission: 2024-10-09 13:28:07

level13

Time of First Successful Submission: 2024-10-09 13:29:06

level14

Time of First Successful Submission: 2024-10-09 13:30:05

level15

Time of First Successful Submission: 2024-10-09 13:31:40

level16

Time of First Successful Submission: 2024-10-09 13:34:03

Your First Overflow (easy)

Time of First Successful Submission: 2026-06-14 17:40:47

Your First Overflow (hard)

Time of First Successful Submission: 2026-06-14 17:43:37

Precision (easy)

Time of First Successful Submission: 2026-06-14 17:48:37

Precision (hard)

Time of First Successful Submission: 2026-06-14 18:00:46


Start Here

12 / 12 2926 / 48085


Using the Terminal

Time of First Successful Submission: 2026-06-02 08:41:10

Using the VSCode Workspace

Time of First Successful Submission: 2024-10-07 19:35:35

Using the GUI Desktop

Time of First Successful Submission: 2024-10-07 19:36:58

Pasting into the Desktop

Time of First Successful Submission: 2024-10-07 19:38:13

Restarting Challenges

Time of First Successful Submission: 2024-10-07 19:39:52

Challenge Programs

Time of First Successful Submission: 2024-10-07 19:42:20

The Flag File

Time of First Successful Submission: 2024-10-07 19:43:40

Using Privileged Mode

Time of First Successful Submission: 2024-10-07 19:46:57

Persistent Home Directories - One

Time of First Successful Submission: 2024-10-07 19:48:45

Persistent Home Directories - Two

Time of First Successful Submission: 2024-10-07 19:49:25


Linux Luminarium

128 / 128 3327 / 35819


Intro to Commands

Time of First Successful Submission: 2024-10-07 19:50:55

Intro to Arguments

Time of First Successful Submission: 2024-10-07 19:51:24

Command History

Time of First Successful Submission: 2026-06-02 08:42:18

The Root

Time of First Successful Submission: 2024-10-07 19:52:13

Program and absolute paths

Time of First Successful Submission: 2024-10-07 19:52:49

Position thy self

Time of First Successful Submission: 2024-10-07 19:53:49

Position elsewhere

Time of First Successful Submission: 2024-10-07 19:54:25

implicit relative paths, from /

Time of First Successful Submission: 2024-10-07 19:55:36

explicit relative paths, from /

Time of First Successful Submission: 2024-10-07 19:56:26

implicit relative path

Time of First Successful Submission: 2024-10-07 19:57:11

home sweet home

Time of First Successful Submission: 2024-10-07 19:58:27

cat: not the pet, but the command!

Time of First Successful Submission: 2024-10-07 20:00:13

catting absolute paths

Time of First Successful Submission: 2024-10-07 20:00:46

more catting practice

Time of First Successful Submission: 2024-10-07 20:01:23

grepping for a needle in a haystack

Time of First Successful Submission: 2024-10-07 20:02:12

comparing files

Time of First Successful Submission: 2026-06-02 08:43:31

listing files

Time of First Successful Submission: 2024-10-07 20:02:42

touching files

Time of First Successful Submission: 2024-10-07 20:03:14

removing files

Time of First Successful Submission: 2024-10-07 20:03:47

moving files

Time of First Successful Submission: 2026-06-02 08:44:13

copying files

Time of First Successful Submission: 2026-06-02 08:44:43

hidden files

Time of First Successful Submission: 2024-10-07 20:04:20

An Epic Filesystem Quest

Time of First Successful Submission: 2024-10-07 20:10:50

making directories

Time of First Successful Submission: 2024-10-07 20:11:24

finding files

Time of First Successful Submission: 2024-10-07 20:13:01

linking files

Time of First Successful Submission: 2024-10-07 20:15:06

Learning From Documentation

Time of First Successful Submission: 2024-10-07 20:35:12

Learning Complex Usage

Time of First Successful Submission: 2024-10-07 20:35:53

Reading Manuals

Time of First Successful Submission: 2024-10-07 20:36:39

Searching Manuals

Time of First Successful Submission: 2024-10-07 20:37:58

Searching For Manuals

Time of First Successful Submission: 2024-10-07 20:46:43

Helpful Programs

Time of First Successful Submission: 2024-10-07 20:47:35

Help for Builtins

Time of First Successful Submission: 2024-10-07 20:48:51

Matching with *

Time of First Successful Submission: 2024-10-08 09:06:09

Matching with ?

Time of First Successful Submission: 2024-10-08 09:07:10

Matching with []

Time of First Successful Submission: 2024-10-08 09:08:52

Matching paths with []

Time of First Successful Submission: 2024-10-08 09:09:48

Multiple globs

Time of First Successful Submission: 2026-06-02 08:46:16

Mixing globs

Time of First Successful Submission: 2024-10-08 09:13:56

Exclusionary globbing

Time of First Successful Submission: 2024-10-08 09:16:35

Tab completion

Time of First Successful Submission: 2026-06-02 08:46:46

Multiple options for tab completion

Time of First Successful Submission: 2026-06-02 08:47:58

Tab completion on commands

Time of First Successful Submission: 2026-06-02 08:48:34

Redirecting output

Time of First Successful Submission: 2024-10-08 09:18:13

Redirecting more output

Time of First Successful Submission: 2024-10-08 09:19:00

Appending output

Time of First Successful Submission: 2024-10-08 09:20:23

Redirecting errors

Time of First Successful Submission: 2024-10-08 09:21:32

Redirecting input

Time of First Successful Submission: 2024-10-08 09:23:05

Grepping stored results

Time of First Successful Submission: 2024-10-08 09:24:14

Grepping live output

Time of First Successful Submission: 2024-10-08 09:24:47

Grepping errors

Time of First Successful Submission: 2024-10-08 09:25:37

Filtering with grep -v

Time of First Successful Submission: 2026-06-02 08:50:52

Filtering with sed

Time of First Successful Submission: 2026-06-02 08:51:42

Duplicating piped data with tee

Time of First Successful Submission: 2024-10-08 09:28:18

Process substitution for input

Time of First Successful Submission: 2026-06-02 08:52:57

Writing to multiple programs

Time of First Successful Submission: 2024-10-08 09:31:36

Split-piping stderr and stdout

Time of First Successful Submission: 2024-10-08 09:54:59

Named pipes

Time of First Successful Submission: 2026-06-02 08:55:40

Printing Variables

Time of First Successful Submission: 2024-10-08 09:56:03

Setting Variables

Time of First Successful Submission: 2024-10-08 09:56:33

Multi-word Variables

Time of First Successful Submission: 2024-10-08 09:57:02

Exporting Variables

Time of First Successful Submission: 2024-10-08 09:58:16

Printing Exported Variables

Time of First Successful Submission: 2024-10-08 09:58:50

Storing Command Output

Time of First Successful Submission: 2024-10-08 09:59:42

Reading Input

Time of First Successful Submission: 2024-10-08 10:00:25

Reading Files

Time of First Successful Submission: 2024-10-08 10:01:14

Translating characters

Time of First Successful Submission: 2026-06-02 08:59:01

Deleting characters

Time of First Successful Submission: 2026-06-02 08:59:37

Deleting newlines

Time of First Successful Submission: 2026-06-02 09:00:28

Extracting the first lines with head

Time of First Successful Submission: 2026-06-02 09:01:23

Extracting specific sections of text

Time of First Successful Submission: 2026-06-02 09:02:25

Sorting data

Time of First Successful Submission: 2026-06-02 09:03:24

Listing Processes

Time of First Successful Submission: 2024-10-08 12:50:17

Killing Processes

Time of First Successful Submission: 2024-10-08 12:50:51

Interrupting Processes

Time of First Successful Submission: 2024-10-08 12:51:28

Killing Misbehaving Processes

Time of First Successful Submission: 2026-06-02 09:04:39

Suspending Processes

Time of First Successful Submission: 2024-10-08 12:52:09

Resuming Processes

Time of First Successful Submission: 2024-10-08 12:52:47

Backgrounding Processes

Time of First Successful Submission: 2024-10-08 12:54:05

Foregrounding Processes

Time of First Successful Submission: 2024-10-08 12:55:09

Starting Backgrounded Processes

Time of First Successful Submission: 2024-10-08 12:55:56

Process Exit Codes

Time of First Successful Submission: 2024-10-08 12:56:47

Becoming root with su

Time of First Successful Submission: 2024-10-07 20:17:02

Other users with su

Time of First Successful Submission: 2024-10-07 20:18:04

Cracking passwords

Time of First Successful Submission: 2024-10-07 20:19:40

Using sudo

Time of First Successful Submission: 2024-10-07 20:20:23

Changing File Ownership

Time of First Successful Submission: 2024-10-08 10:32:30

Groups and Files

Time of First Successful Submission: 2024-10-08 10:33:30

Fun With Groups Names

Time of First Successful Submission: 2024-10-08 10:34:21

Changing Permissions

Time of First Successful Submission: 2024-10-08 10:35:51

Executable Files

Time of First Successful Submission: 2024-10-08 10:36:23

Permission Tweaking Practice

Time of First Successful Submission: 2024-10-08 10:48:46

Permissions Setting Practice

Time of First Successful Submission: 2024-10-08 10:57:06

The SUID Bit

Time of First Successful Submission: 2024-10-08 10:58:13

Chaining with Semicolons

Time of First Successful Submission: 2024-10-07 20:21:29

Building on Success

Time of First Successful Submission: 2026-06-02 09:18:18

Handling Failure

Time of First Successful Submission: 2026-06-02 09:18:44

Your First Shell Script

Time of First Successful Submission: 2024-10-07 20:22:28

Redirecting Script Output

Time of First Successful Submission: 2024-10-07 20:23:36

Executable Shell Scripts

Time of First Successful Submission: 2024-10-07 20:24:38

Understanding Shebangs

Time of First Successful Submission: 2026-06-02 09:19:52

Scripting with Arguments

Time of First Successful Submission: 2026-06-02 09:20:48

Scripting with Conditionals

Time of First Successful Submission: 2026-06-02 09:22:19

Scripting with Default Cases

Time of First Successful Submission: 2026-06-02 09:26:49

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-06-02 09:28:05

Reading Shell Scripts

Time of First Successful Submission: 2026-06-02 09:28:49

Launching Screen

Time of First Successful Submission: 2026-06-02 09:30:28

Detaching and Attaching

Time of First Successful Submission: 2026-06-02 09:31:24

Finding Sessions

Time of First Successful Submission: 2026-06-02 09:32:03

Switching Windows

Time of First Successful Submission: 2026-06-02 09:32:53

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-06-02 09:33:43

Switching Windows (tmux)

Time of First Successful Submission: 2026-06-02 09:34:23

The PATH Variable

Time of First Successful Submission: 2024-10-07 20:27:40

Setting PATH

Time of First Successful Submission: 2024-10-07 20:28:27

Finding Commands

Time of First Successful Submission: 2026-06-02 09:29:30

Adding Commands

Time of First Successful Submission: 2024-10-07 20:31:09

Hijacking Commands

Time of First Successful Submission: 2024-10-07 20:32:56

Bashrc Backdoor

Time of First Successful Submission: 2026-06-02 09:36:30

Sniffing Input

Time of First Successful Submission: 2026-06-02 09:41:06

Overshared Directories

Time of First Successful Submission: 2026-06-02 09:43:28

Tricky Linking

Time of First Successful Submission: 2026-06-02 09:52:05

Sniffing Process Arguments

Time of First Successful Submission: 2026-06-02 09:53:27

Snooping on Configurations

Time of First Successful Submission: 2026-06-02 09:54:30

The Fork Bomb

Time of First Successful Submission: 2026-06-02 09:08:41

Disk-Space Doomsday

Time of First Successful Submission: 2026-06-02 09:10:42

rm -rf /

Time of First Successful Submission: 2026-06-02 09:12:20

Life after rm -rf /

Time of First Successful Submission: 2026-06-02 09:15:26

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-06-02 09:16:57


Computing 101

126 / 128 4 / 20566


Your First Register

Time of First Successful Submission: 2026-06-11 09:33:49

Your First Syscall

Time of First Successful Submission: 2026-06-11 09:35:08

Exit Codes

Time of First Successful Submission: 2026-06-11 09:36:09

Building Executables

Time of First Successful Submission: 2026-06-11 09:38:30

Moving Between Registers

Time of First Successful Submission: 2026-06-11 09:39:32

Loading From Memory

Time of First Successful Submission: 2026-06-11 09:41:02

More Loading Practice

Time of First Successful Submission: 2026-06-11 09:41:45

Dereferencing Pointers

Time of First Successful Submission: 2026-06-11 09:42:57

Dereferencing Yourself

Time of First Successful Submission: 2026-06-11 09:43:47

Dereferencing with Offsets

Time of First Successful Submission: 2026-06-11 09:45:30

Stored Addresses

Time of First Successful Submission: 2026-06-11 09:46:48

Double Dereference

Time of First Successful Submission: 2026-06-11 09:47:59

The Stack

Time of First Successful Submission: 2026-06-11 09:48:59

Stack Offsets

Time of First Successful Submission: 2026-06-11 09:49:41

Program Arguments on the Stack

Time of First Successful Submission: 2026-06-11 09:52:36

Popping From the Stack

Time of First Successful Submission: 2026-06-11 09:54:32

Negative Numbers

Time of First Successful Submission: 2026-06-11 10:11:37

Negative Numbers (16-bit)

Time of First Successful Submission: 2026-06-11 10:14:52

Negative Numbers (32-bit)

Time of First Successful Submission: 2026-06-11 10:16:45

Encoding Negatives

Time of First Successful Submission: 2026-06-11 14:06:18

Binary and Hex Encoding

Time of First Successful Submission: 2026-06-11 14:07:07

More Hex

Time of First Successful Submission: 2026-06-11 14:08:15

Decoding Hex

Time of First Successful Submission: 2026-06-11 14:09:12

Mixed Conversions

Time of First Successful Submission: 2026-06-11 14:14:18

Disassembling Programs

Time of First Successful Submission: 2026-06-11 14:16:03

Tracing Syscalls

Time of First Successful Submission: 2026-06-11 14:16:36

Starting GDB

Time of First Successful Submission: 2026-06-11 14:17:17

Quitting GDB

Time of First Successful Submission: 2026-06-11 14:17:42

Starting Programs in GDB

Time of First Successful Submission: 2026-06-11 14:19:02

Disassembling in GDB

Time of First Successful Submission: 2026-06-11 14:19:54

Stepping Through Instructions

Time of First Successful Submission: 2026-06-11 14:21:04

Reading Register Values

Time of First Successful Submission: 2026-06-11 14:21:46

Popping Stack Values

Time of First Successful Submission: 2026-06-11 14:22:58

Examining Memory

Time of First Successful Submission: 2026-06-11 14:23:44

Examining Stack Pointers

Time of First Successful Submission: 2026-06-11 14:24:57

Cooperative Debugging

Time of First Successful Submission: 2026-06-11 14:27:41

Running with Arguments

Time of First Successful Submission: 2026-06-11 14:28:15

Writing Output

Time of First Successful Submission: 2026-06-11 14:38:10

Chaining Syscalls

Time of First Successful Submission: 2026-06-11 14:39:23

Writing Strings

Time of First Successful Submission: 2026-06-11 14:39:59

Reading Data

Time of First Successful Submission: 2026-06-11 14:42:41

Reading Exactly

Time of First Successful Submission: 2026-06-15 19:21:17

Opening Files

Time of First Successful Submission: 2026-06-11 14:54:32

Hardcoding the Filename

Time of First Successful Submission: 2026-06-11 15:04:46

RIP-Relative Strings

Time of First Successful Submission: 2026-06-12 14:58:30

Comparing Values

Time of First Successful Submission: 2026-06-12 15:06:18

Comparing Characters

Time of First Successful Submission: 2026-06-12 15:08:20

Conditional Control Flow

Time of First Successful Submission: 2026-06-12 15:13:50

Comparing Strings

Time of First Successful Submission: 2026-06-12 15:15:17

Reverse the Password

Time of First Successful Submission: 2026-06-12 15:16:48

Conditionals Without Conditionals

Time of First Successful Submission: 2026-06-12 15:25:26

Looping

Time of First Successful Submission: 2026-06-12 15:26:47

Writing From a Shared Library

Time of First Successful Submission: 2026-06-12 15:32:43

Returning a Value

Time of First Successful Submission: 2026-06-12 15:36:53

Calling Through a Pointer

Time of First Successful Submission: 2026-06-12 15:38:35

Calling Through a Pointer with an Argument

Time of First Successful Submission: 2026-06-12 15:39:49

Saving Caller-Saved Registers

Time of First Successful Submission: 2026-06-12 15:46:37

Saving Callee-Saved Registers

Time of First Successful Submission: 2026-06-12 15:50:44

Sign Extension

Time of First Successful Submission: 2026-06-13 12:12:18

Little-Endian Bytes

Time of First Successful Submission: 2026-06-12 15:56:18

Qword by Qword

Time of First Successful Submission: 2026-06-12 18:42:54

Dword by Dword

Time of First Successful Submission: 2026-06-12 18:49:09

Word by Word

Time of First Successful Submission: 2026-06-12 18:50:51

Byte by Byte

Time of First Successful Submission: 2026-06-12 18:52:27

Cracking a Struct

Time of First Successful Submission: 2026-06-12 18:55:36

Scrambled Struct

Time of First Successful Submission: 2026-06-12 18:59:29

Reverse the Calculation

Time of First Successful Submission: 2026-06-12 19:01:28

Reverse the Reverse

Time of First Successful Submission: 2026-06-12 19:02:03

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-06-12 19:02:35

Even or Odd

Time of First Successful Submission: 2026-06-12 19:07:24

Masking Bits

Time of First Successful Submission: 2026-06-12 19:08:29

Lowercase a String

Time of First Successful Submission: 2026-06-12 19:10:33

Uppercase a String

Time of First Successful Submission: 2026-06-12 19:15:25

Swap Case

Time of First Successful Submission: 2026-06-12 19:16:11

Shifting Left

Time of First Successful Submission: 2026-06-12 19:17:30

Shifting Right

Time of First Successful Submission: 2026-06-12 19:18:13

Loops on Data

Time of First Successful Submission: 2026-06-12 19:18:54

Reaching Into the Caller's Frame

Time of First Successful Submission: 2026-06-12 19:24:02

Using Your Own Frame

Time of First Successful Submission: 2026-06-12 19:49:28

Environment Variables on the Stack

Time of First Successful Submission: 2026-06-12 19:54:14

Aligning the Stack Through the Environment

Time of First Successful Submission: 2026-06-12 19:57:56

Aligning the Stack Through GDB

Time of First Successful Submission: 2026-06-12 20:00:41

Aligning the Stack Through GDB, Generalized

Time of First Successful Submission: 2026-06-12 20:02:26

A Single Digit

Time of First Successful Submission: 2026-06-13 13:04:57

Two Digits

Time of First Successful Submission: 2026-06-13 13:10:16

String to Integer

Time of First Successful Submission: 2026-06-13 13:22:27

Negative Numbers

Time of First Successful Submission: 2026-06-13 15:57:10

Where the Number Ends

Time of First Successful Submission: 2026-06-13 16:02:39

A Whole Program

Time of First Successful Submission: 2026-06-13 16:13:27

A Single Digit, Back to Text

Time of First Successful Submission: 2026-06-13 16:15:43

Divide and Remainder

Time of First Successful Submission: 2026-06-13 16:31:19

Drop the Leading Zero

Time of First Successful Submission: 2026-06-13 16:49:54

Integer to String

Time of First Successful Submission: 2026-06-13 16:52:26

Negative Numbers, Back to Text

Time of First Successful Submission: 2026-06-13 17:04:48

Sum Them All

Time of First Successful Submission: 2026-06-13 17:38:51

Addition

Time of First Successful Submission: 2026-06-14 12:21:49

Subtraction

Time of First Successful Submission: 2026-06-14 12:23:05

Multiplication

Time of First Successful Submission: 2026-06-14 12:24:14

Bitwise Operators

Time of First Successful Submission: 2026-06-14 12:24:56

Unary Operators

Time of First Successful Submission: 2026-06-14 12:25:30

Literal Output

Time of First Successful Submission: 2026-06-15 16:10:40

Newline Escapes

Time of First Successful Submission: 2026-06-15 16:49:53

Escaped Syntax

Time of First Successful Submission: 2026-06-15 16:59:13

Decimal Markers

Time of First Successful Submission: 2026-06-15 17:23:43

Multiple Decimal Markers

Time of First Successful Submission: 2026-06-15 17:24:07

String Markers

Time of First Successful Submission: 2026-06-15 17:34:34

Hex Byte Escapes

Time of First Successful Submission: 2026-06-15 17:55:10

Exit

Time of First Successful Submission: 2024-10-08 14:00:17

Socket

Time of First Successful Submission: 2024-10-08 14:03:55

Bind

Time of First Successful Submission: 2024-10-08 14:42:46

Listen

Time of First Successful Submission: 2024-10-08 14:46:05

Accept

Time of First Successful Submission: 2024-10-08 14:55:48

Static Response

Time of First Successful Submission: 2024-10-08 15:05:25

Dynamic Response

Time of First Successful Submission: 2024-10-09 09:38:19

Iterative GET Server

Time of First Successful Submission: 2024-10-09 09:41:38

Concurrent GET Server

Time of First Successful Submission: 2024-10-09 10:55:24

Concurrent POST Server

Time of First Successful Submission: 2026-06-14 17:18:30

Web Server

Time of First Successful Submission: 2026-06-14 17:19:24

Debugging Programs

Time of First Successful Submission: 2026-06-12 20:03:49

Inspecting Registers

Time of First Successful Submission: 2026-06-12 20:05:15

Examining Memory

Time of First Successful Submission: 2026-06-12 20:09:04

Setting Breakpoints

Time of First Successful Submission: 2026-06-12 20:25:55

GDB Scripting

Time of First Successful Submission: 2026-06-14 08:38:55

Modifying Data

Time of First Successful Submission: 2026-06-14 08:49:42

Modifying Execution

Time of First Successful Submission: 2026-06-14 08:50:47

Broken Functions

Time of First Successful Submission: 2026-06-14 08:57:20


Playing With Programs

116 / 116 1008 / 24155


What's the password?

Time of First Successful Submission: 2026-06-12 16:11:03

... and again!

Time of First Successful Submission: 2026-06-12 16:11:30

Newline Troubles

Time of First Successful Submission: 2026-06-12 16:12:06

Reasoning about files

Time of First Successful Submission: 2026-06-12 16:14:11

Specifying Filenames

Time of First Successful Submission: 2026-06-12 16:14:48

Binary and Hex Encoding

Time of First Successful Submission: 2026-06-12 16:16:32

More Hex

Time of First Successful Submission: 2026-06-12 16:17:07

Decoding Hex

Time of First Successful Submission: 2026-06-12 16:19:26

Decoding Practice

Time of First Successful Submission: 2026-06-12 16:20:38

Encoding Practice

Time of First Successful Submission: 2026-06-12 16:22:01

Hex-encoding ASCII

Time of First Successful Submission: 2026-06-12 16:23:14

Nested Encoding

Time of First Successful Submission: 2026-06-12 16:25:13

Hex-encoding UTF-8

Time of First Successful Submission: 2026-06-12 16:26:30

UTF Mixups

Time of First Successful Submission: 2026-06-12 16:28:30

Modifying Encoded Data

Time of First Successful Submission: 2026-06-12 16:30:42

Decoding Base64

Time of First Successful Submission: 2024-10-09 12:48:50

Encoding Base64

Time of First Successful Submission: 2026-06-12 16:31:34

Dealing with Obfuscation

Time of First Successful Submission: 2026-06-12 16:33:24

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-06-12 16:36:33

Your First HTTP Request

Time of First Successful Submission: 2026-06-11 12:41:07

Reading Flask

Time of First Successful Submission: 2026-06-11 12:43:37

Commented Data

Time of First Successful Submission: 2026-06-13 17:44:52

HTTP Metadata

Time of First Successful Submission: 2026-06-13 17:46:15

HTTP (netcat)

Time of First Successful Submission: 2024-10-08 10:04:10

HTTP Paths (netcat)

Time of First Successful Submission: 2024-10-08 10:08:38

HTTP (curl)

Time of First Successful Submission: 2024-10-08 10:07:53

HTTP (python)

Time of First Successful Submission: 2024-10-08 10:09:34

HTTP Host Header (python)

Time of First Successful Submission: 2024-10-08 10:07:16

HTTP Host Header (curl)

Time of First Successful Submission: 2024-10-08 10:05:37

HTTP Host Header (netcat)

Time of First Successful Submission: 2024-10-08 10:06:19

URL Encoding (netcat)

Time of First Successful Submission: 2024-10-08 10:14:07

HTTP GET Parameters

Time of First Successful Submission: 2024-10-08 10:14:46

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2024-10-08 10:20:40

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2024-10-08 10:18:35

HTTP Forms

Time of First Successful Submission: 2026-06-13 17:48:45

HTTP Forms (curl)

Time of First Successful Submission: 2024-10-08 12:59:51

HTTP Forms (netcat)

Time of First Successful Submission: 2024-10-08 13:06:03

HTTP Forms (python)

Time of First Successful Submission: 2024-10-08 13:06:58

HTTP Forms Without Forms

Time of First Successful Submission: 2026-06-13 17:49:57

Multiple Form Fields (curl)

Time of First Successful Submission: 2024-10-08 13:08:17

Multiple Form Fields (netcat)

Time of First Successful Submission: 2024-10-08 13:10:46

HTTP Redirects (netcat)

Time of First Successful Submission: 2024-10-08 13:30:21

HTTP Redirects (curl)

Time of First Successful Submission: 2024-10-08 13:28:59

HTTP Redirects (python)

Time of First Successful Submission: 2024-10-08 13:31:07

HTTP Cookies (curl)

Time of First Successful Submission: 2024-10-08 13:32:56

HTTP Cookies (netcat)

Time of First Successful Submission: 2024-10-08 13:34:02

HTTP Cookies (python)

Time of First Successful Submission: 2024-10-08 13:34:52

Server State (python)

Time of First Successful Submission: 2024-10-08 13:49:29

Listening Web

Time of First Successful Submission: 2026-06-13 17:51:55

Speaking Redirects

Time of First Successful Submission: 2026-06-13 17:56:28

JavaScript Redirects

Time of First Successful Submission: 2026-06-13 17:59:24

Including JavaScript

Time of First Successful Submission: 2026-06-13 18:17:49

HTTP (javascript)

Time of First Successful Submission: 2026-06-13 20:52:29

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-06-13 20:55:31

HTTP Forms (javascript)

Time of First Successful Submission: 2026-06-13 20:59:31

cat

Time of First Successful Submission: 2024-10-08 20:17:52

more

Time of First Successful Submission: 2024-10-08 20:18:33

less

Time of First Successful Submission: 2024-10-08 20:21:00

tail

Time of First Successful Submission: 2024-10-08 20:21:39

head

Time of First Successful Submission: 2024-10-08 20:22:08

sort

Time of First Successful Submission: 2024-10-08 20:22:39

vim

Time of First Successful Submission: 2024-10-08 20:24:55

emacs

Time of First Successful Submission: 2024-10-10 06:34:28

nano

Time of First Successful Submission: 2024-10-10 06:35:01

rev

Time of First Successful Submission: 2024-10-10 06:35:46

od

Time of First Successful Submission: 2024-10-10 06:44:33

hd

Time of First Successful Submission: 2024-10-10 06:47:01

xxd

Time of First Successful Submission: 2024-10-10 06:47:55

base32

Time of First Successful Submission: 2024-10-10 06:49:01

base64

Time of First Successful Submission: 2024-10-10 06:49:35

split

Time of First Successful Submission: 2024-10-10 06:51:18

gzip

Time of First Successful Submission: 2024-10-10 06:56:02

bzip2

Time of First Successful Submission: 2024-10-10 06:57:28

zip

Time of First Successful Submission: 2024-10-10 07:00:47

tar

Time of First Successful Submission: 2024-10-10 07:03:16

ar

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

cpio

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

genisoimage

Time of First Successful Submission: 2024-10-10 07:09:32

env

Time of First Successful Submission: 2024-10-10 07:10:29

find

Time of First Successful Submission: 2024-10-10 07:16:06

make

Time of First Successful Submission: 2024-10-10 07:16:54

nice

Time of First Successful Submission: 2024-10-10 07:17:56

timeout

Time of First Successful Submission: 2024-10-10 07:18:27

stdbuf

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

setarch

Time of First Successful Submission: 2024-10-10 07:21:28

watch

Time of First Successful Submission: 2024-10-10 07:30:11

socat

Time of First Successful Submission: 2024-10-10 07:32:01

whiptail

Time of First Successful Submission: 2024-10-10 07:50:21

awk

Time of First Successful Submission: 2026-06-11 11:03:04

sed

Time of First Successful Submission: 2026-06-11 11:04:39

ed

Time of First Successful Submission: 2026-06-11 11:07:33

chown

Time of First Successful Submission: 2026-06-11 11:08:12

chmod

Time of First Successful Submission: 2026-06-11 11:08:37

cp

Time of First Successful Submission: 2026-06-11 11:11:17

mv

Time of First Successful Submission: 2026-06-11 11:20:57

perl

Time of First Successful Submission: 2026-06-11 11:21:53

python

Time of First Successful Submission: 2026-06-11 11:22:44

ruby

Time of First Successful Submission: 2026-06-11 11:24:17

bash

Time of First Successful Submission: 2026-06-11 11:29:45

date

Time of First Successful Submission: 2026-06-11 11:31:32

dmesg

Time of First Successful Submission: 2026-06-11 11:32:14

wc

Time of First Successful Submission: 2026-06-11 11:34:04

gcc

Time of First Successful Submission: 2026-06-11 11:35:36

as

Time of First Successful Submission: 2026-06-11 11:36:21

wget

Time of First Successful Submission: 2026-06-11 11:56:48

ssh-keygen

Time of First Successful Submission: 2026-06-11 11:51:33

SQL Queries

Time of First Successful Submission: 2026-06-11 12:02:58

Filtering SQL

Time of First Successful Submission: 2026-06-11 12:05:48

Choosing Columns

Time of First Successful Submission: 2026-06-11 12:08:11

Exclusionary Filtering

Time of First Successful Submission: 2026-06-11 12:09:28

Filtering Strings

Time of First Successful Submission: 2026-06-11 12:10:16

Filtering on Expressions

Time of First Successful Submission: 2026-06-11 12:11:20

SELECTing Expressions

Time of First Successful Submission: 2026-06-11 12:24:36

Composite Conditions

Time of First Successful Submission: 2026-06-11 12:27:20

Reaching Your LIMITs

Time of First Successful Submission: 2026-06-11 12:28:19

Querying Metadata

Time of First Successful Submission: 2026-06-11 12:36:29


DSU Cyber Camps

12 / 104 3222 / 48380


Using the Terminal

Time of First Successful Submission: 2026-06-02 08:41:10

Using the VSCode Workspace

Time of First Successful Submission: 2024-10-07 19:35:35

Using the GUI Desktop

Time of First Successful Submission: 2024-10-07 19:36:58

Pasting into the Desktop

Time of First Successful Submission: 2024-10-07 19:38:13

Connecting over SSH

Time of First Successful Submission: 2026-06-13 18:26:48

Restarting Challenges

Time of First Successful Submission: 2024-10-07 19:39:52

Getting Help

Time of First Successful Submission: 2024-10-07 19:41:40

Challenge Programs

Time of First Successful Submission: 2024-10-07 19:42:20

The Flag File

Time of First Successful Submission: 2024-10-07 19:43:40

Using Privileged Mode

Time of First Successful Submission: 2024-10-07 19:46:57

Persistent Home Directories - One

Time of First Successful Submission: 2024-10-07 19:48:45

Persistent Home Directories - Two

Time of First Successful Submission: 2024-10-07 19:49:25


GCA CTF

12 / 104 3222 / 48380


Using the Terminal

Time of First Successful Submission: 2026-06-02 08:41:10

Using the VSCode Workspace

Time of First Successful Submission: 2024-10-07 19:35:35

Using the GUI Desktop

Time of First Successful Submission: 2024-10-07 19:36:58

Pasting into the Desktop

Time of First Successful Submission: 2024-10-07 19:38:13

Connecting over SSH

Time of First Successful Submission: 2026-06-13 18:26:48

Restarting Challenges

Time of First Successful Submission: 2024-10-07 19:39:52

Getting Help

Time of First Successful Submission: 2024-10-07 19:41:40

Challenge Programs

Time of First Successful Submission: 2024-10-07 19:42:20

The Flag File

Time of First Successful Submission: 2024-10-07 19:43:40

Using Privileged Mode

Time of First Successful Submission: 2024-10-07 19:46:57

Persistent Home Directories - One

Time of First Successful Submission: 2024-10-07 19:48:45

Persistent Home Directories - Two

Time of First Successful Submission: 2024-10-07 19:49:25