JoeyPark

🐧

Intro to Programming Languages

15 / 234 7372 / 31991


Commands

Time of First Successful Submission: 2025-05-19 22:08:30

Command Arguments

Time of First Successful Submission: 2025-05-19 22:15:31

Command History

Time of First Successful Submission: 2026-01-13 21:28:39

The Root Path

Time of First Successful Submission: 2025-05-19 22:20:42

Absolute Paths

Time of First Successful Submission: 2025-05-19 22:30:53

Changing position

Time of First Successful Submission: 2025-05-19 22:34:59

Changing to an Absolute Path

Time of First Successful Submission: 2025-05-19 22:36:32

Relative Paths

Time of First Successful Submission: 2025-05-19 22:39:28

Cat

Time of First Successful Submission: 2025-05-19 22:49:58

Ls

Time of First Successful Submission: 2025-05-19 23:07:02

Ls All

Time of First Successful Submission: 2025-05-19 23:17:10

Find

Time of First Successful Submission: 2025-05-20 01:00:33

Piping Echo

Time of First Successful Submission: 2025-05-20 16:18:52

Piping Stdout

Time of First Successful Submission: 2025-05-20 16:20:36

Piping Stdin

Time of First Successful Submission: 2025-05-20 16:30:29


Intro to Cybersecurity

101 / 183 2193 / 20040


Path Traversal 1

Time of First Successful Submission: 2025-05-27 22:07:15

Path Traversal 2

Time of First Successful Submission: 2026-02-03 19:12:42

CMDi 1

Time of First Successful Submission: 2025-05-29 13:31:58

CMDi 2

Time of First Successful Submission: 2025-05-29 15:12:06

CMDi 3

Time of First Successful Submission: 2025-05-29 15:24:40

CMDi 4

Time of First Successful Submission: 2025-05-30 17:05:05

CMDi 5

Time of First Successful Submission: 2025-05-30 17:12:11

CMDi 6

Time of First Successful Submission: 2025-05-30 17:14:28

Authentication Bypass 1

Time of First Successful Submission: 2025-05-30 17:15:47

Authentication Bypass 2

Time of First Successful Submission: 2025-05-30 17:16:44

SQLi 1

Time of First Successful Submission: 2025-05-30 17:21:10

SQLi 2

Time of First Successful Submission: 2025-05-30 17:22:43

SQLi 3

Time of First Successful Submission: 2025-05-30 17:24:50

SQLi 4

Time of First Successful Submission: 2025-05-30 17:27:26

SQLi 5

Time of First Successful Submission: 2025-05-30 17:38:54

XSS 1

Time of First Successful Submission: 2025-05-30 17:40:55

XSS 2

Time of First Successful Submission: 2025-05-30 17:45:15

XSS 3

Time of First Successful Submission: 2025-05-30 17:46:39

XSS 4

Time of First Successful Submission: 2025-05-30 17:47:50

XSS 5

Time of First Successful Submission: 2026-02-04 00:56:26

XSS 6

Time of First Successful Submission: 2026-02-04 17:24:40

XSS 7

Time of First Successful Submission: 2026-02-04 17:45:37

CSRF 1

Time of First Successful Submission: 2026-02-05 00:59:13

CSRF 2

Time of First Successful Submission: 2026-02-05 01:20:19

CSRF 3

Time of First Successful Submission: 2026-02-05 01:30:26

CSRF 4

Time of First Successful Submission: 2026-02-05 01:46:28

Connect

Time of First Successful Submission: 2026-03-01 22:56:45

Send

Time of First Successful Submission: 2026-03-01 22:58:19

Shutdown

Time of First Successful Submission: 2026-03-02 00:38:55

Listen

Time of First Successful Submission: 2026-03-02 00:40:47

level1

Time of First Successful Submission: 2025-05-23 01:16:04

level2

Time of First Successful Submission: 2025-05-23 01:16:57

level3

Time of First Successful Submission: 2025-05-23 01:17:50

level4

Time of First Successful Submission: 2025-05-23 01:19:02

level5

Time of First Successful Submission: 2025-05-23 01:47:25

level6

Time of First Successful Submission: 2025-05-23 01:49:06

level7

Time of First Successful Submission: 2025-05-23 01:50:21

level8

Time of First Successful Submission: 2025-05-23 02:09:34

level9

Time of First Successful Submission: 2025-05-23 02:11:29

level10

Time of First Successful Submission: 2025-05-23 02:12:58

level11

Time of First Successful Submission: 2025-05-23 02:18:10

level12

Time of First Successful Submission: 2025-05-23 02:26:31

level13

Time of First Successful Submission: 2025-05-23 02:27:46

level14

Time of First Successful Submission: 2025-05-23 02:29:02

level15

Time of First Successful Submission: 2025-05-23 02:29:58

level16

Time of First Successful Submission: 2025-05-23 02:31:15

level17

Time of First Successful Submission: 2025-05-23 02:44:56

level18

Time of First Successful Submission: 2025-05-23 02:48:21

level19

Time of First Successful Submission: 2025-05-23 15:27:23

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-03 01:08:57

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-03 21:36:52

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-03 21:43:04

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-03 21:47:59

Reading Endianness (C)

Time of First Successful Submission: 2026-03-03 21:50:37

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-03 21:52:34

Version Information (Python)

Time of First Successful Submission: 2026-03-03 21:57:02

Version Information (C)

Time of First Successful Submission: 2026-03-03 22:03:00

Version Information (x86)

Time of First Successful Submission: 2026-03-03 22:05:20

Metadata and Data (Python)

Time of First Successful Submission: 2026-03-03 22:06:08

Metadata and Data (C)

Time of First Successful Submission: 2026-03-03 22:13:54

Metadata and Data (x86)

Time of First Successful Submission: 2026-03-03 22:15:27

Input Restrictions (Python)

Time of First Successful Submission: 2026-03-03 22:28:16

Input Restrictions (C)

Time of First Successful Submission: 2026-03-03 22:44:03

Input Restrictions (x86)

Time of First Successful Submission: 2026-03-03 22:45:09

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-03-03 22:46:24

Behold the cIMG! (C)

Time of First Successful Submission: 2026-03-04 01:31:50

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-03-04 01:34:05

A Basic cIMG (Python)

Time of First Successful Submission: 2026-03-04 01:37:31

A Basic cIMG (C)

Time of First Successful Submission: 2026-03-04 01:38:44

A Basic cIMG (x86)

Time of First Successful Submission: 2026-03-04 01:39:32

Internal State Mini (C)

Time of First Successful Submission: 2026-03-04 02:19:08

Internal State Mini (x86)

Time of First Successful Submission: 2026-03-20 14:24:29

Internal State (C)

Time of First Successful Submission: 2026-03-20 14:31:42

Internal State (x86)

Time of First Successful Submission: 2026-03-20 14:34:00

File Formats: Directives (C)

Time of First Successful Submission: 2026-03-20 14:35:36

File Formats: Directives (x86)

Time of First Successful Submission: 2026-03-20 14:36:57

The Patch Directive

Time of First Successful Submission: 2026-03-20 19:32:23

Optimizing for Space

Time of First Successful Submission: 2026-03-20 19:23:13

Tweaking Images

Time of First Successful Submission: 2026-03-20 19:43:04

Storage and Retrieval

Time of First Successful Submission: 2026-03-20 20:21:25

Extracting Knowledge

Time of First Successful Submission: 2026-03-21 04:11:07

Unsafe Animations

Time of First Successful Submission: 2026-03-22 02:02:53

Animations

Time of First Successful Submission: 2026-03-22 02:14:37

Your First Overflow (easy)

Time of First Successful Submission: 2026-03-26 20:36:37

Your First Overflow (hard)

Time of First Successful Submission: 2026-03-26 20:41:15

Precision (easy)

Time of First Successful Submission: 2026-03-26 20:43:29

Precision (hard)

Time of First Successful Submission: 2026-03-29 23:41:50

Variable Control (easy)

Time of First Successful Submission: 2026-03-30 01:19:23

Variable Control (hard)

Time of First Successful Submission: 2026-04-01 01:56:09

Control Hijack (easy)

Time of First Successful Submission: 2026-04-01 02:00:02

Control Hijack (hard)

Time of First Successful Submission: 2026-04-01 02:05:44

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-04-01 02:33:30

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-04-01 02:36:03

PIEs (easy)

Time of First Successful Submission: 2026-04-02 23:11:37

Basic Shellcode

Time of First Successful Submission: 2026-04-01 20:03:01

NOP Sleds

Time of First Successful Submission: 2026-04-01 21:46:47

NULL-Free Shellcode

Time of First Successful Submission: 2026-04-01 22:53:05

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2026-04-01 23:29:55

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2026-04-02 00:18:59

Hijack to Shellcode (easy)

Time of First Successful Submission: 2026-04-02 00:23:05

Hijack to Shellcode (hard)

Time of First Successful Submission: 2026-04-02 02:16:14


Start Here

11 / 12 7735 / 43364


Using the Terminal

Time of First Successful Submission: 2026-01-13 19:44:21

Using the VSCode Workspace

Time of First Successful Submission: 2025-05-20 20:51:30

Using the GUI Desktop

Time of First Successful Submission: 2025-05-20 20:53:26

Pasting into the Desktop

Time of First Successful Submission: 2025-05-20 20:54:32

Restarting Challenges

Time of First Successful Submission: 2025-05-20 20:55:42

Challenge Programs

Time of First Successful Submission: 2025-05-20 20:58:04

The Flag File

Time of First Successful Submission: 2025-05-20 20:59:00

Using Privileged Mode

Time of First Successful Submission: 2025-05-20 21:07:15

Persistent Home Directories - One

Time of First Successful Submission: 2025-05-20 21:09:51

Persistent Home Directories - Two

Time of First Successful Submission: 2025-05-20 21:10:34


Linux Luminarium

128 / 128 1300 / 32400


Intro to Commands

Time of First Successful Submission: 2025-05-19 22:08:30

Intro to Arguments

Time of First Successful Submission: 2025-05-19 22:15:31

Command History

Time of First Successful Submission: 2026-01-13 21:28:39

The Root

Time of First Successful Submission: 2025-05-19 22:20:42

Program and absolute paths

Time of First Successful Submission: 2025-05-19 22:30:53

Position thy self

Time of First Successful Submission: 2025-05-19 22:34:59

Position elsewhere

Time of First Successful Submission: 2025-05-19 22:36:32

implicit relative paths, from /

Time of First Successful Submission: 2025-05-19 22:39:28

explicit relative paths, from /

Time of First Successful Submission: 2025-05-19 22:40:19

implicit relative path

Time of First Successful Submission: 2025-05-19 22:41:28

home sweet home

Time of First Successful Submission: 2025-05-19 22:45:23

cat: not the pet, but the command!

Time of First Successful Submission: 2025-05-19 22:49:58

catting absolute paths

Time of First Successful Submission: 2025-05-19 22:51:03

more catting practice

Time of First Successful Submission: 2025-05-19 23:04:06

grepping for a needle in a haystack

Time of First Successful Submission: 2025-05-19 23:05:20

comparing files

Time of First Successful Submission: 2026-01-14 18:09:44

listing files

Time of First Successful Submission: 2025-05-19 23:07:02

touching files

Time of First Successful Submission: 2025-05-19 23:13:06

removing files

Time of First Successful Submission: 2025-05-19 23:15:03

moving files

Time of First Successful Submission: 2026-01-14 18:28:03

copying files

Time of First Successful Submission: 2026-01-14 18:27:28

hidden files

Time of First Successful Submission: 2025-05-19 23:17:10

An Epic Filesystem Quest

Time of First Successful Submission: 2025-05-19 23:28:44

making directories

Time of First Successful Submission: 2025-05-20 00:43:57

finding files

Time of First Successful Submission: 2025-05-20 01:00:33

linking files

Time of First Successful Submission: 2025-05-20 01:11:57

Learning From Documentation

Time of First Successful Submission: 2025-05-20 04:59:52

Learning Complex Usage

Time of First Successful Submission: 2025-05-20 05:01:54

Reading Manuals

Time of First Successful Submission: 2025-05-20 05:04:01

Searching Manuals

Time of First Successful Submission: 2025-05-20 05:08:39

Searching For Manuals

Time of First Successful Submission: 2025-05-20 05:12:01

Helpful Programs

Time of First Successful Submission: 2025-05-20 05:14:35

Help for Builtins

Time of First Successful Submission: 2025-05-20 05:16:13

Matching with *

Time of First Successful Submission: 2025-05-20 15:56:42

Matching with ?

Time of First Successful Submission: 2025-05-20 15:58:52

Matching with []

Time of First Successful Submission: 2025-05-20 15:59:50

Matching paths with []

Time of First Successful Submission: 2025-05-20 16:05:12

Multiple globs

Time of First Successful Submission: 2026-01-14 21:02:20

Mixing globs

Time of First Successful Submission: 2025-05-20 16:12:47

Exclusionary globbing

Time of First Successful Submission: 2025-05-20 16:15:27

Tab completion

Time of First Successful Submission: 2026-01-14 21:07:49

Multiple options for tab completion

Time of First Successful Submission: 2026-01-14 21:11:11

Tab completion on commands

Time of First Successful Submission: 2026-01-14 21:16:06

Redirecting output

Time of First Successful Submission: 2025-05-20 16:18:52

Redirecting more output

Time of First Successful Submission: 2025-05-20 16:20:36

Appending output

Time of First Successful Submission: 2025-05-20 16:23:23

Redirecting errors

Time of First Successful Submission: 2025-05-20 16:25:51

Redirecting input

Time of First Successful Submission: 2025-05-20 16:30:29

Grepping stored results

Time of First Successful Submission: 2025-05-20 16:33:26

Grepping live output

Time of First Successful Submission: 2025-05-20 16:34:22

Grepping errors

Time of First Successful Submission: 2025-05-20 16:35:44

Filtering with grep -v

Time of First Successful Submission: 2026-01-14 21:18:55

Filtering with sed

Time of First Successful Submission: 2026-01-14 21:20:06

Duplicating piped data with tee

Time of First Successful Submission: 2025-05-20 16:43:14

Process substitution for input

Time of First Successful Submission: 2026-01-14 21:21:52

Writing to multiple programs

Time of First Successful Submission: 2025-05-20 16:46:38

Split-piping stderr and stdout

Time of First Successful Submission: 2025-05-20 16:48:18

Named pipes

Time of First Successful Submission: 2026-01-14 21:24:58

Printing Variables

Time of First Successful Submission: 2025-05-20 16:50:13

Setting Variables

Time of First Successful Submission: 2025-05-20 16:51:39

Multi-word Variables

Time of First Successful Submission: 2025-05-20 16:52:39

Exporting Variables

Time of First Successful Submission: 2025-05-20 16:55:50

Printing Exported Variables

Time of First Successful Submission: 2025-05-20 16:57:53

Storing Command Output

Time of First Successful Submission: 2025-05-20 16:59:08

Reading Input

Time of First Successful Submission: 2025-05-20 17:00:16

Reading Files

Time of First Successful Submission: 2025-05-20 17:00:55

Translating characters

Time of First Successful Submission: 2026-01-14 21:26:20

Deleting characters

Time of First Successful Submission: 2026-01-14 21:31:29

Deleting newlines

Time of First Successful Submission: 2026-01-14 21:36:15

Extracting the first lines with head

Time of First Successful Submission: 2026-01-14 21:37:27

Extracting specific sections of text

Time of First Successful Submission: 2026-01-14 21:38:31

Sorting data

Time of First Successful Submission: 2026-01-14 21:40:39

Listing Processes

Time of First Successful Submission: 2025-05-20 17:05:31

Killing Processes

Time of First Successful Submission: 2025-05-20 17:07:13

Interrupting Processes

Time of First Successful Submission: 2025-05-20 17:14:33

Killing Misbehaving Processes

Time of First Successful Submission: 2026-01-14 21:43:46

Suspending Processes

Time of First Successful Submission: 2025-05-20 17:15:17

Resuming Processes

Time of First Successful Submission: 2025-05-20 17:16:33

Backgrounding Processes

Time of First Successful Submission: 2025-05-20 17:19:53

Foregrounding Processes

Time of First Successful Submission: 2025-05-20 17:23:15

Starting Backgrounded Processes

Time of First Successful Submission: 2025-05-20 17:23:53

Process Exit Codes

Time of First Successful Submission: 2025-05-20 17:24:45

Becoming root with su

Time of First Successful Submission: 2025-05-20 19:45:58

Other users with su

Time of First Successful Submission: 2025-05-20 19:47:05

Cracking passwords

Time of First Successful Submission: 2025-05-20 19:49:40

Using sudo

Time of First Successful Submission: 2025-05-20 19:50:16

Changing File Ownership

Time of First Successful Submission: 2025-05-20 19:11:50

Groups and Files

Time of First Successful Submission: 2025-05-20 19:13:06

Fun With Groups Names

Time of First Successful Submission: 2025-05-20 19:15:22

Changing Permissions

Time of First Successful Submission: 2025-05-20 19:21:17

Executable Files

Time of First Successful Submission: 2025-05-20 19:25:54

Permission Tweaking Practice

Time of First Successful Submission: 2025-05-20 19:38:47

Permissions Setting Practice

Time of First Successful Submission: 2025-05-20 19:43:34

The SUID Bit

Time of First Successful Submission: 2025-05-20 19:44:44

Chaining with Semicolons

Time of First Successful Submission: 2025-05-20 19:51:26

Building on Success

Time of First Successful Submission: 2026-01-14 21:45:53

Handling Failure

Time of First Successful Submission: 2026-01-14 21:46:55

Your First Shell Script

Time of First Successful Submission: 2025-05-20 19:52:44

Redirecting Script Output

Time of First Successful Submission: 2025-05-20 19:53:24

Executable Shell Scripts

Time of First Successful Submission: 2025-05-20 19:54:27

Understanding Shebangs

Time of First Successful Submission: 2026-01-14 21:51:14

Scripting with Arguments

Time of First Successful Submission: 2026-01-14 21:52:10

Scripting with Conditionals

Time of First Successful Submission: 2026-01-14 21:54:40

Scripting with Default Cases

Time of First Successful Submission: 2026-01-14 21:57:35

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-14 22:00:21

Reading Shell Scripts

Time of First Successful Submission: 2026-01-14 22:01:39

Launching Screen

Time of First Successful Submission: 2026-01-14 22:03:10

Detaching and Attaching

Time of First Successful Submission: 2026-01-14 22:06:28

Finding Sessions

Time of First Successful Submission: 2026-01-14 22:08:29

Switching Windows

Time of First Successful Submission: 2026-01-14 22:09:22

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-14 22:11:33

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-14 22:13:12

The PATH Variable

Time of First Successful Submission: 2025-05-20 19:55:19

Setting PATH

Time of First Successful Submission: 2025-05-20 19:56:11

Finding Commands

Time of First Successful Submission: 2026-01-14 22:15:50

Adding Commands

Time of First Successful Submission: 2025-05-20 20:01:20

Hijacking Commands

Time of First Successful Submission: 2025-05-20 20:11:56

Bashrc Backdoor

Time of First Successful Submission: 2026-01-14 22:16:43

Sniffing Input

Time of First Successful Submission: 2026-01-14 22:25:52

Overshared Directories

Time of First Successful Submission: 2026-01-14 22:41:49

Tricky Linking

Time of First Successful Submission: 2026-01-14 22:44:48

Sniffing Process Arguments

Time of First Successful Submission: 2026-01-14 22:46:57

Snooping on Configurations

Time of First Successful Submission: 2026-01-14 22:49:49

The Fork Bomb

Time of First Successful Submission: 2026-01-14 23:18:54

Disk-Space Doomsday

Time of First Successful Submission: 2026-01-15 02:38:51

rm -rf /

Time of First Successful Submission: 2026-01-15 02:41:38

Life after rm -rf /

Time of First Successful Submission: 2026-01-15 02:45:48

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-01-15 02:49:33


Computing 101

87 / 94 507 / 21536


Your First Register

Time of First Successful Submission: 2026-02-16 22:21:22

Your First Syscall

Time of First Successful Submission: 2026-02-17 05:35:43

Exit Codes

Time of First Successful Submission: 2026-02-17 05:38:08

Building Executables

Time of First Successful Submission: 2026-02-17 05:38:54

Moving Between Registers

Time of First Successful Submission: 2026-02-17 05:39:43

Loading From Memory

Time of First Successful Submission: 2026-02-17 05:48:18

More Loading Practice

Time of First Successful Submission: 2026-02-17 05:48:48

Dereferencing Pointers

Time of First Successful Submission: 2026-02-17 05:49:25

Dereferencing Yourself

Time of First Successful Submission: 2026-02-17 05:52:07

Dereferencing with Offsets

Time of First Successful Submission: 2026-02-17 05:53:18

Stored Addresses

Time of First Successful Submission: 2026-02-17 05:53:51

Double Dereference

Time of First Successful Submission: 2026-02-17 05:57:00

The Stack

Time of First Successful Submission: 2026-02-18 02:38:16

Stack Offsets

Time of First Successful Submission: 2026-02-18 02:39:30

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-18 02:41:14

Popping From the Stack

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

Disassembling Programs

Time of First Successful Submission: 2026-02-18 02:43:34

Tracing Syscalls

Time of First Successful Submission: 2026-02-17 05:45:56

Starting GDB

Time of First Successful Submission: 2026-02-17 05:46:40

Quitting GDB

Time of First Successful Submission: 2026-02-18 02:45:13

Starting Programs in GDB

Time of First Successful Submission: 2026-02-17 05:47:34

Disassembling in GDB

Time of First Successful Submission: 2026-02-18 02:46:41

Stepping Through Instructions

Time of First Successful Submission: 2026-02-18 02:48:11

Reading Register Values

Time of First Successful Submission: 2026-02-18 02:49:30

Popping Stack Values

Time of First Successful Submission: 2026-02-18 02:50:57

Examining Memory

Time of First Successful Submission: 2026-02-18 02:52:35

Examining Stack Pointers

Time of First Successful Submission: 2026-02-18 02:53:24

Cooperative Debugging

Time of First Successful Submission: 2026-02-18 02:55:49

Writing Output

Time of First Successful Submission: 2026-02-17 05:41:45

Chaining Syscalls

Time of First Successful Submission: 2026-02-17 05:42:56

Writing Strings

Time of First Successful Submission: 2026-02-17 05:43:56

Reading Data

Time of First Successful Submission: 2026-02-17 05:44:42

Opening Files

Time of First Successful Submission: 2026-02-18 02:59:05

Hardcoding the Filename

Time of First Successful Submission: 2026-02-18 03:00:23

Comparing Values

Time of First Successful Submission: 2026-02-18 03:09:35

Comparing Characters

Time of First Successful Submission: 2026-02-18 03:10:28

Conditional Control Flow

Time of First Successful Submission: 2026-02-18 03:11:00

Comparing Strings

Time of First Successful Submission: 2026-02-18 03:11:41

Reverse the Password

Time of First Successful Submission: 2026-02-18 03:13:49

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-18 03:19:36

Looping

Time of First Successful Submission: 2026-02-18 03:20:42

Reverse the Calculation

Time of First Successful Submission: 2026-02-18 03:24:27

Reverse the Reverse

Time of First Successful Submission: 2026-02-18 03:26:23

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-18 03:27:21

Loops on Data

Time of First Successful Submission: 2026-02-18 03:29:02

set-register

Time of First Successful Submission: 2026-02-17 00:36:44

set-multiple-registers

Time of First Successful Submission: 2026-02-17 00:37:53

add-to-register

Time of First Successful Submission: 2026-02-17 00:39:05

linear-equation-registers

Time of First Successful Submission: 2026-02-17 00:40:05

integer-division

Time of First Successful Submission: 2026-02-17 00:40:44

modulo-operation

Time of First Successful Submission: 2026-02-17 00:41:18

set-upper-byte

Time of First Successful Submission: 2026-02-17 00:41:47

efficient-modulo

Time of First Successful Submission: 2026-02-17 00:42:22

byte-extraction

Time of First Successful Submission: 2026-02-17 00:43:17

bitwise-and

Time of First Successful Submission: 2026-02-17 00:43:55

check-even

Time of First Successful Submission: 2026-02-17 02:20:52

memory-read

Time of First Successful Submission: 2026-02-17 02:21:21

memory-write

Time of First Successful Submission: 2026-02-17 02:21:54

memory-increment

Time of First Successful Submission: 2026-02-17 02:22:31

byte-access

Time of First Successful Submission: 2026-02-17 04:58:58

memory-size-access

Time of First Successful Submission: 2026-02-17 04:59:23

little-endian-write

Time of First Successful Submission: 2026-02-17 04:59:54

memory-sum

Time of First Successful Submission: 2026-02-17 05:00:17

stack-subtraction

Time of First Successful Submission: 2026-02-17 05:00:43

swap-stack-values

Time of First Successful Submission: 2026-02-17 05:01:10

average-stack-values

Time of First Successful Submission: 2026-02-17 05:01:46

absolute-jump

Time of First Successful Submission: 2026-02-17 05:02:18

relative-jump

Time of First Successful Submission: 2026-02-17 05:02:45

jump-trampoline

Time of First Successful Submission: 2026-02-17 05:03:14

conditional-jump

Time of First Successful Submission: 2026-02-17 05:04:49

indirect-jump

Time of First Successful Submission: 2026-02-17 05:05:31

average-loop

Time of First Successful Submission: 2026-02-17 05:06:13

count-non-zero

Time of First Successful Submission: 2026-02-17 05:07:03

string-lower

Time of First Successful Submission: 2026-02-17 05:07:44

most-common-byte

Time of First Successful Submission: 2026-02-17 05:08:33

Exit

Time of First Successful Submission: 2026-02-18 04:07:23

Socket

Time of First Successful Submission: 2026-02-18 04:08:38

Bind

Time of First Successful Submission: 2026-02-18 04:09:48

Listen

Time of First Successful Submission: 2026-02-18 04:10:27

Accept

Time of First Successful Submission: 2026-02-18 04:10:57

Static Response

Time of First Successful Submission: 2026-02-18 04:11:48

Dynamic Response

Time of First Successful Submission: 2026-02-18 04:13:35

Iterative GET Server

Time of First Successful Submission: 2026-02-18 04:14:16

Concurrent GET Server

Time of First Successful Submission: 2026-02-18 04:15:09

Debugging Programs

Time of First Successful Submission: 2026-02-18 03:32:35

Inspecting Registers

Time of First Successful Submission: 2026-02-18 03:36:37

Examining Memory

Time of First Successful Submission: 2026-02-18 03:53:10


Playing With Programs

65 / 116 3716 / 23385


What's the password?

Time of First Successful Submission: 2025-05-23 15:30:41

... and again!

Time of First Successful Submission: 2025-05-23 15:31:09

Newline Troubles

Time of First Successful Submission: 2025-05-23 15:32:56

Reasoning about files

Time of First Successful Submission: 2025-05-23 15:34:34

Specifying Filenames

Time of First Successful Submission: 2025-05-23 15:37:28

Binary and Hex Encoding

Time of First Successful Submission: 2025-05-23 15:43:31

More Hex

Time of First Successful Submission: 2025-05-23 15:45:40

Decoding Hex

Time of First Successful Submission: 2025-05-23 16:15:13

Decoding Practice

Time of First Successful Submission: 2025-05-23 17:06:54

Encoding Practice

Time of First Successful Submission: 2025-05-23 17:22:44

Hex-encoding ASCII

Time of First Successful Submission: 2025-05-23 17:26:37

Nested Encoding

Time of First Successful Submission: 2025-05-23 17:32:43

Hex-encoding UTF-8

Time of First Successful Submission: 2025-05-23 18:11:44

UTF Mixups

Time of First Successful Submission: 2025-05-24 14:48:44

Modifying Encoded Data

Time of First Successful Submission: 2025-05-24 14:58:12

Decoding Base64

Time of First Successful Submission: 2025-05-24 15:32:04

Encoding Base64

Time of First Successful Submission: 2025-05-24 15:35:47

Dealing with Obfuscation

Time of First Successful Submission: 2025-05-24 23:42:01

Dealing with Obfuscation 2

Time of First Successful Submission: 2025-05-24 22:56:41

Your First HTTP Request

Time of First Successful Submission: 2025-05-25 14:49:55

Reading Flask

Time of First Successful Submission: 2025-05-25 14:52:06

Commented Data

Time of First Successful Submission: 2025-05-27 01:32:21

HTTP Metadata

Time of First Successful Submission: 2025-05-27 01:36:23

HTTP (netcat)

Time of First Successful Submission: 2025-05-27 01:53:29

HTTP Paths (netcat)

Time of First Successful Submission: 2025-05-27 01:56:11

HTTP (curl)

Time of First Successful Submission: 2025-05-27 01:57:13

HTTP (python)

Time of First Successful Submission: 2025-05-27 18:00:05

HTTP Host Header (python)

Time of First Successful Submission: 2025-05-27 18:02:06

HTTP Host Header (curl)

Time of First Successful Submission: 2025-05-27 18:04:25

HTTP Host Header (netcat)

Time of First Successful Submission: 2025-05-27 18:07:36

URL Encoding (netcat)

Time of First Successful Submission: 2025-05-27 18:12:00

HTTP GET Parameters

Time of First Successful Submission: 2025-05-27 18:19:06

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2025-05-27 18:20:58

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2025-05-27 18:23:02

HTTP Forms

Time of First Successful Submission: 2025-05-27 18:24:28

HTTP Forms (curl)

Time of First Successful Submission: 2025-05-27 18:26:37

HTTP Forms (netcat)

Time of First Successful Submission: 2025-05-27 20:32:28

HTTP Forms (python)

Time of First Successful Submission: 2025-05-27 20:34:10

HTTP Forms Without Forms

Time of First Successful Submission: 2025-05-27 20:46:33

Multiple Form Fields (curl)

Time of First Successful Submission: 2025-05-27 20:48:03

Multiple Form Fields (netcat)

Time of First Successful Submission: 2025-05-27 20:51:10

HTTP Redirects (netcat)

Time of First Successful Submission: 2025-05-27 20:52:35

HTTP Redirects (curl)

Time of First Successful Submission: 2025-05-27 20:53:36

HTTP Redirects (python)

Time of First Successful Submission: 2025-05-27 20:56:44

HTTP Cookies (curl)

Time of First Successful Submission: 2025-05-27 21:00:53

HTTP Cookies (netcat)

Time of First Successful Submission: 2025-05-27 21:04:49

HTTP Cookies (python)

Time of First Successful Submission: 2025-05-27 21:06:23

Server State (python)

Time of First Successful Submission: 2025-05-27 21:07:42

Listening Web

Time of First Successful Submission: 2025-05-27 21:10:25

Speaking Redirects

Time of First Successful Submission: 2025-05-27 21:30:20

JavaScript Redirects

Time of First Successful Submission: 2025-05-27 21:41:08

Including JavaScript

Time of First Successful Submission: 2025-05-27 21:46:00

HTTP (javascript)

Time of First Successful Submission: 2025-05-27 21:52:44

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2025-05-27 21:55:50

HTTP Forms (javascript)

Time of First Successful Submission: 2025-05-27 21:58:33

SQL Queries

Time of First Successful Submission: 2025-05-25 13:36:50

Filtering SQL

Time of First Successful Submission: 2025-05-25 14:07:48

Choosing Columns

Time of First Successful Submission: 2025-05-25 14:08:55

Exclusionary Filtering

Time of First Successful Submission: 2025-05-25 14:12:34

Filtering Strings

Time of First Successful Submission: 2025-05-25 14:13:15

Filtering on Expressions

Time of First Successful Submission: 2025-05-25 14:14:55

SELECTing Expressions

Time of First Successful Submission: 2025-05-25 14:28:36

Composite Conditions

Time of First Successful Submission: 2025-05-25 14:29:29

Reaching Your LIMITs

Time of First Successful Submission: 2025-05-25 14:30:23

Querying Metadata

Time of First Successful Submission: 2025-05-25 14:31:23


GCA CTF

11 / 104 7883 / 43641


Using the Terminal

Time of First Successful Submission: 2026-01-13 19:44:21

Using the VSCode Workspace

Time of First Successful Submission: 2025-05-20 20:51:30

Using the GUI Desktop

Time of First Successful Submission: 2025-05-20 20:53:26

Pasting into the Desktop

Time of First Successful Submission: 2025-05-20 20:54:32

Restarting Challenges

Time of First Successful Submission: 2025-05-20 20:55:42

Getting Help

Time of First Successful Submission: 2025-05-20 20:57:26

Challenge Programs

Time of First Successful Submission: 2025-05-20 20:58:04

The Flag File

Time of First Successful Submission: 2025-05-20 20:59:00

Using Privileged Mode

Time of First Successful Submission: 2025-05-20 21:07:15

Persistent Home Directories - One

Time of First Successful Submission: 2025-05-20 21:09:51

Persistent Home Directories - Two

Time of First Successful Submission: 2025-05-20 21:10:34