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1 / 202 21787 / 22757


Triple Dereference

Time of First Successful Submission: 2025-12-10 21:01:06


Intro to Programming Languages

15 / 234 6593 / 30158


Commands

Time of First Successful Submission: 2024-07-03 10:09:13

Command Arguments

Time of First Successful Submission: 2024-07-03 10:10:13

Command History

Time of First Successful Submission: 2025-12-09 23:14:08

The Root Path

Time of First Successful Submission: 2024-07-02 10:19:44

Absolute Paths

Time of First Successful Submission: 2024-07-02 10:21:20

Changing position

Time of First Successful Submission: 2024-07-02 10:23:48

Changing to an Absolute Path

Time of First Successful Submission: 2024-07-02 10:25:39

Relative Paths

Time of First Successful Submission: 2024-07-02 10:30:11

Cat

Time of First Successful Submission: 2024-07-02 10:45:06

Ls

Time of First Successful Submission: 2024-07-02 10:54:28

Ls All

Time of First Successful Submission: 2024-07-02 11:10:25

Find

Time of First Successful Submission: 2024-07-02 11:30:50

Piping Echo

Time of First Successful Submission: 2024-07-03 10:53:30

Piping Stdout

Time of First Successful Submission: 2024-07-03 10:54:51

Piping Stdin

Time of First Successful Submission: 2024-07-03 11:01:29


Intro to Cybersecurity

22 / 183 9477 / 19235


Path Traversal 1

Time of First Successful Submission: 2026-02-26 12:13:41

Path Traversal 2

Time of First Successful Submission: 2026-02-26 12:20:43

CMDi 1

Time of First Successful Submission: 2026-02-26 12:27:26

CMDi 2

Time of First Successful Submission: 2026-02-26 12:30:32

CMDi 3

Time of First Successful Submission: 2026-02-26 12:34:23

CMDi 4

Time of First Successful Submission: 2026-02-26 12:36:23

CMDi 5

Time of First Successful Submission: 2026-02-26 12:54:11

CMDi 6

Time of First Successful Submission: 2026-02-26 13:06:44

Authentication Bypass 1

Time of First Successful Submission: 2026-02-27 09:21:33

Authentication Bypass 2

Time of First Successful Submission: 2026-02-27 09:23:01

SQLi 1

Time of First Successful Submission: 2026-02-27 09:43:03

SQLi 2

Time of First Successful Submission: 2026-02-27 09:45:54

SQLi 3

Time of First Successful Submission: 2026-02-27 09:51:00

SQLi 4

Time of First Successful Submission: 2026-02-27 10:01:24

SQLi 5

Time of First Successful Submission: 2026-02-27 11:04:10

XSS 1

Time of First Successful Submission: 2026-02-27 11:20:56

XSS 2

Time of First Successful Submission: 2026-02-27 11:24:28

XSS 3

Time of First Successful Submission: 2026-02-27 12:37:07

XSS 4

Time of First Successful Submission: 2026-02-27 12:39:13

XSS 5

Time of First Successful Submission: 2026-02-27 13:06:46

XSS 6

Time of First Successful Submission: 2026-02-27 13:11:10

XSS 7

Time of First Successful Submission: 2026-02-27 13:23:56


Start Here

10 / 12 17857 / 40884


Using the Terminal

Time of First Successful Submission: 2025-12-11 20:22:49

Using the VSCode Workspace

Time of First Successful Submission: 2024-06-03 08:01:18

Using the GUI Desktop

Time of First Successful Submission: 2024-06-03 08:03:22

Pasting into the Desktop

Time of First Successful Submission: 2024-06-03 08:09:42

Restarting Challenges

Time of First Successful Submission: 2025-12-11 20:23:52

Challenge Programs

Time of First Successful Submission: 2025-12-11 20:25:39

The Flag File

Time of First Successful Submission: 2025-12-11 20:26:29

Using Privileged Mode

Time of First Successful Submission: 2025-12-11 20:38:33

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-11 20:29:01

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-11 20:29:30


Linux Luminarium

128 / 128 800 / 30530


Intro to Commands

Time of First Successful Submission: 2024-07-03 10:09:13

Intro to Arguments

Time of First Successful Submission: 2024-07-03 10:10:13

Command History

Time of First Successful Submission: 2025-12-09 23:14:08

The Root

Time of First Successful Submission: 2024-07-02 10:19:44

Program and absolute paths

Time of First Successful Submission: 2024-07-02 10:21:20

Position thy self

Time of First Successful Submission: 2024-07-02 10:23:48

Position elsewhere

Time of First Successful Submission: 2024-07-02 10:25:39

implicit relative paths, from /

Time of First Successful Submission: 2024-07-02 10:30:11

explicit relative paths, from /

Time of First Successful Submission: 2024-07-02 10:32:24

implicit relative path

Time of First Successful Submission: 2024-07-02 10:34:06

home sweet home

Time of First Successful Submission: 2024-07-02 10:37:17

cat: not the pet, but the command!

Time of First Successful Submission: 2024-07-02 10:45:06

catting absolute paths

Time of First Successful Submission: 2024-07-02 10:46:13

more catting practice

Time of First Successful Submission: 2024-07-02 10:47:36

grepping for a needle in a haystack

Time of First Successful Submission: 2024-07-02 10:50:49

comparing files

Time of First Successful Submission: 2025-12-09 23:19:09

listing files

Time of First Successful Submission: 2024-07-02 10:54:28

touching files

Time of First Successful Submission: 2024-07-02 10:56:01

removing files

Time of First Successful Submission: 2024-07-02 10:57:56

moving files

Time of First Successful Submission: 2025-12-09 23:20:30

copying files

Time of First Successful Submission: 2025-12-09 23:21:12

hidden files

Time of First Successful Submission: 2024-07-02 11:10:25

An Epic Filesystem Quest

Time of First Successful Submission: 2024-07-02 11:23:09

making directories

Time of First Successful Submission: 2024-07-02 11:26:03

finding files

Time of First Successful Submission: 2024-07-02 11:30:50

linking files

Time of First Successful Submission: 2025-12-09 23:37:58

Learning From Documentation

Time of First Successful Submission: 2024-07-03 10:11:50

Learning Complex Usage

Time of First Successful Submission: 2024-07-03 10:15:15

Reading Manuals

Time of First Successful Submission: 2024-07-03 10:22:27

Searching Manuals

Time of First Successful Submission: 2024-07-03 10:24:20

Searching For Manuals

Time of First Successful Submission: 2024-07-03 10:29:06

Helpful Programs

Time of First Successful Submission: 2024-07-03 10:30:52

Help for Builtins

Time of First Successful Submission: 2024-07-03 10:32:51

Matching with *

Time of First Successful Submission: 2024-07-03 10:36:17

Matching with ?

Time of First Successful Submission: 2024-07-03 10:38:09

Matching with []

Time of First Successful Submission: 2024-07-03 10:41:08

Matching paths with []

Time of First Successful Submission: 2024-07-03 10:42:34

Multiple globs

Time of First Successful Submission: 2025-12-09 23:39:31

Mixing globs

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

Exclusionary globbing

Time of First Successful Submission: 2024-07-03 10:49:29

Tab completion

Time of First Successful Submission: 2025-12-09 23:40:26

Multiple options for tab completion

Time of First Successful Submission: 2025-12-09 23:41:49

Tab completion on commands

Time of First Successful Submission: 2025-12-09 23:42:20

Redirecting output

Time of First Successful Submission: 2024-07-03 10:53:30

Redirecting more output

Time of First Successful Submission: 2024-07-03 10:54:51

Appending output

Time of First Successful Submission: 2024-07-03 10:56:58

Redirecting errors

Time of First Successful Submission: 2024-07-03 11:00:11

Redirecting input

Time of First Successful Submission: 2024-07-03 11:01:29

Grepping stored results

Time of First Successful Submission: 2024-07-03 11:03:40

Grepping live output

Time of First Successful Submission: 2024-07-03 11:04:52

Grepping errors

Time of First Successful Submission: 2024-07-03 11:06:36

Filtering with grep -v

Time of First Successful Submission: 2025-12-09 23:46:26

Filtering with sed

Time of First Successful Submission: 2025-12-09 23:47:45

Duplicating piped data with tee

Time of First Successful Submission: 2024-07-03 11:36:39

Process substitution for input

Time of First Successful Submission: 2025-12-09 23:49:43

Writing to multiple programs

Time of First Successful Submission: 2025-12-09 23:52:40

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-09 23:55:51

Named pipes

Time of First Successful Submission: 2025-12-10 00:00:35

Printing Variables

Time of First Successful Submission: 2024-07-03 11:53:20

Setting Variables

Time of First Successful Submission: 2024-07-03 11:55:58

Multi-word Variables

Time of First Successful Submission: 2024-07-03 11:57:15

Exporting Variables

Time of First Successful Submission: 2024-07-03 12:00:07

Printing Exported Variables

Time of First Successful Submission: 2024-07-03 11:54:27

Storing Command Output

Time of First Successful Submission: 2025-12-10 00:06:43

Reading Input

Time of First Successful Submission: 2024-07-03 12:03:00

Reading Files

Time of First Successful Submission: 2024-07-03 12:05:15

Translating characters

Time of First Successful Submission: 2025-12-10 09:11:53

Deleting characters

Time of First Successful Submission: 2025-12-10 09:13:04

Deleting newlines

Time of First Successful Submission: 2025-12-10 09:13:36

Extracting the first lines with head

Time of First Successful Submission: 2025-12-10 09:14:24

Extracting specific sections of text

Time of First Successful Submission: 2025-12-10 09:16:37

Sorting data

Time of First Successful Submission: 2025-12-10 09:17:23

Listing Processes

Time of First Successful Submission: 2024-07-04 11:16:38

Killing Processes

Time of First Successful Submission: 2024-07-04 11:19:01

Interrupting Processes

Time of First Successful Submission: 2024-07-04 11:20:20

Killing Misbehaving Processes

Time of First Successful Submission: 2025-12-10 00:16:17

Suspending Processes

Time of First Successful Submission: 2024-07-04 11:22:04

Resuming Processes

Time of First Successful Submission: 2024-07-04 11:23:02

Backgrounding Processes

Time of First Successful Submission: 2024-07-04 11:27:53

Foregrounding Processes

Time of First Successful Submission: 2024-07-04 11:30:34

Starting Backgrounded Processes

Time of First Successful Submission: 2024-07-04 11:32:47

Process Exit Codes

Time of First Successful Submission: 2025-12-10 00:18:39

Becoming root with su

Time of First Successful Submission: 2025-12-10 09:23:58

Other users with su

Time of First Successful Submission: 2025-12-10 09:25:20

Cracking passwords

Time of First Successful Submission: 2025-12-10 09:30:24

Using sudo

Time of First Successful Submission: 2025-12-10 09:31:59

Changing File Ownership

Time of First Successful Submission: 2024-07-04 11:55:02

Groups and Files

Time of First Successful Submission: 2024-07-04 11:58:46

Fun With Groups Names

Time of First Successful Submission: 2024-07-04 12:00:06

Changing Permissions

Time of First Successful Submission: 2024-07-04 12:04:04

Executable Files

Time of First Successful Submission: 2024-07-04 12:09:02

Permission Tweaking Practice

Time of First Successful Submission: 2024-07-04 12:18:09

Permissions Setting Practice

Time of First Successful Submission: 2024-07-04 12:25:24

The SUID Bit

Time of First Successful Submission: 2024-07-04 12:31:26

Chaining with Semicolons

Time of First Successful Submission: 2024-07-04 15:49:25

Building on Success

Time of First Successful Submission: 2025-12-10 00:23:06

Handling Failure

Time of First Successful Submission: 2025-12-10 00:23:39

Your First Shell Script

Time of First Successful Submission: 2024-07-04 15:52:33

Redirecting Script Output

Time of First Successful Submission: 2024-07-04 15:53:59

Executable Shell Scripts

Time of First Successful Submission: 2024-07-04 15:56:44

Understanding Shebangs

Time of First Successful Submission: 2025-12-10 09:45:35

Scripting with Arguments

Time of First Successful Submission: 2025-12-10 09:47:40

Scripting with Conditionals

Time of First Successful Submission: 2025-12-10 09:49:53

Scripting with Default Cases

Time of First Successful Submission: 2025-12-10 09:50:44

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-12-10 09:52:22

Reading Shell Scripts

Time of First Successful Submission: 2025-12-10 09:53:31

Launching Screen

Time of First Successful Submission: 2025-12-10 09:55:40

Detaching and Attaching

Time of First Successful Submission: 2025-12-10 09:58:03

Finding Sessions

Time of First Successful Submission: 2025-12-10 09:59:12

Switching Windows

Time of First Successful Submission: 2025-12-10 10:00:20

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-12-10 10:01:38

Switching Windows (tmux)

Time of First Successful Submission: 2025-12-10 10:02:45

The PATH Variable

Time of First Successful Submission: 2024-07-04 16:03:49

Setting PATH

Time of First Successful Submission: 2024-07-04 16:06:02

Finding Commands

Time of First Successful Submission: 2025-12-10 00:21:39

Adding Commands

Time of First Successful Submission: 2024-07-04 16:14:56

Hijacking Commands

Time of First Successful Submission: 2024-07-04 16:35:22

Bashrc Backdoor

Time of First Successful Submission: 2025-12-10 10:12:36

Sniffing Input

Time of First Successful Submission: 2025-12-10 10:17:58

Overshared Directories

Time of First Successful Submission: 2025-12-10 10:22:54

Tricky Linking

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

Sniffing Process Arguments

Time of First Successful Submission: 2025-12-10 10:31:08

Snooping on Configurations

Time of First Successful Submission: 2025-12-10 10:33:20

The Fork Bomb

Time of First Successful Submission: 2025-12-10 11:10:56

Disk-Space Doomsday

Time of First Successful Submission: 2025-12-10 11:12:58

rm -rf /

Time of First Successful Submission: 2025-12-10 11:17:20

Life after rm -rf /

Time of First Successful Submission: 2025-12-10 11:27:01

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-12-10 11:29:40


Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-10 20:11:35

Your First Syscall

Time of First Successful Submission: 2025-12-10 20:14:23

Exit Codes

Time of First Successful Submission: 2025-12-10 20:17:59

Building Executables

Time of First Successful Submission: 2025-12-10 20:24:28

Moving Between Registers

Time of First Successful Submission: 2025-12-10 20:26:04

Loading From Memory

Time of First Successful Submission: 2025-12-10 20:41:06

More Loading Practice

Time of First Successful Submission: 2025-12-10 20:42:14

Dereferencing Pointers

Time of First Successful Submission: 2025-12-10 20:43:48

Dereferencing Yourself

Time of First Successful Submission: 2025-12-10 20:44:37

Dereferencing with Offsets

Time of First Successful Submission: 2025-12-10 20:45:34

Stored Addresses

Time of First Successful Submission: 2025-12-10 20:57:32

Double Dereference

Time of First Successful Submission: 2025-12-10 20:59:53

The Stack

Time of First Successful Submission: 2026-02-24 12:37:14

Stack Offsets

Time of First Successful Submission: 2026-02-24 12:39:52

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-24 12:41:52

Popping From the Stack

Time of First Successful Submission: 2026-02-24 12:43:18

Disassembling Programs

Time of First Successful Submission: 2026-02-24 14:30:19

Tracing Syscalls

Time of First Successful Submission: 2025-12-10 20:29:03

Starting GDB

Time of First Successful Submission: 2025-12-10 20:30:14

Quitting GDB

Time of First Successful Submission: 2026-02-24 12:44:42

Starting Programs in GDB

Time of First Successful Submission: 2025-12-10 20:31:14

Disassembling in GDB

Time of First Successful Submission: 2026-02-24 12:47:02

Stepping Through Instructions

Time of First Successful Submission: 2026-02-24 12:48:26

Reading Register Values

Time of First Successful Submission: 2026-02-24 12:49:12

Popping Stack Values

Time of First Successful Submission: 2026-02-24 12:50:14

Examining Memory

Time of First Successful Submission: 2026-02-24 12:51:30

Examining Stack Pointers

Time of First Successful Submission: 2026-02-24 12:52:34

Cooperative Debugging

Time of First Successful Submission: 2026-02-24 12:55:13

Writing Output

Time of First Successful Submission: 2025-12-10 21:08:25

Chaining Syscalls

Time of First Successful Submission: 2025-12-10 21:09:53

Writing Strings

Time of First Successful Submission: 2025-12-10 21:10:40

Reading Data

Time of First Successful Submission: 2025-12-10 21:26:11

Opening Files

Time of First Successful Submission: 2026-02-24 13:34:15

Hardcoding the Filename

Time of First Successful Submission: 2026-02-24 13:32:08

Comparing Values

Time of First Successful Submission: 2026-02-24 13:37:17

Comparing Characters

Time of First Successful Submission: 2026-02-24 13:38:56

Conditional Control Flow

Time of First Successful Submission: 2026-02-24 13:41:06

Comparing Strings

Time of First Successful Submission: 2026-02-24 13:42:52

Reverse the Password

Time of First Successful Submission: 2026-02-24 13:46:10

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-24 14:24:59

Looping

Time of First Successful Submission: 2026-02-24 14:28:52

Reverse the Calculation

Time of First Successful Submission: 2026-02-24 14:44:05

Reverse the Reverse

Time of First Successful Submission: 2026-02-24 14:47:31

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-24 14:48:28

Loops on Data

Time of First Successful Submission: 2026-02-24 14:51:41

set-register

Time of First Successful Submission: 2025-12-10 21:39:25

set-multiple-registers

Time of First Successful Submission: 2025-12-10 21:40:43

add-to-register

Time of First Successful Submission: 2025-12-10 21:41:26

linear-equation-registers

Time of First Successful Submission: 2025-12-10 21:42:33

integer-division

Time of First Successful Submission: 2025-12-10 21:45:37

modulo-operation

Time of First Successful Submission: 2025-12-10 21:46:30

set-upper-byte

Time of First Successful Submission: 2025-12-10 21:47:26

efficient-modulo

Time of First Successful Submission: 2025-12-10 21:56:23

byte-extraction

Time of First Successful Submission: 2025-12-11 18:02:51

bitwise-and

Time of First Successful Submission: 2025-12-11 18:03:52

check-even

Time of First Successful Submission: 2025-12-11 18:09:14

memory-read

Time of First Successful Submission: 2025-12-11 18:10:38

memory-write

Time of First Successful Submission: 2025-12-11 18:11:26

memory-increment

Time of First Successful Submission: 2025-12-11 18:13:58

byte-access

Time of First Successful Submission: 2025-12-11 18:14:50

memory-size-access

Time of First Successful Submission: 2025-12-11 18:16:12

little-endian-write

Time of First Successful Submission: 2025-12-11 18:27:29

memory-sum

Time of First Successful Submission: 2025-12-11 18:28:59

stack-subtraction

Time of First Successful Submission: 2025-12-11 18:30:06

swap-stack-values

Time of First Successful Submission: 2025-12-11 18:31:13

average-stack-values

Time of First Successful Submission: 2025-12-11 18:35:19

absolute-jump

Time of First Successful Submission: 2025-12-11 18:39:52

relative-jump

Time of First Successful Submission: 2025-12-11 18:45:50

jump-trampoline

Time of First Successful Submission: 2025-12-11 18:48:12

conditional-jump

Time of First Successful Submission: 2025-12-11 19:11:10

indirect-jump

Time of First Successful Submission: 2025-12-11 20:14:55

average-loop

Time of First Successful Submission: 2025-12-13 19:36:26

count-non-zero

Time of First Successful Submission: 2025-12-13 20:07:36

string-lower

Time of First Successful Submission: 2025-12-13 20:22:24

most-common-byte

Time of First Successful Submission: 2025-12-13 21:38:59

Exit

Time of First Successful Submission: 2026-02-23 14:52:16

Socket

Time of First Successful Submission: 2026-02-23 15:03:37

Bind

Time of First Successful Submission: 2026-02-23 15:24:35

Listen

Time of First Successful Submission: 2026-02-23 15:27:07

Accept

Time of First Successful Submission: 2026-02-23 15:29:11

Static Response

Time of First Successful Submission: 2026-02-23 15:50:26

Dynamic Response

Time of First Successful Submission: 2026-02-24 10:18:39

Iterative GET Server

Time of First Successful Submission: 2026-02-24 10:29:40

Concurrent GET Server

Time of First Successful Submission: 2026-02-24 10:36:18

Concurrent POST Server

Time of First Successful Submission: 2026-02-24 11:23:18

Web Server

Time of First Successful Submission: 2026-02-24 12:21:49

Debugging Programs

Time of First Successful Submission: 2025-12-13 21:43:32

Inspecting Registers

Time of First Successful Submission: 2025-12-13 21:47:52

Examining Memory

Time of First Successful Submission: 2025-12-13 22:34:42

Setting Breakpoints

Time of First Successful Submission: 2025-12-14 17:25:03

GDB Scripting

Time of First Successful Submission: 2025-12-14 17:41:06

Modifying Data

Time of First Successful Submission: 2025-12-14 18:50:59

Modifying Execution

Time of First Successful Submission: 2025-12-14 18:55:43

Broken Functions

Time of First Successful Submission: 2025-12-14 19:45:43


Playing With Programs

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What's the password?

Time of First Successful Submission: 2025-12-17 13:12:29

... and again!

Time of First Successful Submission: 2025-12-17 13:13:23

Newline Troubles

Time of First Successful Submission: 2025-12-17 13:16:18

Reasoning about files

Time of First Successful Submission: 2025-12-17 13:42:17

Specifying Filenames

Time of First Successful Submission: 2025-12-17 13:44:06

Binary and Hex Encoding

Time of First Successful Submission: 2025-12-17 13:47:46

More Hex

Time of First Successful Submission: 2025-12-17 13:49:01

Decoding Hex

Time of First Successful Submission: 2025-12-17 19:24:49

Decoding Practice

Time of First Successful Submission: 2025-12-17 19:28:12

Encoding Practice

Time of First Successful Submission: 2025-12-17 19:35:49

Hex-encoding ASCII

Time of First Successful Submission: 2025-12-17 19:39:40

Nested Encoding

Time of First Successful Submission: 2025-12-17 19:42:17

Hex-encoding UTF-8

Time of First Successful Submission: 2025-12-17 19:52:48

UTF Mixups

Time of First Successful Submission: 2025-12-17 19:56:09

Modifying Encoded Data

Time of First Successful Submission: 2025-12-17 20:01:29

Decoding Base64

Time of First Successful Submission: 2025-12-17 20:05:12

Encoding Base64

Time of First Successful Submission: 2025-12-17 20:07:41

Dealing with Obfuscation

Time of First Successful Submission: 2025-12-17 20:10:43

Dealing with Obfuscation 2

Time of First Successful Submission: 2025-12-17 20:22:15

Your First HTTP Request

Time of First Successful Submission: 2026-02-25 11:57:21

Reading Flask

Time of First Successful Submission: 2026-02-25 12:05:15

Commented Data

Time of First Successful Submission: 2026-02-25 12:07:28

HTTP Metadata

Time of First Successful Submission: 2026-02-25 12:11:19

HTTP (netcat)

Time of First Successful Submission: 2026-02-25 12:13:03

HTTP Paths (netcat)

Time of First Successful Submission: 2026-02-25 12:17:06

HTTP (curl)

Time of First Successful Submission: 2026-02-25 12:19:22

HTTP (python)

Time of First Successful Submission: 2026-02-25 12:21:12

HTTP Host Header (python)

Time of First Successful Submission: 2026-02-25 12:25:30

HTTP Host Header (curl)

Time of First Successful Submission: 2026-02-25 12:27:13

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-02-25 12:28:40

URL Encoding (netcat)

Time of First Successful Submission: 2026-02-25 12:30:45

HTTP GET Parameters

Time of First Successful Submission: 2026-02-25 12:33:15

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-02-25 12:38:01

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-02-25 12:39:45

HTTP Forms

Time of First Successful Submission: 2026-02-25 12:42:53

HTTP Forms (curl)

Time of First Successful Submission: 2026-02-25 12:46:56

HTTP Forms (netcat)

Time of First Successful Submission: 2026-02-25 21:27:18

HTTP Forms (python)

Time of First Successful Submission: 2026-02-25 21:31:47

HTTP Forms Without Forms

Time of First Successful Submission: 2026-02-25 21:50:09

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-02-25 21:52:52

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-02-25 21:59:48

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-02-25 22:03:03

HTTP Redirects (curl)

Time of First Successful Submission: 2026-02-25 22:04:06

HTTP Redirects (python)

Time of First Successful Submission: 2026-02-25 22:05:05

HTTP Cookies (curl)

Time of First Successful Submission: 2026-02-25 22:08:17

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-02-25 22:09:32

HTTP Cookies (python)

Time of First Successful Submission: 2026-02-25 22:23:48

Server State (python)

Time of First Successful Submission: 2026-02-25 22:25:16

Listening Web

Time of First Successful Submission: 2026-02-25 22:31:04

Speaking Redirects

Time of First Successful Submission: 2026-02-26 09:39:56

JavaScript Redirects

Time of First Successful Submission: 2026-02-26 09:59:10

Including JavaScript

Time of First Successful Submission: 2026-02-26 10:14:15

HTTP (javascript)

Time of First Successful Submission: 2026-02-26 10:18:48

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-02-26 10:21:48

HTTP Forms (javascript)

Time of First Successful Submission: 2026-02-26 10:28:05

cat

Time of First Successful Submission: 2024-07-06 12:28:05

more

Time of First Successful Submission: 2024-07-06 12:33:11

less

Time of First Successful Submission: 2024-07-06 12:35:46

tail

Time of First Successful Submission: 2024-07-06 13:43:26

head

Time of First Successful Submission: 2024-07-06 13:44:11

sort

Time of First Successful Submission: 2024-07-06 13:45:33

vim

Time of First Successful Submission: 2024-07-06 13:46:50

emacs

Time of First Successful Submission: 2024-07-09 10:47:24

nano

Time of First Successful Submission: 2024-07-09 10:48:52

rev

Time of First Successful Submission: 2024-07-06 14:17:37

od

Time of First Successful Submission: 2024-07-06 14:25:57

hd

Time of First Successful Submission: 2024-07-06 14:27:50

xxd

Time of First Successful Submission: 2024-07-09 10:53:57

base32

Time of First Successful Submission: 2024-07-09 11:29:59

base64

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

split

Time of First Successful Submission: 2024-07-09 11:40:19

gzip

Time of First Successful Submission: 2024-07-09 11:45:15

bzip2

Time of First Successful Submission: 2024-07-09 11:59:30

zip

Time of First Successful Submission: 2024-07-09 12:09:49

tar

Time of First Successful Submission: 2024-07-09 12:23:46

ar

Time of First Successful Submission: 2024-07-10 09:09:55

cpio

Time of First Successful Submission: 2024-07-10 09:21:39

genisoimage

Time of First Successful Submission: 2026-02-24 18:01:17

env

Time of First Successful Submission: 2025-12-15 09:30:52

find

Time of First Successful Submission: 2025-12-17 20:28:18

make

Time of First Successful Submission: 2025-12-17 20:35:19

nice

Time of First Successful Submission: 2025-12-17 20:36:44

timeout

Time of First Successful Submission: 2025-12-17 20:37:17

stdbuf

Time of First Successful Submission: 2025-12-17 20:37:57

setarch

Time of First Successful Submission: 2025-12-17 20:38:44

watch

Time of First Successful Submission: 2025-12-17 20:39:33

socat

Time of First Successful Submission: 2025-12-17 20:44:21

whiptail

Time of First Successful Submission: 2025-12-17 20:49:02

awk

Time of First Successful Submission: 2025-12-17 20:51:12

sed

Time of First Successful Submission: 2025-12-17 20:51:54

ed

Time of First Successful Submission: 2025-12-17 20:52:29

chown

Time of First Successful Submission: 2025-12-17 20:53:37

chmod

Time of First Successful Submission: 2025-12-17 20:54:01

cp

Time of First Successful Submission: 2025-12-17 20:54:28

mv

Time of First Successful Submission: 2026-02-24 18:16:52

perl

Time of First Successful Submission: 2025-12-17 21:03:29

python

Time of First Successful Submission: 2025-12-17 21:04:51

ruby

Time of First Successful Submission: 2025-12-17 21:06:23

bash

Time of First Successful Submission: 2025-12-17 21:15:07

date

Time of First Successful Submission: 2025-12-17 21:15:54

dmesg

Time of First Successful Submission: 2025-12-17 21:16:35

wc

Time of First Successful Submission: 2025-12-17 22:02:37

gcc

Time of First Successful Submission: 2026-02-24 16:49:22

as

Time of First Successful Submission: 2025-12-17 21:40:47

wget

Time of First Successful Submission: 2026-02-24 17:23:45

ssh-keygen

Time of First Successful Submission: 2026-02-24 18:24:25

SQL Queries

Time of First Successful Submission: 2026-02-24 14:55:32

Filtering SQL

Time of First Successful Submission: 2026-02-24 14:59:43

Choosing Columns

Time of First Successful Submission: 2026-02-24 15:01:28

Exclusionary Filtering

Time of First Successful Submission: 2026-02-24 15:02:34

Filtering Strings

Time of First Successful Submission: 2026-02-24 15:03:28

Filtering on Expressions

Time of First Successful Submission: 2026-02-24 15:07:13

SELECTing Expressions

Time of First Successful Submission: 2026-02-24 15:15:11

Composite Conditions

Time of First Successful Submission: 2026-02-24 15:16:35

Reaching Your LIMITs

Time of First Successful Submission: 2026-02-24 15:18:13

Querying Metadata

Time of First Successful Submission: 2026-02-24 16:39:56


GCA CTF

10 / 102 17970 / 41153


Using the Terminal

Time of First Successful Submission: 2025-12-11 20:22:49

Using the VSCode Workspace

Time of First Successful Submission: 2024-06-03 08:01:18

Using the GUI Desktop

Time of First Successful Submission: 2024-06-03 08:03:22

Pasting into the Desktop

Time of First Successful Submission: 2024-06-03 08:09:42

Restarting Challenges

Time of First Successful Submission: 2025-12-11 20:23:52

Challenge Programs

Time of First Successful Submission: 2025-12-11 20:25:39

The Flag File

Time of First Successful Submission: 2025-12-11 20:26:29

Using Privileged Mode

Time of First Successful Submission: 2025-12-11 20:38:33

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-11 20:29:01

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-11 20:29:30