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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-04-23 19:58:50

Command Arguments

Time of First Successful Submission: 2026-04-23 19:59:09

Command History

Time of First Successful Submission: 2026-04-23 19:59:27

The Root Path

Time of First Successful Submission: 2026-04-23 20:00:01

Absolute Paths

Time of First Successful Submission: 2026-04-24 07:18:53

Changing position

Time of First Successful Submission: 2026-04-24 07:19:40

Changing to an Absolute Path

Time of First Successful Submission: 2026-04-24 07:21:25

Relative Paths

Time of First Successful Submission: 2026-04-24 07:31:04

Cat

Time of First Successful Submission: 2026-04-24 07:44:36

Ls

Time of First Successful Submission: 2026-04-24 07:47:52

Ls All

Time of First Successful Submission: 2026-04-24 07:50:19

Find

Time of First Successful Submission: 2026-04-24 07:54:15

Piping Echo

Time of First Successful Submission: 2026-04-24 08:14:28

Piping Stdout

Time of First Successful Submission: 2026-04-24 08:15:21

Piping Stdin

Time of First Successful Submission: 2026-04-24 08:21:08


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-04-19 11:29:31

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-19 11:30:58

Using the GUI Desktop

Time of First Successful Submission: 2026-04-19 11:33:09

Pasting into the Desktop

Time of First Successful Submission: 2026-04-19 11:34:12

Restarting Challenges

Time of First Successful Submission: 2026-04-19 11:42:55

Challenge Programs

Time of First Successful Submission: 2026-04-19 11:46:40

The Flag File

Time of First Successful Submission: 2026-04-19 11:47:33

Using Privileged Mode

Time of First Successful Submission: 2026-04-19 11:49:32

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-19 11:50:39

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-19 11:51:03


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-04-23 19:58:50

Intro to Arguments

Time of First Successful Submission: 2026-04-23 19:59:09

Command History

Time of First Successful Submission: 2026-04-23 19:59:27

The Root

Time of First Successful Submission: 2026-04-23 20:00:01

Program and absolute paths

Time of First Successful Submission: 2026-04-24 07:18:53

Position thy self

Time of First Successful Submission: 2026-04-24 07:19:40

Position elsewhere

Time of First Successful Submission: 2026-04-24 07:21:25

implicit relative paths, from /

Time of First Successful Submission: 2026-04-24 07:31:04

explicit relative paths, from /

Time of First Successful Submission: 2026-04-24 07:31:49

implicit relative path

Time of First Successful Submission: 2026-04-24 07:32:17

home sweet home

Time of First Successful Submission: 2026-04-24 07:34:51

cat: not the pet, but the command!

Time of First Successful Submission: 2026-04-24 07:44:36

catting absolute paths

Time of First Successful Submission: 2026-04-24 07:44:54

more catting practice

Time of First Successful Submission: 2026-04-24 07:45:30

grepping for a needle in a haystack

Time of First Successful Submission: 2026-04-24 07:46:04

comparing files

Time of First Successful Submission: 2026-04-24 07:47:22

listing files

Time of First Successful Submission: 2026-04-24 07:47:52

touching files

Time of First Successful Submission: 2026-04-24 07:48:21

removing files

Time of First Successful Submission: 2026-04-24 07:48:51

moving files

Time of First Successful Submission: 2026-04-24 07:49:22

copying files

Time of First Successful Submission: 2026-04-24 07:49:54

hidden files

Time of First Successful Submission: 2026-04-24 07:50:19

An Epic Filesystem Quest

Time of First Successful Submission: 2026-04-24 07:52:30

making directories

Time of First Successful Submission: 2026-04-24 07:53:07

finding files

Time of First Successful Submission: 2026-04-24 07:54:15

linking files

Time of First Successful Submission: 2026-04-24 07:58:41

Learning From Documentation

Time of First Successful Submission: 2026-04-21 14:20:22

Learning Complex Usage

Time of First Successful Submission: 2026-04-21 14:21:36

Reading Manuals

Time of First Successful Submission: 2026-04-21 14:23:17

Searching Manuals

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Searching For Manuals

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Helpful Programs

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Help for Builtins

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Matching with *

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Matching with ?

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Matching with []

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Matching paths with []

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Multiple globs

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Mixing globs

Time of First Successful Submission: 2026-04-24 08:05:31

Exclusionary globbing

Time of First Successful Submission: 2026-04-24 08:07:58

Tab completion

Time of First Successful Submission: 2026-04-24 08:08:50

Multiple options for tab completion

Time of First Successful Submission: 2026-04-24 08:12:34

Tab completion on commands

Time of First Successful Submission: 2026-04-24 08:12:52

Redirecting output

Time of First Successful Submission: 2026-04-24 08:14:28

Redirecting more output

Time of First Successful Submission: 2026-04-24 08:15:21

Appending output

Time of First Successful Submission: 2026-04-24 08:16:23

Redirecting errors

Time of First Successful Submission: 2026-04-24 08:17:47

Redirecting input

Time of First Successful Submission: 2026-04-24 08:21:08

Grepping stored results

Time of First Successful Submission: 2026-04-24 08:21:57

Grepping live output

Time of First Successful Submission: 2026-04-24 08:22:42

Grepping errors

Time of First Successful Submission: 2026-04-24 08:23:58

Filtering with grep -v

Time of First Successful Submission: 2026-04-24 08:24:36

Filtering with sed

Time of First Successful Submission: 2026-04-24 08:27:15

Duplicating piped data with tee

Time of First Successful Submission: 2026-04-24 08:29:30

Process substitution for input

Time of First Successful Submission: 2026-04-24 08:32:44

Writing to multiple programs

Time of First Successful Submission: 2026-04-24 08:36:07

Split-piping stderr and stdout

Time of First Successful Submission: 2026-04-24 09:51:14

Named pipes

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Printing Variables

Time of First Successful Submission: 2026-04-24 10:40:40

Setting Variables

Time of First Successful Submission: 2026-04-24 10:44:17

Multi-word Variables

Time of First Successful Submission: 2026-04-24 10:45:15

Exporting Variables

Time of First Successful Submission: 2026-04-24 10:47:57

Printing Exported Variables

Time of First Successful Submission: 2026-04-24 10:50:29

Storing Command Output

Time of First Successful Submission: 2026-04-24 10:55:39

Reading Input

Time of First Successful Submission: 2026-04-24 10:57:31

Reading Files

Time of First Successful Submission: 2026-04-24 11:00:04

Translating characters

Time of First Successful Submission: 2026-04-24 11:12:14

Deleting characters

Time of First Successful Submission: 2026-04-24 11:12:42

Deleting newlines

Time of First Successful Submission: 2026-04-24 11:13:33

Extracting the first lines with head

Time of First Successful Submission: 2026-04-24 11:29:07

Extracting specific sections of text

Time of First Successful Submission: 2026-04-24 11:31:13

Sorting data

Time of First Successful Submission: 2026-04-24 11:31:59

Listing Processes

Time of First Successful Submission: 2026-04-24 11:40:04

Killing Processes

Time of First Successful Submission: 2026-04-24 11:43:05

Interrupting Processes

Time of First Successful Submission: 2026-04-24 11:43:46

Killing Misbehaving Processes

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Suspending Processes

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Resuming Processes

Time of First Successful Submission: 2026-04-24 11:46:53

Backgrounding Processes

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Foregrounding Processes

Time of First Successful Submission: 2026-04-24 11:57:07

Starting Backgrounded Processes

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Process Exit Codes

Time of First Successful Submission: 2026-04-24 12:33:59

Becoming root with su

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Other users with su

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Cracking passwords

Time of First Successful Submission: 2026-04-24 12:38:54

Using sudo

Time of First Successful Submission: 2026-04-24 12:41:06

Changing File Ownership

Time of First Successful Submission: 2026-04-24 12:52:56

Groups and Files

Time of First Successful Submission: 2026-04-24 12:57:02

Fun With Groups Names

Time of First Successful Submission: 2026-04-24 12:58:19

Changing Permissions

Time of First Successful Submission: 2026-04-24 13:02:17

Executable Files

Time of First Successful Submission: 2026-04-24 13:03:03

Permission Tweaking Practice

Time of First Successful Submission: 2026-04-24 13:06:12

Permissions Setting Practice

Time of First Successful Submission: 2026-04-24 13:12:07

The SUID Bit

Time of First Successful Submission: 2026-04-24 13:14:11

Chaining with Semicolons

Time of First Successful Submission: 2026-04-24 13:16:09

Building on Success

Time of First Successful Submission: 2026-04-24 13:17:27

Handling Failure

Time of First Successful Submission: 2026-04-24 13:18:34

Your First Shell Script

Time of First Successful Submission: 2026-04-24 13:19:57

Redirecting Script Output

Time of First Successful Submission: 2026-04-24 13:23:36

Executable Shell Scripts

Time of First Successful Submission: 2026-04-24 13:26:09

Understanding Shebangs

Time of First Successful Submission: 2026-04-24 13:29:25

Scripting with Arguments

Time of First Successful Submission: 2026-04-24 13:31:18

Scripting with Conditionals

Time of First Successful Submission: 2026-04-24 13:34:06

Scripting with Default Cases

Time of First Successful Submission: 2026-04-24 13:35:19

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-04-24 13:37:58

Reading Shell Scripts

Time of First Successful Submission: 2026-04-24 13:40:06

Launching Screen

Time of First Successful Submission: 2026-04-24 14:50:05

Detaching and Attaching

Time of First Successful Submission: 2026-04-24 14:55:31

Finding Sessions

Time of First Successful Submission: 2026-04-24 14:57:22

Switching Windows

Time of First Successful Submission: 2026-04-24 14:58:57

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-04-24 15:01:07

Switching Windows (tmux)

Time of First Successful Submission: 2026-04-24 15:02:26

The PATH Variable

Time of First Successful Submission: 2026-04-24 15:14:07

Setting PATH

Time of First Successful Submission: 2026-04-24 15:14:52

Finding Commands

Time of First Successful Submission: 2026-04-24 15:16:16

Adding Commands

Time of First Successful Submission: 2026-04-24 15:18:57

Hijacking Commands

Time of First Successful Submission: 2026-04-24 15:27:14

Bashrc Backdoor

Time of First Successful Submission: 2026-04-24 15:29:15

Sniffing Input

Time of First Successful Submission: 2026-04-24 15:32:14

Overshared Directories

Time of First Successful Submission: 2026-04-24 15:35:36

Tricky Linking

Time of First Successful Submission: 2026-04-24 15:39:59

Sniffing Process Arguments

Time of First Successful Submission: 2026-04-24 15:42:37

Snooping on Configurations

Time of First Successful Submission: 2026-04-24 15:44:59

The Fork Bomb

Time of First Successful Submission: 2026-04-24 16:06:19

Disk-Space Doomsday

Time of First Successful Submission: 2026-04-24 16:10:00

rm -rf /

Time of First Successful Submission: 2026-04-24 16:12:45

Life after rm -rf /

Time of First Successful Submission: 2026-04-24 16:14:23

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-04-24 16:17:10


Computing 101

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Your First Register

Time of First Successful Submission: 2026-04-24 19:13:11

Your First Syscall

Time of First Successful Submission: 2026-04-24 19:26:23

Exit Codes

Time of First Successful Submission: 2026-04-24 19:28:14

Building Executables

Time of First Successful Submission: 2026-04-24 19:45:31

Moving Between Registers

Time of First Successful Submission: 2026-04-24 19:48:35

Loading From Memory

Time of First Successful Submission: 2026-04-25 09:48:01

More Loading Practice

Time of First Successful Submission: 2026-04-25 09:48:48

Dereferencing Pointers

Time of First Successful Submission: 2026-04-25 09:57:47

Dereferencing Yourself

Time of First Successful Submission: 2026-04-25 10:00:05

Dereferencing with Offsets

Time of First Successful Submission: 2026-04-25 10:05:42

Stored Addresses

Time of First Successful Submission: 2026-04-25 10:07:24

Double Dereference

Time of First Successful Submission: 2026-04-25 10:09:11

The Stack

Time of First Successful Submission: 2026-04-25 10:33:11

Stack Offsets

Time of First Successful Submission: 2026-04-25 10:34:14

Program Arguments on the Stack

Time of First Successful Submission: 2026-04-25 10:38:44

Popping From the Stack

Time of First Successful Submission: 2026-04-25 10:46:47

Disassembling Programs

Time of First Successful Submission: 2026-04-25 11:43:53

Tracing Syscalls

Time of First Successful Submission: 2026-04-25 11:49:41

Starting GDB

Time of First Successful Submission: 2026-04-25 11:50:21

Quitting GDB

Time of First Successful Submission: 2026-04-25 11:50:48

Starting Programs in GDB

Time of First Successful Submission: 2026-04-25 11:53:20

Disassembling in GDB

Time of First Successful Submission: 2026-04-25 11:54:28

Stepping Through Instructions

Time of First Successful Submission: 2026-04-25 11:56:03

Reading Register Values

Time of First Successful Submission: 2026-04-25 11:57:11

Popping Stack Values

Time of First Successful Submission: 2026-04-25 11:58:03

Examining Memory

Time of First Successful Submission: 2026-04-25 11:59:22

Examining Stack Pointers

Time of First Successful Submission: 2026-04-25 12:02:26

Cooperative Debugging

Time of First Successful Submission: 2026-04-25 12:06:55

Writing Output

Time of First Successful Submission: 2026-04-25 12:59:03

Chaining Syscalls

Time of First Successful Submission: 2026-04-25 13:02:12

Writing Strings

Time of First Successful Submission: 2026-04-25 13:03:04

Reading Data

Time of First Successful Submission: 2026-04-25 13:06:56

Opening Files

Time of First Successful Submission: 2026-04-25 13:18:36

Hardcoding the Filename

Time of First Successful Submission: 2026-04-25 13:24:05

Comparing Values

Time of First Successful Submission: 2026-04-25 16:03:14

Comparing Characters

Time of First Successful Submission: 2026-04-25 16:06:01

Conditional Control Flow

Time of First Successful Submission: 2026-04-27 06:52:09

Comparing Strings

Time of First Successful Submission: 2026-04-27 06:54:04

Reverse the Password

Time of First Successful Submission: 2026-04-27 06:58:09

Conditionals Without Conditionals

Time of First Successful Submission: 2026-04-27 07:44:56

Looping

Time of First Successful Submission: 2026-04-27 11:49:25

Reverse the Calculation

Time of First Successful Submission: 2026-04-27 11:53:17

Reverse the Reverse

Time of First Successful Submission: 2026-04-27 11:54:16

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-04-27 11:57:47

Loops on Data

Time of First Successful Submission: 2026-04-27 12:02:33

set-register

Time of First Successful Submission: 2026-04-27 12:15:01

set-multiple-registers

Time of First Successful Submission: 2026-04-27 12:16:25

add-to-register

Time of First Successful Submission: 2026-04-27 12:17:47

linear-equation-registers

Time of First Successful Submission: 2026-04-27 12:23:03

integer-division

Time of First Successful Submission: 2026-04-27 12:25:49

modulo-operation

Time of First Successful Submission: 2026-04-27 12:30:01

set-upper-byte

Time of First Successful Submission: 2026-04-27 12:31:33

efficient-modulo

Time of First Successful Submission: 2026-04-27 12:46:27

byte-extraction

Time of First Successful Submission: 2026-04-27 12:52:49

bitwise-and

Time of First Successful Submission: 2026-04-27 12:57:57

check-even

Time of First Successful Submission: 2026-04-27 13:23:27

memory-read

Time of First Successful Submission: 2026-04-27 13:29:48

memory-write

Time of First Successful Submission: 2026-04-27 13:30:27

memory-increment

Time of First Successful Submission: 2026-04-27 13:34:39

byte-access

Time of First Successful Submission: 2026-04-27 13:49:58

memory-size-access

Time of First Successful Submission: 2026-04-27 13:51:13

little-endian-write

Time of First Successful Submission: 2026-04-27 14:03:12

memory-sum

Time of First Successful Submission: 2026-04-27 14:15:15

stack-subtraction

Time of First Successful Submission: 2026-04-27 14:19:12

swap-stack-values

Time of First Successful Submission: 2026-04-27 14:20:19

average-stack-values

Time of First Successful Submission: 2026-04-27 15:10:32

absolute-jump

Time of First Successful Submission: 2026-04-27 15:23:46

relative-jump

Time of First Successful Submission: 2026-04-27 17:29:20

jump-trampoline

Time of First Successful Submission: 2026-04-27 17:32:19

conditional-jump

Time of First Successful Submission: 2026-04-27 17:49:42

indirect-jump

Time of First Successful Submission: 2026-04-27 18:06:07

average-loop

Time of First Successful Submission: 2026-04-27 18:57:38

count-non-zero

Time of First Successful Submission: 2026-04-27 19:25:07

string-lower

Time of First Successful Submission: 2026-04-28 08:00:57

most-common-byte

Time of First Successful Submission: 2026-04-28 13:23:39

Exit

Time of First Successful Submission: 2026-04-29 15:01:39

Socket

Time of First Successful Submission: 2026-04-29 15:15:01

Bind

Time of First Successful Submission: 2026-04-29 15:53:41

Listen

Time of First Successful Submission: 2026-04-29 16:11:22

Accept

Time of First Successful Submission: 2026-04-29 16:13:31

Static Response

Time of First Successful Submission: 2026-04-29 17:01:26

Dynamic Response

Time of First Successful Submission: 2026-04-29 17:24:13

Iterative GET Server

Time of First Successful Submission: 2026-04-29 18:34:54

Concurrent GET Server

Time of First Successful Submission: 2026-04-29 18:53:41

Concurrent POST Server

Time of First Successful Submission: 2026-04-30 08:59:54

Web Server

Time of First Successful Submission: 2026-04-30 09:19:55

Debugging Programs

Time of First Successful Submission: 2026-04-30 09:33:46

Inspecting Registers

Time of First Successful Submission: 2026-04-30 09:34:52

Examining Memory

Time of First Successful Submission: 2026-04-30 09:47:29

Setting Breakpoints

Time of First Successful Submission: 2026-04-30 10:06:49

GDB Scripting

Time of First Successful Submission: 2026-04-30 10:36:28

Modifying Data

Time of First Successful Submission: 2026-04-30 10:42:48

Modifying Execution

Time of First Successful Submission: 2026-04-30 10:57:51

Broken Functions

Time of First Successful Submission: 2026-04-30 11:17:33


Playing With Programs

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What's the password?

Time of First Successful Submission: 2026-04-20 16:23:36

... and again!

Time of First Successful Submission: 2026-04-20 16:24:25

Newline Troubles

Time of First Successful Submission: 2026-04-20 16:28:55

Reasoning about files

Time of First Successful Submission: 2026-04-20 16:30:04

Specifying Filenames

Time of First Successful Submission: 2026-04-20 16:33:09

Binary and Hex Encoding

Time of First Successful Submission: 2026-04-20 16:41:04

More Hex

Time of First Successful Submission: 2026-04-20 16:46:18

Decoding Hex

Time of First Successful Submission: 2026-04-20 16:50:49

Decoding Practice

Time of First Successful Submission: 2026-04-20 16:58:42

Encoding Practice

Time of First Successful Submission: 2026-04-20 17:16:51

Hex-encoding ASCII

Time of First Successful Submission: 2026-04-20 17:38:29

Nested Encoding

Time of First Successful Submission: 2026-04-20 17:46:45

Hex-encoding UTF-8

Time of First Successful Submission: 2026-04-20 19:01:55

UTF Mixups

Time of First Successful Submission: 2026-04-20 19:09:14

Modifying Encoded Data

Time of First Successful Submission: 2026-04-20 19:16:07

Decoding Base64

Time of First Successful Submission: 2026-04-20 19:22:41

Encoding Base64

Time of First Successful Submission: 2026-04-20 19:23:57

Dealing with Obfuscation

Time of First Successful Submission: 2026-04-20 19:28:36

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-04-20 19:41:26

Your First HTTP Request

Time of First Successful Submission: 2026-04-21 15:00:46

Reading Flask

Time of First Successful Submission: 2026-04-21 15:02:28

Commented Data

Time of First Successful Submission: 2026-04-21 15:18:12

HTTP Metadata

Time of First Successful Submission: 2026-04-21 15:21:43

HTTP (netcat)

Time of First Successful Submission: 2026-04-21 15:27:06

HTTP Paths (netcat)

Time of First Successful Submission: 2026-04-21 15:27:48

HTTP (curl)

Time of First Successful Submission: 2026-04-21 15:29:09

HTTP (python)

Time of First Successful Submission: 2026-04-21 15:31:43

HTTP Host Header (python)

Time of First Successful Submission: 2026-04-21 15:38:22

HTTP Host Header (curl)

Time of First Successful Submission: 2026-04-21 15:42:05

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-04-21 15:44:00

URL Encoding (netcat)

Time of First Successful Submission: 2026-04-21 15:48:05

HTTP GET Parameters

Time of First Successful Submission: 2026-04-21 15:50:53

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-04-21 15:52:40

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-04-21 15:53:48

HTTP Forms

Time of First Successful Submission: 2026-04-21 15:55:35

HTTP Forms (curl)

Time of First Successful Submission: 2026-04-21 16:04:58

HTTP Forms (netcat)

Time of First Successful Submission: 2026-04-21 16:08:42

HTTP Forms (python)

Time of First Successful Submission: 2026-04-21 16:10:45

HTTP Forms Without Forms

Time of First Successful Submission: 2026-04-21 16:22:16

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-04-21 16:23:53

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-04-21 16:27:14

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-04-21 16:29:43

HTTP Redirects (curl)

Time of First Successful Submission: 2026-04-21 16:30:47

HTTP Redirects (python)

Time of First Successful Submission: 2026-04-21 16:32:12

HTTP Cookies (curl)

Time of First Successful Submission: 2026-04-21 16:50:01

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-04-21 16:52:26

HTTP Cookies (python)

Time of First Successful Submission: 2026-04-21 16:54:12

Server State (python)

Time of First Successful Submission: 2026-04-21 16:59:15

Listening Web

Time of First Successful Submission: 2026-04-21 17:01:37

Speaking Redirects

Time of First Successful Submission: 2026-04-21 17:23:45

JavaScript Redirects

Time of First Successful Submission: 2026-04-21 17:37:31

Including JavaScript

Time of First Successful Submission: 2026-04-21 18:08:06

HTTP (javascript)

Time of First Successful Submission: 2026-04-21 19:34:00

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-04-21 19:38:29

HTTP Forms (javascript)

Time of First Successful Submission: 2026-04-21 19:46:01

cat

Time of First Successful Submission: 2026-04-22 15:38:23

more

Time of First Successful Submission: 2026-04-22 15:39:04

less

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tail

Time of First Successful Submission: 2026-04-22 15:39:40

head

Time of First Successful Submission: 2026-04-22 15:39:58

sort

Time of First Successful Submission: 2026-04-22 15:40:19

vim

Time of First Successful Submission: 2026-04-22 15:41:24

emacs

Time of First Successful Submission: 2026-04-22 15:41:43

nano

Time of First Successful Submission: 2026-04-22 15:42:17

rev

Time of First Successful Submission: 2026-04-22 15:42:51

od

Time of First Successful Submission: 2026-04-22 15:44:27

hd

Time of First Successful Submission: 2026-04-22 15:47:20

xxd

Time of First Successful Submission: 2026-04-22 15:48:10

base32

Time of First Successful Submission: 2026-04-22 15:48:54

base64

Time of First Successful Submission: 2026-04-22 15:49:19

split

Time of First Successful Submission: 2026-04-22 15:50:16

gzip

Time of First Successful Submission: 2026-04-22 15:51:26

bzip2

Time of First Successful Submission: 2026-04-22 15:53:07

zip

Time of First Successful Submission: 2026-04-22 15:56:34

tar

Time of First Successful Submission: 2026-04-22 15:57:30

ar

Time of First Successful Submission: 2026-04-22 16:01:42

cpio

Time of First Successful Submission: 2026-04-22 16:30:41

genisoimage

Time of First Successful Submission: 2026-04-22 16:45:40

env

Time of First Successful Submission: 2026-04-22 16:52:25

find

Time of First Successful Submission: 2026-04-22 16:55:10

make

Time of First Successful Submission: 2026-04-22 17:02:12

nice

Time of First Successful Submission: 2026-04-22 17:02:43

timeout

Time of First Successful Submission: 2026-04-22 17:05:26

stdbuf

Time of First Successful Submission: 2026-04-22 17:07:17

setarch

Time of First Successful Submission: 2026-04-22 17:08:08

watch

Time of First Successful Submission: 2026-04-22 17:09:44

socat

Time of First Successful Submission: 2026-04-22 17:13:25

whiptail

Time of First Successful Submission: 2026-04-22 17:19:38

awk

Time of First Successful Submission: 2026-04-22 17:20:52

sed

Time of First Successful Submission: 2026-04-22 17:25:15

ed

Time of First Successful Submission: 2026-04-22 17:29:41

chown

Time of First Successful Submission: 2026-04-22 17:30:41

chmod

Time of First Successful Submission: 2026-04-22 17:30:58

cp

Time of First Successful Submission: 2026-04-22 17:33:25

mv

Time of First Successful Submission: 2026-04-23 16:26:14

perl

Time of First Successful Submission: 2026-04-23 16:33:45

python

Time of First Successful Submission: 2026-04-23 16:35:22

ruby

Time of First Successful Submission: 2026-04-23 16:38:24

bash

Time of First Successful Submission: 2026-04-23 16:41:39

date

Time of First Successful Submission: 2026-04-23 16:42:35

dmesg

Time of First Successful Submission: 2026-04-23 16:43:06

wc

Time of First Successful Submission: 2026-04-23 16:43:37

gcc

Time of First Successful Submission: 2026-04-23 16:50:10

as

Time of First Successful Submission: 2026-04-23 16:50:48

wget

Time of First Successful Submission: 2026-04-23 17:11:39

ssh-keygen

Time of First Successful Submission: 2026-04-23 17:31:56

SQL Queries

Time of First Successful Submission: 2026-04-23 19:16:39

Filtering SQL

Time of First Successful Submission: 2026-04-23 19:25:29

Choosing Columns

Time of First Successful Submission: 2026-04-23 19:27:09

Exclusionary Filtering

Time of First Successful Submission: 2026-04-23 19:27:55

Filtering Strings

Time of First Successful Submission: 2026-04-23 19:28:46

Filtering on Expressions

Time of First Successful Submission: 2026-04-23 19:33:05

SELECTing Expressions

Time of First Successful Submission: 2026-04-23 19:45:10

Composite Conditions

Time of First Successful Submission: 2026-04-23 19:48:35

Reaching Your LIMITs

Time of First Successful Submission: 2026-04-23 19:50:21

Querying Metadata

Time of First Successful Submission: 2026-04-23 19:52:55


GCA CTF

11 / 104 9371 / 44974


Using the Terminal

Time of First Successful Submission: 2026-04-19 11:29:31

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-19 11:30:58

Using the GUI Desktop

Time of First Successful Submission: 2026-04-19 11:33:09

Pasting into the Desktop

Time of First Successful Submission: 2026-04-19 11:34:12

Connecting over SSH

Time of First Successful Submission: 2026-04-19 11:38:01

Restarting Challenges

Time of First Successful Submission: 2026-04-19 11:42:55

Challenge Programs

Time of First Successful Submission: 2026-04-19 11:46:40

The Flag File

Time of First Successful Submission: 2026-04-19 11:47:33

Using Privileged Mode

Time of First Successful Submission: 2026-04-19 11:49:32

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-19 11:50:39

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-19 11:51:03