rsol

Intro to Programming Languages

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Commands

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Command Arguments

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Command History

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The Root Path

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Absolute Paths

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Changing position

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Changing to an Absolute Path

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Relative Paths

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Cat

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Ls

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Ls All

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Find

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Piping Echo

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Piping Stdout

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Piping Stdin

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Intro to Cybersecurity

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Path Traversal 1

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Path Traversal 2

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CMDi 1

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CMDi 2

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CMDi 3

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CMDi 4

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CMDi 5

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CMDi 6

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Authentication Bypass 1

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Authentication Bypass 2

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SQLi 1

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SQLi 2

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SQLi 3

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SQLi 4

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SQLi 5

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XSS 1

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XSS 2

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XSS 3

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XSS 4

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XSS 5

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XSS 6

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XSS 7

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CSRF 1

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CSRF 2

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CSRF 3

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CSRF 4

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CSRF 5

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Connect

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Send

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Shutdown

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Listen

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Scan 1

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Scan 2

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Monitor 1

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Monitor 2

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Sniffing Cookies

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Network Configuration

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Firewall 1

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Firewall 2

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Firewall 3

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Denial of Service 1

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Denial of Service 2

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Ethernet

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IP

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TCP

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TCP Handshake

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UDP

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UDP 2

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UDP Spoofing 1

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ARP

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XOR

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XORing Hex

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XORing ASCII

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XORing ASCII Strings

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One-time Pad

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Many-time Pad

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AES

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AES-ECB-CPA

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AES-ECB-CPA-HTTP

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AES-ECB-CPA-HTTP (base64)

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AES-ECB-CPA-Suffix

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AES-ECB-CPA-Prefix

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AES-ECB-CPA-Prefix-2

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AES-ECB-CPA-Prefix-Miniboss

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AES-ECB-CPA-Prefix-Boss

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AES-CBC

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AES-CBC Tampering

Time of First Successful Submission: 2026-02-17 09:23:34

AES-CBC Resizing

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AES-CBC-POA-Partial-Block

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AES-CBC-POA-Encrypt

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DHKE

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DHKE-to-AES

Time of First Successful Submission: 2026-03-03 22:13:43

RSA 1

Time of First Successful Submission: 2026-03-03 23:44:51

level1

Time of First Successful Submission: 2026-01-27 22:02:39

level2

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level3

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level4

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level5

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level6

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level7

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level8

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level9

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level10

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level11

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level12

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level13

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level14

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level15

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level16

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level17

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level18

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level19

Time of First Successful Submission: 2026-01-28 07:00:08

Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-14 00:50:50

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-14 00:57:09

Using the GUI Desktop

Time of First Successful Submission: 2026-01-14 00:58:57

Pasting into the Desktop

Time of First Successful Submission: 2026-01-14 01:00:49

Restarting Challenges

Time of First Successful Submission: 2026-01-14 01:48:10

Challenge Programs

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

The Flag File

Time of First Successful Submission: 2026-01-14 03:16:03

Using Privileged Mode

Time of First Successful Submission: 2026-01-14 04:45:12

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-14 05:41:02

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-14 06:45:42

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-15 02:10:59

Intro to Arguments

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Command History

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

The Root

Time of First Successful Submission: 2026-01-15 02:33:00

Program and absolute paths

Time of First Successful Submission: 2026-01-15 02:37:10

Position thy self

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Position elsewhere

Time of First Successful Submission: 2026-01-15 02:39:59

implicit relative paths, from /

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explicit relative paths, from /

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implicit relative path

Time of First Successful Submission: 2026-01-15 02:46:39

home sweet home

Time of First Successful Submission: 2026-01-15 02:54:25

cat: not the pet, but the command!

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catting absolute paths

Time of First Successful Submission: 2026-01-15 07:10:25

more catting practice

Time of First Successful Submission: 2026-01-15 07:17:55

grepping for a needle in a haystack

Time of First Successful Submission: 2026-01-15 08:31:33

comparing files

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listing files

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touching files

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removing files

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moving files

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copying files

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hidden files

Time of First Successful Submission: 2026-01-15 08:54:44

An Epic Filesystem Quest

Time of First Successful Submission: 2026-01-15 09:10:11

making directories

Time of First Successful Submission: 2026-01-15 09:12:10

finding files

Time of First Successful Submission: 2026-01-15 09:18:59

linking files

Time of First Successful Submission: 2026-01-15 09:41:20

Learning From Documentation

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

Learning Complex Usage

Time of First Successful Submission: 2026-01-17 07:23:04

Reading Manuals

Time of First Successful Submission: 2026-01-17 07:31:54

Searching Manuals

Time of First Successful Submission: 2026-01-17 07:34:48

Searching For Manuals

Time of First Successful Submission: 2026-01-17 08:21:39

Helpful Programs

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Help for Builtins

Time of First Successful Submission: 2026-01-17 08:32:56

Matching with *

Time of First Successful Submission: 2026-01-20 23:33:02

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

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Exclusionary globbing

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Tab completion

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Multiple options for tab completion

Time of First Successful Submission: 2026-01-21 00:02:10

Tab completion on commands

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Redirecting output

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Redirecting more output

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Appending output

Time of First Successful Submission: 2026-01-21 00:18:13

Redirecting errors

Time of First Successful Submission: 2026-01-21 00:22:19

Redirecting input

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Grepping stored results

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Grepping live output

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Grepping errors

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Filtering with grep -v

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Filtering with sed

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Duplicating piped data with tee

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Process substitution for input

Time of First Successful Submission: 2026-01-21 06:24:11

Writing to multiple programs

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Split-piping stderr and stdout

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Named pipes

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Printing Variables

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Setting Variables

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Multi-word Variables

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Exporting Variables

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Printing Exported Variables

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Storing Command Output

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Reading Input

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Reading Files

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Listing Processes

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Killing Processes

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Interrupting Processes

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Killing Misbehaving Processes

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Suspending Processes

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Resuming Processes

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Backgrounding Processes

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Foregrounding Processes

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Starting Backgrounded Processes

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Process Exit Codes

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Becoming root with su

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Other users with su

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Cracking passwords

Time of First Successful Submission: 2026-01-24 21:00:29

Using sudo

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Changing File Ownership

Time of First Successful Submission: 2026-01-24 07:51:11

Groups and Files

Time of First Successful Submission: 2026-01-24 19:39:29

Fun With Groups Names

Time of First Successful Submission: 2026-01-24 19:40:57

Changing Permissions

Time of First Successful Submission: 2026-01-24 19:51:09

Executable Files

Time of First Successful Submission: 2026-01-24 19:52:54

Permission Tweaking Practice

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Permissions Setting Practice

Time of First Successful Submission: 2026-01-24 20:18:50

The SUID Bit

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Chaining with Semicolons

Time of First Successful Submission: 2026-01-24 21:12:36

Your First Shell Script

Time of First Successful Submission: 2026-01-24 21:42:21

Redirecting Script Output

Time of First Successful Submission: 2026-01-25 02:27:09

Executable Shell Scripts

Time of First Successful Submission: 2026-01-25 02:33:43

The PATH Variable

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Setting PATH

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Adding Commands

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Hijacking Commands

Time of First Successful Submission: 2026-01-25 04:17:15

Playing With Programs

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Your First HTTP Request

Time of First Successful Submission: 2026-03-04 00:31:08

Reading Flask

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Commented Data

Time of First Successful Submission: 2026-03-04 00:45:33

HTTP Metadata

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HTTP (netcat)

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HTTP Paths (netcat)

Time of First Successful Submission: 2026-03-04 00:57:45

HTTP (curl)

Time of First Successful Submission: 2026-03-04 01:01:30

HTTP (python)

Time of First Successful Submission: 2026-03-04 01:04:11

HTTP Host Header (python)

Time of First Successful Submission: 2026-03-09 09:43:44

HTTP Host Header (curl)

Time of First Successful Submission: 2026-03-09 09:49:32

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-03-09 09:51:48

URL Encoding (netcat)

Time of First Successful Submission: 2026-03-09 09:55:01

HTTP GET Parameters

Time of First Successful Submission: 2026-03-09 09:58:20

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-03-09 10:00:00

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-03-09 10:01:46

HTTP Forms

Time of First Successful Submission: 2026-03-09 10:03:16

HTTP Forms (curl)

Time of First Successful Submission: 2026-03-09 10:06:50

HTTP Forms (netcat)

Time of First Successful Submission: 2026-03-09 10:13:32

HTTP Forms (python)

Time of First Successful Submission: 2026-03-09 10:16:04

HTTP Forms Without Forms

Time of First Successful Submission: 2026-03-09 10:20:47

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-03-10 21:29:34

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-03-10 21:38:35

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-03-10 21:43:32

HTTP Redirects (curl)

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HTTP Redirects (python)

Time of First Successful Submission: 2026-03-10 21:48:39

HTTP Cookies (curl)

Time of First Successful Submission: 2026-03-10 21:52:44

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-03-10 21:58:12

HTTP Cookies (python)

Time of First Successful Submission: 2026-03-10 22:00:37

Server State (python)

Time of First Successful Submission: 2026-03-10 22:04:35

Listening Web

Time of First Successful Submission: 2026-03-10 22:08:11

Speaking Redirects

Time of First Successful Submission: 2026-03-10 22:11:59

JavaScript Redirects

Time of First Successful Submission: 2026-03-10 22:17:19

Including JavaScript

Time of First Successful Submission: 2026-03-10 22:21:29

HTTP (javascript)

Time of First Successful Submission: 2026-03-10 22:25:32

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-03-10 23:06:07

HTTP Forms (javascript)

Time of First Successful Submission: 2026-03-10 23:10:53

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-01-14 00:50:50

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-14 00:57:09

Using the GUI Desktop

Time of First Successful Submission: 2026-01-14 00:58:57

Pasting into the Desktop

Time of First Successful Submission: 2026-01-14 01:00:49

Connecting over SSH

Time of First Successful Submission: 2026-01-14 01:45:11

Restarting Challenges

Time of First Successful Submission: 2026-01-14 01:48:10

Getting Help

Time of First Successful Submission: 2026-01-14 01:53:55

Challenge Programs

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

The Flag File

Time of First Successful Submission: 2026-01-14 03:16:03

Using Privileged Mode

Time of First Successful Submission: 2026-01-14 04:45:12

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-14 05:41:02

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-14 06:45:42