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1 / 202 22259 / 22791


Triple Dereference

Time of First Successful Submission: 2026-01-15 11:23:04


Intro to Programming Languages

15 / 234 7279 / 31936


Commands

Time of First Successful Submission: 2026-01-10 12:18:17

Command Arguments

Time of First Successful Submission: 2026-01-10 12:21:56

Command History

Time of First Successful Submission: 2026-01-10 12:22:22

The Root Path

Time of First Successful Submission: 2026-01-10 12:24:00

Absolute Paths

Time of First Successful Submission: 2026-01-10 12:24:48

Changing position

Time of First Successful Submission: 2026-01-10 12:26:57

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-10 12:29:22

Relative Paths

Time of First Successful Submission: 2026-01-10 12:38:36

Cat

Time of First Successful Submission: 2026-01-10 12:48:19

Ls

Time of First Successful Submission: 2026-01-10 13:03:59

Ls All

Time of First Successful Submission: 2026-01-10 13:11:32

Find

Time of First Successful Submission: 2026-01-10 13:41:52

Piping Echo

Time of First Successful Submission: 2026-01-11 03:17:46

Piping Stdout

Time of First Successful Submission: 2026-01-11 03:29:02

Piping Stdin

Time of First Successful Submission: 2026-01-11 04:11:08


Intro to Cybersecurity

78 / 183 3519 / 20011


Path Traversal 1

Time of First Successful Submission: 2026-01-27 08:26:35

Path Traversal 2

Time of First Successful Submission: 2026-01-27 08:50:43

CMDi 1

Time of First Successful Submission: 2026-01-27 09:14:18

CMDi 2

Time of First Successful Submission: 2026-01-27 09:30:49

CMDi 3

Time of First Successful Submission: 2026-01-27 09:44:41

CMDi 4

Time of First Successful Submission: 2026-01-27 09:49:34

CMDi 5

Time of First Successful Submission: 2026-01-27 09:57:52

CMDi 6

Time of First Successful Submission: 2026-01-27 10:42:59

Authentication Bypass 1

Time of First Successful Submission: 2026-01-27 11:04:09

Authentication Bypass 2

Time of First Successful Submission: 2026-01-27 11:14:05

SQLi 1

Time of First Successful Submission: 2026-01-27 11:44:27

SQLi 2

Time of First Successful Submission: 2026-01-27 12:06:13

SQLi 3

Time of First Successful Submission: 2026-01-27 12:49:51

SQLi 4

Time of First Successful Submission: 2026-01-28 07:10:14

SQLi 5

Time of First Successful Submission: 2026-01-28 09:33:37

XSS 1

Time of First Successful Submission: 2026-01-28 09:42:27

XSS 2

Time of First Successful Submission: 2026-01-28 09:59:25

XSS 3

Time of First Successful Submission: 2026-01-28 10:12:14

XSS 4

Time of First Successful Submission: 2026-01-28 10:46:16

XSS 5

Time of First Successful Submission: 2026-01-29 03:13:22

XSS 6

Time of First Successful Submission: 2026-01-29 03:23:47

XSS 7

Time of First Successful Submission: 2026-01-29 04:08:25

CSRF 1

Time of First Successful Submission: 2026-01-29 06:06:40

CSRF 2

Time of First Successful Submission: 2026-01-29 08:59:27

CSRF 3

Time of First Successful Submission: 2026-01-29 09:31:20

CSRF 4

Time of First Successful Submission: 2026-01-29 09:52:13

CSRF 5

Time of First Successful Submission: 2026-01-29 10:42:02

Connect

Time of First Successful Submission: 2026-01-30 03:39:49

Send

Time of First Successful Submission: 2026-01-30 03:43:14

Shutdown

Time of First Successful Submission: 2026-01-30 04:18:01

Listen

Time of First Successful Submission: 2026-01-30 04:25:15

Scan 1

Time of First Successful Submission: 2026-01-30 04:32:13

Scan 2

Time of First Successful Submission: 2026-01-30 05:29:36

Monitor 1

Time of First Successful Submission: 2026-01-30 06:49:39

Monitor 2

Time of First Successful Submission: 2026-01-30 07:12:23

Sniffing Cookies

Time of First Successful Submission: 2026-01-30 07:39:21

Network Configuration

Time of First Successful Submission: 2026-01-30 07:58:45

Firewall 1

Time of First Successful Submission: 2026-01-31 02:36:06

Firewall 2

Time of First Successful Submission: 2026-01-31 02:37:00

Firewall 3

Time of First Successful Submission: 2026-01-31 02:39:11

Denial of Service 1

Time of First Successful Submission: 2026-01-31 03:43:11

Denial of Service 2

Time of First Successful Submission: 2026-02-01 21:38:00

Denial of Service 3

Time of First Successful Submission: 2026-02-02 00:17:46

Ethernet

Time of First Successful Submission: 2026-02-02 01:26:43

IP

Time of First Successful Submission: 2026-02-02 01:29:34

TCP

Time of First Successful Submission: 2026-02-02 01:32:42

TCP Handshake

Time of First Successful Submission: 2026-02-02 01:45:38

UDP

Time of First Successful Submission: 2026-02-02 01:56:59

UDP 2

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

UDP Spoofing 1

Time of First Successful Submission: 2026-02-02 02:30:15

UDP Spoofing 2

Time of First Successful Submission: 2026-02-02 03:03:54

UDP Spoofing 3

Time of First Successful Submission: 2026-02-02 04:12:10

UDP Spoofing 4

Time of First Successful Submission: 2026-02-04 07:52:51

ARP

Time of First Successful Submission: 2026-02-04 08:12:05

Intercept

Time of First Successful Submission: 2026-02-04 08:53:22

Man-in-the-Middle

Time of First Successful Submission: 2026-02-05 07:59:03

XOR

Time of First Successful Submission: 2026-02-07 10:16:25

XORing Hex

Time of First Successful Submission: 2026-02-07 10:25:59

XORing ASCII

Time of First Successful Submission: 2026-02-07 11:00:03

XORing ASCII Strings

Time of First Successful Submission: 2026-02-07 11:22:37

One-time Pad

Time of First Successful Submission: 2026-02-07 11:38:41

One-time Pad Tampering

Time of First Successful Submission: 2026-02-08 04:58:17

Many-time Pad

Time of First Successful Submission: 2026-02-08 05:09:45

AES

Time of First Successful Submission: 2026-02-08 05:49:25

AES-ECB-CPA

Time of First Successful Submission: 2026-02-09 08:56:39

AES-ECB-CPA-HTTP

Time of First Successful Submission: 2026-02-10 11:06:48

AES-ECB-CPA-HTTP (base64)

Time of First Successful Submission: 2026-02-10 11:21:54

AES-ECB-CPA-Suffix

Time of First Successful Submission: 2026-02-13 08:08:40

AES-ECB-CPA-Prefix

Time of First Successful Submission: 2026-02-13 12:36:11

AES-ECB-CPA-Prefix-2

Time of First Successful Submission: 2026-02-15 15:07:01

AES-ECB-CPA-Prefix-Miniboss

Time of First Successful Submission: 2026-02-17 12:04:13

AES-ECB-CPA-Prefix-Boss

Time of First Successful Submission: 2026-03-04 15:11:30

AES-CBC

Time of First Successful Submission: 2026-03-10 06:50:42

AES-CBC Tampering

Time of First Successful Submission: 2026-03-10 08:36:14

AES-CBC Resizing

Time of First Successful Submission: 2026-03-25 11:52:28

AES-CBC-POA-Partial-Block

Time of First Successful Submission: 2026-03-28 12:27:10

AES-CBC-POA-Full-Block

Time of First Successful Submission: 2026-04-01 04:29:22

AES-CBC-POA-Multi-Block

Time of First Successful Submission: 2026-04-01 04:43:58


Start Here

12 / 12 698 / 43261


Using the Terminal

Time of First Successful Submission: 2026-01-10 04:59:17

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-10 10:35:07

Using the GUI Desktop

Time of First Successful Submission: 2026-01-10 10:38:09

Pasting into the Desktop

Time of First Successful Submission: 2026-01-10 10:41:29

Restarting Challenges

Time of First Successful Submission: 2026-01-10 11:02:38

Challenge Programs

Time of First Successful Submission: 2026-01-10 11:28:12

The Flag File

Time of First Successful Submission: 2026-01-10 11:31:55

Using Privileged Mode

Time of First Successful Submission: 2026-01-10 11:38:42

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-10 11:43:32

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-10 11:44:11


Linux Luminarium

128 / 128 1262 / 32345


Intro to Commands

Time of First Successful Submission: 2026-01-10 12:18:17

Intro to Arguments

Time of First Successful Submission: 2026-01-10 12:21:56

Command History

Time of First Successful Submission: 2026-01-10 12:22:22

The Root

Time of First Successful Submission: 2026-01-10 12:24:00

Program and absolute paths

Time of First Successful Submission: 2026-01-10 12:24:48

Position thy self

Time of First Successful Submission: 2026-01-10 12:26:57

Position elsewhere

Time of First Successful Submission: 2026-01-10 12:29:22

implicit relative paths, from /

Time of First Successful Submission: 2026-01-10 12:38:36

explicit relative paths, from /

Time of First Successful Submission: 2026-01-10 12:40:35

implicit relative path

Time of First Successful Submission: 2026-01-10 12:42:12

home sweet home

Time of First Successful Submission: 2026-01-10 12:46:51

cat: not the pet, but the command!

Time of First Successful Submission: 2026-01-10 12:48:19

catting absolute paths

Time of First Successful Submission: 2026-01-10 12:49:01

more catting practice

Time of First Successful Submission: 2026-01-10 12:56:53

grepping for a needle in a haystack

Time of First Successful Submission: 2026-01-10 12:58:20

comparing files

Time of First Successful Submission: 2026-01-10 13:02:38

listing files

Time of First Successful Submission: 2026-01-10 13:03:59

touching files

Time of First Successful Submission: 2026-01-10 13:06:28

removing files

Time of First Successful Submission: 2026-01-10 13:07:57

moving files

Time of First Successful Submission: 2026-01-10 13:09:33

copying files

Time of First Successful Submission: 2026-01-10 13:10:36

hidden files

Time of First Successful Submission: 2026-01-10 13:11:32

An Epic Filesystem Quest

Time of First Successful Submission: 2026-01-10 13:29:54

making directories

Time of First Successful Submission: 2026-01-10 13:31:14

finding files

Time of First Successful Submission: 2026-01-10 13:41:52

linking files

Time of First Successful Submission: 2026-01-10 14:01:29

Learning From Documentation

Time of First Successful Submission: 2026-01-10 14:14:26

Learning Complex Usage

Time of First Successful Submission: 2026-01-10 14:20:48

Reading Manuals

Time of First Successful Submission: 2026-01-10 14:41:35

Searching Manuals

Time of First Successful Submission: 2026-01-10 14:43:59

Searching For Manuals

Time of First Successful Submission: 2026-01-10 15:02:09

Helpful Programs

Time of First Successful Submission: 2026-01-10 15:09:06

Help for Builtins

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

Matching with *

Time of First Successful Submission: 2026-01-10 16:02:34

Matching with ?

Time of First Successful Submission: 2026-01-10 16:05:10

Matching with []

Time of First Successful Submission: 2026-01-10 16:14:53

Matching paths with []

Time of First Successful Submission: 2026-01-10 16:17:03

Multiple globs

Time of First Successful Submission: 2026-01-10 16:23:57

Mixing globs

Time of First Successful Submission: 2026-01-10 16:43:13

Exclusionary globbing

Time of First Successful Submission: 2026-01-10 16:45:30

Tab completion

Time of First Successful Submission: 2026-01-10 16:49:00

Multiple options for tab completion

Time of First Successful Submission: 2026-01-10 16:51:20

Tab completion on commands

Time of First Successful Submission: 2026-01-10 16:52:54

Redirecting output

Time of First Successful Submission: 2026-01-11 03:17:46

Redirecting more output

Time of First Successful Submission: 2026-01-11 03:29:02

Appending output

Time of First Successful Submission: 2026-01-11 03:34:52

Redirecting errors

Time of First Successful Submission: 2026-01-11 04:02:34

Redirecting input

Time of First Successful Submission: 2026-01-11 04:11:08

Grepping stored results

Time of First Successful Submission: 2026-01-11 04:15:48

Grepping live output

Time of First Successful Submission: 2026-01-11 04:26:02

Grepping errors

Time of First Successful Submission: 2026-01-11 04:39:06

Filtering with grep -v

Time of First Successful Submission: 2026-01-11 04:40:27

Filtering with sed

Time of First Successful Submission: 2026-01-11 04:42:38

Duplicating piped data with tee

Time of First Successful Submission: 2026-01-11 04:49:56

Process substitution for input

Time of First Successful Submission: 2026-01-11 04:55:13

Writing to multiple programs

Time of First Successful Submission: 2026-01-11 05:14:08

Split-piping stderr and stdout

Time of First Successful Submission: 2026-01-11 05:46:20

Named pipes

Time of First Successful Submission: 2026-01-11 05:53:51

Printing Variables

Time of First Successful Submission: 2026-01-11 08:10:08

Setting Variables

Time of First Successful Submission: 2026-01-11 08:12:30

Multi-word Variables

Time of First Successful Submission: 2026-01-11 08:14:15

Exporting Variables

Time of First Successful Submission: 2026-01-11 08:19:07

Printing Exported Variables

Time of First Successful Submission: 2026-01-11 08:21:00

Storing Command Output

Time of First Successful Submission: 2026-01-11 08:27:36

Reading Input

Time of First Successful Submission: 2026-01-11 08:42:40

Reading Files

Time of First Successful Submission: 2026-01-11 08:48:09

Translating characters

Time of First Successful Submission: 2026-01-11 09:11:22

Deleting characters

Time of First Successful Submission: 2026-01-11 09:12:29

Deleting newlines

Time of First Successful Submission: 2026-01-11 09:22:04

Extracting the first lines with head

Time of First Successful Submission: 2026-01-11 09:24:33

Extracting specific sections of text

Time of First Successful Submission: 2026-01-11 10:25:29

Sorting data

Time of First Successful Submission: 2026-01-11 10:29:58

Listing Processes

Time of First Successful Submission: 2026-01-11 10:59:19

Killing Processes

Time of First Successful Submission: 2026-01-11 11:16:45

Interrupting Processes

Time of First Successful Submission: 2026-01-11 11:28:30

Killing Misbehaving Processes

Time of First Successful Submission: 2026-01-11 11:40:42

Suspending Processes

Time of First Successful Submission: 2026-01-11 11:45:53

Resuming Processes

Time of First Successful Submission: 2026-01-11 11:46:56

Backgrounding Processes

Time of First Successful Submission: 2026-01-11 11:54:36

Foregrounding Processes

Time of First Successful Submission: 2026-01-11 12:07:15

Starting Backgrounded Processes

Time of First Successful Submission: 2026-01-11 12:10:32

Process Exit Codes

Time of First Successful Submission: 2026-01-11 12:15:58

Becoming root with su

Time of First Successful Submission: 2026-01-11 12:47:36

Other users with su

Time of First Successful Submission: 2026-01-11 12:48:42

Cracking passwords

Time of First Successful Submission: 2026-01-11 12:58:27

Using sudo

Time of First Successful Submission: 2026-01-11 13:03:20

Changing File Ownership

Time of First Successful Submission: 2026-01-12 10:53:00

Groups and Files

Time of First Successful Submission: 2026-01-12 10:57:35

Fun With Groups Names

Time of First Successful Submission: 2026-01-12 10:59:28

Changing Permissions

Time of First Successful Submission: 2026-01-12 11:02:25

Executable Files

Time of First Successful Submission: 2026-01-12 11:05:08

Permission Tweaking Practice

Time of First Successful Submission: 2026-01-12 11:16:38

Permissions Setting Practice

Time of First Successful Submission: 2026-01-12 11:23:29

The SUID Bit

Time of First Successful Submission: 2026-01-12 11:30:21

Chaining with Semicolons

Time of First Successful Submission: 2026-01-12 11:32:05

Building on Success

Time of First Successful Submission: 2026-01-12 11:34:24

Handling Failure

Time of First Successful Submission: 2026-01-12 11:35:21

Your First Shell Script

Time of First Successful Submission: 2026-01-12 11:42:22

Redirecting Script Output

Time of First Successful Submission: 2026-01-12 11:49:50

Executable Shell Scripts

Time of First Successful Submission: 2026-01-12 11:57:44

Understanding Shebangs

Time of First Successful Submission: 2026-01-12 12:09:40

Scripting with Arguments

Time of First Successful Submission: 2026-01-12 12:16:45

Scripting with Conditionals

Time of First Successful Submission: 2026-01-12 13:29:53

Scripting with Default Cases

Time of First Successful Submission: 2026-01-12 13:45:55

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-12 14:01:38

Reading Shell Scripts

Time of First Successful Submission: 2026-01-12 14:05:07

Launching Screen

Time of First Successful Submission: 2026-01-12 14:07:14

Detaching and Attaching

Time of First Successful Submission: 2026-01-12 14:12:47

Finding Sessions

Time of First Successful Submission: 2026-01-12 14:22:06

Switching Windows

Time of First Successful Submission: 2026-01-12 14:25:23

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-12 14:28:10

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-12 14:30:25

The PATH Variable

Time of First Successful Submission: 2026-01-12 14:45:07

Setting PATH

Time of First Successful Submission: 2026-01-12 15:01:36

Finding Commands

Time of First Successful Submission: 2026-01-12 15:11:33

Adding Commands

Time of First Successful Submission: 2026-01-12 15:35:11

Hijacking Commands

Time of First Successful Submission: 2026-01-12 16:08:30

Bashrc Backdoor

Time of First Successful Submission: 2026-01-12 16:18:17

Sniffing Input

Time of First Successful Submission: 2026-01-12 17:13:16

Overshared Directories

Time of First Successful Submission: 2026-01-12 17:22:41

Tricky Linking

Time of First Successful Submission: 2026-01-12 17:32:35

Sniffing Process Arguments

Time of First Successful Submission: 2026-01-12 17:35:39

Snooping on Configurations

Time of First Successful Submission: 2026-01-12 17:40:03

The Fork Bomb

Time of First Successful Submission: 2026-01-13 06:08:03

Disk-Space Doomsday

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

rm -rf /

Time of First Successful Submission: 2026-01-13 06:26:36

Life after rm -rf /

Time of First Successful Submission: 2026-01-13 06:32:56

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-01-13 07:38:58


Computing 101

68 / 94 2283 / 21494


Your First Register

Time of First Successful Submission: 2026-01-14 14:55:32

Your First Syscall

Time of First Successful Submission: 2026-01-14 15:19:53

Exit Codes

Time of First Successful Submission: 2026-01-14 15:43:48

Building Executables

Time of First Successful Submission: 2026-01-15 05:13:52

Moving Between Registers

Time of First Successful Submission: 2026-01-15 05:21:30

Loading From Memory

Time of First Successful Submission: 2026-01-15 05:44:14

More Loading Practice

Time of First Successful Submission: 2026-01-15 05:51:08

Dereferencing Pointers

Time of First Successful Submission: 2026-01-15 06:01:16

Dereferencing Yourself

Time of First Successful Submission: 2026-01-15 06:05:13

Dereferencing with Offsets

Time of First Successful Submission: 2026-01-15 06:11:11

Stored Addresses

Time of First Successful Submission: 2026-01-15 06:30:06

Double Dereference

Time of First Successful Submission: 2026-01-15 11:16:58

Tracing Syscalls

Time of First Successful Submission: 2026-01-15 05:28:46

Starting GDB

Time of First Successful Submission: 2026-01-15 05:32:42

Starting Programs in GDB

Time of First Successful Submission: 2026-01-15 05:38:31

Writing Output

Time of First Successful Submission: 2026-01-15 11:59:27

Chaining Syscalls

Time of First Successful Submission: 2026-01-15 12:01:59

Writing Strings

Time of First Successful Submission: 2026-01-15 12:03:48

Reading Data

Time of First Successful Submission: 2026-01-15 12:27:58

set-register

Time of First Successful Submission: 2026-01-16 04:43:51

set-multiple-registers

Time of First Successful Submission: 2026-01-16 04:49:25

add-to-register

Time of First Successful Submission: 2026-01-16 04:55:31

linear-equation-registers

Time of First Successful Submission: 2026-01-16 05:00:39

integer-division

Time of First Successful Submission: 2026-01-16 05:15:58

modulo-operation

Time of First Successful Submission: 2026-01-16 05:24:22

set-upper-byte

Time of First Successful Submission: 2026-01-16 05:36:53

efficient-modulo

Time of First Successful Submission: 2026-01-16 05:49:15

byte-extraction

Time of First Successful Submission: 2026-01-16 06:03:24

bitwise-and

Time of First Successful Submission: 2026-01-16 06:17:56

check-even

Time of First Successful Submission: 2026-01-16 14:19:25

memory-read

Time of First Successful Submission: 2026-01-16 16:32:18

memory-write

Time of First Successful Submission: 2026-01-16 16:34:04

memory-increment

Time of First Successful Submission: 2026-01-16 16:46:26

byte-access

Time of First Successful Submission: 2026-01-16 16:56:15

memory-size-access

Time of First Successful Submission: 2026-01-16 16:59:51

little-endian-write

Time of First Successful Submission: 2026-01-16 17:11:12

memory-sum

Time of First Successful Submission: 2026-01-16 17:29:40

stack-subtraction

Time of First Successful Submission: 2026-01-16 17:35:51

swap-stack-values

Time of First Successful Submission: 2026-01-16 17:37:37

average-stack-values

Time of First Successful Submission: 2026-01-16 17:48:04

absolute-jump

Time of First Successful Submission: 2026-01-17 08:34:49

relative-jump

Time of First Successful Submission: 2026-01-17 08:59:47

jump-trampoline

Time of First Successful Submission: 2026-01-17 09:28:52

conditional-jump

Time of First Successful Submission: 2026-01-17 11:22:50

indirect-jump

Time of First Successful Submission: 2026-01-17 12:56:06

average-loop

Time of First Successful Submission: 2026-01-17 13:15:43

count-non-zero

Time of First Successful Submission: 2026-01-17 14:33:14

string-lower

Time of First Successful Submission: 2026-01-18 14:08:28

most-common-byte

Time of First Successful Submission: 2026-01-19 07:04:02

Exit

Time of First Successful Submission: 2026-01-19 16:20:50

Socket

Time of First Successful Submission: 2026-01-19 16:46:44

Bind

Time of First Successful Submission: 2026-01-19 17:48:49

Listen

Time of First Successful Submission: 2026-01-19 17:55:30

Accept

Time of First Successful Submission: 2026-01-19 18:01:59

Static Response

Time of First Successful Submission: 2026-01-19 18:30:30

Dynamic Response

Time of First Successful Submission: 2026-01-21 04:46:09

Iterative GET Server

Time of First Successful Submission: 2026-01-21 05:00:08

Concurrent GET Server

Time of First Successful Submission: 2026-01-21 06:28:58

Concurrent POST Server

Time of First Successful Submission: 2026-01-21 12:20:50

Web Server

Time of First Successful Submission: 2026-01-21 12:52:53

Debugging Programs

Time of First Successful Submission: 2026-01-19 07:12:05

Inspecting Registers

Time of First Successful Submission: 2026-01-19 07:15:01

Examining Memory

Time of First Successful Submission: 2026-01-19 11:25:26

Setting Breakpoints

Time of First Successful Submission: 2026-01-19 12:17:31

GDB Scripting

Time of First Successful Submission: 2026-01-19 13:05:13

Modifying Data

Time of First Successful Submission: 2026-01-19 15:14:20

Modifying Execution

Time of First Successful Submission: 2026-01-19 15:21:42

Broken Functions

Time of First Successful Submission: 2026-01-19 15:49:39


Playing With Programs

116 / 116 700 / 23364


What's the password?

Time of First Successful Submission: 2026-01-21 12:59:57

... and again!

Time of First Successful Submission: 2026-01-21 13:01:09

Newline Troubles

Time of First Successful Submission: 2026-01-21 13:03:40

Reasoning about files

Time of First Successful Submission: 2026-01-21 13:17:33

Specifying Filenames

Time of First Successful Submission: 2026-01-21 13:23:31

Binary and Hex Encoding

Time of First Successful Submission: 2026-01-21 13:47:39

More Hex

Time of First Successful Submission: 2026-01-23 04:15:02

Decoding Hex

Time of First Successful Submission: 2026-01-23 04:26:03

Decoding Practice

Time of First Successful Submission: 2026-01-23 05:08:19

Encoding Practice

Time of First Successful Submission: 2026-01-23 05:39:58

Hex-encoding ASCII

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

Nested Encoding

Time of First Successful Submission: 2026-01-23 06:12:46

Hex-encoding UTF-8

Time of First Successful Submission: 2026-01-23 06:32:22

UTF Mixups

Time of First Successful Submission: 2026-01-23 06:58:53

Modifying Encoded Data

Time of First Successful Submission: 2026-01-23 14:08:29

Decoding Base64

Time of First Successful Submission: 2026-01-23 14:40:56

Encoding Base64

Time of First Successful Submission: 2026-01-23 15:46:37

Dealing with Obfuscation

Time of First Successful Submission: 2026-01-23 15:53:17

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-01-23 16:15:15

Your First HTTP Request

Time of First Successful Submission: 2026-01-23 16:19:49

Reading Flask

Time of First Successful Submission: 2026-01-23 16:23:39

Commented Data

Time of First Successful Submission: 2026-01-23 16:43:26

HTTP Metadata

Time of First Successful Submission: 2026-01-23 16:48:15

HTTP (netcat)

Time of First Successful Submission: 2026-01-23 16:53:19

HTTP Paths (netcat)

Time of First Successful Submission: 2026-01-23 16:55:43

HTTP (curl)

Time of First Successful Submission: 2026-01-24 11:19:12

HTTP (python)

Time of First Successful Submission: 2026-01-24 11:23:41

HTTP Host Header (python)

Time of First Successful Submission: 2026-01-24 11:33:02

HTTP Host Header (curl)

Time of First Successful Submission: 2026-01-24 11:40:59

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-01-24 11:43:36

URL Encoding (netcat)

Time of First Successful Submission: 2026-01-24 11:50:59

HTTP GET Parameters

Time of First Successful Submission: 2026-01-24 11:54:08

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-01-24 11:56:53

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-01-24 12:01:50

HTTP Forms

Time of First Successful Submission: 2026-01-24 12:17:02

HTTP Forms (curl)

Time of First Successful Submission: 2026-01-24 12:22:15

HTTP Forms (netcat)

Time of First Successful Submission: 2026-01-24 12:37:32

HTTP Forms (python)

Time of First Successful Submission: 2026-01-24 12:56:08

HTTP Forms Without Forms

Time of First Successful Submission: 2026-01-24 12:58:35

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-01-24 13:01:18

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-01-24 13:05:23

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-01-24 13:29:34

HTTP Redirects (curl)

Time of First Successful Submission: 2026-01-24 13:40:51

HTTP Redirects (python)

Time of First Successful Submission: 2026-01-24 13:47:18

HTTP Cookies (curl)

Time of First Successful Submission: 2026-01-24 13:51:37

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-01-24 13:56:24

HTTP Cookies (python)

Time of First Successful Submission: 2026-01-24 13:58:34

Server State (python)

Time of First Successful Submission: 2026-01-24 15:36:08

Listening Web

Time of First Successful Submission: 2026-01-26 04:16:35

Speaking Redirects

Time of First Successful Submission: 2026-01-26 04:30:28

JavaScript Redirects

Time of First Successful Submission: 2026-01-26 04:44:51

Including JavaScript

Time of First Successful Submission: 2026-01-26 06:03:33

HTTP (javascript)

Time of First Successful Submission: 2026-01-26 06:54:23

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-01-26 06:56:44

HTTP Forms (javascript)

Time of First Successful Submission: 2026-01-26 07:03:11

cat

Time of First Successful Submission: 2026-01-26 07:05:33

more

Time of First Successful Submission: 2026-01-26 07:11:09

less

Time of First Successful Submission: 2026-01-26 07:12:06

tail

Time of First Successful Submission: 2026-01-26 07:12:29

head

Time of First Successful Submission: 2026-01-26 07:12:49

sort

Time of First Successful Submission: 2026-01-26 07:13:09

vim

Time of First Successful Submission: 2026-01-26 07:13:34

emacs

Time of First Successful Submission: 2026-01-26 07:15:37

nano

Time of First Successful Submission: 2026-01-26 07:17:01

rev

Time of First Successful Submission: 2026-01-26 07:17:44

od

Time of First Successful Submission: 2026-01-26 07:21:26

hd

Time of First Successful Submission: 2026-01-26 07:22:35

xxd

Time of First Successful Submission: 2026-01-26 07:26:47

base32

Time of First Successful Submission: 2026-01-26 07:29:43

base64

Time of First Successful Submission: 2026-01-26 07:30:20

split

Time of First Successful Submission: 2026-01-26 07:33:07

gzip

Time of First Successful Submission: 2026-01-26 07:39:54

bzip2

Time of First Successful Submission: 2026-01-26 07:40:38

zip

Time of First Successful Submission: 2026-01-26 07:46:20

tar

Time of First Successful Submission: 2026-01-26 07:52:03

ar

Time of First Successful Submission: 2026-01-26 07:56:24

cpio

Time of First Successful Submission: 2026-01-26 08:00:36

genisoimage

Time of First Successful Submission: 2026-01-26 08:05:32

env

Time of First Successful Submission: 2026-01-26 08:08:09

find

Time of First Successful Submission: 2026-01-26 08:13:02

make

Time of First Successful Submission: 2026-01-26 08:18:35

nice

Time of First Successful Submission: 2026-01-26 08:26:53

timeout

Time of First Successful Submission: 2026-01-26 08:28:05

stdbuf

Time of First Successful Submission: 2026-01-26 08:29:08

setarch

Time of First Successful Submission: 2026-01-26 08:30:26

watch

Time of First Successful Submission: 2026-01-26 08:32:07

socat

Time of First Successful Submission: 2026-01-26 08:35:13

whiptail

Time of First Successful Submission: 2026-01-26 08:52:53

awk

Time of First Successful Submission: 2026-01-26 08:56:21

sed

Time of First Successful Submission: 2026-01-26 08:57:40

ed

Time of First Successful Submission: 2026-01-26 12:11:02

chown

Time of First Successful Submission: 2026-01-26 12:12:13

chmod

Time of First Successful Submission: 2026-01-26 13:53:20

cp

Time of First Successful Submission: 2026-01-26 13:54:32

mv

Time of First Successful Submission: 2026-01-26 14:17:40

perl

Time of First Successful Submission: 2026-01-26 14:22:40

python

Time of First Successful Submission: 2026-01-26 14:24:04

ruby

Time of First Successful Submission: 2026-01-26 14:25:08

bash

Time of First Successful Submission: 2026-01-26 14:26:35

date

Time of First Successful Submission: 2026-01-26 15:07:35

dmesg

Time of First Successful Submission: 2026-01-26 15:16:04

wc

Time of First Successful Submission: 2026-01-26 15:18:43

gcc

Time of First Successful Submission: 2026-01-26 16:10:14

as

Time of First Successful Submission: 2026-01-26 16:15:10

wget

Time of First Successful Submission: 2026-01-27 05:44:04

ssh-keygen

Time of First Successful Submission: 2026-01-27 07:09:50

SQL Queries

Time of First Successful Submission: 2026-01-27 07:17:22

Filtering SQL

Time of First Successful Submission: 2026-01-27 07:25:45

Choosing Columns

Time of First Successful Submission: 2026-01-27 07:30:19

Exclusionary Filtering

Time of First Successful Submission: 2026-01-27 07:34:59

Filtering Strings

Time of First Successful Submission: 2026-01-27 07:37:57

Filtering on Expressions

Time of First Successful Submission: 2026-01-27 07:47:03

SELECTing Expressions

Time of First Successful Submission: 2026-01-27 07:54:46

Composite Conditions

Time of First Successful Submission: 2026-01-27 07:56:58

Reaching Your LIMITs

Time of First Successful Submission: 2026-01-27 07:59:31

Querying Metadata

Time of First Successful Submission: 2026-01-27 08:06:39


GCA CTF

12 / 104 965 / 43538


Using the Terminal

Time of First Successful Submission: 2026-01-10 04:59:17

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-10 10:35:07

Using the GUI Desktop

Time of First Successful Submission: 2026-01-10 10:38:09

Pasting into the Desktop

Time of First Successful Submission: 2026-01-10 10:41:29

Connecting over SSH

Time of First Successful Submission: 2026-01-10 10:59:32

Restarting Challenges

Time of First Successful Submission: 2026-01-10 11:02:38

Getting Help

Time of First Successful Submission: 2026-01-10 11:14:38

Challenge Programs

Time of First Successful Submission: 2026-01-10 11:28:12

The Flag File

Time of First Successful Submission: 2026-01-10 11:31:55

Using Privileged Mode

Time of First Successful Submission: 2026-01-10 11:38:42

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-10 11:43:32

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-10 11:44:11