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1 / 202 22589 / 22760

Triple Dereference

Time of First Successful Submission: 2026-02-08 21:43:41

Intro to Programming Languages

15 / 234 8355 / 30721

Commands

Time of First Successful Submission: 2026-02-05 15:00:48

Command Arguments

Time of First Successful Submission: 2026-02-05 15:01:29

Command History

Time of First Successful Submission: 2026-02-05 15:02:17

The Root Path

Time of First Successful Submission: 2026-02-05 15:03:07

Absolute Paths

Time of First Successful Submission: 2026-02-05 15:04:06

Changing position

Time of First Successful Submission: 2026-02-05 15:05:06

Changing to an Absolute Path

Time of First Successful Submission: 2026-02-05 15:07:33

Relative Paths

Time of First Successful Submission: 2026-02-05 15:12:46

Cat

Time of First Successful Submission: 2026-02-05 21:02:05

Ls

Time of First Successful Submission: 2026-02-05 21:09:23

Ls All

Time of First Successful Submission: 2026-02-05 21:13:04

Find

Time of First Successful Submission: 2026-02-05 21:25:36

Piping Echo

Time of First Successful Submission: 2026-02-06 06:10:24

Piping Stdout

Time of First Successful Submission: 2026-02-06 06:11:38

Piping Stdin

Time of First Successful Submission: 2026-02-06 06:16:38

Intro to Cybersecurity

47 / 183 6542 / 19493

Path Traversal 1

Time of First Successful Submission: 2026-02-27 02:01:54

Path Traversal 2

Time of First Successful Submission: 2026-02-27 02:23:48

CMDi 1

Time of First Successful Submission: 2026-02-25 03:47:29

CMDi 2

Time of First Successful Submission: 2026-02-25 03:50:05

CMDi 3

Time of First Successful Submission: 2026-02-25 03:55:53

CMDi 4

Time of First Successful Submission: 2026-02-25 03:59:05

CMDi 5

Time of First Successful Submission: 2026-02-25 04:03:53

CMDi 6

Time of First Successful Submission: 2026-02-25 04:24:10

Authentication Bypass 1

Time of First Successful Submission: 2026-02-25 05:19:07

Authentication Bypass 2

Time of First Successful Submission: 2026-02-25 05:34:00

SQLi 1

Time of First Successful Submission: 2026-02-27 00:57:26

SQLi 2

Time of First Successful Submission: 2026-02-27 01:16:37

SQLi 3

Time of First Successful Submission: 2026-02-27 01:26:54

SQLi 4

Time of First Successful Submission: 2026-02-27 01:46:49

SQLi 5

Time of First Successful Submission: 2026-02-27 01:56:31

XSS 1

Time of First Successful Submission: 2026-03-02 10:05:13

XSS 2

Time of First Successful Submission: 2026-03-02 10:17:53

XSS 3

Time of First Successful Submission: 2026-03-02 10:43:56

XSS 4

Time of First Successful Submission: 2026-03-02 10:57:14

XSS 5

Time of First Successful Submission: 2026-03-03 06:34:30

XSS 6

Time of First Successful Submission: 2026-03-03 06:50:24

XSS 7

Time of First Successful Submission: 2026-03-04 01:18:06

CSRF 1

Time of First Successful Submission: 2026-03-05 06:31:00

CSRF 2

Time of First Successful Submission: 2026-03-06 04:03:53

CSRF 3

Time of First Successful Submission: 2026-03-06 04:30:47

CSRF 4

Time of First Successful Submission: 2026-03-06 04:52:58

CSRF 5

Time of First Successful Submission: 2026-03-06 05:10:22

Connect

Time of First Successful Submission: 2026-03-10 09:39:58

Send

Time of First Successful Submission: 2026-03-10 09:41:06

Shutdown

Time of First Successful Submission: 2026-03-10 09:43:18

Listen

Time of First Successful Submission: 2026-03-10 09:44:28

Scan 1

Time of First Successful Submission: 2026-03-10 11:44:42

Scan 2

Time of First Successful Submission: 2026-03-10 11:57:38

Monitor 1

Time of First Successful Submission: 2026-03-10 13:00:21

Monitor 2

Time of First Successful Submission: 2026-03-10 13:32:08

Sniffing Cookies

Time of First Successful Submission: 2026-03-10 13:53:45

Network Configuration

Time of First Successful Submission: 2026-03-10 14:30:54

Firewall 1

Time of First Successful Submission: 2026-03-10 15:00:15

Firewall 2

Time of First Successful Submission: 2026-03-10 15:02:38

Firewall 3

Time of First Successful Submission: 2026-03-10 15:06:46

Denial of Service 1

Time of First Successful Submission: 2026-03-10 15:29:47

Denial of Service 2

Time of First Successful Submission: 2026-03-10 15:32:38

Denial of Service 3

Time of First Successful Submission: 2026-03-10 16:08:26

Ethernet

Time of First Successful Submission: 2026-03-10 19:17:54

IP

Time of First Successful Submission: 2026-03-10 19:22:04

TCP

Time of First Successful Submission: 2026-03-10 19:24:28

TCP Handshake

Time of First Successful Submission: 2026-03-10 19:35:20

UDP

Time of First Successful Submission: 2026-03-10 20:44:32

Start Here

12 / 12 1127 / 41665

Using the Terminal

Time of First Successful Submission: 2026-02-05 14:34:47

Using the VSCode Workspace

Time of First Successful Submission: 2026-02-05 14:36:35

Using the GUI Desktop

Time of First Successful Submission: 2026-02-05 14:43:38

Pasting into the Desktop

Time of First Successful Submission: 2026-02-05 14:45:03

Restarting Challenges

Time of First Successful Submission: 2026-02-05 14:46:24

Challenge Programs

Time of First Successful Submission: 2026-02-05 14:48:07

The Flag File

Time of First Successful Submission: 2026-02-05 14:50:05

Using Privileged Mode

Time of First Successful Submission: 2026-02-05 14:51:40

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-05 14:53:12

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-05 14:53:44

Linux Luminarium

128 / 128 1946 / 31110

Intro to Commands

Time of First Successful Submission: 2026-02-05 15:00:48

Intro to Arguments

Time of First Successful Submission: 2026-02-05 15:01:29

Command History

Time of First Successful Submission: 2026-02-05 15:02:17

The Root

Time of First Successful Submission: 2026-02-05 15:03:07

Program and absolute paths

Time of First Successful Submission: 2026-02-05 15:04:06

Position thy self

Time of First Successful Submission: 2026-02-05 15:05:06

Position elsewhere

Time of First Successful Submission: 2026-02-05 15:07:33

implicit relative paths, from /

Time of First Successful Submission: 2026-02-05 15:12:46

explicit relative paths, from /

Time of First Successful Submission: 2026-02-05 15:13:59

implicit relative path

Time of First Successful Submission: 2026-02-05 15:14:50

home sweet home

Time of First Successful Submission: 2026-02-05 15:16:33

cat: not the pet, but the command!

Time of First Successful Submission: 2026-02-05 21:02:05

catting absolute paths

Time of First Successful Submission: 2026-02-05 21:02:39

more catting practice

Time of First Successful Submission: 2026-02-05 21:06:19

grepping for a needle in a haystack

Time of First Successful Submission: 2026-02-05 21:07:21

comparing files

Time of First Successful Submission: 2026-02-05 21:08:37

listing files

Time of First Successful Submission: 2026-02-05 21:09:23

touching files

Time of First Successful Submission: 2026-02-05 21:10:00

removing files

Time of First Successful Submission: 2026-02-05 21:10:56

moving files

Time of First Successful Submission: 2026-02-05 21:11:59

copying files

Time of First Successful Submission: 2026-02-05 21:12:31

hidden files

Time of First Successful Submission: 2026-02-05 21:13:04

An Epic Filesystem Quest

Time of First Successful Submission: 2026-02-05 21:20:42

making directories

Time of First Successful Submission: 2026-02-05 21:22:28

finding files

Time of First Successful Submission: 2026-02-05 21:25:36

linking files

Time of First Successful Submission: 2026-02-05 21:43:47

Learning From Documentation

Time of First Successful Submission: 2026-02-05 22:09:27

Learning Complex Usage

Time of First Successful Submission: 2026-02-05 22:10:38

Reading Manuals

Time of First Successful Submission: 2026-02-05 22:14:47

Searching Manuals

Time of First Successful Submission: 2026-02-05 22:17:01

Searching For Manuals

Time of First Successful Submission: 2026-02-05 22:28:03

Helpful Programs

Time of First Successful Submission: 2026-02-05 22:29:32

Help for Builtins

Time of First Successful Submission: 2026-02-05 22:33:08

Matching with *

Time of First Successful Submission: 2026-02-05 22:38:25

Matching with ?

Time of First Successful Submission: 2026-02-05 22:39:38

Matching with []

Time of First Successful Submission: 2026-02-05 22:41:53

Matching paths with []

Time of First Successful Submission: 2026-02-05 22:45:58

Multiple globs

Time of First Successful Submission: 2026-02-05 22:47:25

Mixing globs

Time of First Successful Submission: 2026-02-05 22:49:02

Exclusionary globbing

Time of First Successful Submission: 2026-02-05 22:50:24

Tab completion

Time of First Successful Submission: 2026-02-05 22:52:04

Multiple options for tab completion

Time of First Successful Submission: 2026-02-05 22:54:37

Tab completion on commands

Time of First Successful Submission: 2026-02-05 22:55:22

Redirecting output

Time of First Successful Submission: 2026-02-06 06:10:24

Redirecting more output

Time of First Successful Submission: 2026-02-06 06:11:38

Appending output

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

Redirecting errors

Time of First Successful Submission: 2026-02-06 06:15:16

Redirecting input

Time of First Successful Submission: 2026-02-06 06:16:38

Grepping stored results

Time of First Successful Submission: 2026-02-06 06:17:30

Grepping live output

Time of First Successful Submission: 2026-02-06 06:18:04

Grepping errors

Time of First Successful Submission: 2026-02-06 06:19:17

Filtering with grep -v

Time of First Successful Submission: 2026-02-06 06:20:02

Filtering with sed

Time of First Successful Submission: 2026-02-06 06:21:20

Duplicating piped data with tee

Time of First Successful Submission: 2026-02-06 06:28:01

Process substitution for input

Time of First Successful Submission: 2026-02-06 07:59:51

Writing to multiple programs

Time of First Successful Submission: 2026-02-06 08:03:57

Split-piping stderr and stdout

Time of First Successful Submission: 2026-02-06 08:05:49

Named pipes

Time of First Successful Submission: 2026-02-06 08:18:48

Printing Variables

Time of First Successful Submission: 2026-02-06 08:20:18

Setting Variables

Time of First Successful Submission: 2026-02-06 08:20:49

Multi-word Variables

Time of First Successful Submission: 2026-02-06 08:21:54

Exporting Variables

Time of First Successful Submission: 2026-02-06 08:25:41

Printing Exported Variables

Time of First Successful Submission: 2026-02-06 08:27:05

Storing Command Output

Time of First Successful Submission: 2026-02-06 08:29:39

Reading Input

Time of First Successful Submission: 2026-02-06 08:32:23

Reading Files

Time of First Successful Submission: 2026-02-06 08:37:23

Translating characters

Time of First Successful Submission: 2026-02-06 08:40:23

Deleting characters

Time of First Successful Submission: 2026-02-06 08:41:08

Deleting newlines

Time of First Successful Submission: 2026-02-06 08:41:53

Extracting the first lines with head

Time of First Successful Submission: 2026-02-06 08:42:50

Extracting specific sections of text

Time of First Successful Submission: 2026-02-06 08:44:27

Sorting data

Time of First Successful Submission: 2026-02-06 08:45:23

Listing Processes

Time of First Successful Submission: 2026-02-06 12:20:00

Killing Processes

Time of First Successful Submission: 2026-02-06 12:23:44

Interrupting Processes

Time of First Successful Submission: 2026-02-06 12:24:02

Killing Misbehaving Processes

Time of First Successful Submission: 2026-02-06 12:27:22

Suspending Processes

Time of First Successful Submission: 2026-02-06 12:28:46

Resuming Processes

Time of First Successful Submission: 2026-02-06 12:29:19

Backgrounding Processes

Time of First Successful Submission: 2026-02-06 12:31:06

Foregrounding Processes

Time of First Successful Submission: 2026-02-06 12:32:00

Starting Backgrounded Processes

Time of First Successful Submission: 2026-02-06 12:34:04

Process Exit Codes

Time of First Successful Submission: 2026-02-06 12:35:30

Becoming root with su

Time of First Successful Submission: 2026-02-06 12:40:57

Other users with su

Time of First Successful Submission: 2026-02-06 12:43:08

Cracking passwords

Time of First Successful Submission: 2026-02-06 12:47:46

Using sudo

Time of First Successful Submission: 2026-02-06 12:50:06

Changing File Ownership

Time of First Successful Submission: 2026-02-06 20:29:41

Groups and Files

Time of First Successful Submission: 2026-02-06 20:56:59

Fun With Groups Names

Time of First Successful Submission: 2026-02-06 20:59:34

Changing Permissions

Time of First Successful Submission: 2026-02-06 21:01:33

Executable Files

Time of First Successful Submission: 2026-02-06 21:03:00

Permission Tweaking Practice

Time of First Successful Submission: 2026-02-06 21:07:45

Permissions Setting Practice

Time of First Successful Submission: 2026-02-06 21:11:14

The SUID Bit

Time of First Successful Submission: 2026-02-06 21:13:20

Chaining with Semicolons

Time of First Successful Submission: 2026-02-06 21:14:52

Building on Success

Time of First Successful Submission: 2026-02-06 21:15:53

Handling Failure

Time of First Successful Submission: 2026-02-06 21:16:34

Your First Shell Script

Time of First Successful Submission: 2026-02-06 21:19:26

Redirecting Script Output

Time of First Successful Submission: 2026-02-07 06:25:54

Executable Shell Scripts

Time of First Successful Submission: 2026-02-07 06:27:05

Understanding Shebangs

Time of First Successful Submission: 2026-02-07 06:31:11

Scripting with Arguments

Time of First Successful Submission: 2026-02-07 06:32:21

Scripting with Conditionals

Time of First Successful Submission: 2026-02-07 06:36:16

Scripting with Default Cases

Time of First Successful Submission: 2026-02-07 06:37:10

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-02-07 06:40:06

Reading Shell Scripts

Time of First Successful Submission: 2026-02-07 06:41:38

Launching Screen

Time of First Successful Submission: 2026-02-07 06:43:02

Detaching and Attaching

Time of First Successful Submission: 2026-02-07 06:45:33

Finding Sessions

Time of First Successful Submission: 2026-02-07 06:47:38

Switching Windows

Time of First Successful Submission: 2026-02-07 06:49:35

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-02-07 06:50:55

Switching Windows (tmux)

Time of First Successful Submission: 2026-02-07 06:52:24

The PATH Variable

Time of First Successful Submission: 2026-02-07 07:04:48

Setting PATH

Time of First Successful Submission: 2026-02-07 07:07:26

Finding Commands

Time of First Successful Submission: 2026-02-07 07:10:57

Adding Commands

Time of First Successful Submission: 2026-02-07 07:15:06

Hijacking Commands

Time of First Successful Submission: 2026-02-07 07:17:38

Bashrc Backdoor

Time of First Successful Submission: 2026-02-07 07:21:54

Sniffing Input

Time of First Successful Submission: 2026-02-07 08:10:55

Overshared Directories

Time of First Successful Submission: 2026-02-07 08:14:46

Tricky Linking

Time of First Successful Submission: 2026-02-07 08:22:36

Sniffing Process Arguments

Time of First Successful Submission: 2026-02-07 15:38:44

Snooping on Configurations

Time of First Successful Submission: 2026-02-07 15:41:15

The Fork Bomb

Time of First Successful Submission: 2026-02-07 15:48:32

Disk-Space Doomsday

Time of First Successful Submission: 2026-02-07 15:55:08

rm -rf /

Time of First Successful Submission: 2026-02-07 15:53:00

Life after rm -rf /

Time of First Successful Submission: 2026-02-07 16:06:28

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-02-07 16:12:45

Computing 101

94 / 94 44 / 20980

Your First Register

Time of First Successful Submission: 2026-02-08 14:11:44

Your First Syscall

Time of First Successful Submission: 2026-02-08 14:15:02

Exit Codes

Time of First Successful Submission: 2026-02-08 14:21:08

Building Executables

Time of First Successful Submission: 2026-02-08 14:27:09

Moving Between Registers

Time of First Successful Submission: 2026-02-08 14:38:19

Loading From Memory

Time of First Successful Submission: 2026-02-08 21:05:04

More Loading Practice

Time of First Successful Submission: 2026-02-08 21:24:20

Dereferencing Pointers

Time of First Successful Submission: 2026-02-08 21:29:36

Dereferencing Yourself

Time of First Successful Submission: 2026-02-08 21:35:39

Dereferencing with Offsets

Time of First Successful Submission: 2026-02-08 21:37:05

Stored Addresses

Time of First Successful Submission: 2026-02-08 21:39:30

Double Dereference

Time of First Successful Submission: 2026-02-08 21:41:51

The Stack

Time of First Successful Submission: 2026-02-20 07:04:32

Stack Offsets

Time of First Successful Submission: 2026-02-20 07:05:21

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-20 07:06:49

Popping From the Stack

Time of First Successful Submission: 2026-02-20 07:08:29

Disassembling Programs

Time of First Successful Submission: 2026-02-19 22:58:26

Tracing Syscalls

Time of First Successful Submission: 2026-02-08 15:04:28

Starting GDB

Time of First Successful Submission: 2026-02-08 15:05:17

Quitting GDB

Time of First Successful Submission: 2026-02-19 18:01:30

Starting Programs in GDB

Time of First Successful Submission: 2026-02-08 15:06:21

Disassembling in GDB

Time of First Successful Submission: 2026-02-19 18:08:45

Stepping Through Instructions

Time of First Successful Submission: 2026-02-19 18:09:50

Reading Register Values

Time of First Successful Submission: 2026-02-19 22:25:28

Popping Stack Values

Time of First Successful Submission: 2026-02-19 22:26:15

Examining Memory

Time of First Successful Submission: 2026-02-19 22:29:04

Examining Stack Pointers

Time of First Successful Submission: 2026-02-19 22:49:46

Cooperative Debugging

Time of First Successful Submission: 2026-02-19 22:54:08

Writing Output

Time of First Successful Submission: 2026-02-09 01:26:12

Chaining Syscalls

Time of First Successful Submission: 2026-02-09 01:28:10

Writing Strings

Time of First Successful Submission: 2026-02-09 01:29:33

Reading Data

Time of First Successful Submission: 2026-02-09 01:39:13

Opening Files

Time of First Successful Submission: 2026-02-19 23:18:24

Hardcoding the Filename

Time of First Successful Submission: 2026-02-20 07:02:32

Comparing Values

Time of First Successful Submission: 2026-02-20 07:16:46

Comparing Characters

Time of First Successful Submission: 2026-02-20 07:24:36

Conditional Control Flow

Time of First Successful Submission: 2026-02-20 07:29:47

Comparing Strings

Time of First Successful Submission: 2026-02-20 07:34:07

Reverse the Password

Time of First Successful Submission: 2026-02-20 07:41:11

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-20 07:52:41

Looping

Time of First Successful Submission: 2026-02-20 07:56:09

Reverse the Calculation

Time of First Successful Submission: 2026-02-20 07:59:45

Reverse the Reverse

Time of First Successful Submission: 2026-02-20 08:00:46

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-20 08:01:44

Loops on Data

Time of First Successful Submission: 2026-02-20 08:09:09

set-register

Time of First Successful Submission: 2026-02-09 21:23:08

set-multiple-registers

Time of First Successful Submission: 2026-02-09 21:24:45

add-to-register

Time of First Successful Submission: 2026-02-09 21:26:47

linear-equation-registers

Time of First Successful Submission: 2026-02-09 21:30:03

integer-division

Time of First Successful Submission: 2026-02-09 21:34:14

modulo-operation

Time of First Successful Submission: 2026-02-09 21:36:37

set-upper-byte

Time of First Successful Submission: 2026-02-09 21:39:32

efficient-modulo

Time of First Successful Submission: 2026-02-09 21:50:23

byte-extraction

Time of First Successful Submission: 2026-02-10 05:56:43

bitwise-and

Time of First Successful Submission: 2026-02-10 05:58:47

check-even

Time of First Successful Submission: 2026-02-10 06:04:50

memory-read

Time of First Successful Submission: 2026-02-10 06:07:35

memory-write

Time of First Successful Submission: 2026-02-10 06:08:24

memory-increment

Time of First Successful Submission: 2026-02-10 06:10:58

byte-access

Time of First Successful Submission: 2026-02-10 06:13:16

memory-size-access

Time of First Successful Submission: 2026-02-10 06:15:40

little-endian-write

Time of First Successful Submission: 2026-02-10 06:36:40

memory-sum

Time of First Successful Submission: 2026-02-10 06:47:00

stack-subtraction

Time of First Successful Submission: 2026-02-10 06:53:57

swap-stack-values

Time of First Successful Submission: 2026-02-10 06:55:19

average-stack-values

Time of First Successful Submission: 2026-02-10 07:01:27

absolute-jump

Time of First Successful Submission: 2026-02-10 14:03:21

relative-jump

Time of First Successful Submission: 2026-02-10 14:24:24

jump-trampoline

Time of First Successful Submission: 2026-02-10 14:26:48

conditional-jump

Time of First Successful Submission: 2026-02-10 17:20:07

indirect-jump

Time of First Successful Submission: 2026-02-10 17:31:58

average-loop

Time of First Successful Submission: 2026-02-10 17:43:30

count-non-zero

Time of First Successful Submission: 2026-02-10 17:57:07

string-lower

Time of First Successful Submission: 2026-02-10 18:26:25

most-common-byte

Time of First Successful Submission: 2026-02-10 20:28:57

Exit

Time of First Successful Submission: 2026-02-17 17:14:09

Socket

Time of First Successful Submission: 2026-02-17 17:29:07

Bind

Time of First Successful Submission: 2026-02-21 00:46:04

Listen

Time of First Successful Submission: 2026-02-21 00:55:31

Accept

Time of First Successful Submission: 2026-02-21 00:59:29

Static Response

Time of First Successful Submission: 2026-02-21 09:19:48

Dynamic Response

Time of First Successful Submission: 2026-02-22 21:26:26

Iterative GET Server

Time of First Successful Submission: 2026-02-22 21:34:23

Concurrent GET Server

Time of First Successful Submission: 2026-02-22 21:41:01

Concurrent POST Server

Time of First Successful Submission: 2026-02-22 22:46:13

Web Server

Time of First Successful Submission: 2026-02-22 22:47:22

Debugging Programs

Time of First Successful Submission: 2026-02-14 16:53:27

Inspecting Registers

Time of First Successful Submission: 2026-02-14 16:55:39

Examining Memory

Time of First Successful Submission: 2026-02-14 17:15:25

Setting Breakpoints

Time of First Successful Submission: 2026-02-14 17:34:28

GDB Scripting

Time of First Successful Submission: 2026-02-16 08:35:53

Modifying Data

Time of First Successful Submission: 2026-02-16 08:40:34

Modifying Execution

Time of First Successful Submission: 2026-02-16 08:50:25

Broken Functions

Time of First Successful Submission: 2026-02-16 09:11:47

Playing With Programs

116 / 116 727 / 23034

What's the password?

Time of First Successful Submission: 2026-01-17 14:34:00

... and again!

Time of First Successful Submission: 2026-01-17 15:25:35

Newline Troubles

Time of First Successful Submission: 2026-01-17 15:30:51

Reasoning about files

Time of First Successful Submission: 2026-01-17 22:34:54

Specifying Filenames

Time of First Successful Submission: 2026-01-17 22:36:51

Binary and Hex Encoding

Time of First Successful Submission: 2026-01-17 22:55:59

More Hex

Time of First Successful Submission: 2026-01-17 22:58:10

Decoding Hex

Time of First Successful Submission: 2026-01-17 23:05:42

Decoding Practice

Time of First Successful Submission: 2026-01-18 07:49:54

Encoding Practice

Time of First Successful Submission: 2026-01-18 07:58:26

Hex-encoding ASCII

Time of First Successful Submission: 2026-01-18 08:06:21

Nested Encoding

Time of First Successful Submission: 2026-01-18 09:40:58

Hex-encoding UTF-8

Time of First Successful Submission: 2026-01-18 09:44:50

UTF Mixups

Time of First Successful Submission: 2026-01-18 09:49:40

Modifying Encoded Data

Time of First Successful Submission: 2026-01-18 10:04:35

Decoding Base64

Time of First Successful Submission: 2026-01-18 10:32:18

Encoding Base64

Time of First Successful Submission: 2026-01-18 10:39:20

Dealing with Obfuscation

Time of First Successful Submission: 2026-01-18 10:41:18

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-01-18 10:45:20

Your First HTTP Request

Time of First Successful Submission: 2026-02-03 11:07:39

Reading Flask

Time of First Successful Submission: 2026-02-03 11:11:30

Commented Data

Time of First Successful Submission: 2026-02-03 11:52:38

HTTP Metadata

Time of First Successful Submission: 2026-02-03 11:54:53

HTTP (netcat)

Time of First Successful Submission: 2026-02-03 12:06:23

HTTP Paths (netcat)

Time of First Successful Submission: 2026-02-03 12:07:58

HTTP (curl)

Time of First Successful Submission: 2026-02-03 12:09:23

HTTP (python)

Time of First Successful Submission: 2026-02-03 12:14:59

HTTP Host Header (python)

Time of First Successful Submission: 2026-02-03 12:29:49

HTTP Host Header (curl)

Time of First Successful Submission: 2026-02-03 12:54:02

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-02-03 13:01:49

URL Encoding (netcat)

Time of First Successful Submission: 2026-02-03 13:34:56

HTTP GET Parameters

Time of First Successful Submission: 2026-02-03 13:37:27

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-02-03 13:53:09

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-02-03 13:56:56

HTTP Forms

Time of First Successful Submission: 2026-02-03 14:15:16

HTTP Forms (curl)

Time of First Successful Submission: 2026-02-03 14:16:32

HTTP Forms (netcat)

Time of First Successful Submission: 2026-02-03 14:36:49

HTTP Forms (python)

Time of First Successful Submission: 2026-02-03 14:41:31

HTTP Forms Without Forms

Time of First Successful Submission: 2026-02-03 15:20:48

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-02-03 15:23:00

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-02-03 15:36:51

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-02-03 15:50:56

HTTP Redirects (curl)

Time of First Successful Submission: 2026-02-03 15:52:22

HTTP Redirects (python)

Time of First Successful Submission: 2026-02-03 15:53:47

HTTP Cookies (curl)

Time of First Successful Submission: 2026-02-03 16:04:35

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-02-03 16:06:36

HTTP Cookies (python)

Time of First Successful Submission: 2026-02-03 16:09:18

Server State (python)

Time of First Successful Submission: 2026-02-03 16:16:55

Listening Web

Time of First Successful Submission: 2026-02-03 16:20:06

Speaking Redirects

Time of First Successful Submission: 2026-02-03 16:35:54

JavaScript Redirects

Time of First Successful Submission: 2026-02-03 20:49:02

Including JavaScript

Time of First Successful Submission: 2026-02-03 21:22:18

HTTP (javascript)

Time of First Successful Submission: 2026-02-03 21:46:11

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-02-03 21:51:34

HTTP Forms (javascript)

Time of First Successful Submission: 2026-02-03 22:24:32

cat

Time of First Successful Submission: 2022-10-20 20:39:56

more

Time of First Successful Submission: 2022-10-20 20:43:07

less

Time of First Successful Submission: 2022-10-20 20:45:12

tail

Time of First Successful Submission: 2022-10-20 20:46:18

head

Time of First Successful Submission: 2022-10-20 20:47:19

sort

Time of First Successful Submission: 2022-10-20 20:49:52

vim

Time of First Successful Submission: 2022-10-20 20:51:21

emacs

Time of First Successful Submission: 2022-10-20 20:52:14

nano

Time of First Successful Submission: 2022-10-20 20:53:47

rev

Time of First Successful Submission: 2022-10-20 20:55:26

od

Time of First Successful Submission: 2022-10-20 21:00:39

hd

Time of First Successful Submission: 2022-10-20 21:19:38

xxd

Time of First Successful Submission: 2022-10-20 21:28:07

base32

Time of First Successful Submission: 2022-10-20 21:29:39

base64

Time of First Successful Submission: 2022-10-20 21:31:37

split

Time of First Successful Submission: 2022-10-20 21:33:27

gzip

Time of First Successful Submission: 2022-10-20 21:37:46

bzip2

Time of First Successful Submission: 2022-10-20 21:39:24

zip

Time of First Successful Submission: 2022-10-20 21:48:43

tar

Time of First Successful Submission: 2022-10-20 21:55:49

ar

Time of First Successful Submission: 2022-10-20 21:58:29

cpio

Time of First Successful Submission: 2022-10-21 08:33:32

genisoimage

Time of First Successful Submission: 2022-10-21 09:01:21

env

Time of First Successful Submission: 2022-10-21 09:21:36

find

Time of First Successful Submission: 2022-10-21 09:24:08

make

Time of First Successful Submission: 2022-10-21 09:29:49

nice

Time of First Successful Submission: 2022-10-21 09:31:52

timeout

Time of First Successful Submission: 2022-10-21 09:33:09

stdbuf

Time of First Successful Submission: 2022-10-21 09:35:25

setarch

Time of First Successful Submission: 2022-10-21 09:37:58

watch

Time of First Successful Submission: 2022-10-21 10:37:19

socat

Time of First Successful Submission: 2022-10-21 10:44:37

whiptail

Time of First Successful Submission: 2022-10-21 10:47:10

awk

Time of First Successful Submission: 2022-10-21 10:48:46

sed

Time of First Successful Submission: 2022-10-21 10:51:27

ed

Time of First Successful Submission: 2022-10-21 10:58:24

chown

Time of First Successful Submission: 2022-10-21 11:01:08

chmod

Time of First Successful Submission: 2022-10-21 11:02:10

cp

Time of First Successful Submission: 2022-10-21 11:02:53

mv

Time of First Successful Submission: 2022-10-21 12:30:02

perl

Time of First Successful Submission: 2022-10-21 12:36:44

python

Time of First Successful Submission: 2022-10-21 12:37:58

ruby

Time of First Successful Submission: 2022-10-21 12:40:47

bash

Time of First Successful Submission: 2022-10-21 12:41:30

date

Time of First Successful Submission: 2022-10-21 12:42:42

dmesg

Time of First Successful Submission: 2022-10-21 12:44:08

wc

Time of First Successful Submission: 2022-10-21 12:46:41

gcc

Time of First Successful Submission: 2022-10-21 12:54:32

as

Time of First Successful Submission: 2022-10-21 13:12:51

wget

Time of First Successful Submission: 2022-10-21 14:21:16

ssh-keygen

Time of First Successful Submission: 2026-02-03 22:45:29

SQL Queries

Time of First Successful Submission: 2026-02-04 20:34:40

Filtering SQL

Time of First Successful Submission: 2026-02-04 20:42:39

Choosing Columns

Time of First Successful Submission: 2026-02-04 20:48:17

Exclusionary Filtering

Time of First Successful Submission: 2026-02-04 20:55:23

Filtering Strings

Time of First Successful Submission: 2026-02-04 20:57:04

Filtering on Expressions

Time of First Successful Submission: 2026-02-04 21:00:04

SELECTing Expressions

Time of First Successful Submission: 2026-02-05 08:04:25

Composite Conditions

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

Reaching Your LIMITs

Time of First Successful Submission: 2026-02-05 08:15:00

Querying Metadata

Time of First Successful Submission: 2026-02-05 08:28:35

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-02-05 14:34:47

Using the VSCode Workspace

Time of First Successful Submission: 2026-02-05 14:36:35

Using the GUI Desktop

Time of First Successful Submission: 2026-02-05 14:43:38

Pasting into the Desktop

Time of First Successful Submission: 2026-02-05 14:45:03

Connecting over SSH

Time of First Successful Submission: 2026-02-05 20:56:32

Restarting Challenges

Time of First Successful Submission: 2026-02-05 14:46:24

Getting Help

Time of First Successful Submission: 2026-02-05 14:56:21

Challenge Programs

Time of First Successful Submission: 2026-02-05 14:48:07

The Flag File

Time of First Successful Submission: 2026-02-05 14:50:05

Using Privileged Mode

Time of First Successful Submission: 2026-02-05 14:51:40

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-05 14:53:12

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-05 14:53:44

Kitten Playground

1 / 1 13 / 13

Rijndael

Time of First Successful Submission: 2026-02-11 09:14:39