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1 / 202 18482 / 22794


Triple Dereference

Time of First Successful Submission: 2025-05-08 21:28:17


Intro to Programming Languages

15 / 234 8774 / 31985


Commands

Time of First Successful Submission: 2025-06-08 01:18:43

Command Arguments

Time of First Successful Submission: 2026-02-20 18:57:30

Command History

Time of First Successful Submission: 2026-02-20 18:57:59

The Root Path

Time of First Successful Submission: 2026-02-20 18:58:38

Absolute Paths

Time of First Successful Submission: 2026-02-20 18:59:07

Changing position

Time of First Successful Submission: 2026-02-20 19:00:22

Changing to an Absolute Path

Time of First Successful Submission: 2026-02-20 19:11:56

Relative Paths

Time of First Successful Submission: 2026-02-20 19:16:36

Cat

Time of First Successful Submission: 2026-02-20 19:24:07

Ls

Time of First Successful Submission: 2026-02-20 19:31:30

Ls All

Time of First Successful Submission: 2026-02-20 19:34:51

Find

Time of First Successful Submission: 2026-02-20 19:42:29

Piping Echo

Time of First Successful Submission: 2026-02-23 16:10:32

Piping Stdout

Time of First Successful Submission: 2026-02-23 16:11:43

Piping Stdin

Time of First Successful Submission: 2026-02-23 16:21:39


Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2026-03-03 16:59:51

Path Traversal 2

Time of First Successful Submission: 2026-03-03 17:18:54

CMDi 1

Time of First Successful Submission: 2026-03-03 17:22:51

CMDi 2

Time of First Successful Submission: 2026-03-03 17:29:50

CMDi 3

Time of First Successful Submission: 2026-03-03 17:32:20

CMDi 4

Time of First Successful Submission: 2026-03-03 17:34:51

CMDi 5

Time of First Successful Submission: 2026-03-03 17:38:25

CMDi 6

Time of First Successful Submission: 2026-03-03 17:47:47

Authentication Bypass 1

Time of First Successful Submission: 2026-03-03 18:07:30

Authentication Bypass 2

Time of First Successful Submission: 2026-03-03 18:18:11

SQLi 1

Time of First Successful Submission: 2026-03-03 18:41:21

SQLi 2

Time of First Successful Submission: 2026-03-03 18:43:46

SQLi 3

Time of First Successful Submission: 2026-03-03 18:57:56

SQLi 4

Time of First Successful Submission: 2026-03-03 19:06:22

SQLi 5

Time of First Successful Submission: 2026-03-03 19:45:20

XSS 1

Time of First Successful Submission: 2026-03-03 19:50:21

XSS 2

Time of First Successful Submission: 2026-03-03 19:54:13

XSS 3

Time of First Successful Submission: 2026-03-03 19:58:30

XSS 4

Time of First Successful Submission: 2026-03-03 20:10:13

XSS 5

Time of First Successful Submission: 2026-03-03 21:04:38

XSS 6

Time of First Successful Submission: 2026-03-03 21:11:06

XSS 7

Time of First Successful Submission: 2026-03-03 21:19:54

Connect

Time of First Successful Submission: 2026-03-04 16:21:32

Send

Time of First Successful Submission: 2026-03-04 16:22:10

Shutdown

Time of First Successful Submission: 2026-03-04 16:24:17

Listen

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

Scan 1

Time of First Successful Submission: 2026-03-04 16:36:03

Monitor 1

Time of First Successful Submission: 2026-03-04 17:05:24

Monitor 2

Time of First Successful Submission: 2026-03-04 17:10:56

Sniffing Cookies

Time of First Successful Submission: 2026-03-04 17:13:56

Firewall 1

Time of First Successful Submission: 2026-03-04 17:27:40

Firewall 2

Time of First Successful Submission: 2026-03-04 17:28:29

Firewall 3

Time of First Successful Submission: 2026-03-04 17:29:52

Denial of Service 1

Time of First Successful Submission: 2026-03-04 17:30:49

Ethernet

Time of First Successful Submission: 2026-03-04 17:38:53

IP

Time of First Successful Submission: 2026-03-04 17:39:38

TCP

Time of First Successful Submission: 2026-03-04 17:40:16

TCP Handshake

Time of First Successful Submission: 2026-03-04 17:41:20

level1

Time of First Successful Submission: 2026-03-04 17:44:57

level2

Time of First Successful Submission: 2026-03-04 17:45:45

level3

Time of First Successful Submission: 2026-03-04 17:46:47

level4

Time of First Successful Submission: 2026-03-04 17:47:16

level5

Time of First Successful Submission: 2026-03-04 17:54:14

level6

Time of First Successful Submission: 2026-03-04 17:55:19

level7

Time of First Successful Submission: 2026-03-04 17:56:05

level8

Time of First Successful Submission: 2026-03-04 17:56:41

level9

Time of First Successful Submission: 2026-03-04 17:57:14

level10

Time of First Successful Submission: 2026-03-04 17:58:30

level11

Time of First Successful Submission: 2026-03-04 18:00:14

level12

Time of First Successful Submission: 2026-03-04 18:01:33

level13

Time of First Successful Submission: 2026-03-04 18:02:24

level14

Time of First Successful Submission: 2026-03-04 18:03:25

level15

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

level16

Time of First Successful Submission: 2026-03-04 18:05:02

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2025-05-21 21:08:48

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2025-05-21 21:10:23

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2025-05-22 18:33:58

Reading Endianness (Python)

Time of First Successful Submission: 2025-05-22 18:37:39

Reading Endianness (C)

Time of First Successful Submission: 2025-05-22 18:44:35

Reading Endianness (x86)

Time of First Successful Submission: 2025-05-22 19:00:42

Version Information (Python)

Time of First Successful Submission: 2025-05-22 19:32:21

Version Information (C)

Time of First Successful Submission: 2025-05-22 19:51:13

Version Information (x86)

Time of First Successful Submission: 2025-05-22 19:57:42

Metadata and Data (Python)

Time of First Successful Submission: 2025-05-22 20:48:47

Metadata and Data (C)

Time of First Successful Submission: 2025-05-22 21:06:26

Metadata and Data (x86)

Time of First Successful Submission: 2025-05-22 21:12:29

Input Restrictions (Python)

Time of First Successful Submission: 2025-05-22 21:25:02

Input Restrictions (C)

Time of First Successful Submission: 2025-06-02 19:14:30

Input Restrictions (x86)

Time of First Successful Submission: 2025-06-02 19:23:39

Behold the cIMG! (Python)

Time of First Successful Submission: 2025-06-02 19:53:37

Behold the cIMG! (C)

Time of First Successful Submission: 2025-06-02 20:36:01

A Basic cIMG (Python)

Time of First Successful Submission: 2025-06-03 18:18:06

A Basic cIMG (C)

Time of First Successful Submission: 2025-06-03 18:43:29

A Basic cIMG (x86)

Time of First Successful Submission: 2025-06-03 18:47:14

Your First Overflow (easy)

Time of First Successful Submission: 2025-06-09 17:43:46

Your First Overflow (hard)

Time of First Successful Submission: 2025-06-09 17:52:47

Precision (easy)

Time of First Successful Submission: 2025-06-09 18:01:11

Precision (hard)

Time of First Successful Submission: 2025-06-09 18:36:54

Variable Control (easy)

Time of First Successful Submission: 2025-06-09 18:59:53

Variable Control (hard)

Time of First Successful Submission: 2025-06-09 19:15:16

Control Hijack (easy)

Time of First Successful Submission: 2025-06-09 19:25:31

Control Hijack (hard)

Time of First Successful Submission: 2025-06-09 20:33:32

Tricky Control Hijack (easy)

Time of First Successful Submission: 2025-06-10 13:54:13

Tricky Control Hijack (hard)

Time of First Successful Submission: 2025-06-10 15:08:41

PIEs (easy)

Time of First Successful Submission: 2025-06-10 18:05:58

PIEs (hard)

Time of First Successful Submission: 2025-06-10 18:47:30

String Lengths (easy)

Time of First Successful Submission: 2025-06-10 19:39:07

String Lengths (hard)

Time of First Successful Submission: 2025-06-11 14:07:35

Basic Shellcode

Time of First Successful Submission: 2025-06-11 14:41:39

NOP Sleds

Time of First Successful Submission: 2025-06-11 14:56:52

NULL-Free Shellcode

Time of First Successful Submission: 2025-06-11 15:50:40


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-02-20 18:40:36

Using the VSCode Workspace

Time of First Successful Submission: 2025-05-07 14:11:02

Using the GUI Desktop

Time of First Successful Submission: 2025-05-07 14:13:05

Pasting into the Desktop

Time of First Successful Submission: 2025-05-07 14:14:19

Restarting Challenges

Time of First Successful Submission: 2025-05-07 14:16:03

Challenge Programs

Time of First Successful Submission: 2025-05-07 14:19:33

The Flag File

Time of First Successful Submission: 2025-05-07 14:20:51

Using Privileged Mode

Time of First Successful Submission: 2025-05-07 14:22:56

Persistent Home Directories - One

Time of First Successful Submission: 2025-05-07 14:27:00

Persistent Home Directories - Two

Time of First Successful Submission: 2025-05-07 14:27:35


Linux Luminarium

128 / 128 2199 / 32394


Intro to Commands

Time of First Successful Submission: 2025-06-08 01:18:43

Intro to Arguments

Time of First Successful Submission: 2026-02-20 18:57:30

Command History

Time of First Successful Submission: 2026-02-20 18:57:59

The Root

Time of First Successful Submission: 2026-02-20 18:58:38

Program and absolute paths

Time of First Successful Submission: 2026-02-20 18:59:07

Position thy self

Time of First Successful Submission: 2026-02-20 19:00:22

Position elsewhere

Time of First Successful Submission: 2026-02-20 19:11:56

implicit relative paths, from /

Time of First Successful Submission: 2026-02-20 19:16:36

explicit relative paths, from /

Time of First Successful Submission: 2026-02-20 19:17:32

implicit relative path

Time of First Successful Submission: 2026-02-20 19:20:20

home sweet home

Time of First Successful Submission: 2026-02-20 19:23:09

cat: not the pet, but the command!

Time of First Successful Submission: 2026-02-20 19:24:07

catting absolute paths

Time of First Successful Submission: 2026-02-20 19:24:34

more catting practice

Time of First Successful Submission: 2026-02-20 19:25:33

grepping for a needle in a haystack

Time of First Successful Submission: 2026-02-20 19:26:25

comparing files

Time of First Successful Submission: 2026-02-20 19:28:32

listing files

Time of First Successful Submission: 2026-02-20 19:31:30

touching files

Time of First Successful Submission: 2026-02-20 19:31:54

removing files

Time of First Successful Submission: 2026-02-20 19:32:18

moving files

Time of First Successful Submission: 2026-02-20 19:32:44

copying files

Time of First Successful Submission: 2026-02-20 19:34:13

hidden files

Time of First Successful Submission: 2026-02-20 19:34:51

An Epic Filesystem Quest

Time of First Successful Submission: 2026-02-20 19:37:24

making directories

Time of First Successful Submission: 2026-02-20 19:39:17

finding files

Time of First Successful Submission: 2026-02-20 19:42:29

linking files

Time of First Successful Submission: 2026-02-20 19:46:49

Learning From Documentation

Time of First Successful Submission: 2026-02-20 19:49:49

Learning Complex Usage

Time of First Successful Submission: 2026-02-20 19:51:45

Reading Manuals

Time of First Successful Submission: 2026-02-20 19:53:21

Searching Manuals

Time of First Successful Submission: 2026-02-20 19:55:45

Searching For Manuals

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

Helpful Programs

Time of First Successful Submission: 2026-02-20 20:09:17

Help for Builtins

Time of First Successful Submission: 2026-02-20 20:12:16

Matching with *

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

Matching with ?

Time of First Successful Submission: 2026-02-20 20:17:45

Matching with []

Time of First Successful Submission: 2026-02-20 20:19:44

Matching paths with []

Time of First Successful Submission: 2026-02-20 20:21:15

Multiple globs

Time of First Successful Submission: 2026-02-20 20:25:16

Mixing globs

Time of First Successful Submission: 2026-02-20 20:35:22

Exclusionary globbing

Time of First Successful Submission: 2026-02-20 20:45:14

Tab completion

Time of First Successful Submission: 2026-02-20 20:46:57

Multiple options for tab completion

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

Tab completion on commands

Time of First Successful Submission: 2026-02-20 20:48:44

Redirecting output

Time of First Successful Submission: 2026-02-23 16:10:32

Redirecting more output

Time of First Successful Submission: 2026-02-23 16:11:43

Appending output

Time of First Successful Submission: 2026-02-23 16:17:03

Redirecting errors

Time of First Successful Submission: 2026-02-23 16:18:16

Redirecting input

Time of First Successful Submission: 2026-02-23 16:21:39

Grepping stored results

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

Grepping live output

Time of First Successful Submission: 2026-02-23 16:53:18

Grepping errors

Time of First Successful Submission: 2026-02-23 17:07:41

Filtering with grep -v

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

Filtering with sed

Time of First Successful Submission: 2026-02-23 17:24:30

Duplicating piped data with tee

Time of First Successful Submission: 2026-02-23 17:28:12

Process substitution for input

Time of First Successful Submission: 2026-02-23 17:34:43

Writing to multiple programs

Time of First Successful Submission: 2026-02-23 17:40:01

Split-piping stderr and stdout

Time of First Successful Submission: 2026-02-23 17:48:43

Named pipes

Time of First Successful Submission: 2026-02-23 17:53:09

Printing Variables

Time of First Successful Submission: 2026-02-23 19:49:31

Setting Variables

Time of First Successful Submission: 2026-02-23 19:50:21

Multi-word Variables

Time of First Successful Submission: 2026-02-23 19:52:57

Exporting Variables

Time of First Successful Submission: 2026-02-23 19:55:04

Printing Exported Variables

Time of First Successful Submission: 2026-02-23 19:55:35

Storing Command Output

Time of First Successful Submission: 2026-02-23 19:56:55

Reading Input

Time of First Successful Submission: 2026-02-23 19:58:33

Reading Files

Time of First Successful Submission: 2026-02-23 20:00:26

Translating characters

Time of First Successful Submission: 2026-02-23 20:13:29

Deleting characters

Time of First Successful Submission: 2026-02-23 20:14:28

Deleting newlines

Time of First Successful Submission: 2026-02-23 20:17:32

Extracting the first lines with head

Time of First Successful Submission: 2026-02-23 20:18:02

Extracting specific sections of text

Time of First Successful Submission: 2026-02-23 20:47:10

Sorting data

Time of First Successful Submission: 2026-02-23 20:48:12

Listing Processes

Time of First Successful Submission: 2026-02-23 21:04:54

Killing Processes

Time of First Successful Submission: 2026-02-23 21:06:03

Interrupting Processes

Time of First Successful Submission: 2026-02-23 21:06:32

Killing Misbehaving Processes

Time of First Successful Submission: 2026-02-23 21:08:10

Suspending Processes

Time of First Successful Submission: 2026-02-23 21:08:46

Resuming Processes

Time of First Successful Submission: 2026-02-23 21:09:16

Backgrounding Processes

Time of First Successful Submission: 2026-02-23 21:10:51

Foregrounding Processes

Time of First Successful Submission: 2026-02-23 21:11:38

Starting Backgrounded Processes

Time of First Successful Submission: 2026-02-23 21:12:00

Process Exit Codes

Time of First Successful Submission: 2026-02-23 21:12:53

Becoming root with su

Time of First Successful Submission: 2026-02-23 21:15:08

Other users with su

Time of First Successful Submission: 2026-02-23 21:15:41

Cracking passwords

Time of First Successful Submission: 2026-02-23 21:20:01

Using sudo

Time of First Successful Submission: 2026-02-23 21:21:14

Changing File Ownership

Time of First Successful Submission: 2026-02-24 16:00:00

Groups and Files

Time of First Successful Submission: 2026-02-24 16:02:19

Fun With Groups Names

Time of First Successful Submission: 2026-02-24 16:03:05

Changing Permissions

Time of First Successful Submission: 2026-02-24 16:15:52

Executable Files

Time of First Successful Submission: 2026-02-24 16:17:42

Permission Tweaking Practice

Time of First Successful Submission: 2026-02-24 16:21:23

Permissions Setting Practice

Time of First Successful Submission: 2026-02-24 16:25:33

The SUID Bit

Time of First Successful Submission: 2026-02-24 16:28:29

Chaining with Semicolons

Time of First Successful Submission: 2026-02-24 16:29:43

Building on Success

Time of First Successful Submission: 2026-02-24 16:30:13

Handling Failure

Time of First Successful Submission: 2026-02-24 16:48:22

Your First Shell Script

Time of First Successful Submission: 2026-02-24 16:49:53

Redirecting Script Output

Time of First Successful Submission: 2026-02-24 16:52:40

Executable Shell Scripts

Time of First Successful Submission: 2026-02-24 16:53:31

Understanding Shebangs

Time of First Successful Submission: 2026-02-24 16:56:18

Scripting with Arguments

Time of First Successful Submission: 2026-02-24 17:12:27

Scripting with Conditionals

Time of First Successful Submission: 2026-02-24 17:32:58

Scripting with Default Cases

Time of First Successful Submission: 2026-02-24 17:34:50

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-02-24 17:36:56

Reading Shell Scripts

Time of First Successful Submission: 2026-02-24 17:38:30

Launching Screen

Time of First Successful Submission: 2026-02-24 17:43:26

Detaching and Attaching

Time of First Successful Submission: 2026-02-24 17:44:40

Finding Sessions

Time of First Successful Submission: 2026-02-24 17:46:07

Switching Windows

Time of First Successful Submission: 2026-02-24 17:47:36

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-02-24 17:49:05

Switching Windows (tmux)

Time of First Successful Submission: 2026-02-24 17:50:27

The PATH Variable

Time of First Successful Submission: 2026-02-24 17:54:39

Setting PATH

Time of First Successful Submission: 2026-02-24 17:56:33

Finding Commands

Time of First Successful Submission: 2026-02-24 17:58:39

Adding Commands

Time of First Successful Submission: 2026-02-24 18:10:40

Hijacking Commands

Time of First Successful Submission: 2026-02-24 18:14:55

Bashrc Backdoor

Time of First Successful Submission: 2026-02-24 18:28:21

Sniffing Input

Time of First Successful Submission: 2026-02-24 18:31:30

Overshared Directories

Time of First Successful Submission: 2026-02-24 18:35:19

Tricky Linking

Time of First Successful Submission: 2026-02-24 18:41:33

Sniffing Process Arguments

Time of First Successful Submission: 2026-02-24 18:42:34

Snooping on Configurations

Time of First Successful Submission: 2026-02-24 18:44:23

The Fork Bomb

Time of First Successful Submission: 2026-02-24 19:17:00

Disk-Space Doomsday

Time of First Successful Submission: 2026-02-24 19:18:31

rm -rf /

Time of First Successful Submission: 2026-02-24 19:21:49

Life after rm -rf /

Time of First Successful Submission: 2026-02-24 19:35:43

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-02-24 19:38:02


Computing 101

89 / 94 438 / 21532


Your First Register

Time of First Successful Submission: 2025-05-08 19:00:15

Your First Syscall

Time of First Successful Submission: 2025-05-08 19:03:12

Exit Codes

Time of First Successful Submission: 2025-05-08 19:04:37

Building Executables

Time of First Successful Submission: 2025-05-08 19:11:05

Moving Between Registers

Time of First Successful Submission: 2025-05-08 19:13:13

Loading From Memory

Time of First Successful Submission: 2025-05-08 19:43:18

More Loading Practice

Time of First Successful Submission: 2025-05-08 19:44:16

Dereferencing Pointers

Time of First Successful Submission: 2025-05-08 19:47:23

Dereferencing Yourself

Time of First Successful Submission: 2025-05-08 19:48:44

Dereferencing with Offsets

Time of First Successful Submission: 2025-05-08 19:50:56

Stored Addresses

Time of First Successful Submission: 2025-05-08 21:23:14

Double Dereference

Time of First Successful Submission: 2025-05-08 21:27:13

The Stack

Time of First Successful Submission: 2026-02-24 20:37:21

Stack Offsets

Time of First Successful Submission: 2026-02-24 20:39:22

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-24 20:41:33

Popping From the Stack

Time of First Successful Submission: 2026-02-24 20:43:27

Disassembling Programs

Time of First Successful Submission: 2026-02-24 21:17:01

Tracing Syscalls

Time of First Successful Submission: 2025-05-08 19:16:28

Starting GDB

Time of First Successful Submission: 2025-05-08 19:17:32

Quitting GDB

Time of First Successful Submission: 2026-02-24 21:20:42

Starting Programs in GDB

Time of First Successful Submission: 2025-05-08 19:18:32

Disassembling in GDB

Time of First Successful Submission: 2026-02-24 21:26:04

Stepping Through Instructions

Time of First Successful Submission: 2026-02-24 21:27:52

Reading Register Values

Time of First Successful Submission: 2026-02-25 16:34:46

Popping Stack Values

Time of First Successful Submission: 2026-02-25 16:36:37

Examining Memory

Time of First Successful Submission: 2026-02-25 16:40:30

Examining Stack Pointers

Time of First Successful Submission: 2026-02-25 16:42:45

Cooperative Debugging

Time of First Successful Submission: 2026-02-25 16:49:02

Writing Output

Time of First Successful Submission: 2025-05-08 21:41:18

Chaining Syscalls

Time of First Successful Submission: 2025-05-08 21:43:04

Writing Strings

Time of First Successful Submission: 2025-05-08 21:45:55

Reading Data

Time of First Successful Submission: 2025-05-08 21:52:59

Opening Files

Time of First Successful Submission: 2026-02-25 17:19:56

Hardcoding the Filename

Time of First Successful Submission: 2026-02-25 17:26:34

Comparing Values

Time of First Successful Submission: 2026-02-25 17:59:58

Comparing Characters

Time of First Successful Submission: 2026-02-25 18:06:24

Conditional Control Flow

Time of First Successful Submission: 2026-02-25 18:13:37

Comparing Strings

Time of First Successful Submission: 2026-02-25 18:29:11

Reverse the Password

Time of First Successful Submission: 2026-02-25 18:41:19

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-25 19:11:10

Looping

Time of First Successful Submission: 2026-02-25 19:17:58

Reverse the Calculation

Time of First Successful Submission: 2026-02-25 19:34:48

Reverse the Reverse

Time of First Successful Submission: 2026-02-25 19:50:36

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-25 19:52:32

Loops on Data

Time of First Successful Submission: 2026-02-25 19:53:58

set-register

Time of First Successful Submission: 2025-05-12 19:36:17

set-multiple-registers

Time of First Successful Submission: 2025-05-12 19:38:05

add-to-register

Time of First Successful Submission: 2025-05-12 19:43:39

linear-equation-registers

Time of First Successful Submission: 2025-05-12 21:32:43

integer-division

Time of First Successful Submission: 2025-05-12 21:37:15

modulo-operation

Time of First Successful Submission: 2025-05-12 21:44:42

set-upper-byte

Time of First Successful Submission: 2025-05-12 21:46:34

efficient-modulo

Time of First Successful Submission: 2025-05-12 21:58:32

byte-extraction

Time of First Successful Submission: 2025-05-13 18:12:56

bitwise-and

Time of First Successful Submission: 2025-05-13 18:18:35

check-even

Time of First Successful Submission: 2025-05-13 18:34:56

memory-read

Time of First Successful Submission: 2025-05-13 18:41:35

memory-write

Time of First Successful Submission: 2025-05-13 18:43:41

memory-increment

Time of First Successful Submission: 2025-05-13 18:46:28

byte-access

Time of First Successful Submission: 2025-05-13 18:49:08

memory-size-access

Time of First Successful Submission: 2025-05-13 18:52:00

little-endian-write

Time of First Successful Submission: 2025-05-13 18:55:09

memory-sum

Time of First Successful Submission: 2025-05-13 19:02:40

stack-subtraction

Time of First Successful Submission: 2025-05-13 19:07:18

swap-stack-values

Time of First Successful Submission: 2025-05-13 19:10:13

average-stack-values

Time of First Successful Submission: 2025-05-13 19:25:32

absolute-jump

Time of First Successful Submission: 2025-05-13 19:48:50

relative-jump

Time of First Successful Submission: 2025-05-13 20:00:03

jump-trampoline

Time of First Successful Submission: 2025-05-13 20:04:16

conditional-jump

Time of First Successful Submission: 2025-05-13 20:37:09

indirect-jump

Time of First Successful Submission: 2025-05-13 21:04:35

average-loop

Time of First Successful Submission: 2025-05-13 21:12:05

count-non-zero

Time of First Successful Submission: 2025-05-13 21:27:23

string-lower

Time of First Successful Submission: 2025-05-16 17:06:34

most-common-byte

Time of First Successful Submission: 2026-02-27 15:32:40

Exit

Time of First Successful Submission: 2025-05-21 18:34:36

Socket

Time of First Successful Submission: 2025-05-21 18:39:51

Bind

Time of First Successful Submission: 2025-05-21 19:10:13

Listen

Time of First Successful Submission: 2025-05-21 19:27:53

Accept

Time of First Successful Submission: 2025-05-21 19:41:04

Static Response

Time of First Successful Submission: 2025-05-21 20:29:04

Debugging Programs

Time of First Successful Submission: 2025-05-19 18:52:43

Inspecting Registers

Time of First Successful Submission: 2025-05-19 18:56:46

Examining Memory

Time of First Successful Submission: 2025-05-19 19:19:35

Setting Breakpoints

Time of First Successful Submission: 2025-05-19 19:56:03

GDB Scripting

Time of First Successful Submission: 2025-05-19 20:22:56

Modifying Data

Time of First Successful Submission: 2025-05-19 20:41:10

Modifying Execution

Time of First Successful Submission: 2025-05-19 20:42:08

Broken Functions

Time of First Successful Submission: 2025-05-21 18:25:47


Playing With Programs

116 / 116 784 / 23382


What's the password?

Time of First Successful Submission: 2026-02-20 17:43:24

... and again!

Time of First Successful Submission: 2026-02-20 17:44:12

Newline Troubles

Time of First Successful Submission: 2026-02-20 17:47:26

Reasoning about files

Time of First Successful Submission: 2026-02-20 17:50:00

Specifying Filenames

Time of First Successful Submission: 2026-02-20 17:50:47

Binary and Hex Encoding

Time of First Successful Submission: 2026-02-27 20:49:55

More Hex

Time of First Successful Submission: 2026-02-27 20:52:16

Decoding Hex

Time of First Successful Submission: 2026-02-27 20:54:49

Decoding Practice

Time of First Successful Submission: 2026-02-27 21:01:44

Encoding Practice

Time of First Successful Submission: 2026-02-27 21:04:08

Hex-encoding ASCII

Time of First Successful Submission: 2026-02-27 21:21:53

Nested Encoding

Time of First Successful Submission: 2026-02-27 21:24:44

Hex-encoding UTF-8

Time of First Successful Submission: 2026-02-28 19:14:05

UTF Mixups

Time of First Successful Submission: 2026-02-28 19:21:12

Modifying Encoded Data

Time of First Successful Submission: 2026-02-28 19:56:37

Decoding Base64

Time of First Successful Submission: 2026-02-28 19:53:31

Encoding Base64

Time of First Successful Submission: 2026-02-28 19:58:48

Dealing with Obfuscation

Time of First Successful Submission: 2026-02-28 20:04:15

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-03-03 16:45:07

Your First HTTP Request

Time of First Successful Submission: 2026-03-01 19:29:43

Reading Flask

Time of First Successful Submission: 2026-03-01 19:30:58

Commented Data

Time of First Successful Submission: 2026-03-01 19:38:26

HTTP Metadata

Time of First Successful Submission: 2026-03-01 19:39:54

HTTP (netcat)

Time of First Successful Submission: 2026-03-01 19:42:18

HTTP Paths (netcat)

Time of First Successful Submission: 2026-03-01 19:42:57

HTTP (curl)

Time of First Successful Submission: 2026-03-01 19:43:37

HTTP (python)

Time of First Successful Submission: 2026-03-01 19:46:53

HTTP Host Header (python)

Time of First Successful Submission: 2026-03-01 19:49:01

HTTP Host Header (curl)

Time of First Successful Submission: 2026-03-01 19:49:57

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-03-01 19:54:21

URL Encoding (netcat)

Time of First Successful Submission: 2026-03-01 20:02:38

HTTP GET Parameters

Time of First Successful Submission: 2026-03-01 20:03:37

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-03-01 20:05:06

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-03-02 15:39:43

HTTP Forms

Time of First Successful Submission: 2026-03-02 15:41:25

HTTP Forms (curl)

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

HTTP Forms (netcat)

Time of First Successful Submission: 2026-03-02 15:56:46

HTTP Forms (python)

Time of First Successful Submission: 2026-03-02 16:17:34

HTTP Forms Without Forms

Time of First Successful Submission: 2026-03-02 16:21:44

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-03-02 16:51:18

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-03-02 16:55:12

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-03-02 17:09:14

HTTP Redirects (curl)

Time of First Successful Submission: 2026-03-02 17:09:53

HTTP Redirects (python)

Time of First Successful Submission: 2026-03-02 17:12:23

HTTP Cookies (curl)

Time of First Successful Submission: 2026-03-02 17:14:33

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-03-02 17:25:29

HTTP Cookies (python)

Time of First Successful Submission: 2026-03-02 17:26:22

Server State (python)

Time of First Successful Submission: 2026-03-02 17:27:37

Listening Web

Time of First Successful Submission: 2026-03-02 17:41:22

Speaking Redirects

Time of First Successful Submission: 2026-03-02 17:44:53

JavaScript Redirects

Time of First Successful Submission: 2026-03-02 17:52:06

Including JavaScript

Time of First Successful Submission: 2026-03-02 18:03:48

HTTP (javascript)

Time of First Successful Submission: 2026-03-02 18:14:52

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-03-02 18:16:34

HTTP Forms (javascript)

Time of First Successful Submission: 2026-03-02 18:22:19

cat

Time of First Successful Submission: 2026-03-02 18:23:17

more

Time of First Successful Submission: 2026-03-02 18:23:45

less

Time of First Successful Submission: 2026-03-02 18:38:46

tail

Time of First Successful Submission: 2026-03-02 18:39:07

head

Time of First Successful Submission: 2026-03-02 18:39:30

sort

Time of First Successful Submission: 2026-03-02 18:40:06

vim

Time of First Successful Submission: 2026-03-02 18:42:05

emacs

Time of First Successful Submission: 2026-03-02 18:42:24

nano

Time of First Successful Submission: 2026-03-02 18:42:46

rev

Time of First Successful Submission: 2026-03-02 18:43:16

od

Time of First Successful Submission: 2026-03-02 18:53:35

hd

Time of First Successful Submission: 2026-03-02 19:19:32

xxd

Time of First Successful Submission: 2026-03-02 19:20:45

base32

Time of First Successful Submission: 2026-03-02 19:21:12

base64

Time of First Successful Submission: 2026-03-02 19:21:39

split

Time of First Successful Submission: 2026-03-02 19:24:41

gzip

Time of First Successful Submission: 2026-03-02 19:30:08

bzip2

Time of First Successful Submission: 2026-03-02 19:30:51

zip

Time of First Successful Submission: 2026-03-02 19:37:08

tar

Time of First Successful Submission: 2026-03-02 19:39:09

ar

Time of First Successful Submission: 2026-03-02 19:45:35

cpio

Time of First Successful Submission: 2026-03-02 20:05:09

genisoimage

Time of First Successful Submission: 2026-03-02 20:13:51

env

Time of First Successful Submission: 2026-03-02 20:19:12

find

Time of First Successful Submission: 2026-03-02 20:34:09

make

Time of First Successful Submission: 2026-03-02 20:38:57

nice

Time of First Successful Submission: 2026-03-02 20:40:43

timeout

Time of First Successful Submission: 2026-03-02 20:46:11

stdbuf

Time of First Successful Submission: 2026-03-02 20:46:38

setarch

Time of First Successful Submission: 2026-03-02 20:55:02

watch

Time of First Successful Submission: 2026-03-02 20:56:35

socat

Time of First Successful Submission: 2026-03-02 20:57:19

whiptail

Time of First Successful Submission: 2026-03-02 21:00:31

awk

Time of First Successful Submission: 2026-03-02 21:01:10

sed

Time of First Successful Submission: 2026-03-02 21:01:48

ed

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

chown

Time of First Successful Submission: 2026-03-02 21:02:41

chmod

Time of First Successful Submission: 2026-03-02 21:03:04

cp

Time of First Successful Submission: 2026-03-02 21:03:27

mv

Time of First Successful Submission: 2026-03-02 21:07:23

perl

Time of First Successful Submission: 2026-03-02 21:07:54

python

Time of First Successful Submission: 2026-03-02 21:08:23

ruby

Time of First Successful Submission: 2026-03-02 21:10:25

bash

Time of First Successful Submission: 2026-03-02 21:13:25

date

Time of First Successful Submission: 2026-03-02 21:13:44

dmesg

Time of First Successful Submission: 2026-03-02 21:14:07

wc

Time of First Successful Submission: 2026-03-02 21:17:21

gcc

Time of First Successful Submission: 2026-03-02 21:19:09

as

Time of First Successful Submission: 2026-03-02 21:19:28

wget

Time of First Successful Submission: 2026-03-03 14:57:04

ssh-keygen

Time of First Successful Submission: 2026-03-03 15:09:57

SQL Queries

Time of First Successful Submission: 2026-03-03 15:14:58

Filtering SQL

Time of First Successful Submission: 2026-03-03 15:16:48

Choosing Columns

Time of First Successful Submission: 2026-03-03 15:18:21

Exclusionary Filtering

Time of First Successful Submission: 2026-03-03 15:21:17

Filtering Strings

Time of First Successful Submission: 2026-03-03 15:50:00

Filtering on Expressions

Time of First Successful Submission: 2026-03-03 15:54:58

SELECTing Expressions

Time of First Successful Submission: 2026-03-03 16:07:09

Composite Conditions

Time of First Successful Submission: 2026-03-03 16:13:23

Reaching Your LIMITs

Time of First Successful Submission: 2026-03-03 16:15:51

Querying Metadata

Time of First Successful Submission: 2026-03-03 16:19:19


GCA CTF

11 / 104 8388 / 43631


Using the Terminal

Time of First Successful Submission: 2026-02-20 18:40:36

Using the VSCode Workspace

Time of First Successful Submission: 2025-05-07 14:11:02

Using the GUI Desktop

Time of First Successful Submission: 2025-05-07 14:13:05

Pasting into the Desktop

Time of First Successful Submission: 2025-05-07 14:14:19

Restarting Challenges

Time of First Successful Submission: 2025-05-07 14:16:03

Getting Help

Time of First Successful Submission: 2025-05-07 14:18:22

Challenge Programs

Time of First Successful Submission: 2025-05-07 14:19:33

The Flag File

Time of First Successful Submission: 2025-05-07 14:20:51

Using Privileged Mode

Time of First Successful Submission: 2025-05-07 14:22:56

Persistent Home Directories - One

Time of First Successful Submission: 2025-05-07 14:27:00

Persistent Home Directories - Two

Time of First Successful Submission: 2025-05-07 14:27:35


Pwntools Tutorials

10 / 12 494 / 1220


Level 0.0

Time of First Successful Submission: 2026-03-04 19:47:08

Level 1.0

Time of First Successful Submission: 2026-03-04 19:55:59

Level 1.1

Time of First Successful Submission: 2026-03-04 20:24:14

Level 2.0

Time of First Successful Submission: 2026-03-04 20:27:35

Level 2.1

Time of First Successful Submission: 2026-03-04 20:38:45

Level 2.2

Time of First Successful Submission: 2026-03-04 20:43:26

Level 2.3

Time of First Successful Submission: 2026-03-04 20:46:20

Level 2.4

Time of First Successful Submission: 2026-03-04 20:48:11

Level 2.5

Time of First Successful Submission: 2026-03-04 20:52:01

Level 2.6

Time of First Successful Submission: 2026-03-04 20:55:16