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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-12 22:32:45

Command Arguments

Time of First Successful Submission: 2026-01-12 22:33:48

Command History

Time of First Successful Submission: 2026-01-12 22:34:23

The Root Path

Time of First Successful Submission: 2026-01-12 22:46:29

Absolute Paths

Time of First Successful Submission: 2026-01-12 22:47:19

Changing position

Time of First Successful Submission: 2026-01-12 22:49:15

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-12 22:50:48

Relative Paths

Time of First Successful Submission: 2026-01-12 22:52:00

Cat

Time of First Successful Submission: 2026-01-12 23:35:20

Ls

Time of First Successful Submission: 2026-01-12 23:44:17

Ls All

Time of First Successful Submission: 2026-01-12 23:56:04

Find

Time of First Successful Submission: 2026-01-13 00:54:44

Piping Echo

Time of First Successful Submission: 2026-01-13 20:02:34

Piping Stdout

Time of First Successful Submission: 2026-01-13 20:04:02

Piping Stdin

Time of First Successful Submission: 2026-01-13 20:08:32


Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2026-02-03 17:56:17

Path Traversal 2

Time of First Successful Submission: 2026-02-03 21:52:51

CMDi 1

Time of First Successful Submission: 2026-02-05 00:47:26

CMDi 2

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

CMDi 3

Time of First Successful Submission: 2026-02-05 01:18:40

CMDi 4

Time of First Successful Submission: 2026-02-05 01:28:01

CMDi 5

Time of First Successful Submission: 2026-02-05 02:17:04

CMDi 6

Time of First Successful Submission: 2026-03-27 20:57:43

Authentication Bypass 1

Time of First Successful Submission: 2026-02-05 15:48:16

Authentication Bypass 2

Time of First Successful Submission: 2026-02-05 15:59:03

SQLi 1

Time of First Successful Submission: 2026-02-05 16:15:26

SQLi 2

Time of First Successful Submission: 2026-02-05 16:34:16

SQLi 3

Time of First Successful Submission: 2026-02-05 16:54:15

SQLi 4

Time of First Successful Submission: 2026-02-05 17:08:07

SQLi 5

Time of First Successful Submission: 2026-02-06 18:13:37

XSS 1

Time of First Successful Submission: 2026-02-10 17:45:44

XSS 2

Time of First Successful Submission: 2026-02-10 20:32:23

XSS 3

Time of First Successful Submission: 2026-02-10 20:59:02

XSS 4

Time of First Successful Submission: 2026-02-10 21:03:07

XSS 5

Time of First Successful Submission: 2026-02-10 21:54:46

XSS 6

Time of First Successful Submission: 2026-02-12 16:43:20

XSS 7

Time of First Successful Submission: 2026-02-12 18:53:44

CSRF 1

Time of First Successful Submission: 2026-02-12 22:52:29

CSRF 2

Time of First Successful Submission: 2026-02-13 18:33:15

CSRF 3

Time of First Successful Submission: 2026-02-13 19:33:06

CSRF 4

Time of First Successful Submission: 2026-02-13 19:54:26

CSRF 5

Time of First Successful Submission: 2026-02-15 06:12:00

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-05 18:07:17

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-05 19:03:57

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-05 19:42:54

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-05 22:20:44

Reading Endianness (C)

Time of First Successful Submission: 2026-03-05 22:57:33

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-05 23:21:56

Version Information (Python)

Time of First Successful Submission: 2026-03-06 04:45:34

Version Information (C)

Time of First Successful Submission: 2026-03-06 04:47:42

Version Information (x86)

Time of First Successful Submission: 2026-03-07 04:17:15

Metadata and Data (Python)

Time of First Successful Submission: 2026-03-07 04:35:19

Metadata and Data (C)

Time of First Successful Submission: 2026-03-07 05:11:09

Metadata and Data (x86)

Time of First Successful Submission: 2026-03-07 05:53:57

Input Restrictions (Python)

Time of First Successful Submission: 2026-03-07 06:05:41

Input Restrictions (C)

Time of First Successful Submission: 2026-03-07 06:11:14

Input Restrictions (x86)

Time of First Successful Submission: 2026-03-07 06:27:55

Behold the cIMG! (Python)

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

Behold the cIMG! (C)

Time of First Successful Submission: 2026-03-08 05:47:26

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-03-08 07:04:21

A Basic cIMG (Python)

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A Basic cIMG (C)

Time of First Successful Submission: 2026-03-08 07:27:36

A Basic cIMG (x86)

Time of First Successful Submission: 2026-03-08 07:48:55

Internal State Mini (C)

Time of First Successful Submission: 2026-03-12 03:45:35

Internal State Mini (x86)

Time of First Successful Submission: 2026-03-12 04:02:15

Internal State (C)

Time of First Successful Submission: 2026-03-13 04:37:24

Internal State (x86)

Time of First Successful Submission: 2026-03-14 00:25:42

File Formats: Directives (C)

Time of First Successful Submission: 2026-03-14 05:49:45

File Formats: Directives (x86)

Time of First Successful Submission: 2026-03-17 20:00:35

The Patch Directive

Time of First Successful Submission: 2026-03-20 15:12:00

Optimizing for Space

Time of First Successful Submission: 2026-03-20 19:45:10

Tweaking Images

Time of First Successful Submission: 2026-03-21 04:02:45

Storage and Retrieval

Time of First Successful Submission: 2026-03-22 06:37:40

Extracting Knowledge

Time of First Successful Submission: 2026-03-22 09:07:06

Advanced Sprites

Time of First Successful Submission: 2026-03-23 03:46:04

Accessing Resources

Time of First Successful Submission: 2026-03-23 04:59:41

Unsafe Animations

Time of First Successful Submission: 2026-03-23 05:55:32

Animations

Time of First Successful Submission: 2026-03-23 07:56:39

Interoperability: Patching Data

Time of First Successful Submission: 2026-03-24 01:06:37

Patching Code

Time of First Successful Submission: 2026-03-24 01:43:46

Patching Control Flow

Time of First Successful Submission: 2026-03-24 02:24:13

Your First Overflow (easy)

Time of First Successful Submission: 2026-03-27 01:34:46

Your First Overflow (hard)

Time of First Successful Submission: 2026-03-27 01:35:56

Precision (easy)

Time of First Successful Submission: 2026-03-27 01:58:28

Precision (hard)

Time of First Successful Submission: 2026-03-27 16:27:03

Variable Control (easy)

Time of First Successful Submission: 2026-03-27 16:43:01

Variable Control (hard)

Time of First Successful Submission: 2026-03-27 17:41:11

Control Hijack (easy)

Time of First Successful Submission: 2026-03-27 18:25:46

Control Hijack (hard)

Time of First Successful Submission: 2026-03-27 19:11:01

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-03-27 19:23:55

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-03-27 19:37:30

PIEs (easy)

Time of First Successful Submission: 2026-03-28 00:52:04

PIEs (hard)

Time of First Successful Submission: 2026-03-28 01:04:21

String Lengths (easy)

Time of First Successful Submission: 2026-03-28 06:59:24

String Lengths (hard)

Time of First Successful Submission: 2026-03-28 09:16:38

Basic Shellcode

Time of First Successful Submission: 2026-03-30 05:35:21

NOP Sleds

Time of First Successful Submission: 2026-03-30 05:48:33

NULL-Free Shellcode

Time of First Successful Submission: 2026-03-30 06:35:15

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2026-03-31 01:09:09

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2026-03-31 05:37:20

Hijack to Shellcode (easy)

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

Hijack to Shellcode (hard)

Time of First Successful Submission: 2026-03-31 06:29:32


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-12 22:11:23

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-12 22:13:02

Using the GUI Desktop

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

Pasting into the Desktop

Time of First Successful Submission: 2026-01-12 22:18:56

Restarting Challenges

Time of First Successful Submission: 2026-01-12 22:21:10


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-12 22:32:45

Intro to Arguments

Time of First Successful Submission: 2026-01-12 22:33:48

Command History

Time of First Successful Submission: 2026-01-12 22:34:23

The Root

Time of First Successful Submission: 2026-01-12 22:46:29

Program and absolute paths

Time of First Successful Submission: 2026-01-12 22:47:19

Position thy self

Time of First Successful Submission: 2026-01-12 22:49:15

Position elsewhere

Time of First Successful Submission: 2026-01-12 22:50:48

implicit relative paths, from /

Time of First Successful Submission: 2026-01-12 22:52:00

explicit relative paths, from /

Time of First Successful Submission: 2026-01-12 22:53:28

implicit relative path

Time of First Successful Submission: 2026-01-12 22:55:11

home sweet home

Time of First Successful Submission: 2026-01-12 23:34:17

cat: not the pet, but the command!

Time of First Successful Submission: 2026-01-12 23:35:20

catting absolute paths

Time of First Successful Submission: 2026-01-12 23:35:53

more catting practice

Time of First Successful Submission: 2026-01-12 23:37:00

grepping for a needle in a haystack

Time of First Successful Submission: 2026-01-12 23:38:08

comparing files

Time of First Successful Submission: 2026-01-12 23:43:25

listing files

Time of First Successful Submission: 2026-01-12 23:44:17

touching files

Time of First Successful Submission: 2026-01-12 23:44:51

removing files

Time of First Successful Submission: 2026-01-12 23:48:24

moving files

Time of First Successful Submission: 2026-01-12 23:50:49

copying files

Time of First Successful Submission: 2026-01-12 23:51:18

hidden files

Time of First Successful Submission: 2026-01-12 23:56:04

An Epic Filesystem Quest

Time of First Successful Submission: 2026-01-13 00:03:47

making directories

Time of First Successful Submission: 2026-01-13 00:07:15

finding files

Time of First Successful Submission: 2026-01-13 00:54:44

linking files

Time of First Successful Submission: 2026-01-13 01:23:44

Learning From Documentation

Time of First Successful Submission: 2026-01-13 01:53:10

Learning Complex Usage

Time of First Successful Submission: 2026-01-13 02:04:47

Reading Manuals

Time of First Successful Submission: 2026-01-13 02:07:37

Searching Manuals

Time of First Successful Submission: 2026-01-13 02:09:11

Searching For Manuals

Time of First Successful Submission: 2026-01-13 02:21:45

Helpful Programs

Time of First Successful Submission: 2026-01-13 02:26:07

Help for Builtins

Time of First Successful Submission: 2026-01-13 02:28:45

Matching with *

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Matching with ?

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Matching with []

Time of First Successful Submission: 2026-01-13 02:36:24

Matching paths with []

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Multiple globs

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Mixing globs

Time of First Successful Submission: 2026-01-13 02:44:54

Exclusionary globbing

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Tab completion

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Multiple options for tab completion

Time of First Successful Submission: 2026-01-13 02:50:18

Tab completion on commands

Time of First Successful Submission: 2026-01-13 02:51:39

Redirecting output

Time of First Successful Submission: 2026-01-13 20:02:34

Redirecting more output

Time of First Successful Submission: 2026-01-13 20:04:02

Appending output

Time of First Successful Submission: 2026-01-13 20:05:31

Redirecting errors

Time of First Successful Submission: 2026-01-13 20:07:25

Redirecting input

Time of First Successful Submission: 2026-01-13 20:08:32

Grepping stored results

Time of First Successful Submission: 2026-01-13 20:23:26

Grepping live output

Time of First Successful Submission: 2026-01-13 20:25:33

Grepping errors

Time of First Successful Submission: 2026-01-13 20:43:09

Filtering with grep -v

Time of First Successful Submission: 2026-01-13 20:44:58

Filtering with sed

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Duplicating piped data with tee

Time of First Successful Submission: 2026-01-13 20:57:26

Process substitution for input

Time of First Successful Submission: 2026-01-13 21:04:53

Writing to multiple programs

Time of First Successful Submission: 2026-01-13 21:12:37

Split-piping stderr and stdout

Time of First Successful Submission: 2026-01-13 21:20:03

Named pipes

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Printing Variables

Time of First Successful Submission: 2026-01-13 21:50:21

Setting Variables

Time of First Successful Submission: 2026-01-13 21:51:32

Multi-word Variables

Time of First Successful Submission: 2026-01-13 21:52:12

Exporting Variables

Time of First Successful Submission: 2026-01-13 21:55:13

Printing Exported Variables

Time of First Successful Submission: 2026-01-13 21:57:19

Storing Command Output

Time of First Successful Submission: 2026-01-13 21:58:49

Reading Input

Time of First Successful Submission: 2026-01-13 22:03:31

Reading Files

Time of First Successful Submission: 2026-01-13 22:08:40

Translating characters

Time of First Successful Submission: 2026-01-13 22:12:27

Deleting characters

Time of First Successful Submission: 2026-01-13 22:15:04

Deleting newlines

Time of First Successful Submission: 2026-01-13 22:17:38

Extracting the first lines with head

Time of First Successful Submission: 2026-01-13 22:18:48

Extracting specific sections of text

Time of First Successful Submission: 2026-01-13 22:22:00

Sorting data

Time of First Successful Submission: 2026-01-13 22:25:43

Listing Processes

Time of First Successful Submission: 2026-01-13 22:29:11

Killing Processes

Time of First Successful Submission: 2026-01-13 22:30:17

Interrupting Processes

Time of First Successful Submission: 2026-01-13 22:30:52

Killing Misbehaving Processes

Time of First Successful Submission: 2026-01-13 22:33:43

Suspending Processes

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Resuming Processes

Time of First Successful Submission: 2026-01-13 22:35:35

Backgrounding Processes

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Foregrounding Processes

Time of First Successful Submission: 2026-01-14 19:10:05

Starting Backgrounded Processes

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Process Exit Codes

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Becoming root with su

Time of First Successful Submission: 2026-01-14 04:22:53

Other users with su

Time of First Successful Submission: 2026-01-14 04:23:41

Cracking passwords

Time of First Successful Submission: 2026-01-14 04:26:53

Using sudo

Time of First Successful Submission: 2026-01-14 04:28:36

Changing File Ownership

Time of First Successful Submission: 2026-01-15 15:22:40

Groups and Files

Time of First Successful Submission: 2026-01-15 15:27:53

Fun With Groups Names

Time of First Successful Submission: 2026-01-15 15:29:38

Changing Permissions

Time of First Successful Submission: 2026-01-15 15:34:03

Executable Files

Time of First Successful Submission: 2026-01-15 15:34:41

Permission Tweaking Practice

Time of First Successful Submission: 2026-01-15 15:39:18

Permissions Setting Practice

Time of First Successful Submission: 2026-01-15 15:42:23

The SUID Bit

Time of First Successful Submission: 2026-01-15 15:46:14

Chaining with Semicolons

Time of First Successful Submission: 2026-01-15 02:15:12

Building on Success

Time of First Successful Submission: 2026-01-15 02:16:07

Handling Failure

Time of First Successful Submission: 2026-01-15 02:16:54

Your First Shell Script

Time of First Successful Submission: 2026-01-15 02:20:00

Redirecting Script Output

Time of First Successful Submission: 2026-01-15 02:21:33

Executable Shell Scripts

Time of First Successful Submission: 2026-01-15 02:23:34

Understanding Shebangs

Time of First Successful Submission: 2026-01-15 02:35:22

Scripting with Arguments

Time of First Successful Submission: 2026-01-15 02:39:11

Scripting with Conditionals

Time of First Successful Submission: 2026-01-15 02:44:03

Scripting with Default Cases

Time of First Successful Submission: 2026-01-15 02:46:03

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-15 02:48:54

Reading Shell Scripts

Time of First Successful Submission: 2026-01-15 02:51:12

Launching Screen

Time of First Successful Submission: 2026-01-15 02:52:09

Detaching and Attaching

Time of First Successful Submission: 2026-01-15 02:54:23

Finding Sessions

Time of First Successful Submission: 2026-01-15 02:55:51

Switching Windows

Time of First Successful Submission: 2026-01-15 02:57:22

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-15 02:58:15

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-15 02:59:08

The PATH Variable

Time of First Successful Submission: 2026-01-15 15:52:36

Setting PATH

Time of First Successful Submission: 2026-01-15 15:56:18

Finding Commands

Time of First Successful Submission: 2026-01-15 15:57:53

Adding Commands

Time of First Successful Submission: 2026-01-15 17:32:13

Hijacking Commands

Time of First Successful Submission: 2026-01-15 18:26:33

Bashrc Backdoor

Time of First Successful Submission: 2026-01-15 18:29:44

Sniffing Input

Time of First Successful Submission: 2026-01-15 18:43:02

Overshared Directories

Time of First Successful Submission: 2026-01-15 18:48:54

Tricky Linking

Time of First Successful Submission: 2026-01-15 19:16:28

Sniffing Process Arguments

Time of First Successful Submission: 2026-01-15 19:22:38

Snooping on Configurations

Time of First Successful Submission: 2026-01-15 19:24:38

The Fork Bomb

Time of First Successful Submission: 2026-01-15 19:39:18

Disk-Space Doomsday

Time of First Successful Submission: 2026-01-15 19:45:15

rm -rf /

Time of First Successful Submission: 2026-01-15 19:48:23

Life after rm -rf /

Time of First Successful Submission: 2026-01-15 19:55:45

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-01-15 20:12:53


Computing 101

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Your First Register

Time of First Successful Submission: 2026-02-20 15:58:58

Your First Syscall

Time of First Successful Submission: 2026-02-20 16:05:29

Exit Codes

Time of First Successful Submission: 2026-02-20 16:07:47

Building Executables

Time of First Successful Submission: 2026-02-20 16:15:44

Moving Between Registers

Time of First Successful Submission: 2026-02-20 16:21:09

Loading From Memory

Time of First Successful Submission: 2026-02-20 16:26:20

More Loading Practice

Time of First Successful Submission: 2026-02-20 16:27:10

Dereferencing Pointers

Time of First Successful Submission: 2026-02-20 16:35:54

Dereferencing Yourself

Time of First Successful Submission: 2026-02-20 16:37:03

Dereferencing with Offsets

Time of First Successful Submission: 2026-02-20 16:38:24

Stored Addresses

Time of First Successful Submission: 2026-02-20 16:40:57

Double Dereference

Time of First Successful Submission: 2026-02-20 16:44:55

The Stack

Time of First Successful Submission: 2026-02-20 16:49:40

Stack Offsets

Time of First Successful Submission: 2026-02-20 16:51:20

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-20 16:57:08

Popping From the Stack

Time of First Successful Submission: 2026-02-20 17:03:56

Disassembling Programs

Time of First Successful Submission: 2026-02-20 17:09:36

Tracing Syscalls

Time of First Successful Submission: 2026-02-20 17:38:47

Starting GDB

Time of First Successful Submission: 2026-02-20 17:40:03

Quitting GDB

Time of First Successful Submission: 2026-02-20 17:40:36

Starting Programs in GDB

Time of First Successful Submission: 2026-02-20 17:41:59

Disassembling in GDB

Time of First Successful Submission: 2026-02-20 17:42:51

Stepping Through Instructions

Time of First Successful Submission: 2026-02-20 17:45:22

Reading Register Values

Time of First Successful Submission: 2026-02-20 17:46:29

Popping Stack Values

Time of First Successful Submission: 2026-02-20 17:47:55

Examining Memory

Time of First Successful Submission: 2026-02-20 17:49:10

Examining Stack Pointers

Time of First Successful Submission: 2026-02-20 17:59:56

Cooperative Debugging

Time of First Successful Submission: 2026-02-20 18:04:15

Writing Output

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

Chaining Syscalls

Time of First Successful Submission: 2026-02-20 19:24:49

Writing Strings

Time of First Successful Submission: 2026-02-20 19:25:43

Reading Data

Time of First Successful Submission: 2026-02-20 19:57:09

Opening Files

Time of First Successful Submission: 2026-02-20 22:02:25

Hardcoding the Filename

Time of First Successful Submission: 2026-02-20 22:14:35

Comparing Values

Time of First Successful Submission: 2026-02-20 22:29:12

Comparing Characters

Time of First Successful Submission: 2026-02-20 23:07:30

Conditional Control Flow

Time of First Successful Submission: 2026-02-20 23:21:22

Comparing Strings

Time of First Successful Submission: 2026-02-20 23:32:24

Reverse the Password

Time of First Successful Submission: 2026-02-20 23:36:04

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-21 01:23:31

Looping

Time of First Successful Submission: 2026-02-21 01:52:49

Reverse the Calculation

Time of First Successful Submission: 2026-02-21 01:58:12

Reverse the Reverse

Time of First Successful Submission: 2026-02-22 01:34:59

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-22 01:53:00

Loops on Data

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

set-register

Time of First Successful Submission: 2026-02-22 02:08:44

set-multiple-registers

Time of First Successful Submission: 2026-02-22 02:10:26

add-to-register

Time of First Successful Submission: 2026-02-27 15:30:59

linear-equation-registers

Time of First Successful Submission: 2026-02-27 15:34:22

integer-division

Time of First Successful Submission: 2026-02-27 15:39:30

modulo-operation

Time of First Successful Submission: 2026-02-27 16:05:19

set-upper-byte

Time of First Successful Submission: 2026-02-27 16:07:05

efficient-modulo

Time of First Successful Submission: 2026-02-27 16:49:11

byte-extraction

Time of First Successful Submission: 2026-02-27 17:39:32

bitwise-and

Time of First Successful Submission: 2026-02-27 18:07:15

check-even

Time of First Successful Submission: 2026-02-27 18:47:19

memory-read

Time of First Successful Submission: 2026-03-01 01:12:11

memory-write

Time of First Successful Submission: 2026-03-01 01:16:27

memory-increment

Time of First Successful Submission: 2026-03-01 01:26:05

byte-access

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

memory-size-access

Time of First Successful Submission: 2026-03-01 01:47:19

little-endian-write

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

memory-sum

Time of First Successful Submission: 2026-03-01 02:13:27

stack-subtraction

Time of First Successful Submission: 2026-03-01 02:20:50

swap-stack-values

Time of First Successful Submission: 2026-03-01 02:22:01

average-stack-values

Time of First Successful Submission: 2026-03-01 03:14:06

absolute-jump

Time of First Successful Submission: 2026-03-01 04:39:02

relative-jump

Time of First Successful Submission: 2026-03-01 04:42:55

jump-trampoline

Time of First Successful Submission: 2026-03-01 04:47:01

conditional-jump

Time of First Successful Submission: 2026-03-01 10:00:33

indirect-jump

Time of First Successful Submission: 2026-03-01 10:21:25

average-loop

Time of First Successful Submission: 2026-03-01 10:30:26

count-non-zero

Time of First Successful Submission: 2026-03-01 10:36:36

string-lower

Time of First Successful Submission: 2026-03-01 23:21:46

most-common-byte

Time of First Successful Submission: 2026-03-02 05:09:35

Exit

Time of First Successful Submission: 2026-03-03 01:29:28

Socket

Time of First Successful Submission: 2026-03-03 02:06:09

Bind

Time of First Successful Submission: 2026-03-03 02:36:45

Listen

Time of First Successful Submission: 2026-03-03 03:36:18

Accept

Time of First Successful Submission: 2026-03-03 03:47:44

Static Response

Time of First Successful Submission: 2026-03-03 04:36:19

Dynamic Response

Time of First Successful Submission: 2026-03-03 05:23:05

Iterative GET Server

Time of First Successful Submission: 2026-03-03 05:40:57

Concurrent GET Server

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

Concurrent POST Server

Time of First Successful Submission: 2026-03-03 17:49:51

Web Server

Time of First Successful Submission: 2026-03-03 18:06:55

Debugging Programs

Time of First Successful Submission: 2026-03-02 05:11:27

Inspecting Registers

Time of First Successful Submission: 2026-03-02 05:13:36

Examining Memory

Time of First Successful Submission: 2026-03-02 05:17:37

Setting Breakpoints

Time of First Successful Submission: 2026-03-02 06:34:58

GDB Scripting

Time of First Successful Submission: 2026-03-02 23:14:28

Modifying Data

Time of First Successful Submission: 2026-03-03 00:41:01

Modifying Execution

Time of First Successful Submission: 2026-03-03 00:44:17

Broken Functions

Time of First Successful Submission: 2026-03-03 01:23:59


Playing With Programs

65 / 116 4264 / 23376


What's the password?

Time of First Successful Submission: 2026-01-21 20:02:38

... and again!

Time of First Successful Submission: 2026-01-21 20:03:16

Newline Troubles

Time of First Successful Submission: 2026-01-21 20:05:40

Reasoning about files

Time of First Successful Submission: 2026-01-21 20:08:34

Specifying Filenames

Time of First Successful Submission: 2026-01-21 20:11:22

Binary and Hex Encoding

Time of First Successful Submission: 2026-01-22 02:29:14

More Hex

Time of First Successful Submission: 2026-01-22 02:36:52

Decoding Hex

Time of First Successful Submission: 2026-01-22 02:39:58

Decoding Practice

Time of First Successful Submission: 2026-01-22 02:50:37

Encoding Practice

Time of First Successful Submission: 2026-01-22 17:47:21

Hex-encoding ASCII

Time of First Successful Submission: 2026-01-22 18:15:55

Nested Encoding

Time of First Successful Submission: 2026-01-22 18:19:10

Hex-encoding UTF-8

Time of First Successful Submission: 2026-01-22 18:35:53

UTF Mixups

Time of First Successful Submission: 2026-01-22 19:03:32

Modifying Encoded Data

Time of First Successful Submission: 2026-01-22 19:20:45

Decoding Base64

Time of First Successful Submission: 2026-01-22 20:33:27

Encoding Base64

Time of First Successful Submission: 2026-01-22 21:04:22

Dealing with Obfuscation

Time of First Successful Submission: 2026-01-22 21:10:55

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-01-22 21:32:51

Your First HTTP Request

Time of First Successful Submission: 2026-01-22 22:59:13

Reading Flask

Time of First Successful Submission: 2026-01-22 23:01:29

Commented Data

Time of First Successful Submission: 2026-01-22 23:06:10

HTTP Metadata

Time of First Successful Submission: 2026-01-23 15:20:32

HTTP (netcat)

Time of First Successful Submission: 2026-01-23 15:41:39

HTTP Paths (netcat)

Time of First Successful Submission: 2026-01-23 15:44:25

HTTP (curl)

Time of First Successful Submission: 2026-01-23 15:46:11

HTTP (python)

Time of First Successful Submission: 2026-01-23 15:58:42

HTTP Host Header (python)

Time of First Successful Submission: 2026-01-23 16:25:11

HTTP Host Header (curl)

Time of First Successful Submission: 2026-01-23 16:30:22

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-01-23 16:37:57

URL Encoding (netcat)

Time of First Successful Submission: 2026-01-23 18:11:05

HTTP GET Parameters

Time of First Successful Submission: 2026-01-23 18:32:08

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-01-27 17:30:16

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-01-27 18:12:40

HTTP Forms

Time of First Successful Submission: 2026-01-27 18:17:31

HTTP Forms (curl)

Time of First Successful Submission: 2026-01-27 20:37:51

HTTP Forms (netcat)

Time of First Successful Submission: 2026-01-27 21:43:03

HTTP Forms (python)

Time of First Successful Submission: 2026-01-27 22:28:49

HTTP Forms Without Forms

Time of First Successful Submission: 2026-01-31 07:32:04

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-01-31 07:37:37

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-01-31 07:52:24

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-01-31 20:04:30

HTTP Redirects (curl)

Time of First Successful Submission: 2026-01-31 20:09:45

HTTP Redirects (python)

Time of First Successful Submission: 2026-01-31 20:14:03

HTTP Cookies (curl)

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

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-01-31 20:34:55

HTTP Cookies (python)

Time of First Successful Submission: 2026-01-31 20:42:58

Server State (python)

Time of First Successful Submission: 2026-01-31 20:49:46

Listening Web

Time of First Successful Submission: 2026-01-31 20:56:51

Speaking Redirects

Time of First Successful Submission: 2026-01-31 21:09:03

JavaScript Redirects

Time of First Successful Submission: 2026-01-31 21:28:21

Including JavaScript

Time of First Successful Submission: 2026-01-31 23:07:45

HTTP (javascript)

Time of First Successful Submission: 2026-01-31 23:35:49

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-01-31 23:54:35

HTTP Forms (javascript)

Time of First Successful Submission: 2026-02-01 00:06:58

SQL Queries

Time of First Successful Submission: 2026-02-01 20:15:48

Filtering SQL

Time of First Successful Submission: 2026-02-01 20:24:25

Choosing Columns

Time of First Successful Submission: 2026-02-01 20:26:50

Exclusionary Filtering

Time of First Successful Submission: 2026-02-01 20:28:20

Filtering Strings

Time of First Successful Submission: 2026-02-01 20:30:50

Filtering on Expressions

Time of First Successful Submission: 2026-02-01 20:32:54

SELECTing Expressions

Time of First Successful Submission: 2026-02-01 20:59:39

Composite Conditions

Time of First Successful Submission: 2026-02-01 21:06:51

Reaching Your LIMITs

Time of First Successful Submission: 2026-02-01 21:08:39

Querying Metadata

Time of First Successful Submission: 2026-02-01 21:12:47


GCA CTF

6 / 104 29047 / 43594


Using the Terminal

Time of First Successful Submission: 2026-01-12 22:11:23

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-12 22:13:02

Using the GUI Desktop

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

Pasting into the Desktop

Time of First Successful Submission: 2026-01-12 22:18:56

Connecting over SSH

Time of First Successful Submission: 2026-01-22 22:14:57

Restarting Challenges

Time of First Successful Submission: 2026-01-12 22:21:10