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30 / 232 10955 / 25774

HTTP (curl)

Time of First Successful Submission: 2024-11-17 15:15:42

Triple Dereference

Time of First Successful Submission: 2024-11-03 17:15:38

set-register

Time of First Successful Submission: 2024-11-03 19:59:01

set-multiple-registers

Time of First Successful Submission: 2024-11-03 20:29:48

add-to-register

Time of First Successful Submission: 2024-11-03 20:30:33

linear-equation-registers

Time of First Successful Submission: 2024-11-03 20:34:10

integer-division

Time of First Successful Submission: 2024-11-03 20:51:00

modulo-operation

Time of First Successful Submission: 2024-11-03 20:52:31

set-upper-byte

Time of First Successful Submission: 2024-11-03 20:54:34

efficient-modulo

Time of First Successful Submission: 2024-11-03 21:28:41

byte-extraction

Time of First Successful Submission: 2024-11-03 22:17:50

bitwise-and

Time of First Successful Submission: 2024-11-03 22:36:49

check-even

Time of First Successful Submission: 2024-11-04 15:18:36

memory-read

Time of First Successful Submission: 2024-11-04 15:23:41

memory-write

Time of First Successful Submission: 2024-11-04 15:26:10

memory-increment

Time of First Successful Submission: 2024-11-04 15:35:22

byte-access

Time of First Successful Submission: 2024-11-04 15:37:47

memory-size-access

Time of First Successful Submission: 2024-11-04 15:39:32

little-endian-write

Time of First Successful Submission: 2024-11-04 17:07:36

memory-sum

Time of First Successful Submission: 2024-11-04 17:22:32

stack-subtraction

Time of First Successful Submission: 2024-11-04 17:25:08

swap-stack-values

Time of First Successful Submission: 2024-11-04 17:38:33

average-stack-values

Time of First Successful Submission: 2024-11-04 17:50:22

absolute-jump

Time of First Successful Submission: 2024-11-04 17:57:43

relative-jump

Time of First Successful Submission: 2024-11-05 01:02:43

jump-trampoline

Time of First Successful Submission: 2024-11-05 01:05:15

conditional-jump

Time of First Successful Submission: 2024-11-05 13:54:18

indirect-jump

Time of First Successful Submission: 2024-11-05 18:27:59

average-loop

Time of First Successful Submission: 2024-11-05 18:46:19

count-non-zero

Time of First Successful Submission: 2024-11-05 19:11:08

Intro to Programming Languages

15 / 253 1657 / 37686

Commands

Time of First Successful Submission: 2024-11-02 16:59:23

Command Arguments

Time of First Successful Submission: 2024-11-02 17:00:05

Command History

Time of First Successful Submission: 2025-06-17 16:31:05

The Root Path

Time of First Successful Submission: 2024-11-02 17:00:53

Absolute Paths

Time of First Successful Submission: 2024-11-02 17:01:28

Changing position

Time of First Successful Submission: 2024-11-02 17:02:32

Changing to an Absolute Path

Time of First Successful Submission: 2024-11-02 17:03:19

Relative Paths

Time of First Successful Submission: 2024-11-02 17:06:28

Cat

Time of First Successful Submission: 2024-11-02 17:16:03

Ls

Time of First Successful Submission: 2024-11-02 17:20:39

Ls All

Time of First Successful Submission: 2024-11-02 17:23:05

Find

Time of First Successful Submission: 2024-11-02 17:39:28

Piping Echo

Time of First Successful Submission: 2024-11-02 19:04:01

Piping Stdout

Time of First Successful Submission: 2024-11-02 19:05:11

Piping Stdin

Time of First Successful Submission: 2024-11-02 19:10:05

Start Here

11 / 12 5606 / 51689

Using the Terminal

Time of First Successful Submission: 2025-09-04 19:01:43

Using the VSCode Workspace

Time of First Successful Submission: 2024-11-02 16:31:26

Using the GUI Desktop

Time of First Successful Submission: 2024-11-02 16:32:59

Pasting into the Desktop

Time of First Successful Submission: 2024-11-02 16:37:43

Restarting Challenges

Time of First Successful Submission: 2024-11-02 16:40:29

Challenge Programs

Time of First Successful Submission: 2024-11-02 16:50:04

The Flag File

Time of First Successful Submission: 2024-11-02 16:51:56

Using Privileged Mode

Time of First Successful Submission: 2024-11-02 16:53:47

Persistent Home Directories - One

Time of First Successful Submission: 2024-11-02 16:57:11

Persistent Home Directories - Two

Time of First Successful Submission: 2024-11-02 16:57:50

Linux Luminarium

128 / 128 2399 / 38198

Intro to Commands

Time of First Successful Submission: 2024-11-02 16:59:23

Intro to Arguments

Time of First Successful Submission: 2024-11-02 17:00:05

Command History

Time of First Successful Submission: 2025-06-17 16:31:05

The Root

Time of First Successful Submission: 2024-11-02 17:00:53

Program and absolute paths

Time of First Successful Submission: 2024-11-02 17:01:28

Position thy self

Time of First Successful Submission: 2024-11-02 17:02:32

Position elsewhere

Time of First Successful Submission: 2024-11-02 17:03:19

implicit relative paths, from /

Time of First Successful Submission: 2024-11-02 17:06:28

explicit relative paths, from /

Time of First Successful Submission: 2024-11-02 17:10:33

implicit relative path

Time of First Successful Submission: 2024-11-02 17:11:43

home sweet home

Time of First Successful Submission: 2024-11-02 17:14:10

cat: not the pet, but the command!

Time of First Successful Submission: 2024-11-02 17:16:03

catting absolute paths

Time of First Successful Submission: 2024-11-02 17:16:25

more catting practice

Time of First Successful Submission: 2024-11-02 17:18:55

grepping for a needle in a haystack

Time of First Successful Submission: 2024-11-02 17:19:37

comparing files

Time of First Successful Submission: 2025-09-04 19:04:12

listing files

Time of First Successful Submission: 2024-11-02 17:20:39

touching files

Time of First Successful Submission: 2024-11-02 17:21:18

removing files

Time of First Successful Submission: 2024-11-02 17:21:54

moving files

Time of First Successful Submission: 2025-06-17 16:31:59

copying files

Time of First Successful Submission: 2025-11-14 15:47:23

hidden files

Time of First Successful Submission: 2024-11-02 17:23:05

An Epic Filesystem Quest

Time of First Successful Submission: 2024-11-02 17:28:54

making directories

Time of First Successful Submission: 2024-11-02 17:30:13

finding files

Time of First Successful Submission: 2024-11-02 17:39:28

linking files

Time of First Successful Submission: 2024-11-02 17:47:33

Learning From Documentation

Time of First Successful Submission: 2024-11-02 17:51:11

Learning Complex Usage

Time of First Successful Submission: 2024-11-02 17:53:42

Reading Manuals

Time of First Successful Submission: 2024-11-02 17:56:30

Searching Manuals

Time of First Successful Submission: 2024-11-02 17:58:29

Searching For Manuals

Time of First Successful Submission: 2024-11-02 18:35:12

Helpful Programs

Time of First Successful Submission: 2024-11-02 18:23:33

Help for Builtins

Time of First Successful Submission: 2024-11-02 18:24:52

Matching with *

Time of First Successful Submission: 2024-11-02 18:38:08

Matching with ?

Time of First Successful Submission: 2024-11-02 18:40:09

Matching with []

Time of First Successful Submission: 2024-11-02 18:41:52

Matching paths with []

Time of First Successful Submission: 2024-11-02 18:48:01

Multiple globs

Time of First Successful Submission: 2025-06-17 16:34:26

Mixing globs

Time of First Successful Submission: 2024-11-02 19:02:28

Exclusionary globbing

Time of First Successful Submission: 2024-11-02 19:03:07

Tab completion

Time of First Successful Submission: 2025-06-17 16:35:56

Multiple options for tab completion

Time of First Successful Submission: 2025-06-17 16:37:56

Tab completion on commands

Time of First Successful Submission: 2025-06-17 16:38:38

Redirecting output

Time of First Successful Submission: 2024-11-02 19:04:01

Redirecting more output

Time of First Successful Submission: 2024-11-02 19:05:11

Appending output

Time of First Successful Submission: 2024-11-02 19:06:06

Redirecting errors

Time of First Successful Submission: 2024-11-02 19:07:53

Redirecting input

Time of First Successful Submission: 2024-11-02 19:10:05

Grepping stored results

Time of First Successful Submission: 2024-11-02 19:11:35

Grepping live output

Time of First Successful Submission: 2024-11-02 19:12:09

Grepping errors

Time of First Successful Submission: 2024-11-02 19:13:23

Filtering with grep -v

Time of First Successful Submission: 2025-06-17 16:42:20

Filtering with sed

Time of First Successful Submission: 2026-03-11 16:33:49

Duplicating piped data with tee

Time of First Successful Submission: 2024-11-02 19:17:16

Process substitution for input

Time of First Successful Submission: 2025-09-05 13:38:50

Writing to multiple programs

Time of First Successful Submission: 2024-11-02 19:45:44

Split-piping stderr and stdout

Time of First Successful Submission: 2024-11-02 20:56:09

Named pipes

Time of First Successful Submission: 2025-09-05 13:55:00

Printing Variables

Time of First Successful Submission: 2024-11-02 20:57:09

Setting Variables

Time of First Successful Submission: 2024-11-02 20:59:01

Multi-word Variables

Time of First Successful Submission: 2024-11-02 20:59:33

Exporting Variables

Time of First Successful Submission: 2024-11-02 21:01:44

Printing Exported Variables

Time of First Successful Submission: 2024-11-02 21:02:43

Storing Command Output

Time of First Successful Submission: 2024-11-02 21:04:13

Reading Input

Time of First Successful Submission: 2024-11-02 21:05:17

Reading Files

Time of First Successful Submission: 2024-11-02 21:07:40

Translating characters

Time of First Successful Submission: 2025-06-17 16:51:40

Deleting characters

Time of First Successful Submission: 2025-06-17 16:52:29

Deleting newlines

Time of First Successful Submission: 2025-06-17 16:53:26

Extracting the first lines with head

Time of First Successful Submission: 2025-06-17 16:54:26

Extracting specific sections of text

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

Sorting data

Time of First Successful Submission: 2025-09-05 13:56:44

Listing Processes

Time of First Successful Submission: 2024-11-02 21:11:13

Killing Processes

Time of First Successful Submission: 2024-11-02 21:13:08

Interrupting Processes

Time of First Successful Submission: 2024-11-02 21:13:35

Killing Misbehaving Processes

Time of First Successful Submission: 2025-09-05 14:20:03

Suspending Processes

Time of First Successful Submission: 2024-11-02 21:14:02

Resuming Processes

Time of First Successful Submission: 2024-11-02 21:14:44

Backgrounding Processes

Time of First Successful Submission: 2024-11-02 21:16:14

Foregrounding Processes

Time of First Successful Submission: 2024-11-02 21:18:44

Starting Backgrounded Processes

Time of First Successful Submission: 2024-11-02 21:19:27

Process Exit Codes

Time of First Successful Submission: 2024-11-02 21:25:27

Becoming root with su

Time of First Successful Submission: 2024-11-02 22:27:49

Other users with su

Time of First Successful Submission: 2024-11-02 22:28:26

Cracking passwords

Time of First Successful Submission: 2024-11-02 22:39:51

Using sudo

Time of First Successful Submission: 2024-11-02 22:40:35

Changing File Ownership

Time of First Successful Submission: 2024-11-02 21:29:14

Groups and Files

Time of First Successful Submission: 2024-11-02 21:31:10

Fun With Groups Names

Time of First Successful Submission: 2024-11-02 21:31:50

Changing Permissions

Time of First Successful Submission: 2024-11-02 21:34:31

Executable Files

Time of First Successful Submission: 2024-11-02 21:35:25

Permission Tweaking Practice

Time of First Successful Submission: 2024-11-02 21:42:17

Permissions Setting Practice

Time of First Successful Submission: 2024-11-02 21:48:38

The SUID Bit

Time of First Successful Submission: 2024-11-02 22:00:25

Chaining with Semicolons

Time of First Successful Submission: 2024-11-02 22:41:24

Building on Success

Time of First Successful Submission: 2025-09-05 14:23:31

Handling Failure

Time of First Successful Submission: 2025-09-05 14:24:02

Your First Shell Script

Time of First Successful Submission: 2024-11-02 22:44:20

Redirecting Script Output

Time of First Successful Submission: 2024-11-02 22:47:17

Executable Shell Scripts

Time of First Successful Submission: 2024-11-02 22:50:06

Understanding Shebangs

Time of First Successful Submission: 2025-09-05 19:14:43

Scripting with Arguments

Time of First Successful Submission: 2025-09-05 19:16:41

Scripting with Conditionals

Time of First Successful Submission: 2025-09-05 19:18:39

Scripting with Default Cases

Time of First Successful Submission: 2025-09-05 19:19:25

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-09-05 19:22:01

Reading Shell Scripts

Time of First Successful Submission: 2025-09-05 19:23:39

Launching Screen

Time of First Successful Submission: 2025-09-05 19:24:20

Detaching and Attaching

Time of First Successful Submission: 2025-09-05 19:25:30

Finding Sessions

Time of First Successful Submission: 2025-09-05 19:26:51

Switching Windows

Time of First Successful Submission: 2025-09-05 19:31:12

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-09-05 19:33:32

Switching Windows (tmux)

Time of First Successful Submission: 2025-09-05 20:00:15

The PATH Variable

Time of First Successful Submission: 2024-11-02 22:57:29

Setting PATH

Time of First Successful Submission: 2024-11-02 22:59:50

Finding Commands

Time of First Successful Submission: 2025-06-17 17:09:54

Adding Commands

Time of First Successful Submission: 2024-11-03 01:00:44

Hijacking Commands

Time of First Successful Submission: 2024-11-03 02:37:42

Bashrc Backdoor

Time of First Successful Submission: 2025-06-17 17:12:28

Sniffing Input

Time of First Successful Submission: 2025-06-18 18:04:07

Overshared Directories

Time of First Successful Submission: 2025-06-18 19:15:25

Tricky Linking

Time of First Successful Submission: 2025-06-18 21:45:35

Sniffing Process Arguments

Time of First Successful Submission: 2025-06-18 21:49:05

Snooping on Configurations

Time of First Successful Submission: 2025-06-18 21:51:23

The Fork Bomb

Time of First Successful Submission: 2025-06-18 22:14:23

Disk-Space Doomsday

Time of First Successful Submission: 2025-06-18 22:17:45

rm -rf /

Time of First Successful Submission: 2025-06-18 22:20:57

Life after rm -rf /

Time of First Successful Submission: 2025-06-18 22:30:21

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-06-18 22:40:49

Computing 101

130 / 132 95 / 21345

Your First Register

Time of First Successful Submission: 2024-11-03 16:13:03

Your First Syscall

Time of First Successful Submission: 2024-11-03 16:14:17

Exit Codes

Time of First Successful Submission: 2024-11-03 16:17:06

Building Executables

Time of First Successful Submission: 2024-11-03 16:24:57

Moving Between Registers

Time of First Successful Submission: 2024-11-03 16:32:21

Loading From Memory

Time of First Successful Submission: 2024-11-03 16:55:53

More Loading Practice

Time of First Successful Submission: 2024-11-03 16:57:29

Dereferencing Pointers

Time of First Successful Submission: 2024-11-03 16:59:07

Dereferencing Yourself

Time of First Successful Submission: 2024-11-03 17:01:41

Dereferencing with Offsets

Time of First Successful Submission: 2024-11-03 17:02:51

Stored Addresses

Time of First Successful Submission: 2024-11-03 17:05:59

Double Dereference

Time of First Successful Submission: 2024-11-03 17:11:53

The Stack

Time of First Successful Submission: 2026-06-10 14:01:07

Stack Offsets

Time of First Successful Submission: 2026-06-10 14:04:10

Program Arguments on the Stack

Time of First Successful Submission: 2026-06-10 14:07:26

Popping From the Stack

Time of First Successful Submission: 2026-06-10 14:18:10

Negative Numbers

Time of First Successful Submission: 2026-06-11 10:29:09

Negative Numbers (16-bit)

Time of First Successful Submission: 2026-06-11 10:34:23

Negative Numbers (32-bit)

Time of First Successful Submission: 2026-06-11 10:47:24

Encoding Negatives

Time of First Successful Submission: 2026-06-11 10:49:57

Binary and Hex Encoding

Time of First Successful Submission: 2026-06-11 10:51:37

More Hex

Time of First Successful Submission: 2026-06-11 11:00:04

Decoding Hex

Time of First Successful Submission: 2026-06-11 11:01:16

Mixed Conversions

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

Disassembling Programs

Time of First Successful Submission: 2026-06-11 11:13:49

Tracing Syscalls

Time of First Successful Submission: 2024-11-03 16:29:49

Starting GDB

Time of First Successful Submission: 2025-06-17 16:39:29

Quitting GDB

Time of First Successful Submission: 2026-06-11 13:18:58

Starting Programs in GDB

Time of First Successful Submission: 2025-06-17 16:41:20

Disassembling in GDB

Time of First Successful Submission: 2026-06-11 13:20:25

Stepping Through Instructions

Time of First Successful Submission: 2026-06-11 13:21:10

Reading Register Values

Time of First Successful Submission: 2026-06-11 13:22:05

Popping Stack Values

Time of First Successful Submission: 2026-06-11 13:23:14

Examining Memory

Time of First Successful Submission: 2026-06-11 13:25:07

Examining Stack Pointers

Time of First Successful Submission: 2026-06-11 13:27:15

Cooperative Debugging

Time of First Successful Submission: 2026-06-11 13:43:24

Running with Arguments

Time of First Successful Submission: 2026-06-11 13:50:11

Redirecting Input in GDB

Time of First Successful Submission: 2026-06-27 16:04:04

Writing Output

Time of First Successful Submission: 2024-11-03 17:21:44

Chaining Syscalls

Time of First Successful Submission: 2024-11-03 17:23:34

Writing Strings

Time of First Successful Submission: 2024-11-03 17:24:14

Reading Data

Time of First Successful Submission: 2025-09-09 15:24:16

Reading Exactly

Time of First Successful Submission: 2026-06-16 00:38:37

Opening Files

Time of First Successful Submission: 2026-06-11 17:22:31

Hardcoding the Filename

Time of First Successful Submission: 2026-06-11 17:51:24

RIP-Relative Strings

Time of First Successful Submission: 2026-06-12 14:49:41

Comparing Values

Time of First Successful Submission: 2026-06-11 23:44:16

Comparing Characters

Time of First Successful Submission: 2026-06-11 23:49:06

Conditional Control Flow

Time of First Successful Submission: 2026-06-11 23:53:58

Comparing Strings

Time of First Successful Submission: 2026-06-11 23:56:38

Reverse the Password

Time of First Successful Submission: 2026-06-12 00:00:47

Conditionals Without Conditionals

Time of First Successful Submission: 2026-06-12 01:37:26

Recognizing Loops

Time of First Successful Submission: 2026-06-12 01:59:44

Writing From a Shared Library

Time of First Successful Submission: 2026-06-12 17:10:04

Returning a Value

Time of First Successful Submission: 2026-06-13 11:07:09

Calling Through a Pointer

Time of First Successful Submission: 2026-06-13 11:10:47

Calling Through a Pointer with an Argument

Time of First Successful Submission: 2026-06-13 11:13:33

Saving Caller-Saved Registers

Time of First Successful Submission: 2026-06-13 11:59:14

Saving Callee-Saved Registers

Time of First Successful Submission: 2026-06-13 12:05:48

Sign Extension

Time of First Successful Submission: 2026-06-13 12:16:44

Little-Endian Bytes

Time of First Successful Submission: 2026-06-13 12:22:01

Qword by Qword

Time of First Successful Submission: 2026-06-13 12:29:22

Dword by Dword

Time of First Successful Submission: 2026-06-13 12:56:21

Word by Word

Time of First Successful Submission: 2026-06-13 12:58:27

Byte by Byte

Time of First Successful Submission: 2026-06-13 13:00:39

Cracking a Struct

Time of First Successful Submission: 2026-06-13 13:03:31

Scrambled Struct

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

Reverse the Calculation

Time of First Successful Submission: 2026-06-13 14:17:11

Reverse the Reverse

Time of First Successful Submission: 2026-06-13 14:18:30

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-06-13 14:24:22

Even or Odd

Time of First Successful Submission: 2026-06-13 14:35:51

Masking Bits

Time of First Successful Submission: 2026-06-13 14:39:46

Lowercase a String

Time of First Successful Submission: 2026-06-13 14:44:32

Uppercase a String

Time of First Successful Submission: 2026-06-13 15:22:40

Swap Case

Time of First Successful Submission: 2026-06-13 15:25:49

Shifting Left

Time of First Successful Submission: 2026-06-13 15:28:12

Shifting Right

Time of First Successful Submission: 2026-06-13 15:31:53

Loops on Data

Time of First Successful Submission: 2026-06-13 15:35:22

Reaching Into the Caller's Frame

Time of First Successful Submission: 2026-06-13 17:29:03

Loading Stale Stack Data

Time of First Successful Submission: 2026-06-19 12:46:12

Stealing Stale Stack Data

Time of First Successful Submission: 2026-06-18 15:13:06

Reserving Your Own Frame

Time of First Successful Submission: 2026-06-18 15:16:47

Using Your Own Frame

Time of First Successful Submission: 2026-06-14 12:18:32

Environment Variables on the Stack

Time of First Successful Submission: 2026-06-15 13:19:33

Aligning the Stack Through the Environment

Time of First Successful Submission: 2026-06-15 13:23:33

Aligning the Stack Through GDB

Time of First Successful Submission: 2026-06-15 14:53:16

Aligning the Stack Through GDB, Generalized

Time of First Successful Submission: 2026-06-15 14:56:13

A Single Digit

Time of First Successful Submission: 2026-06-15 23:58:47

Two Digits

Time of First Successful Submission: 2026-06-16 00:13:42

String to Integer

Time of First Successful Submission: 2026-06-16 14:57:23

Negative Numbers

Time of First Successful Submission: 2026-06-16 15:13:44

Where the Number Ends

Time of First Successful Submission: 2026-06-16 15:20:59

A Whole Program

Time of First Successful Submission: 2026-06-16 15:40:25

A Single Digit, Back to Text

Time of First Successful Submission: 2026-06-16 15:47:07

Divide and Remainder

Time of First Successful Submission: 2026-06-16 18:13:28

Drop the Leading Zero

Time of First Successful Submission: 2026-06-16 18:32:55

Integer to String

Time of First Successful Submission: 2026-06-17 12:36:09

Negative Numbers, Back to Text

Time of First Successful Submission: 2026-06-17 13:44:38

Sum Them All

Time of First Successful Submission: 2026-06-26 04:51:29

Addition

Time of First Successful Submission: 2026-06-27 13:26:49

Subtraction

Time of First Successful Submission: 2026-06-27 13:42:28

Multiplication

Time of First Successful Submission: 2026-06-27 13:53:31

Bitwise Operators

Time of First Successful Submission: 2026-06-27 14:08:22

Unary Operators

Time of First Successful Submission: 2026-06-27 14:31:42

Literal Output

Time of First Successful Submission: 2026-06-27 15:44:17

Newline Escapes

Time of First Successful Submission: 2026-06-27 18:43:04

Escaped Syntax

Time of First Successful Submission: 2026-06-27 19:01:49

Decimal Markers

Time of First Successful Submission: 2026-06-27 19:40:23

Multiple Decimal Markers

Time of First Successful Submission: 2026-06-27 19:55:53

String Markers

Time of First Successful Submission: 2026-06-27 22:57:50

Hex Byte Escapes

Time of First Successful Submission: 2026-06-28 17:43:26

Debugging Programs

Time of First Successful Submission: 2024-11-14 16:07:48

Inspecting Registers

Time of First Successful Submission: 2024-11-14 16:09:39

Examining Memory

Time of First Successful Submission: 2026-06-22 20:31:04

Setting Breakpoints

Time of First Successful Submission: 2026-06-22 21:11:09

GDB Scripting

Time of First Successful Submission: 2026-06-22 21:58:00

Modifying Data

Time of First Successful Submission: 2026-06-24 03:53:52

Modifying Execution

Time of First Successful Submission: 2026-06-24 03:59:08

Broken Functions

Time of First Successful Submission: 2026-06-24 04:47:45

Exit

Time of First Successful Submission: 2026-06-28 17:45:08

Socket

Time of First Successful Submission: 2026-06-29 15:05:23

Bind

Time of First Successful Submission: 2026-06-29 15:50:47

Listen

Time of First Successful Submission: 2026-06-29 16:01:59

Accept

Time of First Successful Submission: 2026-06-29 16:31:18

Static Response

Time of First Successful Submission: 2026-06-29 17:08:06

Dynamic Response

Time of First Successful Submission: 2026-06-30 11:04:51

Iterative GET Server

Time of First Successful Submission: 2026-06-30 11:08:52

Concurrent GET Server

Time of First Successful Submission: 2026-07-01 11:42:42

Concurrent POST Server

Time of First Successful Submission: 2026-07-01 16:00:57

Web Server

Time of First Successful Submission: 2026-07-01 16:26:36

Playing With Programs

116 / 116 1075 / 24534

What's the password?

Time of First Successful Submission: 2025-06-19 15:32:12

... and again!

Time of First Successful Submission: 2025-06-19 15:32:58

Newline Troubles

Time of First Successful Submission: 2025-06-19 15:36:57

Reasoning about files

Time of First Successful Submission: 2025-06-19 15:54:54

Specifying Filenames

Time of First Successful Submission: 2025-06-19 16:25:24

Binary and Hex Encoding

Time of First Successful Submission: 2025-06-20 13:41:43

More Hex

Time of First Successful Submission: 2025-06-20 15:37:59

Decoding Hex

Time of First Successful Submission: 2025-06-20 17:03:18

Decoding Practice

Time of First Successful Submission: 2025-06-21 16:13:08

Encoding Practice

Time of First Successful Submission: 2026-07-07 16:33:02

Hex-encoding ASCII

Time of First Successful Submission: 2026-07-07 16:57:26

Nested Encoding

Time of First Successful Submission: 2026-07-07 19:25:41

Hex-encoding UTF-8

Time of First Successful Submission: 2026-07-07 19:31:33

UTF Mixups

Time of First Successful Submission: 2026-07-07 23:14:57

Modifying Encoded Data

Time of First Successful Submission: 2026-07-08 14:10:08

Decoding Base64

Time of First Successful Submission: 2026-07-08 14:43:45

Encoding Base64

Time of First Successful Submission: 2026-07-08 14:45:12

Dealing with Obfuscation

Time of First Successful Submission: 2026-07-08 14:50:33

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-07-08 14:56:58

Your First HTTP Request

Time of First Successful Submission: 2026-07-08 15:21:28

Reading Flask

Time of First Successful Submission: 2026-07-08 15:22:57

Commented Data

Time of First Successful Submission: 2026-07-08 15:25:28

HTTP Metadata

Time of First Successful Submission: 2026-07-08 15:27:55

HTTP (netcat)

Time of First Successful Submission: 2026-07-08 15:47:04

HTTP Paths (netcat)

Time of First Successful Submission: 2026-07-08 15:48:37

HTTP (curl)

Time of First Successful Submission: 2026-07-08 15:51:07

HTTP (python)

Time of First Successful Submission: 2026-07-08 15:54:33

HTTP Host Header (python)

Time of First Successful Submission: 2026-07-08 16:05:41

HTTP Host Header (curl)

Time of First Successful Submission: 2026-07-08 17:05:46

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-07-08 17:07:58

URL Encoding (netcat)

Time of First Successful Submission: 2026-07-08 17:10:08

HTTP GET Parameters

Time of First Successful Submission: 2026-07-08 17:12:53

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-07-08 17:15:21

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-07-08 17:28:00

HTTP Forms

Time of First Successful Submission: 2026-07-08 17:31:00

HTTP Forms (curl)

Time of First Successful Submission: 2026-07-08 17:37:39

HTTP Forms (netcat)

Time of First Successful Submission: 2026-07-08 17:43:05

HTTP Forms (python)

Time of First Successful Submission: 2026-07-08 17:47:24

HTTP Forms Without Forms

Time of First Successful Submission: 2026-07-09 12:48:08

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-07-09 15:20:45

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-07-09 15:48:31

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-07-09 15:53:55

HTTP Redirects (curl)

Time of First Successful Submission: 2026-07-09 15:54:56

HTTP Redirects (python)

Time of First Successful Submission: 2026-07-09 16:01:30

HTTP Cookies (curl)

Time of First Successful Submission: 2026-07-09 23:12:23

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-07-10 15:49:08

HTTP Cookies (python)

Time of First Successful Submission: 2026-07-10 15:51:57

Server State (python)

Time of First Successful Submission: 2026-07-10 15:53:29

Listening Web

Time of First Successful Submission: 2026-07-10 16:00:35

Speaking Redirects

Time of First Successful Submission: 2026-07-11 16:27:25

JavaScript Redirects

Time of First Successful Submission: 2026-07-11 16:41:59

Including JavaScript

Time of First Successful Submission: 2026-07-11 17:33:38

HTTP (javascript)

Time of First Successful Submission: 2026-07-11 17:54:27

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-07-11 18:01:17

HTTP Forms (javascript)

Time of First Successful Submission: 2026-07-11 18:22:07

cat

Time of First Successful Submission: 2026-07-11 20:08:27

more

Time of First Successful Submission: 2026-07-11 20:08:51

less

Time of First Successful Submission: 2026-07-11 20:09:17

tail

Time of First Successful Submission: 2026-07-11 20:09:40

head

Time of First Successful Submission: 2026-07-11 20:10:03

sort

Time of First Successful Submission: 2026-07-11 20:10:26

vim

Time of First Successful Submission: 2026-07-11 20:10:50

emacs

Time of First Successful Submission: 2026-07-11 20:11:12

nano

Time of First Successful Submission: 2026-07-11 20:11:33

rev

Time of First Successful Submission: 2026-07-11 20:12:02

od

Time of First Successful Submission: 2026-07-11 20:22:03

hd

Time of First Successful Submission: 2026-07-11 20:23:24

xxd

Time of First Successful Submission: 2026-07-11 20:24:20

base32

Time of First Successful Submission: 2026-07-11 20:25:12

base64

Time of First Successful Submission: 2026-07-11 20:25:44

split

Time of First Successful Submission: 2026-07-11 20:33:41

gzip

Time of First Successful Submission: 2026-07-11 20:36:02

bzip2

Time of First Successful Submission: 2026-07-11 20:53:06

zip

Time of First Successful Submission: 2026-07-11 23:16:33

tar

Time of First Successful Submission: 2026-07-11 23:22:57

ar

Time of First Successful Submission: 2026-07-11 23:26:59

cpio

Time of First Successful Submission: 2026-07-11 23:29:26

genisoimage

Time of First Successful Submission: 2026-07-11 23:32:46

env

Time of First Successful Submission: 2026-07-11 23:33:32

find

Time of First Successful Submission: 2026-07-11 23:34:32

make

Time of First Successful Submission: 2026-07-13 02:36:05

nice

Time of First Successful Submission: 2026-07-13 02:36:33

timeout

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

stdbuf

Time of First Successful Submission: 2026-07-13 02:37:33

setarch

Time of First Successful Submission: 2026-07-13 02:41:36

watch

Time of First Successful Submission: 2026-07-13 02:43:11

socat

Time of First Successful Submission: 2026-07-13 02:43:55

whiptail

Time of First Successful Submission: 2026-07-13 13:27:49

awk

Time of First Successful Submission: 2026-07-13 13:28:31

sed

Time of First Successful Submission: 2026-07-13 13:29:09

ed

Time of First Successful Submission: 2026-07-13 13:30:12

chown

Time of First Successful Submission: 2026-07-13 13:31:52

chmod

Time of First Successful Submission: 2026-07-13 02:30:05

cp

Time of First Successful Submission: 2026-07-13 13:32:30

mv

Time of First Successful Submission: 2026-07-13 15:36:18

perl

Time of First Successful Submission: 2026-07-13 15:38:24

python

Time of First Successful Submission: 2026-07-13 15:40:18

ruby

Time of First Successful Submission: 2026-07-13 15:57:09

bash

Time of First Successful Submission: 2026-07-13 15:58:02

date

Time of First Successful Submission: 2026-07-13 15:58:37

dmesg

Time of First Successful Submission: 2026-07-13 15:59:26

wc

Time of First Successful Submission: 2026-07-13 16:00:21

gcc

Time of First Successful Submission: 2026-07-13 19:22:26

as

Time of First Successful Submission: 2026-07-13 19:22:58

wget

Time of First Successful Submission: 2026-07-14 16:38:27

ssh-keygen

Time of First Successful Submission: 2026-07-21 21:53:39

SQL Queries

Time of First Successful Submission: 2026-07-21 22:01:32

Filtering SQL

Time of First Successful Submission: 2026-07-21 22:05:05

Choosing Columns

Time of First Successful Submission: 2026-07-21 22:13:23

Exclusionary Filtering

Time of First Successful Submission: 2026-07-21 22:20:11

Filtering Strings

Time of First Successful Submission: 2026-07-21 22:21:30

Filtering on Expressions

Time of First Successful Submission: 2026-07-21 23:11:11

SELECTing Expressions

Time of First Successful Submission: 2026-07-22 01:26:12

Composite Conditions

Time of First Successful Submission: 2026-07-22 01:38:18

Reaching Your LIMITs

Time of First Successful Submission: 2026-07-22 01:42:37

Querying Metadata

Time of First Successful Submission: 2026-07-22 01:46:03

DSU Cyber Camps

11 / 104 5864 / 51997

Using the Terminal

Time of First Successful Submission: 2025-09-04 19:01:43

Using the VSCode Workspace

Time of First Successful Submission: 2024-11-02 16:31:26

Using the GUI Desktop

Time of First Successful Submission: 2024-11-02 16:32:59

Pasting into the Desktop

Time of First Successful Submission: 2024-11-02 16:37:43

Restarting Challenges

Time of First Successful Submission: 2024-11-02 16:40:29

Getting Help

Time of First Successful Submission: 2024-11-02 16:48:16

Challenge Programs

Time of First Successful Submission: 2024-11-02 16:50:04

The Flag File

Time of First Successful Submission: 2024-11-02 16:51:56

Using Privileged Mode

Time of First Successful Submission: 2024-11-02 16:53:47

Persistent Home Directories - One

Time of First Successful Submission: 2024-11-02 16:57:11

Persistent Home Directories - Two

Time of First Successful Submission: 2024-11-02 16:57:50

GCA CTF

11 / 104 5865 / 51997

Using the Terminal

Time of First Successful Submission: 2025-09-04 19:01:43

Using the VSCode Workspace

Time of First Successful Submission: 2024-11-02 16:31:26

Using the GUI Desktop

Time of First Successful Submission: 2024-11-02 16:32:59

Pasting into the Desktop

Time of First Successful Submission: 2024-11-02 16:37:43

Restarting Challenges

Time of First Successful Submission: 2024-11-02 16:40:29

Getting Help

Time of First Successful Submission: 2024-11-02 16:48:16

Challenge Programs

Time of First Successful Submission: 2024-11-02 16:50:04

The Flag File

Time of First Successful Submission: 2024-11-02 16:51:56

Using Privileged Mode

Time of First Successful Submission: 2024-11-02 16:53:47

Persistent Home Directories - One

Time of First Successful Submission: 2024-11-02 16:57:11

Persistent Home Directories - Two

Time of First Successful Submission: 2024-11-02 16:57:50