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31 / 232 10045 / 25815


Triple Dereference

Time of First Successful Submission: 2025-11-09 22:59:08

set-register

Time of First Successful Submission: 2025-11-10 23:24:11

set-multiple-registers

Time of First Successful Submission: 2025-11-11 22:32:23

add-to-register

Time of First Successful Submission: 2025-11-11 22:52:49

linear-equation-registers

Time of First Successful Submission: 2025-11-12 14:40:36

integer-division

Time of First Successful Submission: 2025-11-12 15:57:36

modulo-operation

Time of First Successful Submission: 2025-11-12 15:59:49

set-upper-byte

Time of First Successful Submission: 2025-11-12 16:01:01

efficient-modulo

Time of First Successful Submission: 2025-11-12 16:13:36

byte-extraction

Time of First Successful Submission: 2025-11-12 20:52:11

bitwise-and

Time of First Successful Submission: 2025-11-12 20:53:54

check-even

Time of First Successful Submission: 2025-11-12 21:05:26

memory-read

Time of First Successful Submission: 2025-11-13 00:03:31

memory-write

Time of First Successful Submission: 2025-11-13 00:09:32

memory-increment

Time of First Successful Submission: 2025-11-13 00:20:54

byte-access

Time of First Successful Submission: 2025-11-13 00:28:09

memory-size-access

Time of First Successful Submission: 2025-11-13 00:39:08

little-endian-write

Time of First Successful Submission: 2025-11-14 02:59:57

memory-sum

Time of First Successful Submission: 2025-11-14 03:06:38

stack-subtraction

Time of First Successful Submission: 2025-11-14 03:08:19

swap-stack-values

Time of First Successful Submission: 2025-11-14 03:10:34

average-stack-values

Time of First Successful Submission: 2025-11-14 03:30:07

absolute-jump

Time of First Successful Submission: 2025-11-14 16:32:37

relative-jump

Time of First Successful Submission: 2025-11-15 00:15:44

jump-trampoline

Time of First Successful Submission: 2025-11-16 01:48:18

conditional-jump

Time of First Successful Submission: 2025-11-17 15:13:38

indirect-jump

Time of First Successful Submission: 2025-11-17 15:25:22

average-loop

Time of First Successful Submission: 2025-11-17 15:38:10

count-non-zero

Time of First Successful Submission: 2025-11-17 18:49:06

string-lower

Time of First Successful Submission: 2025-11-19 22:36:45

most-common-byte

Time of First Successful Submission: 2025-11-21 19:14:53


Intro to Programming Languages

15 / 253 5967 / 40020


Commands

Time of First Successful Submission: 2025-10-23 20:59:38

Command Arguments

Time of First Successful Submission: 2025-10-24 17:38:01

Command History

Time of First Successful Submission: 2025-10-24 17:38:40

The Root Path

Time of First Successful Submission: 2025-10-24 17:39:23

Absolute Paths

Time of First Successful Submission: 2025-10-24 17:40:12

Changing position

Time of First Successful Submission: 2025-10-24 17:41:19

Changing to an Absolute Path

Time of First Successful Submission: 2025-10-24 17:42:15

Relative Paths

Time of First Successful Submission: 2025-10-24 17:44:16

Cat

Time of First Successful Submission: 2025-10-26 01:03:41

Ls

Time of First Successful Submission: 2025-10-26 01:47:27

Ls All

Time of First Successful Submission: 2025-10-26 01:51:05

Find

Time of First Successful Submission: 2025-10-26 02:06:06

Piping Echo

Time of First Successful Submission: 2025-10-27 20:39:00

Piping Stdout

Time of First Successful Submission: 2025-10-27 20:39:41

Piping Stdin

Time of First Successful Submission: 2025-10-27 20:48:11


Intro to Cybersecurity

1 / 183 22421 / 22577


XOR

Time of First Successful Submission: 2026-07-10 02:57:22


Start Here

12 / 12 1460 / 55363


Using the Terminal

Time of First Successful Submission: 2025-10-23 20:15:09

Using the VSCode Workspace

Time of First Successful Submission: 2025-10-23 20:16:57

Using the GUI Desktop

Time of First Successful Submission: 2025-10-23 20:19:04

Pasting into the Desktop

Time of First Successful Submission: 2025-10-23 20:23:50

Restarting Challenges

Time of First Successful Submission: 2025-10-23 20:25:46

Challenge Programs

Time of First Successful Submission: 2025-10-23 20:33:51

The Flag File

Time of First Successful Submission: 2025-10-23 20:36:21

Using Privileged Mode

Time of First Successful Submission: 2025-10-23 20:44:29

Persistent Home Directories - One

Time of First Successful Submission: 2025-10-23 20:49:47

Persistent Home Directories - Two

Time of First Successful Submission: 2025-10-23 20:52:49


Linux Luminarium

128 / 128 134 / 40628


Intro to Commands

Time of First Successful Submission: 2025-10-23 20:59:38

Intro to Arguments

Time of First Successful Submission: 2025-10-24 17:38:01

Command History

Time of First Successful Submission: 2025-10-24 17:38:40

The Root

Time of First Successful Submission: 2025-10-24 17:39:23

Program and absolute paths

Time of First Successful Submission: 2025-10-24 17:40:12

Position thy self

Time of First Successful Submission: 2025-10-24 17:41:19

Position elsewhere

Time of First Successful Submission: 2025-10-24 17:42:15

implicit relative paths, from /

Time of First Successful Submission: 2025-10-24 17:44:16

explicit relative paths, from /

Time of First Successful Submission: 2025-10-24 17:45:23

implicit relative path

Time of First Successful Submission: 2025-10-24 17:46:02

home sweet home

Time of First Successful Submission: 2025-10-24 17:48:31

cat: not the pet, but the command!

Time of First Successful Submission: 2025-10-26 01:03:41

catting absolute paths

Time of First Successful Submission: 2025-10-26 01:04:16

more catting practice

Time of First Successful Submission: 2025-10-26 01:42:07

grepping for a needle in a haystack

Time of First Successful Submission: 2025-10-26 01:42:46

comparing files

Time of First Successful Submission: 2025-10-26 01:45:00

listing files

Time of First Successful Submission: 2025-10-26 01:47:27

touching files

Time of First Successful Submission: 2025-10-26 01:48:04

removing files

Time of First Successful Submission: 2025-10-26 01:48:50

moving files

Time of First Successful Submission: 2025-10-26 01:50:10

copying files

Time of First Successful Submission: 2025-11-06 20:03:56

hidden files

Time of First Successful Submission: 2025-10-26 01:51:05

An Epic Filesystem Quest

Time of First Successful Submission: 2025-10-26 02:00:37

making directories

Time of First Successful Submission: 2025-10-26 02:01:23

finding files

Time of First Successful Submission: 2025-10-26 02:06:06

linking files

Time of First Successful Submission: 2025-10-26 02:15:26

Learning From Documentation

Time of First Successful Submission: 2025-10-26 23:49:31

Learning Complex Usage

Time of First Successful Submission: 2025-10-26 23:51:43

Reading Manuals

Time of First Successful Submission: 2025-10-26 23:56:22

Searching Manuals

Time of First Successful Submission: 2025-10-26 23:57:15

Searching For Manuals

Time of First Successful Submission: 2025-10-27 00:00:10

Helpful Programs

Time of First Successful Submission: 2025-10-27 00:02:25

Help for Builtins

Time of First Successful Submission: 2025-10-27 00:04:06

Matching with *

Time of First Successful Submission: 2025-10-27 20:10:38

Matching with ?

Time of First Successful Submission: 2025-10-27 20:11:37

Matching with []

Time of First Successful Submission: 2025-10-27 20:12:40

Matching paths with []

Time of First Successful Submission: 2025-10-27 20:13:56

Multiple globs

Time of First Successful Submission: 2025-10-27 20:15:19

Mixing globs

Time of First Successful Submission: 2025-10-27 20:17:56

Exclusionary globbing

Time of First Successful Submission: 2025-10-27 20:19:33

Tab completion

Time of First Successful Submission: 2025-10-27 20:20:24

Multiple options for tab completion

Time of First Successful Submission: 2025-10-27 20:28:31

Tab completion on commands

Time of First Successful Submission: 2025-10-27 20:28:48

Redirecting output

Time of First Successful Submission: 2025-10-27 20:39:00

Redirecting more output

Time of First Successful Submission: 2025-10-27 20:39:41

Appending output

Time of First Successful Submission: 2025-10-27 20:42:52

Redirecting errors

Time of First Successful Submission: 2025-10-27 20:45:07

Redirecting input

Time of First Successful Submission: 2025-10-27 20:48:11

Grepping stored results

Time of First Successful Submission: 2025-10-27 20:49:10

Grepping live output

Time of First Successful Submission: 2025-10-27 20:49:43

Grepping errors

Time of First Successful Submission: 2025-10-27 20:51:03

Filtering with grep -v

Time of First Successful Submission: 2025-10-27 20:52:27

Filtering with sed

Time of First Successful Submission: 2025-11-06 03:00:07

Duplicating piped data with tee

Time of First Successful Submission: 2025-10-27 20:55:32

Process substitution for input

Time of First Successful Submission: 2025-10-28 21:47:03

Writing to multiple programs

Time of First Successful Submission: 2025-10-29 22:35:42

Split-piping stderr and stdout

Time of First Successful Submission: 2025-10-29 22:56:49

Named pipes

Time of First Successful Submission: 2025-10-29 23:08:13

Printing Variables

Time of First Successful Submission: 2025-10-29 23:09:56

Setting Variables

Time of First Successful Submission: 2025-10-29 23:11:21

Multi-word Variables

Time of First Successful Submission: 2025-10-29 23:13:06

Exporting Variables

Time of First Successful Submission: 2025-10-29 23:14:54

Printing Exported Variables

Time of First Successful Submission: 2025-10-29 23:15:24

Storing Command Output

Time of First Successful Submission: 2025-10-29 23:17:35

Reading Input

Time of First Successful Submission: 2025-10-29 23:20:25

Reading Files

Time of First Successful Submission: 2025-10-29 23:23:54

Translating characters

Time of First Successful Submission: 2025-10-29 23:27:53

Deleting characters

Time of First Successful Submission: 2025-10-29 23:28:29

Deleting newlines

Time of First Successful Submission: 2025-10-29 23:29:55

Extracting the first lines with head

Time of First Successful Submission: 2025-10-29 23:30:48

Extracting specific sections of text

Time of First Successful Submission: 2025-10-29 23:34:38

Sorting data

Time of First Successful Submission: 2025-10-29 23:35:54

Listing Processes

Time of First Successful Submission: 2025-10-30 23:49:05

Killing Processes

Time of First Successful Submission: 2025-11-01 21:06:53

Interrupting Processes

Time of First Successful Submission: 2025-11-01 21:07:30

Killing Misbehaving Processes

Time of First Successful Submission: 2025-11-01 21:10:40

Suspending Processes

Time of First Successful Submission: 2025-11-01 21:11:41

Resuming Processes

Time of First Successful Submission: 2025-11-01 21:12:20

Backgrounding Processes

Time of First Successful Submission: 2025-11-01 21:25:37

Foregrounding Processes

Time of First Successful Submission: 2025-11-01 21:27:26

Starting Backgrounded Processes

Time of First Successful Submission: 2025-11-01 21:28:19

Process Exit Codes

Time of First Successful Submission: 2025-11-01 21:29:25

Becoming root with su

Time of First Successful Submission: 2025-11-01 21:34:30

Other users with su

Time of First Successful Submission: 2025-11-01 21:35:14

Cracking passwords

Time of First Successful Submission: 2025-11-01 21:39:13

Using sudo

Time of First Successful Submission: 2025-11-01 21:41:16

Changing File Ownership

Time of First Successful Submission: 2025-11-01 21:47:16

Groups and Files

Time of First Successful Submission: 2025-11-01 22:22:04

Fun With Groups Names

Time of First Successful Submission: 2025-11-01 22:42:53

Changing Permissions

Time of First Successful Submission: 2025-11-01 23:15:13

Executable Files

Time of First Successful Submission: 2025-11-01 23:16:46

Permission Tweaking Practice

Time of First Successful Submission: 2025-11-01 23:22:41

Permissions Setting Practice

Time of First Successful Submission: 2025-11-01 23:31:23

The SUID Bit

Time of First Successful Submission: 2025-11-01 23:33:34

Chaining with Semicolons

Time of First Successful Submission: 2025-11-01 23:37:31

Building on Success

Time of First Successful Submission: 2025-11-01 23:38:57

Handling Failure

Time of First Successful Submission: 2025-11-01 23:41:45

Your First Shell Script

Time of First Successful Submission: 2025-11-01 23:43:51

Redirecting Script Output

Time of First Successful Submission: 2025-11-01 23:46:56

Executable Shell Scripts

Time of First Successful Submission: 2025-11-01 23:50:00

Understanding Shebangs

Time of First Successful Submission: 2025-11-03 00:48:53

Scripting with Arguments

Time of First Successful Submission: 2025-11-03 01:02:08

Scripting with Conditionals

Time of First Successful Submission: 2025-11-03 01:04:23

Scripting with Default Cases

Time of First Successful Submission: 2025-11-03 01:05:36

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-11-03 01:08:09

Reading Shell Scripts

Time of First Successful Submission: 2025-11-03 01:14:52

Launching Screen

Time of First Successful Submission: 2025-11-03 21:23:19

Detaching and Attaching

Time of First Successful Submission: 2025-11-03 21:24:39

Finding Sessions

Time of First Successful Submission: 2025-11-03 21:26:00

Switching Windows

Time of First Successful Submission: 2025-11-03 21:27:23

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-11-03 21:28:14

Switching Windows (tmux)

Time of First Successful Submission: 2025-11-03 21:29:00

The PATH Variable

Time of First Successful Submission: 2025-11-03 21:53:27

Setting PATH

Time of First Successful Submission: 2025-11-03 23:09:15

Finding Commands

Time of First Successful Submission: 2025-11-03 23:11:40

Adding Commands

Time of First Successful Submission: 2025-11-03 23:34:09

Hijacking Commands

Time of First Successful Submission: 2025-11-03 23:36:10

Bashrc Backdoor

Time of First Successful Submission: 2025-11-04 15:15:16

Sniffing Input

Time of First Successful Submission: 2025-11-04 15:20:28

Overshared Directories

Time of First Successful Submission: 2025-11-05 00:14:24

Tricky Linking

Time of First Successful Submission: 2025-11-07 17:59:56

Sniffing Process Arguments

Time of First Successful Submission: 2025-11-08 00:20:21

Snooping on Configurations

Time of First Successful Submission: 2025-11-08 00:32:10

The Fork Bomb

Time of First Successful Submission: 2025-11-08 00:45:05

Disk-Space Doomsday

Time of First Successful Submission: 2025-11-08 00:49:15

rm -rf /

Time of First Successful Submission: 2025-11-08 00:55:27

Life after rm -rf /

Time of First Successful Submission: 2025-11-08 01:29:27

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-11-08 01:33:54


Computing 101

132 / 132 73 / 22036


Your First Register

Time of First Successful Submission: 2025-10-24 17:56:53

Your First Syscall

Time of First Successful Submission: 2025-10-24 17:59:36

Exit Codes

Time of First Successful Submission: 2025-10-24 18:01:41

Building Executables

Time of First Successful Submission: 2025-10-24 18:08:16

Moving Between Registers

Time of First Successful Submission: 2025-10-24 19:00:57

Loading From Memory

Time of First Successful Submission: 2025-11-09 22:44:09

More Loading Practice

Time of First Successful Submission: 2025-11-09 22:45:43

Dereferencing Pointers

Time of First Successful Submission: 2025-11-09 22:48:33

Dereferencing Yourself

Time of First Successful Submission: 2025-11-09 22:49:51

Dereferencing with Offsets

Time of First Successful Submission: 2025-11-09 22:51:42

Stored Addresses

Time of First Successful Submission: 2025-11-09 22:54:13

Double Dereference

Time of First Successful Submission: 2025-11-09 22:56:27

The Stack

Time of First Successful Submission: 2026-03-27 19:52:58

Stack Offsets

Time of First Successful Submission: 2026-03-27 19:54:19

Program Arguments on the Stack

Time of First Successful Submission: 2026-03-27 19:56:05

Popping From the Stack

Time of First Successful Submission: 2026-03-27 20:00:23

Negative Numbers

Time of First Successful Submission: 2026-07-06 21:08:31

Negative Numbers (16-bit)

Time of First Successful Submission: 2026-07-07 03:56:49

Negative Numbers (32-bit)

Time of First Successful Submission: 2026-07-08 04:00:10

Encoding Negatives

Time of First Successful Submission: 2026-07-08 04:08:49

Binary and Hex Encoding

Time of First Successful Submission: 2026-07-08 04:10:02

More Hex

Time of First Successful Submission: 2026-07-08 04:12:10

Decoding Hex

Time of First Successful Submission: 2026-07-08 04:13:07

Mixed Conversions

Time of First Successful Submission: 2026-07-08 04:23:18

Disassembling Programs

Time of First Successful Submission: 2026-03-27 20:26:41

Tracing Syscalls

Time of First Successful Submission: 2025-10-24 19:03:53

Starting GDB

Time of First Successful Submission: 2025-10-24 19:04:48

Quitting GDB

Time of First Successful Submission: 2026-03-27 20:31:26

Starting Programs in GDB

Time of First Successful Submission: 2025-10-24 19:06:44

Disassembling in GDB

Time of First Successful Submission: 2026-03-27 20:34:16

Stepping Through Instructions

Time of First Successful Submission: 2026-03-27 20:36:33

Reading Register Values

Time of First Successful Submission: 2026-03-27 20:37:57

Setting Register Values

Time of First Successful Submission: 2026-07-17 17:47:54

Popping Stack Values

Time of First Successful Submission: 2026-03-27 20:40:17

Examining Memory

Time of First Successful Submission: 2026-03-27 20:42:33

Examining Stack Pointers

Time of First Successful Submission: 2026-03-27 20:47:02

Cooperative Debugging

Time of First Successful Submission: 2026-03-27 20:51:19

Running with Arguments

Time of First Successful Submission: 2026-06-20 20:39:51

Redirecting Input in GDB

Time of First Successful Submission: 2026-07-05 04:56:42

Writing Output

Time of First Successful Submission: 2025-11-09 23:05:44

Chaining Syscalls

Time of First Successful Submission: 2025-11-09 23:17:50

Writing Strings

Time of First Successful Submission: 2025-11-09 23:20:18

Reading Data

Time of First Successful Submission: 2025-11-09 23:53:06

Reading Exactly

Time of First Successful Submission: 2026-06-20 20:57:17

Opening Files

Time of First Successful Submission: 2026-03-27 21:18:41

Hardcoding the Filename

Time of First Successful Submission: 2026-03-27 21:30:55

RIP-Relative Strings

Time of First Successful Submission: 2026-06-21 02:51:37

Comparing Values

Time of First Successful Submission: 2026-03-27 21:40:22

Comparing Characters

Time of First Successful Submission: 2026-03-27 21:42:47

Conditional Control Flow

Time of First Successful Submission: 2026-03-27 21:47:49

Comparing Strings

Time of First Successful Submission: 2026-04-05 18:20:11

Reverse the Password

Time of First Successful Submission: 2026-04-05 18:28:12

Conditionals Without Conditionals

Time of First Successful Submission: 2026-04-09 22:35:28

Recognizing Loops

Time of First Successful Submission: 2026-04-10 00:19:03

Writing Loops

Time of First Successful Submission: 2026-07-17 23:12:52

Writing From a Shared Library

Time of First Successful Submission: 2026-07-04 05:07:02

Returning a Value

Time of First Successful Submission: 2026-07-05 04:32:33

Calling Through a Pointer

Time of First Successful Submission: 2026-07-05 04:37:31

Calling Through a Pointer with an Argument

Time of First Successful Submission: 2026-07-05 04:38:58

Saving Caller-Saved Registers

Time of First Successful Submission: 2026-07-05 04:45:47

Saving Callee-Saved Registers

Time of First Successful Submission: 2026-07-05 04:50:16

Sign Extension

Time of First Successful Submission: 2026-07-08 17:46:15

Little-Endian Bytes

Time of First Successful Submission: 2026-07-08 22:37:23

Qword by Qword

Time of First Successful Submission: 2026-07-08 22:46:50

Dword by Dword

Time of First Successful Submission: 2026-07-08 22:54:22

Word by Word

Time of First Successful Submission: 2026-07-08 22:55:39

Byte by Byte

Time of First Successful Submission: 2026-07-08 22:57:53

Cracking a Struct

Time of First Successful Submission: 2026-07-08 23:01:40

Scrambled Struct

Time of First Successful Submission: 2026-07-08 23:04:10

Reverse the Calculation

Time of First Successful Submission: 2026-04-12 23:41:07

Reverse the Reverse

Time of First Successful Submission: 2026-04-12 23:42:40

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-04-12 23:45:05

Even or Odd

Time of First Successful Submission: 2026-07-05 05:12:00

Masking Bits

Time of First Successful Submission: 2026-07-05 05:15:34

Lowercase a String

Time of First Successful Submission: 2026-07-05 05:21:53

Uppercase a String

Time of First Successful Submission: 2026-07-05 05:28:59

Swap Case

Time of First Successful Submission: 2026-07-05 05:32:10

Shifting Left

Time of First Successful Submission: 2026-07-05 05:35:14

Shifting Right

Time of First Successful Submission: 2026-07-05 05:37:11

Loops on Data

Time of First Successful Submission: 2026-04-12 23:50:49

Reaching Into the Caller's Frame

Time of First Successful Submission: 2026-07-08 23:26:40

Loading Stale Stack Data

Time of First Successful Submission: 2026-07-09 00:09:47

Stealing Stale Stack Data

Time of First Successful Submission: 2026-07-11 15:38:56

Reserving Your Own Frame

Time of First Successful Submission: 2026-07-13 18:08:51

Using Your Own Frame

Time of First Successful Submission: 2026-07-13 19:53:03

Environment Variables on the Stack

Time of First Successful Submission: 2026-07-15 22:32:39

Aligning the Stack Through the Environment

Time of First Successful Submission: 2026-07-15 22:38:38

Aligning the Stack Through GDB

Time of First Successful Submission: 2026-07-15 22:41:09

Aligning the Stack Through GDB, Generalized

Time of First Successful Submission: 2026-07-16 20:48:00

A Single Digit

Time of First Successful Submission: 2026-07-17 23:41:51

Two Digits

Time of First Successful Submission: 2026-07-17 23:49:04

String to Integer

Time of First Successful Submission: 2026-07-17 23:57:11

Negative Numbers

Time of First Successful Submission: 2026-07-18 00:00:52

Where the Number Ends

Time of First Successful Submission: 2026-07-18 00:17:53

A Whole Program

Time of First Successful Submission: 2026-07-18 00:23:16

A Single Digit, Back to Text

Time of First Successful Submission: 2026-07-18 00:30:15

Divide and Remainder

Time of First Successful Submission: 2026-07-19 00:30:25

Drop the Leading Zero

Time of First Successful Submission: 2026-07-19 16:12:01

Integer to String

Time of First Successful Submission: 2026-07-19 16:44:19

Negative Numbers, Back to Text

Time of First Successful Submission: 2026-07-19 17:20:10

Sum Them All

Time of First Successful Submission: 2026-07-19 19:09:05

Addition

Time of First Successful Submission: 2026-07-20 01:19:58

Subtraction

Time of First Successful Submission: 2026-07-20 17:11:01

Multiplication

Time of First Successful Submission: 2026-07-20 17:16:04

Bitwise Operators

Time of First Successful Submission: 2026-07-20 17:20:36

Unary Operators

Time of First Successful Submission: 2026-07-20 17:44:07

Literal Output

Time of First Successful Submission: 2026-07-21 00:20:05

Newline Escapes

Time of First Successful Submission: 2026-07-21 00:32:50

Escaped Syntax

Time of First Successful Submission: 2026-07-21 00:43:44

Decimal Markers

Time of First Successful Submission: 2026-07-21 14:01:12

Multiple Decimal Markers

Time of First Successful Submission: 2026-07-21 14:07:45

String Markers

Time of First Successful Submission: 2026-07-21 14:24:29

Hex Byte Escapes

Time of First Successful Submission: 2026-07-21 15:34:39

Debugging Programs

Time of First Successful Submission: 2025-11-21 19:35:18

Inspecting Registers

Time of First Successful Submission: 2025-11-21 19:36:48

Examining Memory

Time of First Successful Submission: 2025-11-21 19:48:29

Setting Breakpoints

Time of First Successful Submission: 2025-11-21 21:21:02

GDB Scripting

Time of First Successful Submission: 2025-11-22 20:58:55

Modifying Data

Time of First Successful Submission: 2025-11-30 04:18:59

Modifying Execution

Time of First Successful Submission: 2025-12-07 04:54:18

Broken Functions

Time of First Successful Submission: 2025-12-25 17:08:35

Exit

Time of First Successful Submission: 2025-11-23 23:45:37

Socket

Time of First Successful Submission: 2025-11-24 20:44:51

Bind

Time of First Successful Submission: 2025-12-28 03:46:48

Listen

Time of First Successful Submission: 2025-12-29 05:33:40

Accept

Time of First Successful Submission: 2025-12-29 05:39:14

Static Response

Time of First Successful Submission: 2025-12-30 04:21:08

Dynamic Response

Time of First Successful Submission: 2026-05-25 18:31:58

Iterative GET Server

Time of First Successful Submission: 2026-05-25 18:45:13

Concurrent GET Server

Time of First Successful Submission: 2026-05-25 19:00:50

Concurrent POST Server

Time of First Successful Submission: 2026-05-25 20:23:20

Web Server

Time of First Successful Submission: 2026-06-20 20:32:07


Playing With Programs

116 / 116 1144 / 24968


What's the password?

Time of First Successful Submission: 2025-10-24 21:41:38

... and again!

Time of First Successful Submission: 2025-10-24 21:42:55

Newline Troubles

Time of First Successful Submission: 2025-10-24 21:48:30

Reasoning about files

Time of First Successful Submission: 2025-10-24 21:54:32

Specifying Filenames

Time of First Successful Submission: 2025-10-24 21:55:57

Binary and Hex Encoding

Time of First Successful Submission: 2025-10-24 22:08:38

More Hex

Time of First Successful Submission: 2025-10-24 22:10:43

Decoding Hex

Time of First Successful Submission: 2026-07-22 22:57:39

Decoding Practice

Time of First Successful Submission: 2026-07-22 23:10:34

Encoding Practice

Time of First Successful Submission: 2026-07-22 23:18:41

Hex-encoding ASCII

Time of First Successful Submission: 2026-07-22 23:30:48

Nested Encoding

Time of First Successful Submission: 2026-07-22 23:49:04

Hex-encoding UTF-8

Time of First Successful Submission: 2026-07-23 00:02:03

UTF Mixups

Time of First Successful Submission: 2026-07-23 00:24:17

Modifying Encoded Data

Time of First Successful Submission: 2026-07-24 18:04:54

Decoding Base64

Time of First Successful Submission: 2026-07-24 18:16:09

Encoding Base64

Time of First Successful Submission: 2026-07-24 18:30:47

Dealing with Obfuscation

Time of First Successful Submission: 2026-07-24 18:44:31

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-07-27 01:39:21

Your First HTTP Request

Time of First Successful Submission: 2026-08-06 19:53:15

Reading Flask

Time of First Successful Submission: 2026-08-06 19:55:20

Commented Data

Time of First Successful Submission: 2026-08-06 19:57:58

HTTP Metadata

Time of First Successful Submission: 2026-08-06 20:04:09

HTTP (netcat)

Time of First Successful Submission: 2026-08-07 18:19:23

HTTP Paths (netcat)

Time of First Successful Submission: 2026-08-07 18:20:35

HTTP (curl)

Time of First Successful Submission: 2026-08-07 18:24:06

HTTP (python)

Time of First Successful Submission: 2026-08-07 18:27:29

HTTP Host Header (python)

Time of First Successful Submission: 2026-08-07 18:40:23

HTTP Host Header (curl)

Time of First Successful Submission: 2026-08-07 22:52:05

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-08-07 22:58:34

URL Encoding (netcat)

Time of First Successful Submission: 2026-08-07 23:04:34

HTTP GET Parameters

Time of First Successful Submission: 2026-08-07 23:09:12

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-08-07 23:17:21

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-08-07 23:19:26

HTTP Forms

Time of First Successful Submission: 2026-08-07 23:24:32

HTTP Forms (curl)

Time of First Successful Submission: 2026-08-07 23:26:04

HTTP Forms (netcat)

Time of First Successful Submission: 2026-08-07 23:34:46

HTTP Forms (python)

Time of First Successful Submission: 2026-08-07 23:39:06

HTTP Forms Without Forms

Time of First Successful Submission: 2026-08-07 23:47:11

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-08-07 23:52:35

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-08-07 23:55:39

HTTP Redirects (netcat)

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

HTTP Redirects (curl)

Time of First Successful Submission: 2026-08-08 00:09:15

HTTP Redirects (python)

Time of First Successful Submission: 2026-08-08 00:10:12

HTTP Cookies (curl)

Time of First Successful Submission: 2026-08-08 00:19:09

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-08-08 00:23:02

HTTP Cookies (python)

Time of First Successful Submission: 2026-08-08 00:24:39

Server State (python)

Time of First Successful Submission: 2026-08-08 22:02:43

Listening Web

Time of First Successful Submission: 2026-08-08 22:12:45

Speaking Redirects

Time of First Successful Submission: 2026-08-11 00:01:18

JavaScript Redirects

Time of First Successful Submission: 2026-08-12 15:20:42

Including JavaScript

Time of First Successful Submission: 2026-08-12 16:37:53

HTTP (javascript)

Time of First Successful Submission: 2026-08-12 17:18:50

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-08-12 17:33:49

HTTP Forms (javascript)

Time of First Successful Submission: 2026-08-15 03:30:28

cat

Time of First Successful Submission: 2026-07-31 22:24:40

more

Time of First Successful Submission: 2026-07-31 22:25:01

less

Time of First Successful Submission: 2026-07-31 22:25:15

tail

Time of First Successful Submission: 2026-07-31 22:25:31

head

Time of First Successful Submission: 2026-07-31 22:25:43

sort

Time of First Successful Submission: 2026-07-31 22:25:56

vim

Time of First Successful Submission: 2026-07-31 22:26:12

emacs

Time of First Successful Submission: 2026-07-31 22:26:25

nano

Time of First Successful Submission: 2026-07-31 22:26:56

rev

Time of First Successful Submission: 2026-07-31 22:27:56

od

Time of First Successful Submission: 2026-07-31 22:33:21

hd

Time of First Successful Submission: 2026-07-31 22:55:19

xxd

Time of First Successful Submission: 2026-07-31 23:00:41

base32

Time of First Successful Submission: 2026-07-31 23:08:01

base64

Time of First Successful Submission: 2026-07-31 23:08:21

split

Time of First Successful Submission: 2026-07-31 23:11:42

gzip

Time of First Successful Submission: 2026-07-31 23:16:34

bzip2

Time of First Successful Submission: 2026-07-31 23:18:17

zip

Time of First Successful Submission: 2026-08-03 03:05:11

tar

Time of First Successful Submission: 2026-08-03 18:02:41

ar

Time of First Successful Submission: 2026-08-03 18:08:33

cpio

Time of First Successful Submission: 2026-08-03 18:13:48

genisoimage

Time of First Successful Submission: 2026-08-03 18:15:49

env

Time of First Successful Submission: 2026-08-03 18:19:41

find

Time of First Successful Submission: 2026-08-03 18:24:50

make

Time of First Successful Submission: 2026-08-03 18:35:16

nice

Time of First Successful Submission: 2026-08-03 18:41:46

timeout

Time of First Successful Submission: 2026-08-03 18:42:51

stdbuf

Time of First Successful Submission: 2026-08-03 18:44:35

setarch

Time of First Successful Submission: 2026-08-03 18:46:15

watch

Time of First Successful Submission: 2026-08-03 18:47:11

socat

Time of First Successful Submission: 2026-08-03 18:48:53

whiptail

Time of First Successful Submission: 2026-08-03 19:11:14

awk

Time of First Successful Submission: 2026-08-03 19:12:09

sed

Time of First Successful Submission: 2026-08-03 19:14:05

ed

Time of First Successful Submission: 2026-08-03 19:15:26

chown

Time of First Successful Submission: 2026-08-03 19:16:41

chmod

Time of First Successful Submission: 2026-08-03 19:15:46

cp

Time of First Successful Submission: 2026-08-03 23:34:53

mv

Time of First Successful Submission: 2026-08-03 23:40:03

perl

Time of First Successful Submission: 2026-08-03 23:48:57

python

Time of First Successful Submission: 2026-08-03 23:50:23

ruby

Time of First Successful Submission: 2026-08-03 23:51:07

bash

Time of First Successful Submission: 2026-08-03 23:58:55

date

Time of First Successful Submission: 2026-08-04 00:06:50

dmesg

Time of First Successful Submission: 2026-08-04 00:08:09

wc

Time of First Successful Submission: 2026-08-04 00:19:27

gcc

Time of First Successful Submission: 2026-08-04 23:13:00

as

Time of First Successful Submission: 2026-08-04 23:13:22

wget

Time of First Successful Submission: 2026-08-04 23:47:37

ssh-keygen

Time of First Successful Submission: 2026-08-05 00:55:20

SQL Queries

Time of First Successful Submission: 2026-07-27 19:15:18

Filtering SQL

Time of First Successful Submission: 2026-07-29 13:36:00

Choosing Columns

Time of First Successful Submission: 2026-07-30 23:26:04

Exclusionary Filtering

Time of First Successful Submission: 2026-07-31 21:06:15

Filtering Strings

Time of First Successful Submission: 2026-07-31 21:23:35

Filtering on Expressions

Time of First Successful Submission: 2026-07-31 22:02:24

SELECTing Expressions

Time of First Successful Submission: 2026-07-31 22:11:30

Composite Conditions

Time of First Successful Submission: 2026-07-31 22:15:17

Reaching Your LIMITs

Time of First Successful Submission: 2026-07-31 22:21:08

Querying Metadata

Time of First Successful Submission: 2026-07-31 22:23:35


DSU Cyber Camps

12 / 104 1895 / 55678


Using the Terminal

Time of First Successful Submission: 2025-10-23 20:15:09

Using the VSCode Workspace

Time of First Successful Submission: 2025-10-23 20:16:57

Using the GUI Desktop

Time of First Successful Submission: 2025-10-23 20:19:04

Pasting into the Desktop

Time of First Successful Submission: 2025-10-23 20:23:50

Connecting over SSH

Time of First Successful Submission: 2026-02-28 22:24:53

Restarting Challenges

Time of First Successful Submission: 2025-10-23 20:25:46

Getting Help

Time of First Successful Submission: 2025-10-23 20:28:54

Challenge Programs

Time of First Successful Submission: 2025-10-23 20:33:51

The Flag File

Time of First Successful Submission: 2025-10-23 20:36:21

Using Privileged Mode

Time of First Successful Submission: 2025-10-23 20:44:29

Persistent Home Directories - One

Time of First Successful Submission: 2025-10-23 20:49:47

Persistent Home Directories - Two

Time of First Successful Submission: 2025-10-23 20:52:49


GCA CTF

12 / 104 1895 / 55677


Using the Terminal

Time of First Successful Submission: 2025-10-23 20:15:09

Using the VSCode Workspace

Time of First Successful Submission: 2025-10-23 20:16:57

Using the GUI Desktop

Time of First Successful Submission: 2025-10-23 20:19:04

Pasting into the Desktop

Time of First Successful Submission: 2025-10-23 20:23:50

Connecting over SSH

Time of First Successful Submission: 2026-02-28 22:24:53

Restarting Challenges

Time of First Successful Submission: 2025-10-23 20:25:46

Getting Help

Time of First Successful Submission: 2025-10-23 20:28:54

Challenge Programs

Time of First Successful Submission: 2025-10-23 20:33:51

The Flag File

Time of First Successful Submission: 2025-10-23 20:36:21

Using Privileged Mode

Time of First Successful Submission: 2025-10-23 20:44:29

Persistent Home Directories - One

Time of First Successful Submission: 2025-10-23 20:49:47

Persistent Home Directories - Two

Time of First Successful Submission: 2025-10-23 20:52:49