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Intro to Cybersecurity

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Your First Overflow (easy)

Time of First Successful Submission: 2025-04-24 12:45:31

Program Security

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level1.0

Time of First Successful Submission: 2024-12-04 09:06:59

level1.1

Time of First Successful Submission: 2024-12-04 09:24:17

level2.0

Time of First Successful Submission: 2024-12-04 10:47:59

level2.1

Time of First Successful Submission: 2024-12-04 10:55:09

level3.0

Time of First Successful Submission: 2024-12-04 11:18:28

level3.1

Time of First Successful Submission: 2024-12-04 11:51:54

Software Exploitation

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Level1.0

Time of First Successful Submission: 2025-04-28 10:01:37

Level1.1

Time of First Successful Submission: 2025-04-28 10:42:46

Level2.0

Time of First Successful Submission: 2025-04-28 13:03:11

Level2.1

Time of First Successful Submission: 2025-04-28 13:07:05

Getting Started

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Using the VSCode Workspace

Time of First Successful Submission: 2024-07-21 03:34:00

Using the GUI Desktop

Time of First Successful Submission: 2024-07-23 10:51:03

Pasting into the Desktop

Time of First Successful Submission: 2024-07-23 10:58:19

Restarting Challenges

Time of First Successful Submission: 2024-07-21 03:42:35

Getting Help

Time of First Successful Submission: 2024-12-03 14:46:12

Challenge Programs

Time of First Successful Submission: 2024-07-23 11:00:50

The Flag File

Time of First Successful Submission: 2024-07-23 11:03:48

Using Practice Mode

Time of First Successful Submission: 2024-12-03 14:51:15

Persistent Home Directories - One

Time of First Successful Submission: 2024-12-03 14:54:31

Persistent Home Directories - Two

Time of First Successful Submission: 2024-12-03 14:55:12

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2024-07-25 21:37:16

Intro to Arguments

Time of First Successful Submission: 2024-07-25 21:36:18

The Root

Time of First Successful Submission: 2024-07-25 21:40:30

Program and absolute paths

Time of First Successful Submission: 2024-07-25 21:43:16

Position thy self

Time of First Successful Submission: 2024-07-25 21:46:11

Position elsewhere

Time of First Successful Submission: 2024-07-25 21:47:37

Position yet elsewhere

Time of First Successful Submission: 2024-07-25 21:48:34

implicit relative paths, from /

Time of First Successful Submission: 2024-12-03 15:03:48

explicit relative paths, from /

Time of First Successful Submission: 2024-12-03 15:07:07

implicit relative path

Time of First Successful Submission: 2024-12-03 15:07:56

home sweet home

Time of First Successful Submission: 2025-05-08 11:56:12

cat: not the pet, but the command!

Time of First Successful Submission: 2025-05-08 12:00:33

catting absolute paths

Time of First Successful Submission: 2025-05-08 12:00:53

more catting practice

Time of First Successful Submission: 2025-05-10 10:59:57

grepping for a needle in a haystack

Time of First Successful Submission: 2025-05-08 12:04:22

listing files

Time of First Successful Submission: 2025-05-08 12:04:47

touching files

Time of First Successful Submission: 2025-05-08 12:05:37

removing files

Time of First Successful Submission: 2025-05-08 12:06:04

hidden files

Time of First Successful Submission: 2025-05-08 12:06:27

An Epic Filesystem Quest

Time of First Successful Submission: 2025-05-10 11:08:51

making directories

Time of First Successful Submission: 2025-05-10 11:10:22

finding files

Time of First Successful Submission: 2025-05-10 11:13:00

linking files

Time of First Successful Submission: 2025-05-10 11:16:51

Learning From Documentation

Time of First Successful Submission: 2025-05-10 11:19:17

Learning Complex Usage

Time of First Successful Submission: 2025-05-10 11:21:38

Reading Manuals

Time of First Successful Submission: 2025-05-10 11:25:16

Searching Manuals

Time of First Successful Submission: 2025-05-10 11:27:46

Searching For Manuals

Time of First Successful Submission: 2025-05-10 11:32:01

Helpful Programs

Time of First Successful Submission: 2025-05-10 11:33:51

Help for Builtins

Time of First Successful Submission: 2025-05-10 11:38:32

Matching with *

Time of First Successful Submission: 2025-05-10 11:44:48

Matching with ?

Time of First Successful Submission: 2025-05-10 11:48:18

Matching with []

Time of First Successful Submission: 2025-05-10 11:52:34

Matching paths with []

Time of First Successful Submission: 2025-05-10 11:53:37

Mixing globs

Time of First Successful Submission: 2025-05-10 12:34:23

Exclusionary globbing

Time of First Successful Submission: 2025-05-10 12:35:19

Redirecting output

Time of First Successful Submission: 2025-05-10 12:37:38

Redirecting more output

Time of First Successful Submission: 2025-05-10 12:40:58

Appending output

Time of First Successful Submission: 2025-05-10 12:43:09

Redirecting errors

Time of First Successful Submission: 2025-05-10 12:45:14

Redirecting input

Time of First Successful Submission: 2025-05-10 12:46:15

Grepping stored results

Time of First Successful Submission: 2025-05-10 12:47:14

Grepping live output

Time of First Successful Submission: 2025-05-10 12:47:58

Grepping errors

Time of First Successful Submission: 2025-05-10 12:48:38

Duplicating piped data with tee

Time of First Successful Submission: 2025-05-10 12:50:33

Writing to multiple programs

Time of First Successful Submission: 2025-05-10 12:52:06

Split-piping stderr and stdout

Time of First Successful Submission: 2025-05-10 12:52:52

Printing Variables

Time of First Successful Submission: 2025-05-11 20:29:53

Setting Variables

Time of First Successful Submission: 2025-05-11 20:30:40

Multi-word Variables

Time of First Successful Submission: 2025-05-11 20:31:25

Exporting Variables

Time of First Successful Submission: 2025-05-11 20:37:04

Printing Exported Variables

Time of First Successful Submission: 2025-05-11 20:37:58

Storing Command Output

Time of First Successful Submission: 2025-05-11 20:41:35

Reading Input

Time of First Successful Submission: 2025-05-11 20:42:58

Reading Files

Time of First Successful Submission: 2025-05-11 20:44:16

Listing Processes

Time of First Successful Submission: 2025-05-12 01:58:38

Killing Processes

Time of First Successful Submission: 2025-05-12 02:00:30

Interrupting Processes

Time of First Successful Submission: 2025-05-12 02:01:32

Suspending Processes

Time of First Successful Submission: 2025-05-12 02:02:23

Resuming Processes

Time of First Successful Submission: 2025-05-12 02:03:14

Backgrounding Processes

Time of First Successful Submission: 2025-05-12 02:08:32

Foregrounding Processes

Time of First Successful Submission: 2025-05-12 02:11:29

Starting Backgrounded Processes

Time of First Successful Submission: 2025-05-12 02:12:18

Process Exit Codes

Time of First Successful Submission: 2025-05-12 02:14:07

Changing File Ownership

Time of First Successful Submission: 2025-05-12 02:18:37

Groups and Files

Time of First Successful Submission: 2025-05-12 02:20:13

Fun With Groups Names

Time of First Successful Submission: 2025-05-12 02:21:43

Changing Permissions

Time of First Successful Submission: 2025-05-12 02:24:52

Executable Files

Time of First Successful Submission: 2025-05-12 02:25:38

Permission Tweaking Practice

Time of First Successful Submission: 2025-05-12 02:35:07

Permissions Setting Practice

Time of First Successful Submission: 2025-05-12 02:41:36

The SUID Bit

Time of First Successful Submission: 2025-05-12 02:45:18

Becoming root with su

Time of First Successful Submission: 2025-05-12 02:47:56

Other users with su

Time of First Successful Submission: 2025-05-12 02:49:04

Cracking passwords

Time of First Successful Submission: 2025-05-12 02:53:50

Using sudo

Time of First Successful Submission: 2025-05-12 02:55:17

Chaining with Semicolons

Time of First Successful Submission: 2025-05-12 02:56:59

Your First Shell Script

Time of First Successful Submission: 2025-05-12 02:58:53

Redirecting Script Output

Time of First Successful Submission: 2025-05-12 03:04:25

Executable Shell Scripts

Time of First Successful Submission: 2025-05-12 03:05:41

The PATH Variable

Time of First Successful Submission: 2025-05-12 03:08:25

Setting PATH

Time of First Successful Submission: 2025-05-12 03:10:04

Adding Commands

Time of First Successful Submission: 2025-05-12 03:38:57

Hijacking Commands

Time of First Successful Submission: 2025-05-12 03:37:47

Computing 101

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Your First Register

Time of First Successful Submission: 2025-04-29 02:39:19

Your First Syscall

Time of First Successful Submission: 2025-04-29 02:42:27

Exit Codes

Time of First Successful Submission: 2025-04-29 02:45:08

Building Executables

Time of First Successful Submission: 2025-04-29 02:55:33

Moving Between Registers

Time of First Successful Submission: 2025-04-29 03:02:44

Tracing Syscalls

Time of First Successful Submission: 2025-04-29 03:07:11

Starting GDB

Time of First Successful Submission: 2025-04-29 03:08:41

Starting Programs in GDB

Time of First Successful Submission: 2025-04-29 03:09:24

Loading From Memory

Time of First Successful Submission: 2025-04-29 03:22:00

More Loading Practice

Time of First Successful Submission: 2025-04-29 03:28:17

Dereferencing Pointers

Time of First Successful Submission: 2025-04-29 03:31:48

Dereferencing Yourself

Time of First Successful Submission: 2025-04-29 03:33:53

Dereferencing with Offsets

Time of First Successful Submission: 2025-04-29 03:37:23

Stored Addresses

Time of First Successful Submission: 2025-04-29 03:57:14

Double Dereference

Time of First Successful Submission: 2025-04-29 04:07:55

Triple Dereference

Time of First Successful Submission: 2025-04-29 04:11:12

Writing Output

Time of First Successful Submission: 2025-04-29 12:13:25

Chaining Syscalls

Time of First Successful Submission: 2025-04-29 12:16:30

Writing Strings

Time of First Successful Submission: 2025-04-29 12:17:39

Reading Data

Time of First Successful Submission: 2025-04-29 12:21:05

set-register

Time of First Successful Submission: 2025-04-29 19:05:33

set-multiple-registers

Time of First Successful Submission: 2025-04-29 19:07:26

add-to-register

Time of First Successful Submission: 2025-04-29 19:12:52

linear-equation-registers

Time of First Successful Submission: 2025-04-29 19:35:59

integer-division

Time of First Successful Submission: 2025-04-30 02:00:12

modulo-operation

Time of First Successful Submission: 2025-04-30 02:06:54

set-upper-byte

Time of First Successful Submission: 2025-04-30 02:10:23

efficient-modulo

Time of First Successful Submission: 2025-04-30 02:17:59

byte-extraction

Time of First Successful Submission: 2025-04-30 09:05:27

bitwise-and

Time of First Successful Submission: 2025-04-30 09:16:43

check-even

Time of First Successful Submission: 2025-04-30 09:26:13

memory-read

Time of First Successful Submission: 2025-04-30 09:39:43

memory-write

Time of First Successful Submission: 2025-04-30 09:45:40

memory-increment

Time of First Successful Submission: 2025-04-30 10:55:57

byte-access

Time of First Successful Submission: 2025-04-30 10:59:38

memory-size-access

Time of First Successful Submission: 2025-04-30 11:03:12

little-endian-write

Time of First Successful Submission: 2025-04-30 11:09:05

memory-sum

Time of First Successful Submission: 2025-04-30 19:18:32

stack-subtraction

Time of First Successful Submission: 2025-04-30 19:24:21

swap-stack-values

Time of First Successful Submission: 2025-04-30 19:27:56

average-stack-values

Time of First Successful Submission: 2025-04-30 19:34:47

absolute-jump

Time of First Successful Submission: 2025-04-30 19:41:04

relative-jump

Time of First Successful Submission: 2025-04-30 19:58:01

jump-trampoline

Time of First Successful Submission: 2025-05-01 02:01:02

conditional-jump

Time of First Successful Submission: 2025-05-01 02:16:21

indirect-jump

Time of First Successful Submission: 2025-05-01 02:22:33

average-loop

Time of First Successful Submission: 2025-05-01 02:28:43

count-non-zero

Time of First Successful Submission: 2025-05-01 02:33:09

string-lower

Time of First Successful Submission: 2025-05-01 02:43:27

most-common-byte

Time of First Successful Submission: 2025-05-01 02:52:43

level1

Time of First Successful Submission: 2025-05-01 04:04:21

level2

Time of First Successful Submission: 2025-05-01 04:05:13

level3

Time of First Successful Submission: 2025-05-01 04:16:12

level4

Time of First Successful Submission: 2025-05-01 04:25:09

level5

Time of First Successful Submission: 2025-05-01 04:33:26

level6

Time of First Successful Submission: 2025-05-01 04:40:27

level7

Time of First Successful Submission: 2025-05-01 04:40:59

level8

Time of First Successful Submission: 2025-05-01 04:43:48

Exit

Time of First Successful Submission: 2025-05-01 11:41:37

Socket

Time of First Successful Submission: 2025-05-01 22:46:56

Bind

Time of First Successful Submission: 2025-05-02 11:57:13

Listen

Time of First Successful Submission: 2025-05-02 11:58:06

Accept

Time of First Successful Submission: 2025-05-02 11:58:56

Static Response

Time of First Successful Submission: 2025-05-02 11:59:50

Dynamic Response

Time of First Successful Submission: 2025-05-02 12:00:51

Iterative GET Server

Time of First Successful Submission: 2025-05-02 12:01:51

Concurrent GET Server

Time of First Successful Submission: 2025-05-02 12:02:50

Concurrent POST Server

Time of First Successful Submission: 2025-05-10 13:09:11

Web Server

Time of First Successful Submission: 2025-05-10 13:06:56

Playing With Programs

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What's the password?

Time of First Successful Submission: 2025-05-03 10:55:40

... and again!

Time of First Successful Submission: 2025-05-03 10:56:07

Newline Troubles

Time of First Successful Submission: 2025-05-03 11:01:44

Reasoning about files

Time of First Successful Submission: 2025-05-03 11:04:31

Specifying Filenames

Time of First Successful Submission: 2025-05-03 11:07:23

Binary and Hex Encoding

Time of First Successful Submission: 2025-05-03 11:18:24

More Hex

Time of First Successful Submission: 2025-05-03 11:22:26

Decoding Hex

Time of First Successful Submission: 2025-05-12 12:39:50

Decoding Practice

Time of First Successful Submission: 2025-05-12 12:44:16

Encoding Practice

Time of First Successful Submission: 2025-05-13 11:42:46

cat

Time of First Successful Submission: 2024-07-25 22:21:07

more

Time of First Successful Submission: 2024-07-25 22:22:24

less

Time of First Successful Submission: 2024-07-25 22:23:31

tail

Time of First Successful Submission: 2025-05-03 11:30:21

head

Time of First Successful Submission: 2025-05-03 11:30:54

sort

Time of First Successful Submission: 2025-05-03 11:31:08

vim

Time of First Successful Submission: 2025-05-03 11:31:32

emacs

Time of First Successful Submission: 2025-05-03 11:31:49

nano

Time of First Successful Submission: 2025-05-03 11:32:09

rev

Time of First Successful Submission: 2025-05-03 11:33:15