CICADA_V

🐧 💻 🔤

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-07-24 01:43:44

Command Arguments

Time of First Successful Submission: 2026-07-24 01:44:41

Command History

Time of First Successful Submission: 2026-07-24 01:45:50

The Root Path

Time of First Successful Submission: 2026-07-24 01:47:52

Absolute Paths

Time of First Successful Submission: 2026-07-24 01:48:10

Changing position

Time of First Successful Submission: 2026-07-24 01:49:23

Changing to an Absolute Path

Time of First Successful Submission: 2026-07-24 01:51:26

Relative Paths

Time of First Successful Submission: 2026-07-24 01:52:08

Cat

Time of First Successful Submission: 2026-07-24 02:07:45

Ls

Time of First Successful Submission: 2026-07-24 02:10:46

Ls All

Time of First Successful Submission: 2026-07-24 02:11:04

Find

Time of First Successful Submission: 2026-07-24 02:12:31

Piping Echo

Time of First Successful Submission: 2026-07-24 04:22:18

Piping Stdout

Time of First Successful Submission: 2026-07-24 04:17:33

Piping Stdin

Time of First Successful Submission: 2026-07-24 04:18:23


Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2026-07-24 20:02:09

Path Traversal 2

Time of First Successful Submission: 2026-07-24 20:10:59

CMDi 1

Time of First Successful Submission: 2026-07-24 20:11:58

CMDi 2

Time of First Successful Submission: 2026-07-24 20:13:56

CMDi 3

Time of First Successful Submission: 2026-07-24 20:14:56

CMDi 4

Time of First Successful Submission: 2026-07-24 20:16:00

CMDi 5

Time of First Successful Submission: 2026-07-24 20:17:21

CMDi 6

Time of First Successful Submission: 2026-07-24 20:18:25

Authentication Bypass 1

Time of First Successful Submission: 2026-07-24 20:19:40

Authentication Bypass 2

Time of First Successful Submission: 2026-07-24 20:20:37

SQLi 1

Time of First Successful Submission: 2026-07-24 20:22:01

SQLi 2

Time of First Successful Submission: 2026-07-24 20:23:28

SQLi 3

Time of First Successful Submission: 2026-07-24 20:24:46

SQLi 4

Time of First Successful Submission: 2026-07-24 20:26:20

SQLi 5

Time of First Successful Submission: 2026-07-24 20:28:18

XSS 1

Time of First Successful Submission: 2026-07-24 20:30:00

XSS 2

Time of First Successful Submission: 2026-07-24 20:31:14

XSS 3

Time of First Successful Submission: 2026-07-24 20:32:57

XSS 4

Time of First Successful Submission: 2026-07-24 20:34:18

XSS 5

Time of First Successful Submission: 2026-07-24 20:37:08

XSS 6

Time of First Successful Submission: 2026-07-24 20:38:32

XSS 7

Time of First Successful Submission: 2026-07-24 21:07:33

CSRF 1

Time of First Successful Submission: 2026-07-24 21:18:46

CSRF 2

Time of First Successful Submission: 2026-07-24 21:20:27

CSRF 3

Time of First Successful Submission: 2026-07-24 21:22:05

CSRF 4

Time of First Successful Submission: 2026-07-24 21:25:18

CSRF 5

Time of First Successful Submission: 2026-07-24 21:28:30

Connect

Time of First Successful Submission: 2026-07-24 21:34:35

Send

Time of First Successful Submission: 2026-07-24 21:35:58

Shutdown

Time of First Successful Submission: 2026-07-24 21:37:00

Listen

Time of First Successful Submission: 2026-07-24 21:37:55

Scan 1

Time of First Successful Submission: 2026-07-24 21:40:22

Scan 2

Time of First Successful Submission: 2026-07-24 22:10:23

Monitor 1

Time of First Successful Submission: 2026-07-24 22:13:29

Monitor 2

Time of First Successful Submission: 2026-07-24 22:17:42

Sniffing Cookies

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

Network Configuration

Time of First Successful Submission: 2026-07-24 22:25:15

Firewall 1

Time of First Successful Submission: 2026-07-24 22:26:25

Firewall 2

Time of First Successful Submission: 2026-07-24 23:00:18

Firewall 3

Time of First Successful Submission: 2026-07-24 23:04:17

Denial of Service 1

Time of First Successful Submission: 2026-07-24 23:18:30

Denial of Service 2

Time of First Successful Submission: 2026-07-24 23:21:38

Ethernet

Time of First Successful Submission: 2026-07-25 00:18:41

IP

Time of First Successful Submission: 2026-07-25 00:19:59

TCP

Time of First Successful Submission: 2026-07-25 00:21:13

TCP Handshake

Time of First Successful Submission: 2026-07-25 00:22:36

UDP

Time of First Successful Submission: 2026-07-25 00:23:35

UDP 2

Time of First Successful Submission: 2026-07-25 00:25:03

UDP Spoofing 2

Time of First Successful Submission: 2026-07-25 01:01:10

ARP

Time of First Successful Submission: 2026-07-25 01:32:26

XOR

Time of First Successful Submission: 2026-07-25 02:03:49

XORing Hex

Time of First Successful Submission: 2026-07-25 02:04:56

XORing ASCII

Time of First Successful Submission: 2026-07-25 02:13:54

XORing ASCII Strings

Time of First Successful Submission: 2026-07-25 02:18:02

One-time Pad

Time of First Successful Submission: 2026-07-25 02:18:59

One-time Pad Tampering

Time of First Successful Submission: 2026-07-25 02:20:26

Many-time Pad

Time of First Successful Submission: 2026-07-25 02:21:34

AES

Time of First Successful Submission: 2026-07-25 02:22:37

AES-ECB-CPA

Time of First Successful Submission: 2026-07-25 02:53:11

AES-ECB-CPA-HTTP

Time of First Successful Submission: 2026-07-25 02:56:22

AES-ECB-CPA-HTTP (base64)

Time of First Successful Submission: 2026-07-25 02:59:29

AES-ECB-CPA-Suffix

Time of First Successful Submission: 2026-07-25 03:09:48

AES-ECB-CPA-Prefix

Time of First Successful Submission: 2026-07-25 03:11:34

AES-ECB-CPA-Prefix-2

Time of First Successful Submission: 2026-07-25 03:12:54

AES-ECB-CPA-Prefix-Miniboss

Time of First Successful Submission: 2026-07-25 03:15:40

AES-ECB-CPA-Prefix-Boss

Time of First Successful Submission: 2026-07-25 03:22:05

AES-CBC

Time of First Successful Submission: 2026-07-25 03:19:14

AES-CBC Tampering

Time of First Successful Submission: 2026-07-25 03:23:33

AES-CBC Resizing

Time of First Successful Submission: 2026-07-25 03:25:28

AES-CBC-POA-Partial-Block

Time of First Successful Submission: 2026-07-25 03:30:35

AES-CBC-POA-Full-Block

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AES-CBC-POA-Multi-Block

Time of First Successful Submission: 2026-07-25 04:02:19

AES-CBC-POA-Encrypt

Time of First Successful Submission: 2026-07-25 04:26:30

AES-CBC-POA-Encrypt-2

Time of First Successful Submission: 2026-07-25 04:40:42

DHKE

Time of First Successful Submission: 2026-07-25 04:43:54

DHKE-to-AES

Time of First Successful Submission: 2026-07-25 04:45:03

RSA 1

Time of First Successful Submission: 2026-07-25 04:49:52

RSA 2

Time of First Successful Submission: 2026-07-25 04:50:56

RSA 3

Time of First Successful Submission: 2026-07-25 04:53:13

RSA 4

Time of First Successful Submission: 2026-07-25 04:55:31

RSA Signatures

Time of First Successful Submission: 2026-07-25 04:57:13

SHA 1

Time of First Successful Submission: 2026-07-25 05:00:05

SHA 2

Time of First Successful Submission: 2026-07-25 05:01:35

TLS 1

Time of First Successful Submission: 2026-07-25 05:02:51

TLS 2

Time of First Successful Submission: 2026-07-25 05:05:55

level1

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level2

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level3

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level4

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level5

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level6

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level7

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level8

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level9

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level10

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level11

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level12

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level13

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level14

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level15

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level16

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level17

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level18

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level19

Time of First Successful Submission: 2026-07-25 05:39:22

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-07-25 05:42:43

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-07-25 05:43:50

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-07-25 05:45:22

Reading Endianness (Python)

Time of First Successful Submission: 2026-07-25 05:47:46

Reading Endianness (C)

Time of First Successful Submission: 2026-07-25 05:49:58

Reading Endianness (x86)

Time of First Successful Submission: 2026-07-25 05:52:05

Version Information (Python)

Time of First Successful Submission: 2026-07-25 05:54:14

Version Information (C)

Time of First Successful Submission: 2026-07-25 05:56:21

Version Information (x86)

Time of First Successful Submission: 2026-07-25 05:58:30

Metadata and Data (Python)

Time of First Successful Submission: 2026-07-25 06:01:23

Metadata and Data (C)

Time of First Successful Submission: 2026-07-25 06:03:54

Metadata and Data (x86)

Time of First Successful Submission: 2026-07-25 06:06:22

Input Restrictions (Python)

Time of First Successful Submission: 2026-07-25 06:08:34

Input Restrictions (C)

Time of First Successful Submission: 2026-07-25 06:10:43

Input Restrictions (x86)

Time of First Successful Submission: 2026-07-25 06:12:54

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-07-25 06:15:09

Behold the cIMG! (C)

Time of First Successful Submission: 2026-07-25 06:17:39

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-07-25 06:20:33

A Basic cIMG (Python)

Time of First Successful Submission: 2026-07-25 06:22:46

A Basic cIMG (C)

Time of First Successful Submission: 2026-07-25 06:25:17

A Basic cIMG (x86)

Time of First Successful Submission: 2026-07-25 06:27:37

Internal State Mini (C)

Time of First Successful Submission: 2026-07-25 06:30:19

Internal State Mini (x86)

Time of First Successful Submission: 2026-07-25 06:33:08

Internal State (C)

Time of First Successful Submission: 2026-07-25 06:36:03

Internal State (x86)

Time of First Successful Submission: 2026-07-25 06:38:48

File Formats: Directives (C)

Time of First Successful Submission: 2026-07-25 06:41:39

File Formats: Directives (x86)

Time of First Successful Submission: 2026-07-25 06:44:00

The Patch Directive

Time of First Successful Submission: 2026-07-25 06:51:44

Optimizing for Space

Time of First Successful Submission: 2026-07-25 06:56:50

Tweaking Images

Time of First Successful Submission: 2026-07-25 07:58:01

Storage and Retrieval

Time of First Successful Submission: 2026-07-25 08:10:26

Extracting Knowledge

Time of First Successful Submission: 2026-07-25 08:14:03


Start Here

12 / 12 3627 / 51983


Using the Terminal

Time of First Successful Submission: 2026-07-24 01:05:28

Using the VSCode Workspace

Time of First Successful Submission: 2026-07-24 01:13:14

Using the GUI Desktop

Time of First Successful Submission: 2026-07-24 01:28:52

Pasting into the Desktop

Time of First Successful Submission: 2026-07-24 01:34:38

Restarting Challenges

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

Challenge Programs

Time of First Successful Submission: 2026-07-23 22:36:15

The Flag File

Time of First Successful Submission: 2026-07-23 22:41:00

Using Privileged Mode

Time of First Successful Submission: 2026-07-23 22:56:41

Persistent Home Directories - One

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

Persistent Home Directories - Two

Time of First Successful Submission: 2026-07-23 23:12:59


Linux Luminarium

128 / 128 3993 / 38426


Intro to Commands

Time of First Successful Submission: 2026-07-24 01:43:44

Intro to Arguments

Time of First Successful Submission: 2026-07-24 01:44:41

Command History

Time of First Successful Submission: 2026-07-24 01:45:50

The Root

Time of First Successful Submission: 2026-07-24 01:47:52

Program and absolute paths

Time of First Successful Submission: 2026-07-24 01:48:10

Position thy self

Time of First Successful Submission: 2026-07-24 01:49:23

Position elsewhere

Time of First Successful Submission: 2026-07-24 01:51:26

implicit relative paths, from /

Time of First Successful Submission: 2026-07-24 01:52:08

explicit relative paths, from /

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implicit relative path

Time of First Successful Submission: 2026-07-24 01:52:43

home sweet home

Time of First Successful Submission: 2026-07-24 01:53:50

cat: not the pet, but the command!

Time of First Successful Submission: 2026-07-24 02:07:45

catting absolute paths

Time of First Successful Submission: 2026-07-24 02:08:01

more catting practice

Time of First Successful Submission: 2026-07-24 02:14:01

grepping for a needle in a haystack

Time of First Successful Submission: 2026-07-24 02:08:19

comparing files

Time of First Successful Submission: 2026-07-24 02:15:34

listing files

Time of First Successful Submission: 2026-07-24 02:10:46

touching files

Time of First Successful Submission: 2026-07-24 02:08:36

removing files

Time of First Successful Submission: 2026-07-24 02:08:56

moving files

Time of First Successful Submission: 2026-07-24 02:09:13

copying files

Time of First Successful Submission: 2026-07-24 02:09:29

hidden files

Time of First Successful Submission: 2026-07-24 02:11:04

An Epic Filesystem Quest

Time of First Successful Submission: 2026-07-24 02:35:20

making directories

Time of First Successful Submission: 2026-07-24 02:09:47

finding files

Time of First Successful Submission: 2026-07-24 02:12:31

linking files

Time of First Successful Submission: 2026-07-24 02:18:12

Learning From Documentation

Time of First Successful Submission: 2026-07-24 03:48:59

Learning Complex Usage

Time of First Successful Submission: 2026-07-24 03:50:16

Reading Manuals

Time of First Successful Submission: 2026-07-24 03:39:24

Searching Manuals

Time of First Successful Submission: 2026-07-24 03:40:41

Searching For Manuals

Time of First Successful Submission: 2026-07-24 03:42:33

Helpful Programs

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Help for Builtins

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Matching with *

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Matching with ?

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Matching with []

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Matching paths with []

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Multiple globs

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Mixing globs

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Exclusionary globbing

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Tab completion

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Multiple options for tab completion

Time of First Successful Submission: 2026-07-24 03:36:06

Tab completion on commands

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Redirecting output

Time of First Successful Submission: 2026-07-24 04:22:18

Redirecting more output

Time of First Successful Submission: 2026-07-24 04:17:33

Appending output

Time of First Successful Submission: 2026-07-24 04:24:09

Redirecting errors

Time of First Successful Submission: 2026-07-24 04:25:13

Redirecting input

Time of First Successful Submission: 2026-07-24 04:18:23

Grepping stored results

Time of First Successful Submission: 2026-07-24 04:18:41

Grepping live output

Time of First Successful Submission: 2026-07-24 04:19:06

Grepping errors

Time of First Successful Submission: 2026-07-24 04:26:20

Filtering with grep -v

Time of First Successful Submission: 2026-07-24 04:27:28

Filtering with sed

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Duplicating piped data with tee

Time of First Successful Submission: 2026-07-24 04:33:54

Process substitution for input

Time of First Successful Submission: 2026-07-24 04:38:37

Writing to multiple programs

Time of First Successful Submission: 2026-07-24 04:41:30

Split-piping stderr and stdout

Time of First Successful Submission: 2026-07-24 04:42:41

Named pipes

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Printing Variables

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Setting Variables

Time of First Successful Submission: 2026-07-24 05:31:39

Multi-word Variables

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Exporting Variables

Time of First Successful Submission: 2026-07-24 05:36:09

Printing Exported Variables

Time of First Successful Submission: 2026-07-24 05:33:43

Storing Command Output

Time of First Successful Submission: 2026-07-24 05:43:32

Reading Input

Time of First Successful Submission: 2026-07-24 05:45:04

Reading Files

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Translating characters

Time of First Successful Submission: 2026-07-24 05:49:40

Deleting characters

Time of First Successful Submission: 2026-07-24 05:50:59

Deleting newlines

Time of First Successful Submission: 2026-07-24 05:52:12

Extracting the first lines with head

Time of First Successful Submission: 2026-07-24 05:54:05

Extracting specific sections of text

Time of First Successful Submission: 2026-07-24 05:55:30

Sorting data

Time of First Successful Submission: 2026-07-24 05:58:06

Listing Processes

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Killing Processes

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Interrupting Processes

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Killing Misbehaving Processes

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Suspending Processes

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Resuming Processes

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Backgrounding Processes

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Foregrounding Processes

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Starting Backgrounded Processes

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Process Exit Codes

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Becoming root with su

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Other users with su

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Cracking passwords

Time of First Successful Submission: 2026-07-24 05:26:00

Using sudo

Time of First Successful Submission: 2026-07-24 05:27:06

Changing File Ownership

Time of First Successful Submission: 2026-07-24 03:52:23

Groups and Files

Time of First Successful Submission: 2026-07-24 03:52:40

Fun With Groups Names

Time of First Successful Submission: 2026-07-24 04:15:15

Changing Permissions

Time of First Successful Submission: 2026-07-24 04:12:54

Executable Files

Time of First Successful Submission: 2026-07-24 03:53:16

Permission Tweaking Practice

Time of First Successful Submission: 2026-07-24 03:57:54

Permissions Setting Practice

Time of First Successful Submission: 2026-07-24 04:13:48

The SUID Bit

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Chaining with Semicolons

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Building on Success

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Handling Failure

Time of First Successful Submission: 2026-07-24 02:54:39

Your First Shell Script

Time of First Successful Submission: 2026-07-24 02:56:49

Redirecting Script Output

Time of First Successful Submission: 2026-07-24 03:01:28

Executable Shell Scripts

Time of First Successful Submission: 2026-07-24 03:03:53

Understanding Shebangs

Time of First Successful Submission: 2026-07-24 03:06:22

Scripting with Arguments

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Scripting with Conditionals

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Scripting with Default Cases

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Scripting with Multiple Conditions

Time of First Successful Submission: 2026-07-24 03:10:40

Reading Shell Scripts

Time of First Successful Submission: 2026-07-24 03:11:53

Launching Screen

Time of First Successful Submission: 2026-07-24 07:13:22

Detaching and Attaching

Time of First Successful Submission: 2026-07-24 07:16:46

Finding Sessions

Time of First Successful Submission: 2026-07-24 07:18:15

Switching Windows

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

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-07-24 07:23:29

Switching Windows (tmux)

Time of First Successful Submission: 2026-07-24 07:25:42

The PATH Variable

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Setting PATH

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Finding Commands

Time of First Successful Submission: 2026-07-24 02:01:49

Adding Commands

Time of First Successful Submission: 2026-07-24 02:03:57

Hijacking Commands

Time of First Successful Submission: 2026-07-24 02:05:18

Bashrc Backdoor

Time of First Successful Submission: 2026-07-24 06:41:29

Sniffing Input

Time of First Successful Submission: 2026-07-24 06:51:00

Overshared Directories

Time of First Successful Submission: 2026-07-24 06:54:06

Tricky Linking

Time of First Successful Submission: 2026-07-24 07:00:59

Sniffing Process Arguments

Time of First Successful Submission: 2026-07-24 07:03:59

Snooping on Configurations

Time of First Successful Submission: 2026-07-24 07:06:28

The Fork Bomb

Time of First Successful Submission: 2026-07-24 06:07:29

Disk-Space Doomsday

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rm -rf /

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Life after rm -rf /

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Finding meaning after rm -rf /

Time of First Successful Submission: 2026-07-24 06:34:57


Computing 101

128 / 132 135 / 21420


Your First Register

Time of First Successful Submission: 2026-07-24 10:54:09

Your First Syscall

Time of First Successful Submission: 2026-07-24 10:55:53

Exit Codes

Time of First Successful Submission: 2026-07-24 10:58:41

Building Executables

Time of First Successful Submission: 2026-07-24 11:01:27

Moving Between Registers

Time of First Successful Submission: 2026-07-24 11:07:54

Loading From Memory

Time of First Successful Submission: 2026-07-24 13:39:06

More Loading Practice

Time of First Successful Submission: 2026-07-24 13:40:28

Dereferencing Pointers

Time of First Successful Submission: 2026-07-24 13:41:55

Dereferencing Yourself

Time of First Successful Submission: 2026-07-24 13:43:34

Dereferencing with Offsets

Time of First Successful Submission: 2026-07-24 13:45:08

Stored Addresses

Time of First Successful Submission: 2026-07-24 13:46:43

Double Dereference

Time of First Successful Submission: 2026-07-24 13:48:15

The Stack

Time of First Successful Submission: 2026-07-24 13:50:43

Stack Offsets

Time of First Successful Submission: 2026-07-24 13:52:23

Program Arguments on the Stack

Time of First Successful Submission: 2026-07-24 14:01:59

Popping From the Stack

Time of First Successful Submission: 2026-07-24 14:03:39

Negative Numbers

Time of First Successful Submission: 2026-07-24 12:27:22

Negative Numbers (16-bit)

Time of First Successful Submission: 2026-07-24 12:29:36

Negative Numbers (32-bit)

Time of First Successful Submission: 2026-07-24 12:32:11

Encoding Negatives

Time of First Successful Submission: 2026-07-24 12:34:51

Binary and Hex Encoding

Time of First Successful Submission: 2026-07-24 12:41:06

More Hex

Time of First Successful Submission: 2026-07-24 12:43:23

Decoding Hex

Time of First Successful Submission: 2026-07-24 12:44:50

Mixed Conversions

Time of First Successful Submission: 2026-07-24 12:54:52

Disassembling Programs

Time of First Successful Submission: 2026-07-24 12:57:54

Tracing Syscalls

Time of First Successful Submission: 2026-07-24 13:00:17

Starting GDB

Time of First Successful Submission: 2026-07-24 13:04:40

Quitting GDB

Time of First Successful Submission: 2026-07-24 13:05:51

Starting Programs in GDB

Time of First Successful Submission: 2026-07-24 13:07:53

Disassembling in GDB

Time of First Successful Submission: 2026-07-24 13:10:28

Stepping Through Instructions

Time of First Successful Submission: 2026-07-24 13:12:16

Reading Register Values

Time of First Successful Submission: 2026-07-24 13:16:19

Setting Register Values

Time of First Successful Submission: 2026-07-24 13:21:45

Popping Stack Values

Time of First Successful Submission: 2026-07-24 13:23:03

Examining Memory

Time of First Successful Submission: 2026-07-24 13:27:56

Examining Stack Pointers

Time of First Successful Submission: 2026-07-24 13:30:10

Cooperative Debugging

Time of First Successful Submission: 2026-07-24 13:32:09

Running with Arguments

Time of First Successful Submission: 2026-07-24 13:33:52

Redirecting Input in GDB

Time of First Successful Submission: 2026-07-24 13:36:44

Writing Output

Time of First Successful Submission: 2026-07-24 10:33:14

Chaining Syscalls

Time of First Successful Submission: 2026-07-24 10:35:08

Writing Strings

Time of First Successful Submission: 2026-07-24 10:40:05

Reading Data

Time of First Successful Submission: 2026-07-24 10:41:54

Reading Exactly

Time of First Successful Submission: 2026-07-24 10:44:25

Opening Files

Time of First Successful Submission: 2026-07-24 10:46:15

Hardcoding the Filename

Time of First Successful Submission: 2026-07-24 10:49:04

RIP-Relative Strings

Time of First Successful Submission: 2026-07-24 10:51:20

Comparing Values

Time of First Successful Submission: 2026-07-24 15:19:11

Comparing Characters

Time of First Successful Submission: 2026-07-24 15:23:27

Conditional Control Flow

Time of First Successful Submission: 2026-07-24 15:17:40

Comparing Strings

Time of First Successful Submission: 2026-07-24 15:24:41

Reverse the Password

Time of First Successful Submission: 2026-07-24 15:22:01

Conditionals Without Conditionals

Time of First Successful Submission: 2026-07-24 15:26:46

Recognizing Loops

Time of First Successful Submission: 2026-07-24 15:28:03

Writing Loops

Time of First Successful Submission: 2026-07-24 15:29:35

Writing From a Shared Library

Time of First Successful Submission: 2026-07-24 15:31:20

Returning a Value

Time of First Successful Submission: 2026-07-24 15:32:35

Calling Through a Pointer

Time of First Successful Submission: 2026-07-24 15:33:53

Calling Through a Pointer with an Argument

Time of First Successful Submission: 2026-07-24 15:35:02

Saving Caller-Saved Registers

Time of First Successful Submission: 2026-07-24 15:38:23

Saving Callee-Saved Registers

Time of First Successful Submission: 2026-07-24 15:39:46

Sign Extension

Time of First Successful Submission: 2026-07-24 14:50:47

Little-Endian Bytes

Time of First Successful Submission: 2026-07-24 14:53:03

Qword by Qword

Time of First Successful Submission: 2026-07-24 14:57:18

Dword by Dword

Time of First Successful Submission: 2026-07-24 14:59:46

Word by Word

Time of First Successful Submission: 2026-07-24 15:01:20

Byte by Byte

Time of First Successful Submission: 2026-07-24 15:02:49

Cracking a Struct

Time of First Successful Submission: 2026-07-24 15:05:25

Scrambled Struct

Time of First Successful Submission: 2026-07-24 15:07:39

Reverse the Calculation

Time of First Successful Submission: 2026-07-24 15:42:36

Reverse the Reverse

Time of First Successful Submission: 2026-07-24 15:43:29

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-07-24 15:44:26

Even or Odd

Time of First Successful Submission: 2026-07-24 15:45:53

Masking Bits

Time of First Successful Submission: 2026-07-24 15:46:33

Lowercase a String

Time of First Successful Submission: 2026-07-24 15:48:12

Uppercase a String

Time of First Successful Submission: 2026-07-24 15:49:03

Swap Case

Time of First Successful Submission: 2026-07-24 15:50:18

Shifting Left

Time of First Successful Submission: 2026-07-24 15:51:42

Shifting Right

Time of First Successful Submission: 2026-07-24 15:52:26

Loops on Data

Time of First Successful Submission: 2026-07-24 15:53:40

Reaching Into the Caller's Frame

Time of First Successful Submission: 2026-07-24 14:11:39

Loading Stale Stack Data

Time of First Successful Submission: 2026-07-24 14:14:45

Stealing Stale Stack Data

Time of First Successful Submission: 2026-07-24 14:19:16

Reserving Your Own Frame

Time of First Successful Submission: 2026-07-24 14:21:01

Using Your Own Frame

Time of First Successful Submission: 2026-07-24 14:27:45

Environment Variables on the Stack

Time of First Successful Submission: 2026-07-24 14:31:50

Aligning the Stack Through the Environment

Time of First Successful Submission: 2026-07-24 14:39:30

Aligning the Stack Through GDB

Time of First Successful Submission: 2026-07-24 14:42:17

Aligning the Stack Through GDB, Generalized

Time of First Successful Submission: 2026-07-24 14:44:20

A Single Digit

Time of First Successful Submission: 2026-07-24 11:10:44

Two Digits

Time of First Successful Submission: 2026-07-24 11:20:05

String to Integer

Time of First Successful Submission: 2026-07-24 11:22:33

Negative Numbers

Time of First Successful Submission: 2026-07-24 11:23:45

Where the Number Ends

Time of First Successful Submission: 2026-07-24 11:26:15

A Whole Program

Time of First Successful Submission: 2026-07-24 11:28:02

A Single Digit, Back to Text

Time of First Successful Submission: 2026-07-24 11:29:34

Divide and Remainder

Time of First Successful Submission: 2026-07-24 11:32:31

Drop the Leading Zero

Time of First Successful Submission: 2026-07-24 11:37:53

Integer to String

Time of First Successful Submission: 2026-07-24 11:41:21

Negative Numbers, Back to Text

Time of First Successful Submission: 2026-07-24 11:42:46

Sum Them All

Time of First Successful Submission: 2026-07-24 11:47:01

Addition

Time of First Successful Submission: 2026-07-24 11:49:31

Subtraction

Time of First Successful Submission: 2026-07-24 11:51:04

Multiplication

Time of First Successful Submission: 2026-07-24 11:52:35

Bitwise Operators

Time of First Successful Submission: 2026-07-24 11:56:08

Unary Operators

Time of First Successful Submission: 2026-07-24 12:00:33

Literal Output

Time of First Successful Submission: 2026-07-24 12:03:33

Newline Escapes

Time of First Successful Submission: 2026-07-24 12:06:08

Escaped Syntax

Time of First Successful Submission: 2026-07-24 12:08:06

Decimal Markers

Time of First Successful Submission: 2026-07-24 12:15:04

Multiple Decimal Markers

Time of First Successful Submission: 2026-07-24 12:17:44

String Markers

Time of First Successful Submission: 2026-07-24 12:19:05

Hex Byte Escapes

Time of First Successful Submission: 2026-07-24 12:20:25

Debugging Programs

Time of First Successful Submission: 2026-07-24 15:56:44

Inspecting Registers

Time of First Successful Submission: 2026-07-24 16:03:47

Examining Memory

Time of First Successful Submission: 2026-07-24 16:17:12

Setting Breakpoints

Time of First Successful Submission: 2026-07-24 16:27:21

GDB Scripting

Time of First Successful Submission: 2026-07-24 16:35:40

Modifying Data

Time of First Successful Submission: 2026-07-24 16:41:56

Modifying Execution

Time of First Successful Submission: 2026-07-24 16:45:28

Broken Functions

Time of First Successful Submission: 2026-07-24 16:47:36

Exit

Time of First Successful Submission: 2026-07-24 16:54:51

Socket

Time of First Successful Submission: 2026-07-24 16:55:52

Bind

Time of First Successful Submission: 2026-07-24 16:56:52

Listen

Time of First Successful Submission: 2026-07-24 16:57:47

Accept

Time of First Successful Submission: 2026-07-24 17:21:11

Static Response

Time of First Successful Submission: 2026-07-24 17:23:01

Dynamic Response

Time of First Successful Submission: 2026-07-24 17:24:28

Iterative GET Server

Time of First Successful Submission: 2026-07-24 17:25:36

Concurrent GET Server

Time of First Successful Submission: 2026-07-24 17:27:12

Concurrent POST Server

Time of First Successful Submission: 2026-07-24 17:29:03

Web Server

Time of First Successful Submission: 2026-07-24 17:30:40


Playing With Programs

115 / 116 1129 / 24572


What's the password?

Time of First Successful Submission: 2026-07-24 17:39:20

... and again!

Time of First Successful Submission: 2026-07-24 17:40:11

Newline Troubles

Time of First Successful Submission: 2026-07-24 17:41:10

Reasoning about files

Time of First Successful Submission: 2026-07-24 17:42:14

Specifying Filenames

Time of First Successful Submission: 2026-07-24 17:43:19

Binary and Hex Encoding

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

More Hex

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

Decoding Hex

Time of First Successful Submission: 2026-07-24 17:48:07

Decoding Practice

Time of First Successful Submission: 2026-07-24 17:49:12

Encoding Practice

Time of First Successful Submission: 2026-07-24 17:45:07

Hex-encoding ASCII

Time of First Successful Submission: 2026-07-24 17:50:07

Nested Encoding

Time of First Successful Submission: 2026-07-24 17:51:02

Hex-encoding UTF-8

Time of First Successful Submission: 2026-07-24 17:51:56

UTF Mixups

Time of First Successful Submission: 2026-07-24 17:52:58

Modifying Encoded Data

Time of First Successful Submission: 2026-07-24 17:53:54

Decoding Base64

Time of First Successful Submission: 2026-07-24 17:54:46

Encoding Base64

Time of First Successful Submission: 2026-07-24 17:55:38

Dealing with Obfuscation

Time of First Successful Submission: 2026-07-24 17:56:30

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-07-24 17:58:06

Your First HTTP Request

Time of First Successful Submission: 2026-07-24 17:59:41

Reading Flask

Time of First Successful Submission: 2026-07-24 18:00:36

Commented Data

Time of First Successful Submission: 2026-07-24 18:01:31

HTTP Metadata

Time of First Successful Submission: 2026-07-24 18:02:25

HTTP (netcat)

Time of First Successful Submission: 2026-07-24 18:03:32

HTTP Paths (netcat)

Time of First Successful Submission: 2026-07-24 18:04:27

HTTP (curl)

Time of First Successful Submission: 2026-07-24 18:05:22

HTTP (python)

Time of First Successful Submission: 2026-07-24 18:06:13

HTTP Host Header (python)

Time of First Successful Submission: 2026-07-24 18:07:25

HTTP Host Header (curl)

Time of First Successful Submission: 2026-07-24 18:08:20

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-07-24 18:09:17

URL Encoding (netcat)

Time of First Successful Submission: 2026-07-24 18:19:28

HTTP GET Parameters

Time of First Successful Submission: 2026-07-24 18:20:30

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-07-24 18:21:41

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-07-24 18:22:51

HTTP Forms

Time of First Successful Submission: 2026-07-24 18:23:55

HTTP Forms (curl)

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

HTTP Forms (netcat)

Time of First Successful Submission: 2026-07-24 18:25:50

HTTP Forms (python)

Time of First Successful Submission: 2026-07-24 18:26:43

HTTP Forms Without Forms

Time of First Successful Submission: 2026-07-24 18:27:40

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-07-24 18:28:36

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-07-24 18:29:46

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-07-24 18:31:02

HTTP Redirects (curl)

Time of First Successful Submission: 2026-07-24 18:32:06

HTTP Redirects (python)

Time of First Successful Submission: 2026-07-24 18:33:08

HTTP Cookies (curl)

Time of First Successful Submission: 2026-07-24 18:35:41

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-07-24 18:36:38

HTTP Cookies (python)

Time of First Successful Submission: 2026-07-24 18:37:14

Server State (python)

Time of First Successful Submission: 2026-07-24 18:38:07

Listening Web

Time of First Successful Submission: 2026-07-24 18:39:48

Speaking Redirects

Time of First Successful Submission: 2026-07-24 18:44:01

JavaScript Redirects

Time of First Successful Submission: 2026-07-24 18:45:33

Including JavaScript

Time of First Successful Submission: 2026-07-24 18:48:05

HTTP (javascript)

Time of First Successful Submission: 2026-07-24 18:49:40

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-07-24 18:50:49

HTTP Forms (javascript)

Time of First Successful Submission: 2026-07-24 18:51:59

cat

Time of First Successful Submission: 2026-07-24 18:54:08

more

Time of First Successful Submission: 2026-07-24 18:54:45

less

Time of First Successful Submission: 2026-07-24 18:55:21

tail

Time of First Successful Submission: 2026-07-24 18:55:54

head

Time of First Successful Submission: 2026-07-24 18:56:29

sort

Time of First Successful Submission: 2026-07-24 18:57:10

vim

Time of First Successful Submission: 2026-07-24 18:57:44

emacs

Time of First Successful Submission: 2026-07-24 18:58:41

nano

Time of First Successful Submission: 2026-07-24 19:01:09

rev

Time of First Successful Submission: 2026-07-24 19:02:10

od

Time of First Successful Submission: 2026-07-24 19:02:46

hd

Time of First Successful Submission: 2026-07-24 19:03:21

xxd

Time of First Successful Submission: 2026-07-24 19:03:55

base32

Time of First Successful Submission: 2026-07-24 19:04:29

base64

Time of First Successful Submission: 2026-07-24 19:05:05

split

Time of First Successful Submission: 2026-07-24 19:05:43

gzip

Time of First Successful Submission: 2026-07-24 19:06:15

bzip2

Time of First Successful Submission: 2026-07-24 19:06:52

zip

Time of First Successful Submission: 2026-07-24 19:07:31

tar

Time of First Successful Submission: 2026-07-24 19:08:12

ar

Time of First Successful Submission: 2026-07-24 19:08:52

cpio

Time of First Successful Submission: 2026-07-24 19:10:10

genisoimage

Time of First Successful Submission: 2026-07-24 19:14:55

env

Time of First Successful Submission: 2026-07-24 19:15:33

find

Time of First Successful Submission: 2026-07-24 19:16:09

make

Time of First Successful Submission: 2026-07-24 19:16:45

nice

Time of First Successful Submission: 2026-07-24 19:17:27

timeout

Time of First Successful Submission: 2026-07-24 19:18:03

stdbuf

Time of First Successful Submission: 2026-07-24 19:18:58

setarch

Time of First Successful Submission: 2026-07-24 19:19:34

watch

Time of First Successful Submission: 2026-07-24 19:23:07

socat

Time of First Successful Submission: 2026-07-24 19:23:52

whiptail

Time of First Successful Submission: 2026-07-24 19:28:14

awk

Time of First Successful Submission: 2026-07-24 19:28:45

sed

Time of First Successful Submission: 2026-07-24 19:29:23

ed

Time of First Successful Submission: 2026-07-24 19:30:02

chown

Time of First Successful Submission: 2026-07-24 19:30:52

chmod

Time of First Successful Submission: 2026-07-24 19:31:27

cp

Time of First Successful Submission: 2026-07-24 19:32:08

mv

Time of First Successful Submission: 2026-07-24 19:34:23

perl

Time of First Successful Submission: 2026-07-24 19:34:57

python

Time of First Successful Submission: 2026-07-24 19:35:31

ruby

Time of First Successful Submission: 2026-07-24 19:36:46

bash

Time of First Successful Submission: 2026-07-24 19:37:24

date

Time of First Successful Submission: 2026-07-24 19:38:01

dmesg

Time of First Successful Submission: 2026-07-24 19:38:39

wc

Time of First Successful Submission: 2026-07-24 19:39:16

gcc

Time of First Successful Submission: 2026-07-24 19:39:50

as

Time of First Successful Submission: 2026-07-24 19:40:28

wget

Time of First Successful Submission: 2026-07-24 19:42:17

ssh-keygen

Time of First Successful Submission: 2026-07-24 19:44:24

SQL Queries

Time of First Successful Submission: 2026-07-24 19:46:06

Filtering SQL

Time of First Successful Submission: 2026-07-24 19:47:05

Choosing Columns

Time of First Successful Submission: 2026-07-24 19:48:02

Exclusionary Filtering

Time of First Successful Submission: 2026-07-24 19:48:57

Filtering Strings

Time of First Successful Submission: 2026-07-24 19:50:18

Filtering on Expressions

Time of First Successful Submission: 2026-07-24 19:51:13

SELECTing Expressions

Time of First Successful Submission: 2026-07-24 19:53:13

Composite Conditions

Time of First Successful Submission: 2026-07-24 19:54:08

Reaching Your LIMITs

Time of First Successful Submission: 2026-07-24 19:55:35

Querying Metadata

Time of First Successful Submission: 2026-07-24 19:59:58


DSU Cyber Camps

12 / 104 3937 / 52291


Using the Terminal

Time of First Successful Submission: 2026-07-24 01:05:28

Using the VSCode Workspace

Time of First Successful Submission: 2026-07-24 01:13:14

Using the GUI Desktop

Time of First Successful Submission: 2026-07-24 01:28:52

Pasting into the Desktop

Time of First Successful Submission: 2026-07-24 01:34:38

Connecting over SSH

Time of First Successful Submission: 2026-07-24 00:59:30

Restarting Challenges

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

Getting Help

Time of First Successful Submission: 2026-07-24 01:40:11

Challenge Programs

Time of First Successful Submission: 2026-07-23 22:36:15

The Flag File

Time of First Successful Submission: 2026-07-23 22:41:00

Using Privileged Mode

Time of First Successful Submission: 2026-07-23 22:56:41

Persistent Home Directories - One

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

Persistent Home Directories - Two

Time of First Successful Submission: 2026-07-23 23:12:59


GCA CTF

12 / 104 3937 / 52291


Using the Terminal

Time of First Successful Submission: 2026-07-24 01:05:28

Using the VSCode Workspace

Time of First Successful Submission: 2026-07-24 01:13:14

Using the GUI Desktop

Time of First Successful Submission: 2026-07-24 01:28:52

Pasting into the Desktop

Time of First Successful Submission: 2026-07-24 01:34:38

Connecting over SSH

Time of First Successful Submission: 2026-07-24 00:59:30

Restarting Challenges

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

Getting Help

Time of First Successful Submission: 2026-07-24 01:40:11

Challenge Programs

Time of First Successful Submission: 2026-07-23 22:36:15

The Flag File

Time of First Successful Submission: 2026-07-23 22:41:00

Using Privileged Mode

Time of First Successful Submission: 2026-07-23 22:56:41

Persistent Home Directories - One

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

Persistent Home Directories - Two

Time of First Successful Submission: 2026-07-23 23:12:59