agali9

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-14 02:50:04

Command Arguments

Time of First Successful Submission: 2026-01-14 02:51:46

Command History

Time of First Successful Submission: 2026-01-14 02:52:30

The Root Path

Time of First Successful Submission: 2026-01-14 03:03:47

Absolute Paths

Time of First Successful Submission: 2026-01-14 03:04:44

Changing position

Time of First Successful Submission: 2026-01-14 03:07:41

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-14 03:10:01

Relative Paths

Time of First Successful Submission: 2026-01-14 22:34:01

Cat

Time of First Successful Submission: 2026-01-14 17:36:30

Ls

Time of First Successful Submission: 2026-01-14 17:43:43

Ls All

Time of First Successful Submission: 2026-01-14 17:49:12

Find

Time of First Successful Submission: 2026-01-14 18:03:03

Piping Echo

Time of First Successful Submission: 2026-01-14 21:12:47

Piping Stdout

Time of First Successful Submission: 2026-01-14 21:13:59

Piping Stdin

Time of First Successful Submission: 2026-01-14 21:25:42


Intro to Cybersecurity

141 / 183 916 / 20702


Path Traversal 1

Time of First Successful Submission: 2026-02-10 05:03:02

Path Traversal 2

Time of First Successful Submission: 2026-02-10 05:24:50

CMDi 1

Time of First Successful Submission: 2026-02-10 05:27:27

CMDi 2

Time of First Successful Submission: 2026-02-10 05:31:18

CMDi 3

Time of First Successful Submission: 2026-02-10 05:33:41

CMDi 4

Time of First Successful Submission: 2026-02-10 05:35:33

CMDi 5

Time of First Successful Submission: 2026-02-10 05:42:18

Authentication Bypass 1

Time of First Successful Submission: 2026-02-10 05:45:09

Authentication Bypass 2

Time of First Successful Submission: 2026-02-10 05:47:09

SQLi 1

Time of First Successful Submission: 2026-02-10 05:52:27

SQLi 2

Time of First Successful Submission: 2026-02-10 05:57:20

SQLi 3

Time of First Successful Submission: 2026-02-14 23:56:25

SQLi 4

Time of First Successful Submission: 2026-02-14 23:59:34

SQLi 5

Time of First Successful Submission: 2026-02-17 06:53:02

XSS 1

Time of First Successful Submission: 2026-02-10 06:15:22

XSS 2

Time of First Successful Submission: 2026-02-10 06:18:21

XSS 3

Time of First Successful Submission: 2026-02-15 00:21:41

XSS 4

Time of First Successful Submission: 2026-02-15 00:25:36

XSS 5

Time of First Successful Submission: 2026-02-15 00:37:48

XSS 6

Time of First Successful Submission: 2026-02-15 00:43:17

XSS 7

Time of First Successful Submission: 2026-02-15 00:53:32

CSRF 1

Time of First Successful Submission: 2026-02-17 06:56:00

CSRF 2

Time of First Successful Submission: 2026-02-17 06:20:05

CSRF 3

Time of First Successful Submission: 2026-02-17 06:22:54

CSRF 4

Time of First Successful Submission: 2026-02-17 06:34:04

CSRF 5

Time of First Successful Submission: 2026-02-17 06:39:00

Connect

Time of First Successful Submission: 2026-04-12 01:37:31

Send

Time of First Successful Submission: 2026-04-12 01:38:26

Shutdown

Time of First Successful Submission: 2026-04-12 01:40:04

Listen

Time of First Successful Submission: 2026-04-12 01:41:04

Scan 1

Time of First Successful Submission: 2026-04-12 01:46:04

Scan 2

Time of First Successful Submission: 2026-04-12 01:48:10

Monitor 1

Time of First Successful Submission: 2026-04-12 01:51:34

Monitor 2

Time of First Successful Submission: 2026-04-22 04:42:04

Sniffing Cookies

Time of First Successful Submission: 2026-04-12 02:07:42

Network Configuration

Time of First Successful Submission: 2026-04-12 02:10:01

Firewall 1

Time of First Successful Submission: 2026-04-12 02:11:18

Firewall 2

Time of First Successful Submission: 2026-04-12 02:12:30

Firewall 3

Time of First Successful Submission: 2026-04-12 02:14:25

Denial of Service 1

Time of First Successful Submission: 2026-04-22 04:48:17

Denial of Service 2

Time of First Successful Submission: 2026-04-22 04:53:17

Ethernet

Time of First Successful Submission: 2026-04-22 05:20:04

IP

Time of First Successful Submission: 2026-04-12 02:50:39

TCP

Time of First Successful Submission: 2026-04-12 02:52:25

TCP Handshake

Time of First Successful Submission: 2026-04-22 03:21:08

UDP

Time of First Successful Submission: 2026-04-22 03:25:20

UDP 2

Time of First Successful Submission: 2026-04-22 03:32:40

UDP Spoofing 1

Time of First Successful Submission: 2026-04-22 03:35:58

UDP Spoofing 2

Time of First Successful Submission: 2026-04-22 03:39:29

UDP Spoofing 3

Time of First Successful Submission: 2026-04-22 03:42:28

UDP Spoofing 4

Time of First Successful Submission: 2026-04-22 03:54:51

ARP

Time of First Successful Submission: 2026-04-22 03:57:24

Intercept

Time of First Successful Submission: 2026-04-22 04:01:07

Man-in-the-Middle

Time of First Successful Submission: 2026-05-12 00:20:17

XOR

Time of First Successful Submission: 2026-05-01 06:05:32

XORing Hex

Time of First Successful Submission: 2026-05-01 06:11:49

XORing ASCII

Time of First Successful Submission: 2026-05-01 06:17:30

XORing ASCII Strings

Time of First Successful Submission: 2026-05-10 00:29:20

One-time Pad

Time of First Successful Submission: 2026-05-01 06:27:16

One-time Pad Tampering

Time of First Successful Submission: 2026-05-10 00:33:35

Many-time Pad

Time of First Successful Submission: 2026-05-10 00:45:58

AES

Time of First Successful Submission: 2026-05-10 00:47:04

AES-ECB-CPA

Time of First Successful Submission: 2026-05-10 06:06:22

AES-ECB-CPA-HTTP

Time of First Successful Submission: 2026-05-10 06:40:21

AES-ECB-CPA-HTTP (base64)

Time of First Successful Submission: 2026-05-10 06:42:05

AES-ECB-CPA-Suffix

Time of First Successful Submission: 2026-05-10 06:47:54

AES-ECB-CPA-Prefix

Time of First Successful Submission: 2026-05-10 07:25:26

AES-ECB-CPA-Prefix-2

Time of First Successful Submission: 2026-05-10 07:27:19

AES-ECB-CPA-Prefix-Miniboss

Time of First Successful Submission: 2026-05-10 07:34:52

AES-ECB-CPA-Prefix-Boss

Time of First Successful Submission: 2026-05-10 07:51:33

AES-CBC

Time of First Successful Submission: 2026-05-10 07:57:11

AES-CBC Tampering

Time of First Successful Submission: 2026-05-10 08:13:11

AES-CBC Resizing

Time of First Successful Submission: 2026-05-10 08:22:45

AES-CBC-POA-Partial-Block

Time of First Successful Submission: 2026-05-10 08:49:47

AES-CBC-POA-Full-Block

Time of First Successful Submission: 2026-05-10 08:57:34

AES-CBC-POA-Multi-Block

Time of First Successful Submission: 2026-05-11 16:08:26

AES-CBC-POA-Encrypt

Time of First Successful Submission: 2026-05-11 21:08:41

AES-CBC-POA-Encrypt-2

Time of First Successful Submission: 2026-05-11 21:09:51

DHKE

Time of First Successful Submission: 2026-05-11 17:16:55

DHKE-to-AES

Time of First Successful Submission: 2026-05-11 17:20:41

RSA 1

Time of First Successful Submission: 2026-05-11 17:23:22

RSA 2

Time of First Successful Submission: 2026-05-11 17:30:06

RSA 3

Time of First Successful Submission: 2026-05-11 17:36:25

RSA 4

Time of First Successful Submission: 2026-05-11 17:53:14

RSA Signatures

Time of First Successful Submission: 2026-05-11 17:57:32

SHA 1

Time of First Successful Submission: 2026-05-11 18:00:44

SHA 2

Time of First Successful Submission: 2026-05-11 18:05:29

TLS 1

Time of First Successful Submission: 2026-05-11 18:16:46

TLS 2

Time of First Successful Submission: 2026-05-11 21:12:51

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-10 21:50:41

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-10 22:05:29

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-10 22:08:44

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-10 22:10:33

Reading Endianness (C)

Time of First Successful Submission: 2026-03-10 22:20:18

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-10 22:23:01

Version Information (Python)

Time of First Successful Submission: 2026-03-10 22:30:35

Version Information (C)

Time of First Successful Submission: 2026-03-10 22:36:05

Version Information (x86)

Time of First Successful Submission: 2026-03-10 22:37:44

Metadata and Data (Python)

Time of First Successful Submission: 2026-03-10 22:40:47

Metadata and Data (C)

Time of First Successful Submission: 2026-03-10 22:42:30

Metadata and Data (x86)

Time of First Successful Submission: 2026-03-10 22:43:49

Input Restrictions (Python)

Time of First Successful Submission: 2026-03-10 22:46:52

Input Restrictions (C)

Time of First Successful Submission: 2026-03-10 22:48:57

Input Restrictions (x86)

Time of First Successful Submission: 2026-03-10 22:50:18

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-03-10 22:52:32

Behold the cIMG! (C)

Time of First Successful Submission: 2026-05-11 22:50:10

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-03-10 23:04:08

A Basic cIMG (Python)

Time of First Successful Submission: 2026-05-11 22:48:29

A Basic cIMG (C)

Time of First Successful Submission: 2026-03-10 23:14:21

A Basic cIMG (x86)

Time of First Successful Submission: 2026-03-10 23:15:44

Internal State Mini (C)

Time of First Successful Submission: 2026-03-23 01:52:37

Internal State Mini (x86)

Time of First Successful Submission: 2026-03-23 02:41:05

Internal State (C)

Time of First Successful Submission: 2026-05-11 22:56:29

Internal State (x86)

Time of First Successful Submission: 2026-05-11 23:03:55

File Formats: Directives (C)

Time of First Successful Submission: 2026-05-11 21:26:59

File Formats: Directives (x86)

Time of First Successful Submission: 2026-05-11 21:28:45

The Patch Directive

Time of First Successful Submission: 2026-05-11 21:47:16

Tweaking Images

Time of First Successful Submission: 2026-05-11 21:44:46

Animations

Time of First Successful Submission: 2026-05-11 23:52:21

Interoperability: Patching Data

Time of First Successful Submission: 2026-05-11 19:16:13

Your First Overflow (easy)

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

Your First Overflow (hard)

Time of First Successful Submission: 2026-03-29 17:22:00

Precision (easy)

Time of First Successful Submission: 2026-03-29 17:26:55

Precision (hard)

Time of First Successful Submission: 2026-03-29 17:39:09

Variable Control (easy)

Time of First Successful Submission: 2026-03-29 17:43:16

Variable Control (hard)

Time of First Successful Submission: 2026-03-29 17:46:10

Control Hijack (easy)

Time of First Successful Submission: 2026-03-29 17:50:06

Control Hijack (hard)

Time of First Successful Submission: 2026-03-29 17:52:34

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-03-29 17:58:35

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-03-29 18:02:25

PIEs (easy)

Time of First Successful Submission: 2026-04-06 04:58:12

PIEs (hard)

Time of First Successful Submission: 2026-04-09 04:43:40

String Lengths (easy)

Time of First Successful Submission: 2026-04-09 04:56:12

String Lengths (hard)

Time of First Successful Submission: 2026-04-09 05:06:31

Basic Shellcode

Time of First Successful Submission: 2026-04-09 05:15:34

NOP Sleds

Time of First Successful Submission: 2026-04-09 22:36:29

NULL-Free Shellcode

Time of First Successful Submission: 2026-04-10 02:35:09

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2026-04-10 02:48:12

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2026-04-10 02:53:01

Hijack to Shellcode (easy)

Time of First Successful Submission: 2026-04-10 03:00:56

Hijack to Shellcode (hard)

Time of First Successful Submission: 2026-04-10 03:25:53


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-14 01:59:42

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-14 02:01:12

Using the GUI Desktop

Time of First Successful Submission: 2026-01-14 02:02:57

Pasting into the Desktop

Time of First Successful Submission: 2026-01-14 02:04:34

Restarting Challenges

Time of First Successful Submission: 2026-01-14 02:08:57


Linux Luminarium

128 / 128 1489 / 33958


Intro to Commands

Time of First Successful Submission: 2026-01-14 02:50:04

Intro to Arguments

Time of First Successful Submission: 2026-01-14 02:51:46

Command History

Time of First Successful Submission: 2026-01-14 02:52:30

The Root

Time of First Successful Submission: 2026-01-14 03:03:47

Program and absolute paths

Time of First Successful Submission: 2026-01-14 03:04:44

Position thy self

Time of First Successful Submission: 2026-01-14 03:07:41

Position elsewhere

Time of First Successful Submission: 2026-01-14 03:10:01

implicit relative paths, from /

Time of First Successful Submission: 2026-01-14 22:34:01

explicit relative paths, from /

Time of First Successful Submission: 2026-01-14 22:36:27

implicit relative path

Time of First Successful Submission: 2026-01-14 22:37:35

home sweet home

Time of First Successful Submission: 2026-01-14 22:42:53

cat: not the pet, but the command!

Time of First Successful Submission: 2026-01-14 17:36:30

catting absolute paths

Time of First Successful Submission: 2026-01-14 17:37:17

more catting practice

Time of First Successful Submission: 2026-01-14 17:38:16

grepping for a needle in a haystack

Time of First Successful Submission: 2026-01-14 17:40:25

comparing files

Time of First Successful Submission: 2026-01-14 22:45:33

listing files

Time of First Successful Submission: 2026-01-14 17:43:43

touching files

Time of First Successful Submission: 2026-01-14 17:44:44

removing files

Time of First Successful Submission: 2026-01-14 17:45:26

moving files

Time of First Successful Submission: 2026-01-14 17:46:39

copying files

Time of First Successful Submission: 2026-01-14 17:47:27

hidden files

Time of First Successful Submission: 2026-01-14 17:49:12

An Epic Filesystem Quest

Time of First Successful Submission: 2026-01-14 17:59:30

making directories

Time of First Successful Submission: 2026-01-14 18:00:29

finding files

Time of First Successful Submission: 2026-01-14 18:03:03

linking files

Time of First Successful Submission: 2026-01-14 22:48:26

Learning From Documentation

Time of First Successful Submission: 2026-01-14 18:22:45

Learning Complex Usage

Time of First Successful Submission: 2026-01-14 18:28:03

Reading Manuals

Time of First Successful Submission: 2026-01-14 18:30:05

Searching Manuals

Time of First Successful Submission: 2026-01-14 18:32:02

Searching For Manuals

Time of First Successful Submission: 2026-01-14 22:53:02

Helpful Programs

Time of First Successful Submission: 2026-01-14 18:42:06

Help for Builtins

Time of First Successful Submission: 2026-01-14 18:44:08

Matching with *

Time of First Successful Submission: 2026-01-14 20:49:01

Matching with ?

Time of First Successful Submission: 2026-01-14 20:50:10

Matching with []

Time of First Successful Submission: 2026-01-14 20:54:34

Matching paths with []

Time of First Successful Submission: 2026-01-14 20:55:35

Multiple globs

Time of First Successful Submission: 2026-01-14 20:57:27

Mixing globs

Time of First Successful Submission: 2026-01-14 21:02:45

Exclusionary globbing

Time of First Successful Submission: 2026-01-14 21:08:23

Tab completion

Time of First Successful Submission: 2026-01-14 21:09:53

Multiple options for tab completion

Time of First Successful Submission: 2026-01-14 21:11:11

Tab completion on commands

Time of First Successful Submission: 2026-01-14 21:11:42

Redirecting output

Time of First Successful Submission: 2026-01-14 21:12:47

Redirecting more output

Time of First Successful Submission: 2026-01-14 21:13:59

Appending output

Time of First Successful Submission: 2026-01-14 21:15:50

Redirecting errors

Time of First Successful Submission: 2026-01-14 21:24:17

Redirecting input

Time of First Successful Submission: 2026-01-14 21:25:42

Grepping stored results

Time of First Successful Submission: 2026-01-14 21:26:57

Grepping live output

Time of First Successful Submission: 2026-01-14 21:27:49

Grepping errors

Time of First Successful Submission: 2026-01-14 21:29:02

Filtering with grep -v

Time of First Successful Submission: 2026-01-14 21:30:03

Filtering with sed

Time of First Successful Submission: 2026-01-14 21:31:38

Duplicating piped data with tee

Time of First Successful Submission: 2026-01-14 21:38:11

Process substitution for input

Time of First Successful Submission: 2026-01-18 21:17:11

Writing to multiple programs

Time of First Successful Submission: 2026-01-18 21:23:24

Split-piping stderr and stdout

Time of First Successful Submission: 2026-01-18 21:29:20

Named pipes

Time of First Successful Submission: 2026-01-18 21:34:00

Printing Variables

Time of First Successful Submission: 2026-01-14 22:14:03

Setting Variables

Time of First Successful Submission: 2026-01-14 22:14:54

Multi-word Variables

Time of First Successful Submission: 2026-01-14 22:17:45

Exporting Variables

Time of First Successful Submission: 2026-01-18 21:39:09

Printing Exported Variables

Time of First Successful Submission: 2026-01-14 22:24:56

Storing Command Output

Time of First Successful Submission: 2026-01-14 22:27:13

Reading Input

Time of First Successful Submission: 2026-01-14 22:30:51

Reading Files

Time of First Successful Submission: 2026-01-14 22:31:57

Translating characters

Time of First Successful Submission: 2026-01-18 21:42:08

Deleting characters

Time of First Successful Submission: 2026-01-18 21:42:56

Deleting newlines

Time of First Successful Submission: 2026-01-18 21:44:07

Extracting the first lines with head

Time of First Successful Submission: 2026-01-18 21:45:43

Extracting specific sections of text

Time of First Successful Submission: 2026-01-18 21:48:24

Sorting data

Time of First Successful Submission: 2026-01-18 21:49:20

Listing Processes

Time of First Successful Submission: 2026-01-18 23:32:57

Killing Processes

Time of First Successful Submission: 2026-01-18 23:35:40

Interrupting Processes

Time of First Successful Submission: 2026-01-18 23:37:12

Killing Misbehaving Processes

Time of First Successful Submission: 2026-01-18 23:41:09

Suspending Processes

Time of First Successful Submission: 2026-01-18 23:42:09

Resuming Processes

Time of First Successful Submission: 2026-01-18 23:42:57

Backgrounding Processes

Time of First Successful Submission: 2026-01-18 23:46:04

Foregrounding Processes

Time of First Successful Submission: 2026-01-18 23:47:27

Starting Backgrounded Processes

Time of First Successful Submission: 2026-01-18 23:48:21

Process Exit Codes

Time of First Successful Submission: 2026-01-18 23:50:36

Becoming root with su

Time of First Successful Submission: 2026-01-18 23:52:46

Other users with su

Time of First Successful Submission: 2026-01-18 23:54:18

Cracking passwords

Time of First Successful Submission: 2026-01-18 23:57:43

Using sudo

Time of First Successful Submission: 2026-01-19 00:00:49

Changing File Ownership

Time of First Successful Submission: 2026-01-19 00:03:22

Groups and Files

Time of First Successful Submission: 2026-01-19 00:04:46

Fun With Groups Names

Time of First Successful Submission: 2026-01-19 00:05:41

Changing Permissions

Time of First Successful Submission: 2026-01-19 00:07:00

Executable Files

Time of First Successful Submission: 2026-01-19 00:07:53

Permission Tweaking Practice

Time of First Successful Submission: 2026-01-19 00:12:22

Permissions Setting Practice

Time of First Successful Submission: 2026-01-19 00:17:58

The SUID Bit

Time of First Successful Submission: 2026-01-19 00:21:13

Chaining with Semicolons

Time of First Successful Submission: 2026-01-19 00:22:26

Building on Success

Time of First Successful Submission: 2026-01-19 00:23:17

Handling Failure

Time of First Successful Submission: 2026-01-19 00:24:09

Your First Shell Script

Time of First Successful Submission: 2026-01-19 00:28:44

Redirecting Script Output

Time of First Successful Submission: 2026-01-19 00:29:33

Executable Shell Scripts

Time of First Successful Submission: 2026-01-19 00:33:38

Understanding Shebangs

Time of First Successful Submission: 2026-01-19 00:37:25

Scripting with Arguments

Time of First Successful Submission: 2026-01-19 00:38:54

Scripting with Conditionals

Time of First Successful Submission: 2026-01-19 00:41:14

Scripting with Default Cases

Time of First Successful Submission: 2026-01-19 00:42:16

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-19 00:45:22

Reading Shell Scripts

Time of First Successful Submission: 2026-01-19 00:49:36

Launching Screen

Time of First Successful Submission: 2026-01-19 00:53:04

Detaching and Attaching

Time of First Successful Submission: 2026-01-19 00:54:24

Finding Sessions

Time of First Successful Submission: 2026-01-19 00:55:39

Switching Windows

Time of First Successful Submission: 2026-01-19 00:58:19

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-19 01:00:54

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-19 01:05:20

The PATH Variable

Time of First Successful Submission: 2026-01-19 01:07:21

Setting PATH

Time of First Successful Submission: 2026-01-19 01:08:13

Finding Commands

Time of First Successful Submission: 2026-01-19 01:09:22

Adding Commands

Time of First Successful Submission: 2026-01-19 01:29:23

Hijacking Commands

Time of First Successful Submission: 2026-01-19 01:27:15

Bashrc Backdoor

Time of First Successful Submission: 2026-01-19 01:31:53

Sniffing Input

Time of First Successful Submission: 2026-01-19 01:39:31

Overshared Directories

Time of First Successful Submission: 2026-01-19 03:38:21

Tricky Linking

Time of First Successful Submission: 2026-01-19 02:18:22

Sniffing Process Arguments

Time of First Successful Submission: 2026-01-19 02:23:55

Snooping on Configurations

Time of First Successful Submission: 2026-01-19 02:25:42

The Fork Bomb

Time of First Successful Submission: 2026-01-19 02:42:01

Disk-Space Doomsday

Time of First Successful Submission: 2026-01-19 02:43:46

rm -rf /

Time of First Successful Submission: 2026-01-19 03:00:41

Life after rm -rf /

Time of First Successful Submission: 2026-01-19 03:07:56

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-01-19 03:13:20


Computing 101

94 / 94 498 / 22349


Your First Register

Time of First Successful Submission: 2026-02-23 20:45:59

Your First Syscall

Time of First Successful Submission: 2026-02-23 20:47:15

Exit Codes

Time of First Successful Submission: 2026-02-23 20:49:42

Building Executables

Time of First Successful Submission: 2026-02-23 20:53:26

Moving Between Registers

Time of First Successful Submission: 2026-02-23 20:55:15

Loading From Memory

Time of First Successful Submission: 2026-02-23 20:57:34

More Loading Practice

Time of First Successful Submission: 2026-02-23 20:59:19

Dereferencing Pointers

Time of First Successful Submission: 2026-02-23 21:00:38

Dereferencing Yourself

Time of First Successful Submission: 2026-02-23 21:02:05

Dereferencing with Offsets

Time of First Successful Submission: 2026-02-23 21:03:17

Stored Addresses

Time of First Successful Submission: 2026-02-23 21:04:35

Double Dereference

Time of First Successful Submission: 2026-02-23 21:06:11

The Stack

Time of First Successful Submission: 2026-02-23 21:07:46

Stack Offsets

Time of First Successful Submission: 2026-02-23 21:09:36

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-23 21:13:36

Popping From the Stack

Time of First Successful Submission: 2026-02-23 21:15:11

Disassembling Programs

Time of First Successful Submission: 2026-02-23 21:16:57

Tracing Syscalls

Time of First Successful Submission: 2026-02-24 00:17:15

Starting GDB

Time of First Successful Submission: 2026-02-24 00:19:13

Quitting GDB

Time of First Successful Submission: 2026-02-24 00:19:42

Starting Programs in GDB

Time of First Successful Submission: 2026-02-24 00:21:47

Disassembling in GDB

Time of First Successful Submission: 2026-02-24 00:22:54

Stepping Through Instructions

Time of First Successful Submission: 2026-02-24 00:25:40

Reading Register Values

Time of First Successful Submission: 2026-02-24 00:26:37

Popping Stack Values

Time of First Successful Submission: 2026-02-24 00:36:45

Examining Memory

Time of First Successful Submission: 2026-02-24 00:38:36

Examining Stack Pointers

Time of First Successful Submission: 2026-02-24 00:43:22

Cooperative Debugging

Time of First Successful Submission: 2026-02-24 00:58:10

Writing Output

Time of First Successful Submission: 2026-02-24 01:06:34

Chaining Syscalls

Time of First Successful Submission: 2026-02-24 01:09:55

Writing Strings

Time of First Successful Submission: 2026-02-24 01:11:04

Reading Data

Time of First Successful Submission: 2026-02-24 01:13:49

Opening Files

Time of First Successful Submission: 2026-02-24 01:17:02

Hardcoding the Filename

Time of First Successful Submission: 2026-02-24 01:21:03

Comparing Values

Time of First Successful Submission: 2026-02-24 01:26:59

Comparing Characters

Time of First Successful Submission: 2026-02-24 01:31:37

Conditional Control Flow

Time of First Successful Submission: 2026-02-24 01:35:21

Comparing Strings

Time of First Successful Submission: 2026-02-24 01:37:19

Reverse the Password

Time of First Successful Submission: 2026-02-24 01:40:45

Conditionals Without Conditionals

Time of First Successful Submission: 2026-05-11 20:19:12

Looping

Time of First Successful Submission: 2026-02-24 01:49:47

Reverse the Calculation

Time of First Successful Submission: 2026-02-24 01:52:01

Reverse the Reverse

Time of First Successful Submission: 2026-02-24 01:52:54

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-24 01:53:46

Loops on Data

Time of First Successful Submission: 2026-02-24 01:54:55

set-register

Time of First Successful Submission: 2026-02-24 01:57:00

set-multiple-registers

Time of First Successful Submission: 2026-02-24 01:58:23

add-to-register

Time of First Successful Submission: 2026-02-24 02:00:15

linear-equation-registers

Time of First Successful Submission: 2026-03-05 22:27:59

integer-division

Time of First Successful Submission: 2026-03-05 22:32:32

modulo-operation

Time of First Successful Submission: 2026-03-05 22:34:14

set-upper-byte

Time of First Successful Submission: 2026-03-05 22:40:52

efficient-modulo

Time of First Successful Submission: 2026-03-05 22:54:26

byte-extraction

Time of First Successful Submission: 2026-03-05 22:56:29

bitwise-and

Time of First Successful Submission: 2026-03-05 22:59:40

check-even

Time of First Successful Submission: 2026-03-05 23:02:20

memory-read

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

memory-write

Time of First Successful Submission: 2026-03-05 23:04:55

memory-increment

Time of First Successful Submission: 2026-03-06 01:49:56

byte-access

Time of First Successful Submission: 2026-03-06 01:51:47

memory-size-access

Time of First Successful Submission: 2026-03-06 01:56:41

little-endian-write

Time of First Successful Submission: 2026-03-06 01:58:58

memory-sum

Time of First Successful Submission: 2026-03-06 02:00:54

stack-subtraction

Time of First Successful Submission: 2026-03-06 02:02:42

swap-stack-values

Time of First Successful Submission: 2026-03-06 02:04:33

average-stack-values

Time of First Successful Submission: 2026-03-06 02:07:25

absolute-jump

Time of First Successful Submission: 2026-03-06 02:09:37

relative-jump

Time of First Successful Submission: 2026-03-06 02:14:45

jump-trampoline

Time of First Successful Submission: 2026-03-06 05:38:54

conditional-jump

Time of First Successful Submission: 2026-03-06 05:52:38

indirect-jump

Time of First Successful Submission: 2026-03-06 05:54:48

average-loop

Time of First Successful Submission: 2026-03-06 05:57:05

count-non-zero

Time of First Successful Submission: 2026-03-06 05:59:30

string-lower

Time of First Successful Submission: 2026-03-08 06:53:59

most-common-byte

Time of First Successful Submission: 2026-03-08 06:57:27

Exit

Time of First Successful Submission: 2026-03-08 05:42:22

Socket

Time of First Successful Submission: 2026-03-08 05:44:17

Bind

Time of First Successful Submission: 2026-03-08 05:49:48

Listen

Time of First Successful Submission: 2026-03-08 05:54:09

Accept

Time of First Successful Submission: 2026-03-08 05:59:57

Static Response

Time of First Successful Submission: 2026-03-08 06:08:15

Dynamic Response

Time of First Successful Submission: 2026-03-08 06:16:08

Iterative GET Server

Time of First Successful Submission: 2026-03-08 06:17:25

Concurrent GET Server

Time of First Successful Submission: 2026-03-08 06:19:06

Concurrent POST Server

Time of First Successful Submission: 2026-03-08 06:22:31

Web Server

Time of First Successful Submission: 2026-03-08 06:24:04

Debugging Programs

Time of First Successful Submission: 2026-03-06 19:23:35

Inspecting Registers

Time of First Successful Submission: 2026-03-06 19:25:22

Examining Memory

Time of First Successful Submission: 2026-03-06 19:30:03

Setting Breakpoints

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

GDB Scripting

Time of First Successful Submission: 2026-03-08 05:22:25

Modifying Data

Time of First Successful Submission: 2026-03-08 05:26:09

Modifying Execution

Time of First Successful Submission: 2026-03-08 05:30:42

Broken Functions

Time of First Successful Submission: 2026-03-08 05:39:28


Playing With Programs

65 / 116 4463 / 23776


What's the password?

Time of First Successful Submission: 2026-01-21 16:31:50

... and again!

Time of First Successful Submission: 2026-01-21 16:31:01

Newline Troubles

Time of First Successful Submission: 2026-01-21 16:41:31

Reasoning about files

Time of First Successful Submission: 2026-01-26 03:35:15

Specifying Filenames

Time of First Successful Submission: 2026-01-26 03:37:57

Binary and Hex Encoding

Time of First Successful Submission: 2026-01-26 03:45:19

More Hex

Time of First Successful Submission: 2026-01-26 03:47:12

Decoding Hex

Time of First Successful Submission: 2026-01-26 03:53:02

Decoding Practice

Time of First Successful Submission: 2026-01-26 03:54:58

Encoding Practice

Time of First Successful Submission: 2026-01-26 03:56:59

Hex-encoding ASCII

Time of First Successful Submission: 2026-01-26 03:59:04

Nested Encoding

Time of First Successful Submission: 2026-01-26 04:08:52

Hex-encoding UTF-8

Time of First Successful Submission: 2026-01-26 04:10:33

UTF Mixups

Time of First Successful Submission: 2026-01-26 04:12:16

Modifying Encoded Data

Time of First Successful Submission: 2026-02-04 16:24:32

Decoding Base64

Time of First Successful Submission: 2026-02-04 16:26:07

Encoding Base64

Time of First Successful Submission: 2026-02-04 16:27:16

Dealing with Obfuscation

Time of First Successful Submission: 2026-02-04 16:36:00

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-02-04 16:41:06

Your First HTTP Request

Time of First Successful Submission: 2026-01-26 04:17:33

Reading Flask

Time of First Successful Submission: 2026-01-26 04:18:50

Commented Data

Time of First Successful Submission: 2026-01-26 04:22:30

HTTP Metadata

Time of First Successful Submission: 2026-01-26 04:25:18

HTTP (netcat)

Time of First Successful Submission: 2026-01-26 04:28:55

HTTP Paths (netcat)

Time of First Successful Submission: 2026-01-26 04:31:51

HTTP (curl)

Time of First Successful Submission: 2026-01-26 04:34:57

HTTP (python)

Time of First Successful Submission: 2026-01-26 04:39:46

HTTP Host Header (python)

Time of First Successful Submission: 2026-01-26 04:50:46

HTTP Host Header (curl)

Time of First Successful Submission: 2026-02-02 23:44:45

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-01-26 06:05:29

URL Encoding (netcat)

Time of First Successful Submission: 2026-01-26 06:10:21

HTTP GET Parameters

Time of First Successful Submission: 2026-01-26 06:13:49

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-01-26 06:17:37

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-01-26 06:24:55

HTTP Forms

Time of First Successful Submission: 2026-01-26 06:29:09

HTTP Forms (curl)

Time of First Successful Submission: 2026-01-26 06:32:06

HTTP Forms (netcat)

Time of First Successful Submission: 2026-02-02 23:57:30

HTTP Forms (python)

Time of First Successful Submission: 2026-02-03 00:01:01

HTTP Forms Without Forms

Time of First Successful Submission: 2026-02-03 00:06:35

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-02-03 00:14:36

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-02-04 18:26:32

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-02-03 04:44:45

HTTP Redirects (curl)

Time of First Successful Submission: 2026-02-03 04:47:56

HTTP Redirects (python)

Time of First Successful Submission: 2026-02-03 04:54:34

HTTP Cookies (curl)

Time of First Successful Submission: 2026-02-03 05:08:19

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-02-03 05:16:15

HTTP Cookies (python)

Time of First Successful Submission: 2026-02-03 05:26:11

Server State (python)

Time of First Successful Submission: 2026-02-03 05:30:43

Listening Web

Time of First Successful Submission: 2026-02-03 05:38:05

Speaking Redirects

Time of First Successful Submission: 2026-02-03 06:19:22

JavaScript Redirects

Time of First Successful Submission: 2026-02-03 06:18:05

Including JavaScript

Time of First Successful Submission: 2026-02-03 06:25:58

HTTP (javascript)

Time of First Successful Submission: 2026-02-03 06:35:22

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-02-04 18:05:51

HTTP Forms (javascript)

Time of First Successful Submission: 2026-02-04 18:23:41

SQL Queries

Time of First Successful Submission: 2026-01-26 20:21:57

Filtering SQL

Time of First Successful Submission: 2026-01-26 20:27:48

Choosing Columns

Time of First Successful Submission: 2026-02-03 06:46:41

Exclusionary Filtering

Time of First Successful Submission: 2026-02-03 06:47:59

Filtering Strings

Time of First Successful Submission: 2026-02-03 06:49:06

Filtering on Expressions

Time of First Successful Submission: 2026-02-03 06:52:22

SELECTing Expressions

Time of First Successful Submission: 2026-02-03 07:05:18

Composite Conditions

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

Reaching Your LIMITs

Time of First Successful Submission: 2026-02-03 07:09:11

Querying Metadata

Time of First Successful Submission: 2026-02-03 07:12:51


GCA CTF

5 / 104 33602 / 45680


Using the Terminal

Time of First Successful Submission: 2026-01-14 01:59:42

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-14 02:01:12

Using the GUI Desktop

Time of First Successful Submission: 2026-01-14 02:02:57

Pasting into the Desktop

Time of First Successful Submission: 2026-01-14 02:04:34

Restarting Challenges

Time of First Successful Submission: 2026-01-14 02:08:57