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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-19 08:18:46

Command Arguments

Time of First Successful Submission: 2026-01-19 08:19:12

Command History

Time of First Successful Submission: 2026-01-19 08:19:36

The Root Path

Time of First Successful Submission: 2026-01-19 08:30:24

Absolute Paths

Time of First Successful Submission: 2026-01-19 08:31:00

Changing position

Time of First Successful Submission: 2026-01-19 08:31:53

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-19 08:32:47

Relative Paths

Time of First Successful Submission: 2026-01-19 08:33:28

Cat

Time of First Successful Submission: 2026-01-19 08:41:48

Ls

Time of First Successful Submission: 2026-01-19 08:45:58

Ls All

Time of First Successful Submission: 2026-01-19 08:50:15

Find

Time of First Successful Submission: 2026-01-19 08:55:31

Piping Echo

Time of First Successful Submission: 2026-01-19 21:25:58

Piping Stdout

Time of First Successful Submission: 2026-01-19 21:26:57

Piping Stdin

Time of First Successful Submission: 2026-01-19 21:30:43

Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2026-02-08 10:49:32

Path Traversal 2

Time of First Successful Submission: 2026-02-08 10:54:34

CMDi 1

Time of First Successful Submission: 2026-02-08 11:00:02

CMDi 2

Time of First Successful Submission: 2026-02-08 11:02:20

CMDi 3

Time of First Successful Submission: 2026-02-08 11:04:27

CMDi 4

Time of First Successful Submission: 2026-02-08 11:06:32

CMDi 5

Time of First Successful Submission: 2026-02-08 11:13:16

CMDi 6

Time of First Successful Submission: 2026-02-22 11:14:11

Authentication Bypass 1

Time of First Successful Submission: 2026-02-08 11:15:30

Authentication Bypass 2

Time of First Successful Submission: 2026-02-08 11:17:50

SQLi 1

Time of First Successful Submission: 2026-02-08 11:25:37

SQLi 2

Time of First Successful Submission: 2026-02-08 11:27:03

SQLi 3

Time of First Successful Submission: 2026-02-08 11:32:46

SQLi 4

Time of First Successful Submission: 2026-02-08 11:38:17

SQLi 5

Time of First Successful Submission: 2026-02-08 12:03:32

XSS 1

Time of First Successful Submission: 2026-02-21 06:57:42

XSS 2

Time of First Successful Submission: 2026-02-21 06:59:55

XSS 3

Time of First Successful Submission: 2026-02-21 07:07:12

XSS 4

Time of First Successful Submission: 2026-02-21 07:09:36

XSS 5

Time of First Successful Submission: 2026-02-21 07:39:58

XSS 6

Time of First Successful Submission: 2026-02-21 07:42:29

XSS 7

Time of First Successful Submission: 2026-02-21 08:10:59

CSRF 1

Time of First Successful Submission: 2026-02-21 08:43:08

CSRF 2

Time of First Successful Submission: 2026-02-21 09:35:24

CSRF 3

Time of First Successful Submission: 2026-02-21 09:50:39

CSRF 4

Time of First Successful Submission: 2026-02-21 10:03:18

CSRF 5

Time of First Successful Submission: 2026-02-21 10:24:06

Connect

Time of First Successful Submission: 2026-03-02 06:42:49

Send

Time of First Successful Submission: 2026-03-02 06:43:24

Shutdown

Time of First Successful Submission: 2026-03-02 06:44:18

Listen

Time of First Successful Submission: 2026-03-02 06:45:07

Scan 1

Time of First Successful Submission: 2026-03-02 06:50:27

Scan 2

Time of First Successful Submission: 2026-03-02 07:00:10

Monitor 1

Time of First Successful Submission: 2026-03-02 07:03:44

Monitor 2

Time of First Successful Submission: 2026-03-02 07:06:13

Sniffing Cookies

Time of First Successful Submission: 2026-03-02 07:11:40

Network Configuration

Time of First Successful Submission: 2026-03-02 07:19:53

Firewall 1

Time of First Successful Submission: 2026-03-02 07:20:53

Firewall 2

Time of First Successful Submission: 2026-03-02 07:21:33

Firewall 3

Time of First Successful Submission: 2026-03-02 07:22:11

Denial of Service 1

Time of First Successful Submission: 2026-03-02 07:35:46

Denial of Service 2

Time of First Successful Submission: 2026-03-02 07:39:00

Denial of Service 3

Time of First Successful Submission: 2026-03-02 08:05:48

Ethernet

Time of First Successful Submission: 2026-03-02 08:26:32

IP

Time of First Successful Submission: 2026-03-02 08:28:05

TCP

Time of First Successful Submission: 2026-03-02 08:28:38

TCP Handshake

Time of First Successful Submission: 2026-03-02 08:29:59

UDP

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

UDP 2

Time of First Successful Submission: 2026-03-03 10:16:25

XOR

Time of First Successful Submission: 2026-03-03 10:18:48

XORing Hex

Time of First Successful Submission: 2026-03-03 10:21:19

XORing ASCII

Time of First Successful Submission: 2026-03-03 10:25:05

XORing ASCII Strings

Time of First Successful Submission: 2026-03-03 10:31:24

One-time Pad

Time of First Successful Submission: 2026-03-03 10:35:05

One-time Pad Tampering

Time of First Successful Submission: 2026-03-03 10:37:42

Many-time Pad

Time of First Successful Submission: 2026-03-03 10:46:19

AES

Time of First Successful Submission: 2026-03-03 10:48:46

level1

Time of First Successful Submission: 2026-03-07 05:21:44

level2

Time of First Successful Submission: 2026-03-07 05:23:46

level3

Time of First Successful Submission: 2026-03-07 05:25:16

level4

Time of First Successful Submission: 2026-03-07 05:26:17

level5

Time of First Successful Submission: 2026-03-07 05:28:22

level6

Time of First Successful Submission: 2026-03-07 05:29:19

level7

Time of First Successful Submission: 2026-03-07 05:29:46

level8

Time of First Successful Submission: 2026-03-07 05:30:11

level9

Time of First Successful Submission: 2026-03-07 05:31:34

level10

Time of First Successful Submission: 2026-03-07 05:32:56

level11

Time of First Successful Submission: 2026-03-07 05:35:07

level12

Time of First Successful Submission: 2026-03-07 05:47:25

level13

Time of First Successful Submission: 2026-03-07 05:48:19

level14

Time of First Successful Submission: 2026-03-07 05:50:16

level15

Time of First Successful Submission: 2026-03-07 05:51:01

level16

Time of First Successful Submission: 2026-03-07 05:51:31

level17

Time of First Successful Submission: 2026-03-07 06:25:28

level18

Time of First Successful Submission: 2026-03-07 06:26:55

level19

Time of First Successful Submission: 2026-03-07 06:32:34

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-09 21:53:27

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-09 21:57:42

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-09 22:03:03

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-09 22:03:53

Reading Endianness (C)

Time of First Successful Submission: 2026-03-09 22:06:05

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-09 22:08:17

Version Information (Python)

Time of First Successful Submission: 2026-03-09 22:09:18

Version Information (C)

Time of First Successful Submission: 2026-03-09 22:11:48

Version Information (x86)

Time of First Successful Submission: 2026-03-09 22:13:51

Metadata and Data (Python)

Time of First Successful Submission: 2026-03-09 22:14:51

Metadata and Data (C)

Time of First Successful Submission: 2026-03-09 22:16:22

Metadata and Data (x86)

Time of First Successful Submission: 2026-03-09 22:17:24

Input Restrictions (Python)

Time of First Successful Submission: 2026-03-09 22:18:04

Input Restrictions (C)

Time of First Successful Submission: 2026-03-09 22:20:43

Input Restrictions (x86)

Time of First Successful Submission: 2026-03-09 22:21:20

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-03-09 22:21:54

Behold the cIMG! (C)

Time of First Successful Submission: 2026-03-09 22:22:51

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-03-09 22:28:28

A Basic cIMG (Python)

Time of First Successful Submission: 2026-03-09 22:30:12

A Basic cIMG (C)

Time of First Successful Submission: 2026-03-09 22:31:15

A Basic cIMG (x86)

Time of First Successful Submission: 2026-03-09 22:48:14

Internal State Mini (C)

Time of First Successful Submission: 2026-03-09 22:54:19

Internal State Mini (x86)

Time of First Successful Submission: 2026-03-09 22:55:36

Internal State (C)

Time of First Successful Submission: 2026-03-09 23:02:43

Internal State (x86)

Time of First Successful Submission: 2026-03-09 23:03:48

File Formats: Directives (C)

Time of First Successful Submission: 2026-03-09 23:07:06

File Formats: Directives (x86)

Time of First Successful Submission: 2026-03-09 23:24:04

The Patch Directive

Time of First Successful Submission: 2026-03-10 00:16:49

Optimizing for Space

Time of First Successful Submission: 2026-03-10 00:44:13

Tweaking Images

Time of First Successful Submission: 2026-03-10 00:57:03

Storage and Retrieval

Time of First Successful Submission: 2026-03-10 01:15:24

Accessing Resources

Time of First Successful Submission: 2026-03-23 04:13:35

Unsafe Animations

Time of First Successful Submission: 2026-03-20 23:35:04

Animations

Time of First Successful Submission: 2026-03-17 05:05:56

Interoperability: Patching Data

Time of First Successful Submission: 2026-03-17 05:01:51

Patching Code

Time of First Successful Submission: 2026-03-17 04:52:17

Patching Control Flow

Time of First Successful Submission: 2026-03-17 04:36:28

Your First Overflow (easy)

Time of First Successful Submission: 2026-03-30 08:23:06

Your First Overflow (hard)

Time of First Successful Submission: 2026-03-30 08:32:19

Precision (easy)

Time of First Successful Submission: 2026-03-30 08:34:11

Precision (hard)

Time of First Successful Submission: 2026-03-30 08:28:51

Variable Control (easy)

Time of First Successful Submission: 2026-03-30 08:35:28

Variable Control (hard)

Time of First Successful Submission: 2026-03-30 08:36:43

Control Hijack (easy)

Time of First Successful Submission: 2026-03-30 08:38:31

Control Hijack (hard)

Time of First Successful Submission: 2026-03-30 08:39:50

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-03-30 08:42:04

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-03-30 08:43:10

PIEs (easy)

Time of First Successful Submission: 2026-03-30 08:45:07

PIEs (hard)

Time of First Successful Submission: 2026-03-30 08:47:09

String Lengths (easy)

Time of First Successful Submission: 2026-03-30 08:50:31

String Lengths (hard)

Time of First Successful Submission: 2026-03-30 08:51:42

Basic Shellcode

Time of First Successful Submission: 2026-03-30 08:53:22

NOP Sleds

Time of First Successful Submission: 2026-03-30 08:54:05

NULL-Free Shellcode

Time of First Successful Submission: 2026-03-30 08:55:13

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2026-03-30 08:57:51

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2026-03-30 08:59:26

Hijack to Shellcode (easy)

Time of First Successful Submission: 2026-03-30 09:01:37

Hijack to Shellcode (hard)

Time of First Successful Submission: 2026-03-30 09:03:13

Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-19 08:05:18

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-19 08:06:24

Using the GUI Desktop

Time of First Successful Submission: 2026-01-19 08:08:35

Pasting into the Desktop

Time of First Successful Submission: 2026-01-19 08:09:43

Restarting Challenges

Time of First Successful Submission: 2026-01-19 08:11:24

Challenge Programs

Time of First Successful Submission: 2026-03-01 10:23:38

The Flag File

Time of First Successful Submission: 2026-03-01 10:24:05

Using Privileged Mode

Time of First Successful Submission: 2026-03-01 10:25:47

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-01 10:27:33

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-01 10:27:48

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-19 08:18:46

Intro to Arguments

Time of First Successful Submission: 2026-01-19 08:19:12

Command History

Time of First Successful Submission: 2026-01-19 08:19:36

The Root

Time of First Successful Submission: 2026-01-19 08:30:24

Program and absolute paths

Time of First Successful Submission: 2026-01-19 08:31:00

Position thy self

Time of First Successful Submission: 2026-01-19 08:31:53

Position elsewhere

Time of First Successful Submission: 2026-01-19 08:32:47

implicit relative paths, from /

Time of First Successful Submission: 2026-01-19 08:33:28

explicit relative paths, from /

Time of First Successful Submission: 2026-01-19 08:34:54

implicit relative path

Time of First Successful Submission: 2026-01-19 08:35:30

home sweet home

Time of First Successful Submission: 2026-01-19 08:40:58

cat: not the pet, but the command!

Time of First Successful Submission: 2026-01-19 08:41:48

catting absolute paths

Time of First Successful Submission: 2026-01-19 08:42:32

more catting practice

Time of First Successful Submission: 2026-01-19 08:43:18

grepping for a needle in a haystack

Time of First Successful Submission: 2026-01-19 08:44:04

comparing files

Time of First Successful Submission: 2026-01-19 08:44:46

listing files

Time of First Successful Submission: 2026-01-19 08:45:58

touching files

Time of First Successful Submission: 2026-01-19 08:46:35

removing files

Time of First Successful Submission: 2026-01-19 08:47:05

moving files

Time of First Successful Submission: 2026-01-19 08:48:18

copying files

Time of First Successful Submission: 2026-01-19 08:48:44

hidden files

Time of First Successful Submission: 2026-01-19 08:50:15

An Epic Filesystem Quest

Time of First Successful Submission: 2026-01-19 08:53:16

making directories

Time of First Successful Submission: 2026-01-19 08:53:51

finding files

Time of First Successful Submission: 2026-01-19 08:55:31

linking files

Time of First Successful Submission: 2026-01-19 21:00:22

Learning From Documentation

Time of First Successful Submission: 2026-01-19 21:01:12

Learning Complex Usage

Time of First Successful Submission: 2026-01-19 21:01:59

Reading Manuals

Time of First Successful Submission: 2026-01-19 21:04:03

Searching Manuals

Time of First Successful Submission: 2026-01-19 21:05:13

Searching For Manuals

Time of First Successful Submission: 2026-01-19 21:08:57

Helpful Programs

Time of First Successful Submission: 2026-01-19 21:10:48

Help for Builtins

Time of First Successful Submission: 2026-01-19 21:11:31

Matching with *

Time of First Successful Submission: 2026-01-19 21:12:59

Matching with ?

Time of First Successful Submission: 2026-01-19 21:13:38

Matching with []

Time of First Successful Submission: 2026-01-19 21:14:25

Matching paths with []

Time of First Successful Submission: 2026-01-19 21:15:12

Multiple globs

Time of First Successful Submission: 2026-01-19 21:16:12

Mixing globs

Time of First Successful Submission: 2026-01-19 21:20:43

Exclusionary globbing

Time of First Successful Submission: 2026-01-19 21:21:51

Tab completion

Time of First Successful Submission: 2026-01-19 21:23:13

Multiple options for tab completion

Time of First Successful Submission: 2026-01-19 21:24:09

Tab completion on commands

Time of First Successful Submission: 2026-01-19 21:25:02

Redirecting output

Time of First Successful Submission: 2026-01-19 21:25:58

Redirecting more output

Time of First Successful Submission: 2026-01-19 21:26:57

Appending output

Time of First Successful Submission: 2026-01-19 21:28:01

Redirecting errors

Time of First Successful Submission: 2026-01-19 21:29:19

Redirecting input

Time of First Successful Submission: 2026-01-19 21:30:43

Grepping stored results

Time of First Successful Submission: 2026-01-19 21:38:35

Grepping live output

Time of First Successful Submission: 2026-01-19 21:39:24

Grepping errors

Time of First Successful Submission: 2026-01-19 21:41:09

Filtering with grep -v

Time of First Successful Submission: 2026-01-19 21:42:04

Filtering with sed

Time of First Successful Submission: 2026-01-19 21:43:28

Duplicating piped data with tee

Time of First Successful Submission: 2026-01-19 21:46:02

Process substitution for input

Time of First Successful Submission: 2026-01-19 21:48:42

Writing to multiple programs

Time of First Successful Submission: 2026-01-20 02:16:40

Split-piping stderr and stdout

Time of First Successful Submission: 2026-01-20 02:21:09

Named pipes

Time of First Successful Submission: 2026-01-20 02:24:10

Printing Variables

Time of First Successful Submission: 2026-01-20 02:25:01

Setting Variables

Time of First Successful Submission: 2026-01-20 02:25:45

Multi-word Variables

Time of First Successful Submission: 2026-01-20 02:27:18

Exporting Variables

Time of First Successful Submission: 2026-01-20 02:28:38

Printing Exported Variables

Time of First Successful Submission: 2026-01-20 02:29:10

Storing Command Output

Time of First Successful Submission: 2026-01-20 02:31:45

Reading Input

Time of First Successful Submission: 2026-01-20 02:32:34

Reading Files

Time of First Successful Submission: 2026-01-20 02:33:59

Translating characters

Time of First Successful Submission: 2026-01-20 02:37:31

Deleting characters

Time of First Successful Submission: 2026-01-20 02:38:05

Deleting newlines

Time of First Successful Submission: 2026-01-20 02:39:16

Extracting the first lines with head

Time of First Successful Submission: 2026-01-20 02:40:08

Extracting specific sections of text

Time of First Successful Submission: 2026-01-20 02:43:06

Sorting data

Time of First Successful Submission: 2026-01-20 02:44:05

Listing Processes

Time of First Successful Submission: 2026-01-20 02:46:31

Killing Processes

Time of First Successful Submission: 2026-01-20 02:47:47

Interrupting Processes

Time of First Successful Submission: 2026-01-20 02:48:20

Killing Misbehaving Processes

Time of First Successful Submission: 2026-01-20 02:55:00

Suspending Processes

Time of First Successful Submission: 2026-01-20 02:56:03

Resuming Processes

Time of First Successful Submission: 2026-01-20 02:56:44

Backgrounding Processes

Time of First Successful Submission: 2026-01-20 02:58:00

Foregrounding Processes

Time of First Successful Submission: 2026-01-20 03:04:33

Starting Backgrounded Processes

Time of First Successful Submission: 2026-01-20 03:04:58

Process Exit Codes

Time of First Successful Submission: 2026-01-20 03:05:54

Becoming root with su

Time of First Successful Submission: 2026-01-20 03:08:39

Other users with su

Time of First Successful Submission: 2026-01-20 03:09:10

Cracking passwords

Time of First Successful Submission: 2026-01-20 03:11:26

Using sudo

Time of First Successful Submission: 2026-01-20 03:13:21

Changing File Ownership

Time of First Successful Submission: 2026-01-20 04:22:22

Groups and Files

Time of First Successful Submission: 2026-01-20 04:23:43

Fun With Groups Names

Time of First Successful Submission: 2026-01-20 04:24:25

Changing Permissions

Time of First Successful Submission: 2026-01-20 04:27:25

Executable Files

Time of First Successful Submission: 2026-01-20 04:28:24

Permission Tweaking Practice

Time of First Successful Submission: 2026-01-20 04:37:02

Permissions Setting Practice

Time of First Successful Submission: 2026-01-20 04:39:08

The SUID Bit

Time of First Successful Submission: 2026-01-20 04:40:19

Chaining with Semicolons

Time of First Successful Submission: 2026-01-20 04:41:01

Building on Success

Time of First Successful Submission: 2026-01-20 04:41:38

Handling Failure

Time of First Successful Submission: 2026-01-20 04:42:04

Your First Shell Script

Time of First Successful Submission: 2026-01-20 04:43:23

Redirecting Script Output

Time of First Successful Submission: 2026-01-20 04:45:42

Executable Shell Scripts

Time of First Successful Submission: 2026-01-20 04:48:04

Understanding Shebangs

Time of First Successful Submission: 2026-01-20 04:50:52

Scripting with Arguments

Time of First Successful Submission: 2026-01-20 04:54:13

Scripting with Conditionals

Time of First Successful Submission: 2026-01-20 04:55:33

Scripting with Default Cases

Time of First Successful Submission: 2026-01-20 04:56:35

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-20 04:57:39

Reading Shell Scripts

Time of First Successful Submission: 2026-01-20 04:59:09

Launching Screen

Time of First Successful Submission: 2026-01-20 05:00:00

Detaching and Attaching

Time of First Successful Submission: 2026-01-20 05:01:28

Finding Sessions

Time of First Successful Submission: 2026-01-20 05:02:38

Switching Windows

Time of First Successful Submission: 2026-01-20 05:03:34

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-20 05:04:15

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-20 05:04:46

The PATH Variable

Time of First Successful Submission: 2026-01-20 05:05:37

Setting PATH

Time of First Successful Submission: 2026-01-20 05:06:22

Finding Commands

Time of First Successful Submission: 2026-01-20 05:07:06

Adding Commands

Time of First Successful Submission: 2026-01-20 05:15:50

Hijacking Commands

Time of First Successful Submission: 2026-01-20 05:19:02

Bashrc Backdoor

Time of First Successful Submission: 2026-02-05 06:53:17

Sniffing Input

Time of First Successful Submission: 2026-02-05 07:26:54

Overshared Directories

Time of First Successful Submission: 2026-02-05 07:30:41

Tricky Linking

Time of First Successful Submission: 2026-02-05 07:41:36

Sniffing Process Arguments

Time of First Successful Submission: 2026-02-05 07:43:21

Snooping on Configurations

Time of First Successful Submission: 2026-02-05 07:47:22

The Fork Bomb

Time of First Successful Submission: 2026-02-05 07:57:54

Disk-Space Doomsday

Time of First Successful Submission: 2026-02-05 08:13:35

rm -rf /

Time of First Successful Submission: 2026-02-05 08:16:21

Life after rm -rf /

Time of First Successful Submission: 2026-02-05 08:26:48

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-02-05 08:32:03

Computing 101

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Your First Register

Time of First Successful Submission: 2026-02-25 18:04:27

Your First Syscall

Time of First Successful Submission: 2026-02-25 18:05:18

Exit Codes

Time of First Successful Submission: 2026-02-25 18:06:36

Building Executables

Time of First Successful Submission: 2026-02-25 18:10:25

Moving Between Registers

Time of First Successful Submission: 2026-02-25 18:14:10

Loading From Memory

Time of First Successful Submission: 2026-02-25 18:26:38

More Loading Practice

Time of First Successful Submission: 2026-02-25 18:27:42

Dereferencing Pointers

Time of First Successful Submission: 2026-03-01 03:23:45

Dereferencing Yourself

Time of First Successful Submission: 2026-03-01 03:25:13

Dereferencing with Offsets

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

Stored Addresses

Time of First Successful Submission: 2026-03-01 03:27:10

Double Dereference

Time of First Successful Submission: 2026-03-01 03:28:09

The Stack

Time of First Successful Submission: 2026-03-01 03:29:30

Stack Offsets

Time of First Successful Submission: 2026-03-01 03:31:38

Program Arguments on the Stack

Time of First Successful Submission: 2026-03-01 03:32:50

Popping From the Stack

Time of First Successful Submission: 2026-03-01 03:34:30

Disassembling Programs

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

Tracing Syscalls

Time of First Successful Submission: 2026-03-01 03:39:46

Starting GDB

Time of First Successful Submission: 2026-03-01 03:40:18

Quitting GDB

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

Starting Programs in GDB

Time of First Successful Submission: 2026-03-01 03:42:14

Disassembling in GDB

Time of First Successful Submission: 2026-03-01 03:42:50

Stepping Through Instructions

Time of First Successful Submission: 2026-03-01 03:43:41

Reading Register Values

Time of First Successful Submission: 2026-03-01 03:44:26

Popping Stack Values

Time of First Successful Submission: 2026-03-01 03:45:11

Examining Memory

Time of First Successful Submission: 2026-03-01 03:45:47

Examining Stack Pointers

Time of First Successful Submission: 2026-03-01 03:46:40

Cooperative Debugging

Time of First Successful Submission: 2026-03-01 03:48:24

Writing Output

Time of First Successful Submission: 2026-03-01 03:55:30

Chaining Syscalls

Time of First Successful Submission: 2026-03-01 03:56:54

Writing Strings

Time of First Successful Submission: 2026-03-01 03:57:29

Reading Data

Time of First Successful Submission: 2026-03-01 04:01:38

Opening Files

Time of First Successful Submission: 2026-03-01 04:08:35

Hardcoding the Filename

Time of First Successful Submission: 2026-03-01 04:11:12

Comparing Values

Time of First Successful Submission: 2026-03-01 04:30:08

Comparing Characters

Time of First Successful Submission: 2026-03-01 04:31:28

Conditional Control Flow

Time of First Successful Submission: 2026-03-01 04:33:46

Comparing Strings

Time of First Successful Submission: 2026-03-01 04:34:56

Reverse the Password

Time of First Successful Submission: 2026-03-01 04:37:04

Conditionals Without Conditionals

Time of First Successful Submission: 2026-03-01 04:44:18

Looping

Time of First Successful Submission: 2026-03-01 04:48:19

Reverse the Calculation

Time of First Successful Submission: 2026-03-01 05:07:07

Reverse the Reverse

Time of First Successful Submission: 2026-03-01 05:11:25

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-03-01 05:13:27

Loops on Data

Time of First Successful Submission: 2026-03-01 05:15:31

set-register

Time of First Successful Submission: 2026-03-01 05:17:48

set-multiple-registers

Time of First Successful Submission: 2026-03-01 05:18:45

add-to-register

Time of First Successful Submission: 2026-03-01 05:19:18

linear-equation-registers

Time of First Successful Submission: 2026-03-01 05:20:27

integer-division

Time of First Successful Submission: 2026-03-01 05:22:14

modulo-operation

Time of First Successful Submission: 2026-03-01 05:23:10

set-upper-byte

Time of First Successful Submission: 2026-03-01 05:24:21

efficient-modulo

Time of First Successful Submission: 2026-03-01 05:47:08

byte-extraction

Time of First Successful Submission: 2026-03-01 05:49:33

bitwise-and

Time of First Successful Submission: 2026-03-01 05:51:31

check-even

Time of First Successful Submission: 2026-03-01 05:56:22

memory-read

Time of First Successful Submission: 2026-03-01 05:58:00

memory-write

Time of First Successful Submission: 2026-03-01 06:00:47

memory-increment

Time of First Successful Submission: 2026-03-01 06:04:53

byte-access

Time of First Successful Submission: 2026-03-01 06:06:32

memory-size-access

Time of First Successful Submission: 2026-03-01 06:07:57

little-endian-write

Time of First Successful Submission: 2026-03-01 06:12:27

memory-sum

Time of First Successful Submission: 2026-03-01 06:19:32

stack-subtraction

Time of First Successful Submission: 2026-03-01 06:22:31

swap-stack-values

Time of First Successful Submission: 2026-03-01 06:23:45

average-stack-values

Time of First Successful Submission: 2026-03-01 06:27:17

absolute-jump

Time of First Successful Submission: 2026-03-01 06:27:56

relative-jump

Time of First Successful Submission: 2026-03-01 06:31:50

jump-trampoline

Time of First Successful Submission: 2026-03-01 06:33:00

conditional-jump

Time of First Successful Submission: 2026-03-01 06:48:36

indirect-jump

Time of First Successful Submission: 2026-03-01 06:58:31

average-loop

Time of First Successful Submission: 2026-03-01 07:05:11

count-non-zero

Time of First Successful Submission: 2026-03-01 07:30:37

string-lower

Time of First Successful Submission: 2026-03-01 07:47:04

most-common-byte

Time of First Successful Submission: 2026-03-01 07:55:39

Exit

Time of First Successful Submission: 2026-03-01 09:30:04

Socket

Time of First Successful Submission: 2026-03-01 09:40:06

Bind

Time of First Successful Submission: 2026-03-01 09:54:41

Listen

Time of First Successful Submission: 2026-03-01 09:55:54

Accept

Time of First Successful Submission: 2026-03-01 09:57:34

Static Response

Time of First Successful Submission: 2026-03-01 10:07:16

Dynamic Response

Time of First Successful Submission: 2026-03-01 10:10:44

Iterative GET Server

Time of First Successful Submission: 2026-03-01 10:13:29

Concurrent GET Server

Time of First Successful Submission: 2026-03-01 10:16:27

Concurrent POST Server

Time of First Successful Submission: 2026-03-01 10:20:53

Web Server

Time of First Successful Submission: 2026-03-01 10:22:46

Debugging Programs

Time of First Successful Submission: 2026-03-01 07:57:04

Inspecting Registers

Time of First Successful Submission: 2026-03-01 07:58:53

Examining Memory

Time of First Successful Submission: 2026-03-01 08:07:46

Setting Breakpoints

Time of First Successful Submission: 2026-03-01 08:24:42

GDB Scripting

Time of First Successful Submission: 2026-03-01 09:16:37

Modifying Data

Time of First Successful Submission: 2026-03-01 09:21:00

Modifying Execution

Time of First Successful Submission: 2026-03-01 09:24:15

Broken Functions

Time of First Successful Submission: 2026-03-01 09:28:07

Playing With Programs

116 / 116 779 / 23386

What's the password?

Time of First Successful Submission: 2026-02-05 10:44:36

... and again!

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

Newline Troubles

Time of First Successful Submission: 2026-02-05 10:46:45

Reasoning about files

Time of First Successful Submission: 2026-02-05 10:51:51

Specifying Filenames

Time of First Successful Submission: 2026-02-05 10:52:59

Binary and Hex Encoding

Time of First Successful Submission: 2026-02-05 10:56:06

More Hex

Time of First Successful Submission: 2026-02-05 10:57:14

Decoding Hex

Time of First Successful Submission: 2026-02-05 10:59:45

Decoding Practice

Time of First Successful Submission: 2026-02-05 11:04:51

Encoding Practice

Time of First Successful Submission: 2026-02-05 11:05:54

Hex-encoding ASCII

Time of First Successful Submission: 2026-02-05 11:09:35

Nested Encoding

Time of First Successful Submission: 2026-02-05 11:17:00

Hex-encoding UTF-8

Time of First Successful Submission: 2026-02-07 07:13:46

UTF Mixups

Time of First Successful Submission: 2026-02-07 07:37:27

Modifying Encoded Data

Time of First Successful Submission: 2026-02-07 07:41:35

Decoding Base64

Time of First Successful Submission: 2026-02-07 07:52:34

Encoding Base64

Time of First Successful Submission: 2026-02-07 07:54:03

Dealing with Obfuscation

Time of First Successful Submission: 2026-02-07 07:55:37

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-02-07 07:58:57

Your First HTTP Request

Time of First Successful Submission: 2026-02-07 08:01:29

Reading Flask

Time of First Successful Submission: 2026-02-07 08:04:38

Commented Data

Time of First Successful Submission: 2026-02-07 08:06:25

HTTP Metadata

Time of First Successful Submission: 2026-02-07 08:07:47

HTTP (netcat)

Time of First Successful Submission: 2026-02-07 08:13:30

HTTP Paths (netcat)

Time of First Successful Submission: 2026-02-08 05:27:59

HTTP (curl)

Time of First Successful Submission: 2026-02-07 08:16:03

HTTP (python)

Time of First Successful Submission: 2026-02-07 08:17:45

HTTP Host Header (python)

Time of First Successful Submission: 2026-02-07 08:19:32

HTTP Host Header (curl)

Time of First Successful Submission: 2026-02-07 08:22:44

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-02-08 05:28:28

URL Encoding (netcat)

Time of First Successful Submission: 2026-02-07 08:28:22

HTTP GET Parameters

Time of First Successful Submission: 2026-02-07 08:30:33

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-02-07 08:32:33

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-02-07 08:34:24

HTTP Forms

Time of First Successful Submission: 2026-02-07 08:37:21

HTTP Forms (curl)

Time of First Successful Submission: 2026-02-08 05:31:48

HTTP Forms (netcat)

Time of First Successful Submission: 2026-02-08 05:41:39

HTTP Forms (python)

Time of First Successful Submission: 2026-02-08 05:43:55

HTTP Forms Without Forms

Time of First Successful Submission: 2026-02-08 05:46:28

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-02-08 05:50:22

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-02-08 05:59:59

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-02-08 06:03:21

HTTP Redirects (curl)

Time of First Successful Submission: 2026-02-08 06:04:51

HTTP Redirects (python)

Time of First Successful Submission: 2026-02-08 06:06:15

HTTP Cookies (curl)

Time of First Successful Submission: 2026-02-08 06:13:31

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-02-08 06:17:12

HTTP Cookies (python)

Time of First Successful Submission: 2026-02-08 06:18:08

Server State (python)

Time of First Successful Submission: 2026-02-08 06:18:46

Listening Web

Time of First Successful Submission: 2026-02-08 06:22:25

Speaking Redirects

Time of First Successful Submission: 2026-02-08 06:35:15

JavaScript Redirects

Time of First Successful Submission: 2026-02-22 09:44:29

Including JavaScript

Time of First Successful Submission: 2026-02-22 09:54:11

HTTP (javascript)

Time of First Successful Submission: 2026-02-22 10:04:33

HTTP Get Parameters (javascript)

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

HTTP Forms (javascript)

Time of First Successful Submission: 2026-02-22 10:10:12

cat

Time of First Successful Submission: 2026-03-01 10:28:19

more

Time of First Successful Submission: 2026-03-01 10:28:37

less

Time of First Successful Submission: 2026-03-01 10:28:54

tail

Time of First Successful Submission: 2026-03-01 10:29:13

head

Time of First Successful Submission: 2026-03-01 10:29:28

sort

Time of First Successful Submission: 2026-03-01 10:29:43

vim

Time of First Successful Submission: 2026-03-01 10:30:11

emacs

Time of First Successful Submission: 2026-03-01 10:30:33

nano

Time of First Successful Submission: 2026-03-01 10:30:47

rev

Time of First Successful Submission: 2026-03-01 10:31:17

od

Time of First Successful Submission: 2026-03-01 10:32:54

hd

Time of First Successful Submission: 2026-03-01 10:33:43

xxd

Time of First Successful Submission: 2026-03-01 10:34:33

base32

Time of First Successful Submission: 2026-03-01 10:35:11

base64

Time of First Successful Submission: 2026-03-01 10:35:42

split

Time of First Successful Submission: 2026-03-01 10:36:30

gzip

Time of First Successful Submission: 2026-03-02 05:53:26

bzip2

Time of First Successful Submission: 2026-03-02 05:53:52

zip

Time of First Successful Submission: 2026-03-02 05:54:50

tar

Time of First Successful Submission: 2026-03-02 05:55:10

ar

Time of First Successful Submission: 2026-03-02 05:55:43

cpio

Time of First Successful Submission: 2026-03-02 05:56:16

genisoimage

Time of First Successful Submission: 2026-03-02 06:16:38

env

Time of First Successful Submission: 2026-03-02 06:17:10

find

Time of First Successful Submission: 2026-03-02 06:17:28

make

Time of First Successful Submission: 2026-03-02 06:18:17

nice

Time of First Successful Submission: 2026-03-02 06:18:31

timeout

Time of First Successful Submission: 2026-03-02 06:18:48

stdbuf

Time of First Successful Submission: 2026-03-02 06:19:04

setarch

Time of First Successful Submission: 2026-03-02 06:19:29

watch

Time of First Successful Submission: 2026-03-02 06:19:45

socat

Time of First Successful Submission: 2026-03-02 06:20:01

whiptail

Time of First Successful Submission: 2026-03-02 06:20:23

awk

Time of First Successful Submission: 2026-03-02 06:20:44

sed

Time of First Successful Submission: 2026-03-02 06:20:59

ed

Time of First Successful Submission: 2026-03-02 06:21:29

chown

Time of First Successful Submission: 2026-03-02 06:22:00

chmod

Time of First Successful Submission: 2026-03-02 06:22:26

cp

Time of First Successful Submission: 2026-03-02 06:23:24

mv

Time of First Successful Submission: 2026-03-02 08:40:52

perl

Time of First Successful Submission: 2026-03-02 08:41:14

python

Time of First Successful Submission: 2026-03-02 08:44:08

ruby

Time of First Successful Submission: 2026-03-02 08:44:47

bash

Time of First Successful Submission: 2026-03-02 08:45:28

date

Time of First Successful Submission: 2026-03-02 08:45:49

dmesg

Time of First Successful Submission: 2026-03-02 08:46:06

wc

Time of First Successful Submission: 2026-03-02 08:46:27

gcc

Time of First Successful Submission: 2026-03-02 08:46:48

as

Time of First Successful Submission: 2026-03-02 08:47:05

wget

Time of First Successful Submission: 2026-03-02 08:48:18

ssh-keygen

Time of First Successful Submission: 2026-03-02 08:50:55

SQL Queries

Time of First Successful Submission: 2026-02-22 10:39:24

Filtering SQL

Time of First Successful Submission: 2026-02-22 10:41:47

Choosing Columns

Time of First Successful Submission: 2026-02-22 10:42:47

Exclusionary Filtering

Time of First Successful Submission: 2026-02-22 10:44:45

Filtering Strings

Time of First Successful Submission: 2026-02-22 10:45:58

Filtering on Expressions

Time of First Successful Submission: 2026-02-22 10:47:34

SELECTing Expressions

Time of First Successful Submission: 2026-02-22 11:01:20

Composite Conditions

Time of First Successful Submission: 2026-02-22 11:02:47

Reaching Your LIMITs

Time of First Successful Submission: 2026-02-22 11:03:46

Querying Metadata

Time of First Successful Submission: 2026-02-22 11:05:34

GCA CTF

11 / 104 8490 / 43655

Using the Terminal

Time of First Successful Submission: 2026-01-19 08:05:18

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-19 08:06:24

Using the GUI Desktop

Time of First Successful Submission: 2026-01-19 08:08:35

Pasting into the Desktop

Time of First Successful Submission: 2026-01-19 08:09:43

Connecting over SSH

Time of First Successful Submission: 2026-02-05 09:13:57

Restarting Challenges

Time of First Successful Submission: 2026-01-19 08:11:24

Challenge Programs

Time of First Successful Submission: 2026-03-01 10:23:38

The Flag File

Time of First Successful Submission: 2026-03-01 10:24:05

Using Privileged Mode

Time of First Successful Submission: 2026-03-01 10:25:47

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-01 10:27:33

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-01 10:27:48