shyguy

Hong Kong SAR China

Intro to Programming Languages

10 / 234 21589 / 32315

Commands

Time of First Successful Submission: 2026-03-23 12:06:11

Command Arguments

Time of First Successful Submission: 2026-03-23 12:07:19

Command History

Time of First Successful Submission: 2026-03-23 12:07:00

The Root Path

Time of First Successful Submission: 2026-03-26 05:52:58

Absolute Paths

Time of First Successful Submission: 2026-03-24 00:00:32

Changing position

Time of First Successful Submission: 2026-03-26 05:53:41

Changing to an Absolute Path

Time of First Successful Submission: 2026-03-26 05:54:44

Relative Paths

Time of First Successful Submission: 2026-03-27 03:09:58

Cat

Time of First Successful Submission: 2026-03-31 05:25:23

Ls

Time of First Successful Submission: 2026-04-01 16:27:53

Intro to Cybersecurity

183 / 183 171 / 20173

Path Traversal 1

Time of First Successful Submission: 2026-03-13 08:54:03

Path Traversal 2

Time of First Successful Submission: 2026-03-13 08:55:16

CMDi 1

Time of First Successful Submission: 2026-03-13 08:57:22

CMDi 2

Time of First Successful Submission: 2026-03-13 09:03:12

CMDi 3

Time of First Successful Submission: 2026-03-13 09:04:52

CMDi 4

Time of First Successful Submission: 2026-03-13 09:06:42

CMDi 5

Time of First Successful Submission: 2026-03-13 09:07:51

CMDi 6

Time of First Successful Submission: 2026-03-13 09:08:50

Authentication Bypass 1

Time of First Successful Submission: 2026-03-13 09:10:02

Authentication Bypass 2

Time of First Successful Submission: 2026-03-13 09:10:59

SQLi 1

Time of First Successful Submission: 2026-03-13 09:12:30

SQLi 2

Time of First Successful Submission: 2026-03-13 09:13:54

SQLi 3

Time of First Successful Submission: 2026-03-13 09:16:02

SQLi 4

Time of First Successful Submission: 2026-03-13 09:17:00

SQLi 5

Time of First Successful Submission: 2026-03-13 09:18:53

XSS 1

Time of First Successful Submission: 2026-03-13 09:20:03

XSS 2

Time of First Successful Submission: 2026-03-13 09:21:59

XSS 3

Time of First Successful Submission: 2026-03-13 09:23:09

XSS 4

Time of First Successful Submission: 2026-03-13 09:28:17

XSS 5

Time of First Successful Submission: 2026-03-13 09:49:29

XSS 6

Time of First Successful Submission: 2026-03-13 09:35:32

XSS 7

Time of First Successful Submission: 2026-03-13 09:41:39

CSRF 1

Time of First Successful Submission: 2026-03-13 09:44:06

CSRF 2

Time of First Successful Submission: 2026-03-13 09:45:34

CSRF 3

Time of First Successful Submission: 2026-03-13 09:47:12

CSRF 4

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

CSRF 5

Time of First Successful Submission: 2026-03-13 09:53:37

Connect

Time of First Successful Submission: 2026-03-13 10:01:52

Send

Time of First Successful Submission: 2026-03-13 10:03:53

Shutdown

Time of First Successful Submission: 2026-03-13 10:04:42

Listen

Time of First Successful Submission: 2026-03-13 10:05:29

Scan 1

Time of First Successful Submission: 2026-03-13 10:11:22

Scan 2

Time of First Successful Submission: 2026-03-13 10:14:11

Monitor 1

Time of First Successful Submission: 2026-03-13 10:21:31

Monitor 2

Time of First Successful Submission: 2026-03-13 12:20:20

Sniffing Cookies

Time of First Successful Submission: 2026-03-13 12:24:47

Network Configuration

Time of First Successful Submission: 2026-03-13 12:27:17

Firewall 1

Time of First Successful Submission: 2026-03-13 12:28:48

Firewall 2

Time of First Successful Submission: 2026-03-13 12:31:07

Firewall 3

Time of First Successful Submission: 2026-03-13 12:33:14

Denial of Service 1

Time of First Successful Submission: 2026-03-13 12:36:15

Denial of Service 2

Time of First Successful Submission: 2026-03-13 12:39:46

Denial of Service 3

Time of First Successful Submission: 2026-03-13 13:09:01

Ethernet

Time of First Successful Submission: 2026-03-13 13:11:33

IP

Time of First Successful Submission: 2026-03-13 13:12:56

TCP

Time of First Successful Submission: 2026-03-13 13:14:54

TCP Handshake

Time of First Successful Submission: 2026-03-13 13:16:19

UDP

Time of First Successful Submission: 2026-03-13 13:20:04

UDP 2

Time of First Successful Submission: 2026-03-13 13:21:04

UDP Spoofing 1

Time of First Successful Submission: 2026-03-13 13:22:42

UDP Spoofing 2

Time of First Successful Submission: 2026-03-13 13:23:49

UDP Spoofing 3

Time of First Successful Submission: 2026-03-13 13:25:40

UDP Spoofing 4

Time of First Successful Submission: 2026-03-13 13:30:31

ARP

Time of First Successful Submission: 2026-03-13 13:31:49

Intercept

Time of First Successful Submission: 2026-03-13 13:33:23

Man-in-the-Middle

Time of First Successful Submission: 2026-03-13 14:31:46

XOR

Time of First Successful Submission: 2026-03-13 14:36:32

XORing Hex

Time of First Successful Submission: 2026-03-13 14:38:11

XORing ASCII

Time of First Successful Submission: 2026-03-13 14:40:14

XORing ASCII Strings

Time of First Successful Submission: 2026-03-13 14:42:34

One-time Pad

Time of First Successful Submission: 2026-03-13 14:43:49

One-time Pad Tampering

Time of First Successful Submission: 2026-03-13 15:26:42

Many-time Pad

Time of First Successful Submission: 2026-03-13 15:28:08

AES

Time of First Successful Submission: 2026-03-13 15:29:10

AES-ECB-CPA

Time of First Successful Submission: 2026-03-13 15:31:07

AES-ECB-CPA-HTTP

Time of First Successful Submission: 2026-03-13 15:35:40

AES-ECB-CPA-HTTP (base64)

Time of First Successful Submission: 2026-03-13 15:54:03

AES-ECB-CPA-Suffix

Time of First Successful Submission: 2026-03-13 15:56:45

AES-ECB-CPA-Prefix

Time of First Successful Submission: 2026-03-13 16:00:12

AES-ECB-CPA-Prefix-2

Time of First Successful Submission: 2026-03-13 16:01:41

AES-ECB-CPA-Prefix-Miniboss

Time of First Successful Submission: 2026-03-13 16:02:58

AES-ECB-CPA-Prefix-Boss

Time of First Successful Submission: 2026-03-13 16:06:49

AES-CBC

Time of First Successful Submission: 2026-03-13 16:08:40

AES-CBC Tampering

Time of First Successful Submission: 2026-03-13 16:09:57

AES-CBC Resizing

Time of First Successful Submission: 2026-03-13 16:11:00

AES-CBC-POA-Partial-Block

Time of First Successful Submission: 2026-03-13 16:15:20

AES-CBC-POA-Full-Block

Time of First Successful Submission: 2026-03-13 16:20:34

AES-CBC-POA-Multi-Block

Time of First Successful Submission: 2026-03-13 16:17:52

AES-CBC-POA-Encrypt

Time of First Successful Submission: 2026-03-13 16:23:54

AES-CBC-POA-Encrypt-2

Time of First Successful Submission: 2026-03-13 16:26:05

DHKE

Time of First Successful Submission: 2026-03-13 16:28:12

DHKE-to-AES

Time of First Successful Submission: 2026-03-13 16:32:54

RSA 1

Time of First Successful Submission: 2026-03-13 16:34:43

RSA 2

Time of First Successful Submission: 2026-03-13 16:36:17

RSA 3

Time of First Successful Submission: 2026-03-13 16:40:26

RSA 4

Time of First Successful Submission: 2026-03-13 16:42:16

RSA Signatures

Time of First Successful Submission: 2026-03-13 16:55:16

SHA 1

Time of First Successful Submission: 2026-03-13 16:47:59

SHA 2

Time of First Successful Submission: 2026-03-13 16:50:28

TLS 1

Time of First Successful Submission: 2026-03-13 16:44:51

TLS 2

Time of First Successful Submission: 2026-03-13 16:52:36

level1

Time of First Successful Submission: 2026-03-13 16:58:49

level2

Time of First Successful Submission: 2026-03-13 17:00:17

level3

Time of First Successful Submission: 2026-03-13 17:01:48

level4

Time of First Successful Submission: 2026-03-13 17:03:22

level5

Time of First Successful Submission: 2026-03-13 17:04:37

level6

Time of First Successful Submission: 2026-03-13 17:06:10

level7

Time of First Successful Submission: 2026-03-13 17:08:44

level8

Time of First Successful Submission: 2026-03-13 17:09:42

level9

Time of First Successful Submission: 2026-03-14 12:45:33

level10

Time of First Successful Submission: 2026-03-14 13:00:02

level11

Time of First Successful Submission: 2026-03-14 13:00:17

level12

Time of First Successful Submission: 2026-03-14 13:00:32

level13

Time of First Successful Submission: 2026-03-14 13:00:47

level14

Time of First Successful Submission: 2026-03-14 12:56:10

level15

Time of First Successful Submission: 2026-03-14 12:56:32

level16

Time of First Successful Submission: 2026-03-14 12:56:48

level17

Time of First Successful Submission: 2026-03-14 12:58:02

level18

Time of First Successful Submission: 2026-03-14 12:57:20

level19

Time of First Successful Submission: 2026-03-14 12:57:35

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-14 13:04:27

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-14 13:07:35

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-14 13:08:20

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-14 13:08:58

Reading Endianness (C)

Time of First Successful Submission: 2026-03-14 13:09:41

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-14 13:10:17

Version Information (Python)

Time of First Successful Submission: 2026-03-14 13:10:57

Version Information (C)

Time of First Successful Submission: 2026-03-14 13:11:26

Version Information (x86)

Time of First Successful Submission: 2026-03-14 13:12:02

Metadata and Data (Python)

Time of First Successful Submission: 2026-03-14 13:12:38

Metadata and Data (C)

Time of First Successful Submission: 2026-03-14 13:13:11

Metadata and Data (x86)

Time of First Successful Submission: 2026-03-14 13:13:48

Input Restrictions (Python)

Time of First Successful Submission: 2026-03-14 13:14:22

Input Restrictions (C)

Time of First Successful Submission: 2026-03-14 13:14:53

Input Restrictions (x86)

Time of First Successful Submission: 2026-03-14 13:15:35

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-03-14 13:16:14

Behold the cIMG! (C)

Time of First Successful Submission: 2026-03-14 13:16:52

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-03-14 13:17:29

A Basic cIMG (Python)

Time of First Successful Submission: 2026-03-14 13:18:11

A Basic cIMG (C)

Time of First Successful Submission: 2026-03-14 13:18:46

A Basic cIMG (x86)

Time of First Successful Submission: 2026-03-14 13:19:26

Internal State Mini (C)

Time of First Successful Submission: 2026-03-14 13:20:06

Internal State Mini (x86)

Time of First Successful Submission: 2026-03-14 13:21:00

Internal State (C)

Time of First Successful Submission: 2026-03-14 13:22:54

Internal State (x86)

Time of First Successful Submission: 2026-03-14 13:24:11

File Formats: Directives (C)

Time of First Successful Submission: 2026-03-14 13:25:09

File Formats: Directives (x86)

Time of First Successful Submission: 2026-03-14 13:32:09

The Patch Directive

Time of First Successful Submission: 2026-03-14 13:37:26

Optimizing for Space

Time of First Successful Submission: 2026-03-14 13:45:03

Tweaking Images

Time of First Successful Submission: 2026-03-14 13:50:20

Storage and Retrieval

Time of First Successful Submission: 2026-03-14 13:57:13

Extracting Knowledge

Time of First Successful Submission: 2026-03-14 14:01:52

Advanced Sprites

Time of First Successful Submission: 2026-03-14 14:04:51

Accessing Resources

Time of First Successful Submission: 2026-03-14 14:06:53

Unsafe Animations

Time of First Successful Submission: 2026-03-14 14:10:22

Animations

Time of First Successful Submission: 2026-03-14 14:28:34

Interoperability: Patching Data

Time of First Successful Submission: 2026-03-14 15:03:09

Patching Code

Time of First Successful Submission: 2026-03-14 15:07:52

Patching Control Flow

Time of First Successful Submission: 2026-03-14 15:11:14

Your First Overflow (easy)

Time of First Successful Submission: 2026-03-15 02:46:35

Your First Overflow (hard)

Time of First Successful Submission: 2026-03-15 02:51:25

Precision (easy)

Time of First Successful Submission: 2026-03-15 02:52:19

Precision (hard)

Time of First Successful Submission: 2026-03-15 02:53:16

Variable Control (easy)

Time of First Successful Submission: 2026-03-15 02:54:01

Variable Control (hard)

Time of First Successful Submission: 2026-03-15 02:55:02

Control Hijack (easy)

Time of First Successful Submission: 2026-03-15 02:56:05

Control Hijack (hard)

Time of First Successful Submission: 2026-03-15 02:56:56

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-03-15 02:57:51

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-03-15 02:58:36

PIEs (easy)

Time of First Successful Submission: 2026-03-15 03:00:27

PIEs (hard)

Time of First Successful Submission: 2026-03-15 03:01:43

String Lengths (easy)

Time of First Successful Submission: 2026-03-15 03:02:58

String Lengths (hard)

Time of First Successful Submission: 2026-03-15 03:03:56

Basic Shellcode

Time of First Successful Submission: 2026-03-15 03:05:07

NOP Sleds

Time of First Successful Submission: 2026-03-15 03:06:01

NULL-Free Shellcode

Time of First Successful Submission: 2026-03-15 03:07:57

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2026-03-15 03:09:19

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2026-03-15 03:10:16

Hijack to Shellcode (easy)

Time of First Successful Submission: 2026-03-15 03:12:04

Hijack to Shellcode (hard)

Time of First Successful Submission: 2026-03-15 03:14:04

ECB-to-Win (easy)

Time of First Successful Submission: 2026-03-15 03:16:13

ECB-to-Win (hard)

Time of First Successful Submission: 2026-03-15 03:17:18

ECB-to-Shellcode (easy)

Time of First Successful Submission: 2026-03-15 03:19:20

ECB-to-Shellcode (hard)

Time of First Successful Submission: 2026-03-15 03:37:24

CIMG Screenshots

Time of First Successful Submission: 2026-03-15 03:52:38

CIMG Screenshots 2

Time of First Successful Submission: 2026-03-15 05:47:45

Wily Webserver

Time of First Successful Submission: 2026-03-15 05:50:59

The Watering Hole

Time of First Successful Submission: 2026-03-15 06:19:45

Secure Chat 1

Time of First Successful Submission: 2026-03-15 06:33:35

Secure Chat 2

Time of First Successful Submission: 2026-03-15 08:07:15

Secure Chat 3

Time of First Successful Submission: 2026-03-15 12:38:10

Secure Chat 4

Time of First Successful Submission: 2026-03-15 12:42:16

Secure Chat 5

Time of First Successful Submission: 2026-03-15 12:50:26

Program Security

159 / 162 103 / 9632

ello ackers!

Time of First Successful Submission: 2026-03-15 12:59:24

Syscall Smuggler

Time of First Successful Submission: 2026-03-15 13:10:25

Syscall Shenanigans

Time of First Successful Submission: 2026-03-15 13:11:36

Byte Budget

Time of First Successful Submission: 2026-03-15 13:06:32

ClobberCode

Time of First Successful Submission: 2026-03-15 14:41:13

Diverse Delivery

Time of First Successful Submission: 2026-03-15 13:09:21

Pocket Payload

Time of First Successful Submission: 2026-03-15 13:07:24

Micro Menace

Time of First Successful Submission: 2026-03-15 13:08:35

Login Leakage (Easy)

Time of First Successful Submission: 2026-03-17 09:00:33

Login Leakage (Hard)

Time of First Successful Submission: 2026-03-17 09:02:48

Bounds Breaker (Easy)

Time of First Successful Submission: 2026-03-19 10:21:09

Bounds Breaker (Hard)

Time of First Successful Submission: 2026-03-19 10:23:11

Casting Catastrophe (Easy)

Time of First Successful Submission: 2026-03-19 11:32:10

Casting Catastrophe (Hard)

Time of First Successful Submission: 2026-03-19 11:33:46

Pointer Problems (Easy)

Time of First Successful Submission: 2026-03-20 02:38:06

Pointer Problems (Hard)

Time of First Successful Submission: 2026-03-20 02:42:03

Anomalous Array (Easy)

Time of First Successful Submission: 2026-03-19 11:20:32

Anomalous Array (Hard)

Time of First Successful Submission: 2026-03-19 11:24:16

Now you got it (Easy)

Time of First Successful Submission: 2026-03-17 09:38:43

Now you got it (Hard)

Time of First Successful Submission: 2026-03-17 09:41:25

Loop Lunacy (Easy)

Time of First Successful Submission: 2026-03-17 09:45:06

Loop Lunacy (Hard)

Time of First Successful Submission: 2026-03-17 09:46:30

Nosy Neighbor (Easy)

Time of First Successful Submission: 2026-03-17 09:29:59

Nosy Neighbor (Hard)

Time of First Successful Submission: 2026-03-17 09:31:06

Recursive Ruin (Easy)

Time of First Successful Submission: 2026-03-17 09:49:02

Recursive Ruin (Hard)

Time of First Successful Submission: 2026-03-17 09:55:23

Lingering Leftover (Easy)

Time of First Successful Submission: 2026-03-19 10:14:20

Lingering Leftover (Hard)

Time of First Successful Submission: 2026-03-20 03:16:45

Latent Leak (Easy)

Time of First Successful Submission: 2026-03-17 09:07:15

Latent Leak (Hard)

Time of First Successful Submission: 2026-03-17 09:22:12

Fork Foolery (Easy)

Time of First Successful Submission: 2026-03-17 10:02:50

Fork Foolery (Hard)

Time of First Successful Submission: 2026-03-17 10:04:57

Canary Conundrum (Easy)

Time of First Successful Submission: 2026-03-17 16:49:12

Canary Conundrum (Hard)

Time of First Successful Submission: 2026-03-17 16:50:00

A Crafty Clobber (Easy)

Time of First Successful Submission: 2026-03-20 02:51:49

A Crafty Clobber (Hard)

Time of First Successful Submission: 2026-03-20 02:53:32

Can It Fizz?

Time of First Successful Submission: 2026-03-19 11:52:55

Does It Buzz?

Time of First Successful Submission: 2026-03-19 11:55:52

Make It FizzBuzz

Time of First Successful Submission: 2026-03-20 03:31:12

Terrible Token (Easy)

Time of First Successful Submission: 2026-03-19 13:20:39

Terrible Token (Hard)

Time of First Successful Submission: 2026-03-19 13:27:18

Tangled Ticket (Easy)

Time of First Successful Submission: 2026-03-19 13:28:24

Tangled Ticket (Hard)

Time of First Successful Submission: 2026-03-19 13:30:09

Bit Bender

Time of First Successful Submission: 2026-03-19 16:43:42

Substitution Sorcery

Time of First Successful Submission: 2026-03-19 16:45:17

Meager Mangler (Easy)

Time of First Successful Submission: 2026-03-19 13:39:41

Meager Mangler (Hard)

Time of First Successful Submission: 2026-03-19 13:41:07

Monstrous Mangler (Easy)

Time of First Successful Submission: 2026-03-19 13:42:28

Monstrous Mangler (Hard)

Time of First Successful Submission: 2026-03-19 13:44:11

Patched Up (Easy)

Time of First Successful Submission: 2026-03-19 13:46:10

Patched Up (Hard)

Time of First Successful Submission: 2026-03-19 13:47:35

Puzzle Patch (Easy)

Time of First Successful Submission: 2026-03-19 13:49:14

Puzzle Patch (Hard)

Time of First Successful Submission: 2026-03-19 13:50:19

Patch Perfect (Easy)

Time of First Successful Submission: 2026-03-19 13:51:47

Patch Perfect (Hard)

Time of First Successful Submission: 2026-03-19 13:52:40

Trust the Yancode (Easy)

Time of First Successful Submission: 2026-03-19 13:53:57

Trust the Yancode (Hard)

Time of First Successful Submission: 2026-03-19 13:55:45

Know the Yancode (Easy)

Time of First Successful Submission: 2026-03-19 13:56:41

Know the Yancode (Hard)

Time of First Successful Submission: 2026-03-19 14:09:43

Master the Yancode (Easy)

Time of First Successful Submission: 2026-03-19 14:10:46

Master the Yancode (Hard)

Time of First Successful Submission: 2026-03-19 14:18:53

Transcend the Yancode (Easy)

Time of First Successful Submission: 2026-03-19 14:22:37

Transcend the Yancode (Hard)

Time of First Successful Submission: 2026-03-19 14:23:26

The Yanalyzer (Easy)

Time of First Successful Submission: 2026-03-19 14:32:30

The Yanalyzer (Hard)

Time of First Successful Submission: 2026-03-19 14:34:56

The Yangler (Easy)

Time of First Successful Submission: 2026-03-19 14:36:45

The Yangler (Hard)

Time of First Successful Submission: 2026-03-19 14:38:01

Yancraft (Easy)

Time of First Successful Submission: 2026-03-19 15:44:33

Yancraft (Hard)

Time of First Successful Submission: 2026-03-19 15:53:06

Yansanity (Easy)

Time of First Successful Submission: 2026-03-19 16:05:37

Yansanity (Hard)

Time of First Successful Submission: 2026-03-19 16:24:50

When the Cow Says Moo

Time of First Successful Submission: 2026-03-15 23:55:13

Predictable Migration

Time of First Successful Submission: 2026-03-15 23:59:58

Hashing Heifers

Time of First Successful Submission: 2026-03-16 00:02:04

Salty Stampede

Time of First Successful Submission: 2026-03-16 00:05:37

Loose Link (Easy)

Time of First Successful Submission: 2026-03-16 00:06:31

Loose Link (Hard)

Time of First Successful Submission: 2026-03-16 00:07:33

Call Chain (Easy)

Time of First Successful Submission: 2026-03-16 00:08:17

Call Chain (Hard)

Time of First Successful Submission: 2026-03-16 00:09:02

Chain of Command (Easy)

Time of First Successful Submission: 2026-03-16 00:09:49

Chain of Command (Hard)

Time of First Successful Submission: 2026-03-16 00:10:33

Stop, Pop, and ROP (Easy)

Time of First Successful Submission: 2026-03-16 00:12:46

Stop, Pop, and ROP (Hard)

Time of First Successful Submission: 2026-03-16 00:14:04

Stop, Pop and ROP II (Easy)

Time of First Successful Submission: 2026-03-16 00:15:32

Stop, Pop, and ROP II (Hard)

Time of First Successful Submission: 2026-03-16 00:16:41

Indirect Invocation (Easy)

Time of First Successful Submission: 2026-03-16 00:18:44

Indirect Invocation (Hard)

Time of First Successful Submission: 2026-03-16 00:19:49

Leaky Libc (Easy)

Time of First Successful Submission: 2026-03-16 00:29:45

Leaky Libc (Hard)

Time of First Successful Submission: 2026-03-16 00:31:17

Putsception (Easy)

Time of First Successful Submission: 2026-03-16 00:33:16

Putsception (Hard)

Time of First Successful Submission: 2026-03-16 00:34:51

Pivotal Prelude (Easy)

Time of First Successful Submission: 2026-03-16 00:50:31

Pivotal Prelude (Hard)

Time of First Successful Submission: 2026-03-16 00:52:07

Pivotal Pointer (Easy)

Time of First Successful Submission: 2026-03-16 00:54:07

Pivotal Pointer (Hard)

Time of First Successful Submission: 2026-03-16 00:56:37

Pivotal Payload (Easy)

Time of First Successful Submission: 2026-03-16 00:57:22

Pivotal Payload (Hard)

Time of First Successful Submission: 2026-03-16 01:02:21

Pivotal Pursuit (Easy)

Time of First Successful Submission: 2026-03-16 01:09:50

Pivotal Pursuit (Hard)

Time of First Successful Submission: 2026-03-16 04:30:23

Guarded Gadgets (Easy)

Time of First Successful Submission: 2026-03-16 04:46:32

Guarded Gadgets (Hard)

Time of First Successful Submission: 2026-03-16 04:53:41

ROP Roulette (Easy)

Time of First Successful Submission: 2026-03-20 04:17:40

ROP Roulette (Hard)

Time of First Successful Submission: 2026-03-20 04:15:34

Libc Lottery (Easy)

Time of First Successful Submission: 2026-03-20 04:57:57

Libc Lottery (Hard)

Time of First Successful Submission: 2026-03-20 05:17:59

Freebie (Easy)

Time of First Successful Submission: 2026-03-20 05:36:41

Freebie (Hard)

Time of First Successful Submission: 2026-03-20 08:11:57

Freebin Feint (Easy)

Time of First Successful Submission: 2026-03-20 05:38:42

Freebin Feint (Hard)

Time of First Successful Submission: 2026-03-20 05:39:59

Free Flag Fumble (Easy)

Time of First Successful Submission: 2026-03-20 05:41:37

Free Flag Fumble (Hard)

Time of First Successful Submission: 2026-03-20 05:42:29

Fickle Free (Easy)

Time of First Successful Submission: 2026-03-20 05:43:40

Fickle Free (Hard)

Time of First Successful Submission: 2026-03-20 05:44:39

Malloc Mirage (Easy)

Time of First Successful Submission: 2026-03-20 05:46:08

Malloc Mirage (Hard)

Time of First Successful Submission: 2026-03-20 05:53:44

Seeking Secrets (Easy)

Time of First Successful Submission: 2026-03-20 05:55:17

Seeking Secrets (Hard)

Time of First Successful Submission: 2026-03-20 05:59:28

Seeking Substantial Secrets (Easy)

Time of First Successful Submission: 2026-03-20 06:06:08

Seeking Substantial Secrets (Hard)

Time of First Successful Submission: 2026-03-20 06:07:23

Seeking Spanless Secrets (Easy)

Time of First Successful Submission: 2026-03-20 06:19:55

Seeking Spanless Secrets (Hard)

Time of First Successful Submission: 2026-03-20 06:23:29

Seeking Smuggled Secrets (Easy)

Time of First Successful Submission: 2026-03-20 06:26:21

Seeking Smuggled Secrets (Hard)

Time of First Successful Submission: 2026-03-20 06:32:10

Sus Sequence (Easy)

Time of First Successful Submission: 2026-03-20 06:39:28

Sus Sequence (Hard)

Time of First Successful Submission: 2026-03-20 06:47:26

Echo Emanations (Easy)

Time of First Successful Submission: 2026-03-20 06:51:52

Echo Emanations (Hard)

Time of First Successful Submission: 2026-03-20 06:53:52

Stack Spoofing (Easy)

Time of First Successful Submission: 2026-03-20 07:13:23

Stack Spoofing (Hard)

Time of First Successful Submission: 2026-03-20 07:14:35

Stack Summoning (Easy)

Time of First Successful Submission: 2026-03-20 06:55:27

Stack Summoning (Hard)

Time of First Successful Submission: 2026-03-20 06:55:49

Enterprising Echo (Easy)

Time of First Successful Submission: 2026-03-20 06:56:15

Enterprising Echo (Hard)

Time of First Successful Submission: 2026-03-20 06:56:37

Ephemeral Echo (Easy)

Time of First Successful Submission: 2026-03-20 07:02:35

Ephemeral Echo (Hard)

Time of First Successful Submission: 2026-03-20 06:57:07

Seeking Safe Secrets (Easy)

Time of First Successful Submission: 2026-03-20 07:17:00

Seeking Safe Secrets (Hard)

Time of First Successful Submission: 2026-03-20 07:20:12

Sus Sequence Safety (Easy)

Time of First Successful Submission: 2026-03-20 07:04:55

Sus Sequence Safety (Hard)

Time of First Successful Submission: 2026-03-20 07:22:14

Safely Stack Summoning (Easy)

Time of First Successful Submission: 2026-03-20 07:24:15

Safely Stack Summoning (Hard)

Time of First Successful Submission: 2026-03-20 07:26:25

Overlapping Odyssey (Easy)

Time of First Successful Submission: 2026-03-19 17:00:17

Overlapping Odyssey (Hard)

Time of First Successful Submission: 2026-03-19 17:01:15

Tcache Terror (Easy)

Time of First Successful Submission: 2026-03-19 16:56:43

Tcache Terror (Hard)

Time of First Successful Submission: 2026-03-19 16:57:19

Containment Composition (Easy)

Time of First Successful Submission: 2026-03-21 06:25:25

Containment Composition (Hard)

Time of First Successful Submission: 2026-03-21 09:54:35

Constant Corruption (Easy)

Time of First Successful Submission: 2026-03-21 09:35:51

Constant Corruption (Hard)

Time of First Successful Submission: 2026-03-21 10:04:50

Return to YanLand (Easy)

Time of First Successful Submission: 2026-03-22 04:29:20

Return to YanLand (Hard)

Time of First Successful Submission: 2026-03-21 10:40:44

Escape from YanLand (Easy)

Time of First Successful Submission: 2026-03-21 11:16:21

Escape from YanLand (Hard)

Time of First Successful Submission: 2026-03-21 11:20:15

The YanFilter (Easy)

Time of First Successful Submission: 2026-03-22 04:59:06

The YanFilter (Hard)

Time of First Successful Submission: 2026-03-21 13:26:51

The Great YanFilter (Easy)

Time of First Successful Submission: 2026-03-21 13:32:49

The Great YanFilter (Hard)

Time of First Successful Submission: 2026-03-21 13:44:27

Yan85 Reborn (Easy)

Time of First Successful Submission: 2026-03-21 14:16:10

Yan85 Reborn (Hard)

Time of First Successful Submission: 2026-03-22 04:53:59

System Security

87 / 95 178 / 3337

chroot-escape-basic

Time of First Successful Submission: 2026-02-25 22:30:30

chroot-shellcode

Time of First Successful Submission: 2026-02-25 23:24:26

chroot-proper

Time of First Successful Submission: 2026-02-25 23:28:49

seccomp-basic

Time of First Successful Submission: 2026-02-25 23:58:52

seccomp-linkat

Time of First Successful Submission: 2026-02-26 00:02:53

seccomp-fchdir

Time of First Successful Submission: 2026-02-26 00:10:35

seccomp-rechroot

Time of First Successful Submission: 2026-02-26 00:29:17

seccomp-only

Time of First Successful Submission: 2026-02-26 00:41:25

seccomp-arch32

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

seccomp-minimal

Time of First Successful Submission: 2026-02-26 02:11:34

seccomp-timebased

Time of First Successful Submission: 2026-02-26 02:21:38

seccomp-readonly

Time of First Successful Submission: 2026-02-27 01:21:01

process-isolation

Time of First Successful Submission: 2026-02-28 00:42:07

mount-namespace

Time of First Successful Submission: 2026-02-28 00:53:19

mount-cleanup

Time of First Successful Submission: 2026-02-28 02:55:56

mount-readonly

Time of First Successful Submission: 2026-02-28 02:58:14

mount-shellcode

Time of First Successful Submission: 2026-02-28 03:04:54

mount-bindmount

Time of First Successful Submission: 2026-03-01 01:07:26

level1.0

Time of First Successful Submission: 2026-03-02 12:00:22

level1.1

Time of First Successful Submission: 2026-03-02 12:34:14

level2.0

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

level2.1

Time of First Successful Submission: 2026-03-03 04:06:11

level3.0

Time of First Successful Submission: 2026-03-04 12:58:08

level3.1

Time of First Successful Submission: 2026-03-04 13:00:14

level4.0

Time of First Successful Submission: 2026-03-04 13:14:05

level4.1

Time of First Successful Submission: 2026-03-04 13:16:38

level5.0

Time of First Successful Submission: 2026-03-05 13:00:41

level5.1

Time of First Successful Submission: 2026-03-05 13:14:52

level6.0

Time of First Successful Submission: 2026-03-05 14:30:51

level6.1

Time of First Successful Submission: 2026-03-05 14:49:53

level7.0

Time of First Successful Submission: 2026-03-06 03:09:44

level7.1

Time of First Successful Submission: 2026-03-06 03:16:52

level8.0

Time of First Successful Submission: 2026-03-06 03:30:22

level8.1

Time of First Successful Submission: 2026-03-06 03:48:46

level9.0

Time of First Successful Submission: 2026-03-07 04:55:19

level9.1

Time of First Successful Submission: 2026-03-07 05:36:51

level10.0

Time of First Successful Submission: 2026-03-07 06:05:05

level10.1

Time of First Successful Submission: 2026-03-07 06:10:57

level11.0

Time of First Successful Submission: 2026-03-07 06:18:23

level11.1

Time of First Successful Submission: 2026-03-07 06:23:01

level1.0

Time of First Successful Submission: 2026-02-19 23:04:56

level1.1

Time of First Successful Submission: 2026-02-19 23:11:09

level2.0

Time of First Successful Submission: 2026-02-21 00:46:27

level2.1

Time of First Successful Submission: 2026-02-21 00:48:43

level3.0

Time of First Successful Submission: 2026-02-21 01:04:54

level3.1

Time of First Successful Submission: 2026-02-21 01:16:19

level4.0

Time of First Successful Submission: 2026-02-21 01:33:59

level4.1

Time of First Successful Submission: 2026-02-21 01:40:27

level5.0

Time of First Successful Submission: 2026-02-21 02:53:09

level5.1

Time of First Successful Submission: 2026-02-21 02:55:11

level6.0

Time of First Successful Submission: 2026-02-22 00:12:32

level6.1

Time of First Successful Submission: 2026-02-22 00:15:30

level7.0

Time of First Successful Submission: 2026-02-22 01:14:24

level7.1

Time of First Successful Submission: 2026-02-22 01:18:36

level8.0

Time of First Successful Submission: 2026-02-22 02:56:47

level8.1

Time of First Successful Submission: 2026-02-22 02:58:35

level9.0

Time of First Successful Submission: 2026-02-23 23:12:54

level9.1

Time of First Successful Submission: 2026-02-23 23:17:40

level10.0

Time of First Successful Submission: 2026-02-24 00:16:02

level10.1

Time of First Successful Submission: 2026-02-24 00:16:41

level11.0

Time of First Successful Submission: 2026-02-24 01:17:00

level11.1

Time of First Successful Submission: 2026-02-24 01:19:47

level12.0

Time of First Successful Submission: 2026-02-25 06:11:14

level12.1

Time of First Successful Submission: 2026-02-25 06:12:22

Baby Spectre 1

Time of First Successful Submission: 2026-03-07 07:46:57

Baby Spectre 2

Time of First Successful Submission: 2026-03-08 03:20:14

Baby Spectre 3

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

Baby Spectre 4

Time of First Successful Submission: 2026-03-08 03:34:37

Baby Spectre 5

Time of First Successful Submission: 2026-03-08 05:18:37

Prefetch Peek

Time of First Successful Submission: 2026-03-09 12:08:35

Spooky Spectre 1

Time of First Successful Submission: 2026-03-22 07:08:22

Spooky Spectre 2

Time of First Successful Submission: 2026-03-25 05:44:46

Yan85 Reloaded

Time of First Successful Submission: 2026-03-25 07:01:39

Molten Access

Time of First Successful Submission: 2026-04-06 13:23:44

Molten Walk

Time of First Successful Submission: 2026-04-06 14:41:39

level1.0

Time of First Successful Submission: 2026-03-25 10:03:42

level1.1

Time of First Successful Submission: 2026-03-25 10:15:04

level2.0

Time of First Successful Submission: 2026-03-25 10:35:55

level2.1

Time of First Successful Submission: 2026-03-25 14:13:33

level3.0

Time of First Successful Submission: 2026-03-25 15:41:54

level3.1

Time of First Successful Submission: 2026-03-27 06:08:19

level4.0

Time of First Successful Submission: 2026-03-27 06:52:08

level4.1

Time of First Successful Submission: 2026-03-27 08:33:28

level5.0

Time of First Successful Submission: 2026-03-27 10:24:04

level5.1

Time of First Successful Submission: 2026-03-27 11:55:48

level6.0

Time of First Successful Submission: 2026-03-27 12:24:17

level6.1

Time of First Successful Submission: 2026-03-27 12:32:42

Software Exploitation

24 / 90 482 / 2150

Level1.0

Time of First Successful Submission: 2026-04-08 05:00:08

Level1.1

Time of First Successful Submission: 2026-04-08 05:04:55

Level2.0

Time of First Successful Submission: 2026-04-08 05:07:38

Level2.1

Time of First Successful Submission: 2026-04-08 05:09:11

Level3.0

Time of First Successful Submission: 2026-04-08 05:14:10

Level3.1

Time of First Successful Submission: 2026-04-08 05:18:27

Level4.0

Time of First Successful Submission: 2026-04-08 05:21:12

Level4.1

Time of First Successful Submission: 2026-04-08 05:27:05

Level5.0

Time of First Successful Submission: 2026-04-08 05:34:51

Level5.1

Time of First Successful Submission: 2026-04-08 05:37:31

Level6.0

Time of First Successful Submission: 2026-04-08 05:45:45

Level6.1

Time of First Successful Submission: 2026-04-08 05:49:44

Level7.0

Time of First Successful Submission: 2026-04-09 05:09:56

Level7.1

Time of First Successful Submission: 2026-04-09 05:20:37

Level8.0

Time of First Successful Submission: 2026-04-09 05:50:57

Level8.1

Time of First Successful Submission: 2026-04-09 05:59:41

Level9.0

Time of First Successful Submission: 2026-04-09 06:12:27

Level9.1

Time of First Successful Submission: 2026-04-09 06:14:31

Level10.0

Time of First Successful Submission: 2026-04-09 09:02:05

Level10.1

Time of First Successful Submission: 2026-04-09 09:16:13

Level11.0

Time of First Successful Submission: 2026-04-09 09:52:13

Level11.1

Time of First Successful Submission: 2026-04-09 09:57:44

Level12.0

Time of First Successful Submission: 2026-04-09 10:39:14

Level12.1

Time of First Successful Submission: 2026-04-09 10:51:50

Start Here

11 / 12 8638 / 43723

Using the Terminal

Time of First Successful Submission: 2026-03-10 14:01:32

Using the VSCode Workspace

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

Using the GUI Desktop

Time of First Successful Submission: 2026-03-13 07:28:21

Pasting into the Desktop

Time of First Successful Submission: 2026-03-16 07:58:35

Restarting Challenges

Time of First Successful Submission: 2026-03-16 08:00:17

Challenge Programs

Time of First Successful Submission: 2026-03-16 08:00:38

The Flag File

Time of First Successful Submission: 2026-03-16 08:01:06

Using Privileged Mode

Time of First Successful Submission: 2026-03-16 08:03:04

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-16 08:03:43

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-16 08:04:00

Linux Luminarium

24 / 128 20225 / 32730

Intro to Commands

Time of First Successful Submission: 2026-03-23 12:06:11

Intro to Arguments

Time of First Successful Submission: 2026-03-23 12:07:19

Command History

Time of First Successful Submission: 2026-03-23 12:07:00

The Root

Time of First Successful Submission: 2026-03-26 05:52:58

Program and absolute paths

Time of First Successful Submission: 2026-03-24 00:00:32

Position thy self

Time of First Successful Submission: 2026-03-26 05:53:41

Position elsewhere

Time of First Successful Submission: 2026-03-26 05:54:44

implicit relative paths, from /

Time of First Successful Submission: 2026-03-27 03:09:58

explicit relative paths, from /

Time of First Successful Submission: 2026-03-28 10:38:54

implicit relative path

Time of First Successful Submission: 2026-03-28 10:39:28

home sweet home

Time of First Successful Submission: 2026-03-28 10:40:49

cat: not the pet, but the command!

Time of First Successful Submission: 2026-03-31 05:25:23

catting absolute paths

Time of First Successful Submission: 2026-03-31 05:30:32

more catting practice

Time of First Successful Submission: 2026-03-31 05:35:22

grepping for a needle in a haystack

Time of First Successful Submission: 2026-03-31 17:45:43

comparing files

Time of First Successful Submission: 2026-04-01 16:27:14

listing files

Time of First Successful Submission: 2026-04-01 16:27:53

touching files

Time of First Successful Submission: 2026-04-03 03:44:59

removing files

Time of First Successful Submission: 2026-04-04 13:52:09

moving files

Time of First Successful Submission: 2026-04-05 03:47:58

copying files

Time of First Successful Submission: 2026-04-06 13:10:23

Printing Variables

Time of First Successful Submission: 2026-03-29 11:40:50

Setting Variables

Time of First Successful Submission: 2026-03-30 00:55:26

Multi-word Variables

Time of First Successful Submission: 2026-04-07 14:04:00

Playing With Programs

10 / 116 17987 / 23465

What's the password?

Time of First Successful Submission: 2026-04-07 14:11:42

... and again!

Time of First Successful Submission: 2026-04-10 12:58:59

Newline Troubles

Time of First Successful Submission: 2026-04-10 13:08:11

Reasoning about files

Time of First Successful Submission: 2026-04-10 13:08:30

Specifying Filenames

Time of First Successful Submission: 2026-04-10 13:08:50

Binary and Hex Encoding

Time of First Successful Submission: 2026-04-10 13:09:09

More Hex

Time of First Successful Submission: 2026-04-10 13:09:28

Decoding Hex

Time of First Successful Submission: 2026-04-10 13:09:47

Decoding Practice

Time of First Successful Submission: 2026-04-10 13:10:07

Encoding Practice

Time of First Successful Submission: 2026-04-10 13:10:30

GCA CTF

11 / 104 8777 / 44002

Using the Terminal

Time of First Successful Submission: 2026-03-10 14:01:32

Using the VSCode Workspace

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

Using the GUI Desktop

Time of First Successful Submission: 2026-03-13 07:28:21

Pasting into the Desktop

Time of First Successful Submission: 2026-03-16 07:58:35

Connecting over SSH

Time of First Successful Submission: 2026-03-11 13:34:43

Restarting Challenges

Time of First Successful Submission: 2026-03-16 08:00:17

Challenge Programs

Time of First Successful Submission: 2026-03-16 08:00:38

The Flag File

Time of First Successful Submission: 2026-03-16 08:01:06

Using Privileged Mode

Time of First Successful Submission: 2026-03-16 08:03:04

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-16 08:03:43

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-16 08:04:00