refmk

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CTF Archive

1 / 834 1056 / 1061


MISC - 459 - File Reader

Time of First Successful Submission: 2026-10-07 15:21:27


Intro to Programming Languages

15 / 253 16953 / 52967


Commands

Time of First Successful Submission: 2026-10-07 12:29:06

Command Arguments

Time of First Successful Submission: 2026-10-07 12:29:30

Command History

Time of First Successful Submission: 2026-10-07 12:29:50

The Root Path

Time of First Successful Submission: 2026-10-07 12:30:23

Absolute Paths

Time of First Successful Submission: 2026-10-07 12:30:48

Changing position

Time of First Successful Submission: 2026-10-07 12:31:25

Changing to an Absolute Path

Time of First Successful Submission: 2026-10-07 12:32:11

Relative Paths

Time of First Successful Submission: 2026-10-07 12:32:45

Cat

Time of First Successful Submission: 2026-10-07 12:37:43

Ls

Time of First Successful Submission: 2026-10-07 12:40:16

Ls All

Time of First Successful Submission: 2026-10-07 12:42:31

Find

Time of First Successful Submission: 2026-10-07 12:47:25

Piping Echo

Time of First Successful Submission: 2026-10-07 13:10:50

Piping Stdout

Time of First Successful Submission: 2026-10-07 13:11:21

Piping Stdin

Time of First Successful Submission: 2026-10-07 13:13:44


Intro to Cybersecurity

183 / 183 119 / 25931


Path Traversal 1

Time of First Successful Submission: 2025-11-26 12:09:33

Path Traversal 2

Time of First Successful Submission: 2025-11-26 12:14:42

CMDi 1

Time of First Successful Submission: 2025-11-26 12:20:06

CMDi 2

Time of First Successful Submission: 2025-11-26 12:22:52

CMDi 3

Time of First Successful Submission: 2025-11-26 12:26:17

CMDi 4

Time of First Successful Submission: 2025-11-26 12:28:26

CMDi 5

Time of First Successful Submission: 2025-11-26 12:30:27

CMDi 6

Time of First Successful Submission: 2025-11-26 12:42:15

Authentication Bypass 1

Time of First Successful Submission: 2025-11-26 12:50:07

Authentication Bypass 2

Time of First Successful Submission: 2025-11-26 12:52:00

SQLi 1

Time of First Successful Submission: 2025-11-26 12:55:30

SQLi 2

Time of First Successful Submission: 2025-11-26 12:57:16

SQLi 3

Time of First Successful Submission: 2025-11-26 12:59:17

SQLi 4

Time of First Successful Submission: 2025-11-26 13:02:28

SQLi 5

Time of First Successful Submission: 2025-11-26 13:21:01

XSS 1

Time of First Successful Submission: 2025-11-26 13:25:50

XSS 2

Time of First Successful Submission: 2025-11-26 13:28:08

XSS 3

Time of First Successful Submission: 2025-11-26 13:31:08

XSS 4

Time of First Successful Submission: 2025-11-26 13:33:14

XSS 5

Time of First Successful Submission: 2025-11-26 13:43:08

XSS 6

Time of First Successful Submission: 2025-11-26 13:46:13

XSS 7

Time of First Successful Submission: 2025-11-26 13:51:53

CSRF 1

Time of First Successful Submission: 2025-11-26 14:22:56

CSRF 2

Time of First Successful Submission: 2025-11-26 14:27:39

CSRF 3

Time of First Successful Submission: 2025-11-26 14:36:09

CSRF 4

Time of First Successful Submission: 2025-11-26 14:43:33

CSRF 5

Time of First Successful Submission: 2025-11-26 14:56:50

Connect

Time of First Successful Submission: 2025-11-26 15:04:14

Send

Time of First Successful Submission: 2025-11-26 15:05:27

Shutdown

Time of First Successful Submission: 2025-11-26 15:08:12

Listen

Time of First Successful Submission: 2025-11-26 15:09:57

Scan 1

Time of First Successful Submission: 2025-11-26 15:13:35

Scan 2

Time of First Successful Submission: 2025-11-26 15:46:49

Monitor 1

Time of First Successful Submission: 2025-11-26 15:48:53

Monitor 2

Time of First Successful Submission: 2025-11-26 15:52:31

Sniffing Cookies

Time of First Successful Submission: 2025-11-26 15:55:25

Network Configuration

Time of First Successful Submission: 2025-11-26 15:59:17

Firewall 1

Time of First Successful Submission: 2025-11-26 16:01:02

Firewall 2

Time of First Successful Submission: 2025-11-26 16:02:44

Firewall 3

Time of First Successful Submission: 2025-11-26 16:03:54

Denial of Service 1

Time of First Successful Submission: 2025-11-26 16:04:48

Denial of Service 2

Time of First Successful Submission: 2025-11-26 16:08:17

Denial of Service 3

Time of First Successful Submission: 2025-12-03 14:30:14

Ethernet

Time of First Successful Submission: 2025-11-29 09:13:36

IP

Time of First Successful Submission: 2025-11-29 09:15:03

TCP

Time of First Successful Submission: 2025-11-29 09:16:30

TCP Handshake

Time of First Successful Submission: 2025-11-29 09:27:31

UDP

Time of First Successful Submission: 2025-12-03 10:04:02

UDP 2

Time of First Successful Submission: 2025-12-03 10:05:49

UDP Spoofing 1

Time of First Successful Submission: 2025-12-03 10:09:15

UDP Spoofing 2

Time of First Successful Submission: 2025-12-03 10:29:30

UDP Spoofing 3

Time of First Successful Submission: 2025-12-03 10:41:16

UDP Spoofing 4

Time of First Successful Submission: 2025-12-03 10:45:17

ARP

Time of First Successful Submission: 2025-12-03 10:58:46

Intercept

Time of First Successful Submission: 2025-12-03 11:16:22

Man-in-the-Middle

Time of First Successful Submission: 2025-12-03 14:25:53

XOR

Time of First Successful Submission: 2025-12-03 14:32:53

XORing Hex

Time of First Successful Submission: 2025-12-03 14:38:11

XORing ASCII

Time of First Successful Submission: 2025-12-03 14:46:38

XORing ASCII Strings

Time of First Successful Submission: 2025-12-03 14:52:00

One-time Pad

Time of First Successful Submission: 2025-12-03 15:01:25

One-time Pad Tampering

Time of First Successful Submission: 2025-12-03 15:07:30

Many-time Pad

Time of First Successful Submission: 2025-12-03 15:15:23

AES

Time of First Successful Submission: 2025-12-03 15:21:37

AES-ECB-CPA

Time of First Successful Submission: 2025-12-03 15:41:38

AES-ECB-CPA-HTTP

Time of First Successful Submission: 2025-12-03 16:02:01

AES-ECB-CPA-HTTP (base64)

Time of First Successful Submission: 2025-12-03 16:06:56

AES-ECB-CPA-Suffix

Time of First Successful Submission: 2025-12-10 08:49:17

AES-ECB-CPA-Prefix

Time of First Successful Submission: 2025-12-10 09:22:21

AES-ECB-CPA-Prefix-2

Time of First Successful Submission: 2025-12-10 09:39:20

AES-ECB-CPA-Prefix-Miniboss

Time of First Successful Submission: 2025-12-10 09:57:11

AES-ECB-CPA-Prefix-Boss

Time of First Successful Submission: 2025-12-10 10:30:40

AES-CBC

Time of First Successful Submission: 2025-12-10 10:35:20

AES-CBC Tampering

Time of First Successful Submission: 2025-12-10 10:48:53

AES-CBC Resizing

Time of First Successful Submission: 2025-12-10 10:51:23

AES-CBC-POA-Partial-Block

Time of First Successful Submission: 2025-12-10 11:58:39

AES-CBC-POA-Full-Block

Time of First Successful Submission: 2025-12-10 12:06:39

AES-CBC-POA-Multi-Block

Time of First Successful Submission: 2025-12-10 12:57:29

AES-CBC-POA-Encrypt

Time of First Successful Submission: 2025-12-10 13:37:00

AES-CBC-POA-Encrypt-2

Time of First Successful Submission: 2025-12-10 13:42:09

DHKE

Time of First Successful Submission: 2025-12-10 14:05:17

DHKE-to-AES

Time of First Successful Submission: 2025-12-10 14:08:48

RSA 1

Time of First Successful Submission: 2025-12-10 14:16:44

RSA 2

Time of First Successful Submission: 2025-12-10 14:28:46

RSA 3

Time of First Successful Submission: 2025-12-10 14:38:14

RSA 4

Time of First Successful Submission: 2025-12-10 14:44:50

RSA Signatures

Time of First Successful Submission: 2025-12-10 15:03:32

SHA 1

Time of First Successful Submission: 2025-12-10 15:26:28

SHA 2

Time of First Successful Submission: 2025-12-10 15:30:51

TLS 1

Time of First Successful Submission: 2025-12-10 15:50:48

TLS 2

Time of First Successful Submission: 2025-12-10 16:45:34

level1

Time of First Successful Submission: 2025-12-17 09:13:48

level2

Time of First Successful Submission: 2025-12-17 09:15:27

level3

Time of First Successful Submission: 2025-12-17 09:16:13

level4

Time of First Successful Submission: 2025-12-17 09:16:45

level5

Time of First Successful Submission: 2025-12-17 09:20:17

level6

Time of First Successful Submission: 2025-12-17 09:25:59

level7

Time of First Successful Submission: 2025-12-17 09:26:53

level8

Time of First Successful Submission: 2025-12-17 09:27:37

level9

Time of First Successful Submission: 2025-12-17 09:28:27

level10

Time of First Successful Submission: 2025-12-17 09:30:16

level11

Time of First Successful Submission: 2025-12-17 09:32:27

level12

Time of First Successful Submission: 2025-12-17 09:33:59

level13

Time of First Successful Submission: 2025-12-17 09:34:53

level14

Time of First Successful Submission: 2025-12-17 09:35:42

level15

Time of First Successful Submission: 2025-12-17 09:36:40

level16

Time of First Successful Submission: 2025-12-17 09:38:11

level17

Time of First Successful Submission: 2025-12-17 10:17:47

level18

Time of First Successful Submission: 2025-12-17 10:19:08

level19

Time of First Successful Submission: 2025-12-17 10:22:54

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2025-12-17 10:31:39

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2025-12-17 10:32:41

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2025-12-17 10:34:44

Reading Endianness (Python)

Time of First Successful Submission: 2025-12-17 10:36:56

Reading Endianness (C)

Time of First Successful Submission: 2025-12-17 10:38:00

Reading Endianness (x86)

Time of First Successful Submission: 2025-12-17 10:39:58

Version Information (Python)

Time of First Successful Submission: 2025-12-17 10:47:05

Version Information (C)

Time of First Successful Submission: 2025-12-17 10:54:30

Version Information (x86)

Time of First Successful Submission: 2025-12-17 10:56:24

Metadata and Data (Python)

Time of First Successful Submission: 2025-12-17 11:00:09

Metadata and Data (C)

Time of First Successful Submission: 2025-12-17 11:02:08

Metadata and Data (x86)

Time of First Successful Submission: 2025-12-17 11:05:59

Input Restrictions (Python)

Time of First Successful Submission: 2025-12-17 11:08:33

Input Restrictions (C)

Time of First Successful Submission: 2025-12-17 11:10:16

Input Restrictions (x86)

Time of First Successful Submission: 2025-12-17 11:15:03

Behold the cIMG! (Python)

Time of First Successful Submission: 2025-12-17 11:21:55

Behold the cIMG! (C)

Time of First Successful Submission: 2025-12-17 11:35:14

Behold the cIMG! (x86)

Time of First Successful Submission: 2025-12-17 11:36:36

A Basic cIMG (Python)

Time of First Successful Submission: 2025-12-17 11:46:52

A Basic cIMG (C)

Time of First Successful Submission: 2025-12-17 11:49:05

A Basic cIMG (x86)

Time of First Successful Submission: 2025-12-17 11:51:25

Internal State Mini (C)

Time of First Successful Submission: 2025-12-17 12:14:58

Internal State Mini (x86)

Time of First Successful Submission: 2025-12-17 12:18:49

Internal State (C)

Time of First Successful Submission: 2025-12-17 12:34:09

Internal State (x86)

Time of First Successful Submission: 2025-12-17 12:44:43

File Formats: Directives (C)

Time of First Successful Submission: 2025-12-17 12:54:00

File Formats: Directives (x86)

Time of First Successful Submission: 2025-12-17 12:58:00

The Patch Directive

Time of First Successful Submission: 2025-12-17 19:36:50

Optimizing for Space

Time of First Successful Submission: 2025-12-19 10:02:53

Tweaking Images

Time of First Successful Submission: 2025-12-19 10:47:31

Storage and Retrieval

Time of First Successful Submission: 2025-12-19 13:11:12

Extracting Knowledge

Time of First Successful Submission: 2025-12-19 14:31:15

Advanced Sprites

Time of First Successful Submission: 2025-12-20 09:20:11

Accessing Resources

Time of First Successful Submission: 2025-12-22 12:43:43

Unsafe Animations

Time of First Successful Submission: 2025-12-22 13:11:19

Animations

Time of First Successful Submission: 2025-12-22 14:34:49

Interoperability: Patching Data

Time of First Successful Submission: 2025-12-22 15:23:44

Patching Code

Time of First Successful Submission: 2025-12-23 08:45:13

Patching Control Flow

Time of First Successful Submission: 2025-12-23 08:58:08

Your First Overflow (easy)

Time of First Successful Submission: 2025-12-23 09:05:13

Your First Overflow (hard)

Time of First Successful Submission: 2025-12-23 09:08:53

Precision (easy)

Time of First Successful Submission: 2025-12-23 09:13:18

Precision (hard)

Time of First Successful Submission: 2025-12-23 09:28:49

Variable Control (easy)

Time of First Successful Submission: 2025-12-23 09:40:36

Variable Control (hard)

Time of First Successful Submission: 2025-12-23 09:45:52

Control Hijack (easy)

Time of First Successful Submission: 2025-12-23 09:56:57

Control Hijack (hard)

Time of First Successful Submission: 2025-12-23 10:00:30

Tricky Control Hijack (easy)

Time of First Successful Submission: 2025-12-23 10:04:33

Tricky Control Hijack (hard)

Time of First Successful Submission: 2025-12-23 10:09:34

PIEs (easy)

Time of First Successful Submission: 2025-12-23 10:20:49

PIEs (hard)

Time of First Successful Submission: 2025-12-23 10:27:22

String Lengths (easy)

Time of First Successful Submission: 2025-12-23 10:37:41

String Lengths (hard)

Time of First Successful Submission: 2025-12-23 10:45:53

Basic Shellcode

Time of First Successful Submission: 2025-12-23 11:04:41

NOP Sleds

Time of First Successful Submission: 2025-12-23 11:16:07

NULL-Free Shellcode

Time of First Successful Submission: 2025-12-23 11:25:18

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2025-12-23 11:36:47

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2025-12-23 11:41:36

Hijack to Shellcode (easy)

Time of First Successful Submission: 2025-12-23 11:49:32

Hijack to Shellcode (hard)

Time of First Successful Submission: 2025-12-23 11:51:59

ECB-to-Win (easy)

Time of First Successful Submission: 2025-12-23 13:10:46

ECB-to-Win (hard)

Time of First Successful Submission: 2025-12-23 13:14:50

ECB-to-Shellcode (easy)

Time of First Successful Submission: 2025-12-23 13:26:29

ECB-to-Shellcode (hard)

Time of First Successful Submission: 2025-12-23 13:33:44

CIMG Screenshots

Time of First Successful Submission: 2025-12-27 15:23:45

CIMG Screenshots 2

Time of First Successful Submission: 2025-12-29 13:17:46

Wily Webserver

Time of First Successful Submission: 2025-12-29 14:28:25

The Watering Hole

Time of First Successful Submission: 2025-12-30 10:08:35

Secure Chat 1

Time of First Successful Submission: 2025-12-30 12:29:33

Secure Chat 2

Time of First Successful Submission: 2025-12-30 14:24:52

Secure Chat 3

Time of First Successful Submission: 2025-12-31 01:18:17

Secure Chat 4

Time of First Successful Submission: 2026-01-03 13:23:00

Secure Chat 5

Time of First Successful Submission: 2026-01-04 18:10:32


Program Security

159 / 159 91 / 10856


ello ackers!

Time of First Successful Submission: 2026-01-07 11:19:15

Syscall Smuggler

Time of First Successful Submission: 2026-01-07 11:48:27

Syscall Shenanigans

Time of First Successful Submission: 2026-01-07 12:05:14

Byte Budget

Time of First Successful Submission: 2026-01-07 13:12:06

ClobberCode

Time of First Successful Submission: 2026-01-07 13:50:28

Diverse Delivery

Time of First Successful Submission: 2026-01-07 14:22:23

Pocket Payload

Time of First Successful Submission: 2026-01-07 14:45:04

Micro Menace

Time of First Successful Submission: 2026-01-07 17:53:03

Login Leakage (Easy)

Time of First Successful Submission: 2026-01-14 09:37:23

Login Leakage (Hard)

Time of First Successful Submission: 2026-01-14 09:50:07

Bounds Breaker (Easy)

Time of First Successful Submission: 2026-01-14 09:59:43

Bounds Breaker (Hard)

Time of First Successful Submission: 2026-01-14 10:03:30

Casting Catastrophe (Easy)

Time of First Successful Submission: 2026-01-14 10:49:45

Casting Catastrophe (Hard)

Time of First Successful Submission: 2026-01-14 10:53:23

Pointer Problems (Easy)

Time of First Successful Submission: 2026-01-14 11:36:38

Pointer Problems (Hard)

Time of First Successful Submission: 2026-01-14 11:42:25

Anomalous Array (Easy)

Time of First Successful Submission: 2026-01-14 12:16:57

Anomalous Array (Hard)

Time of First Successful Submission: 2026-01-14 12:20:32

Now you got it (Easy)

Time of First Successful Submission: 2026-01-14 13:37:56

Now you got it (Hard)

Time of First Successful Submission: 2026-01-14 13:59:42

Loop Lunacy (Easy)

Time of First Successful Submission: 2026-01-14 15:05:29

Loop Lunacy (Hard)

Time of First Successful Submission: 2026-01-14 15:15:27

Nosy Neighbor (Easy)

Time of First Successful Submission: 2026-01-14 15:33:11

Nosy Neighbor (Hard)

Time of First Successful Submission: 2026-01-14 15:38:06

Recursive Ruin (Easy)

Time of First Successful Submission: 2026-01-21 08:57:27

Recursive Ruin (Hard)

Time of First Successful Submission: 2026-01-21 09:04:56

Lingering Leftover (Easy)

Time of First Successful Submission: 2026-01-21 09:20:51

Lingering Leftover (Hard)

Time of First Successful Submission: 2026-01-21 09:28:10

Latent Leak (Easy)

Time of First Successful Submission: 2026-01-21 09:39:04

Latent Leak (Hard)

Time of First Successful Submission: 2026-01-21 09:46:08

Fork Foolery (Easy)

Time of First Successful Submission: 2026-01-21 10:22:31

Fork Foolery (Hard)

Time of First Successful Submission: 2026-01-21 10:59:36

Canary Conundrum (Easy)

Time of First Successful Submission: 2026-01-21 11:55:56

Canary Conundrum (Hard)

Time of First Successful Submission: 2026-01-21 12:00:06

A Crafty Clobber (Easy)

Time of First Successful Submission: 2026-01-21 12:16:43

A Crafty Clobber (Hard)

Time of First Successful Submission: 2026-01-21 12:20:33

Can It Fizz?

Time of First Successful Submission: 2026-01-21 14:43:25

Does It Buzz?

Time of First Successful Submission: 2026-01-21 16:20:01

Make It FizzBuzz

Time of First Successful Submission: 2026-01-28 09:40:12

Terrible Token (Easy)

Time of First Successful Submission: 2026-01-28 09:49:26

Terrible Token (Hard)

Time of First Successful Submission: 2026-01-28 09:50:29

Tangled Ticket (Easy)

Time of First Successful Submission: 2026-01-28 09:53:07

Tangled Ticket (Hard)

Time of First Successful Submission: 2026-01-28 09:55:36

Bit Bender

Time of First Successful Submission: 2026-01-28 10:24:20

Substitution Sorcery

Time of First Successful Submission: 2026-01-28 10:37:06

Meager Mangler (Easy)

Time of First Successful Submission: 2026-01-28 10:57:45

Meager Mangler (Hard)

Time of First Successful Submission: 2026-01-28 10:59:49

Monstrous Mangler (Easy)

Time of First Successful Submission: 2026-01-28 11:41:45

Monstrous Mangler (Hard)

Time of First Successful Submission: 2026-01-28 11:42:57

Patched Up (Easy)

Time of First Successful Submission: 2026-01-28 11:56:05

Patched Up (Hard)

Time of First Successful Submission: 2026-01-28 11:57:33

Puzzle Patch (Easy)

Time of First Successful Submission: 2026-01-28 12:01:46

Puzzle Patch (Hard)

Time of First Successful Submission: 2026-01-28 12:03:04

Patch Perfect (Easy)

Time of First Successful Submission: 2026-01-28 12:07:32

Patch Perfect (Hard)

Time of First Successful Submission: 2026-01-28 12:11:51

Trust the Yancode (Easy)

Time of First Successful Submission: 2026-01-28 12:38:11

Trust the Yancode (Hard)

Time of First Successful Submission: 2026-01-28 13:19:00

Know the Yancode (Easy)

Time of First Successful Submission: 2026-01-28 13:32:14

Know the Yancode (Hard)

Time of First Successful Submission: 2026-01-28 13:36:28

Master the Yancode (Easy)

Time of First Successful Submission: 2026-01-28 13:50:36

Master the Yancode (Hard)

Time of First Successful Submission: 2026-01-28 13:59:25

Transcend the Yancode (Easy)

Time of First Successful Submission: 2026-01-28 14:05:16

Transcend the Yancode (Hard)

Time of First Successful Submission: 2026-01-28 14:10:04

The Yanalyzer (Easy)

Time of First Successful Submission: 2026-01-28 15:26:29

The Yanalyzer (Hard)

Time of First Successful Submission: 2026-01-29 10:56:55

The Yangler (Easy)

Time of First Successful Submission: 2026-01-29 11:20:19

The Yangler (Hard)

Time of First Successful Submission: 2026-01-29 11:53:19

Yancraft (Easy)

Time of First Successful Submission: 2026-01-29 12:27:28

Yancraft (Hard)

Time of First Successful Submission: 2026-01-29 12:39:15

Yansanity (Easy)

Time of First Successful Submission: 2026-01-29 15:43:47

Yansanity (Hard)

Time of First Successful Submission: 2026-02-04 09:53:50

When the Cow Says Moo

Time of First Successful Submission: 2026-02-04 12:49:52

Predictable Migration

Time of First Successful Submission: 2026-02-04 14:15:58

Hashing Heifers

Time of First Successful Submission: 2026-02-04 14:46:15

Salty Stampede

Time of First Successful Submission: 2026-02-04 15:35:08

Loose Link (Easy)

Time of First Successful Submission: 2026-02-09 10:18:32

Loose Link (Hard)

Time of First Successful Submission: 2026-02-09 10:21:51

Call Chain (Easy)

Time of First Successful Submission: 2026-02-09 10:24:19

Call Chain (Hard)

Time of First Successful Submission: 2026-02-09 10:26:50

Chain of Command (Easy)

Time of First Successful Submission: 2026-02-09 10:37:06

Chain of Command (Hard)

Time of First Successful Submission: 2026-02-09 10:40:18

Stop, Pop, and ROP (Easy)

Time of First Successful Submission: 2026-02-09 11:10:31

Stop, Pop, and ROP (Hard)

Time of First Successful Submission: 2026-02-09 11:13:52

Stop, Pop and ROP II (Easy)

Time of First Successful Submission: 2026-02-09 11:34:21

Stop, Pop, and ROP II (Hard)

Time of First Successful Submission: 2026-02-09 11:38:12

Indirect Invocation (Easy)

Time of First Successful Submission: 2026-02-09 12:03:10

Indirect Invocation (Hard)

Time of First Successful Submission: 2026-02-09 12:06:02

Leaky Libc (Easy)

Time of First Successful Submission: 2026-02-09 12:45:51

Leaky Libc (Hard)

Time of First Successful Submission: 2026-02-09 12:48:31

Putsception (Easy)

Time of First Successful Submission: 2026-02-09 13:29:12

Putsception (Hard)

Time of First Successful Submission: 2026-02-09 13:33:32

Pivotal Prelude (Easy)

Time of First Successful Submission: 2026-02-09 14:00:53

Pivotal Prelude (Hard)

Time of First Successful Submission: 2026-02-09 14:06:58

Pivotal Pointer (Easy)

Time of First Successful Submission: 2026-02-09 14:16:53

Pivotal Pointer (Hard)

Time of First Successful Submission: 2026-02-09 14:43:39

Pivotal Payload (Easy)

Time of First Successful Submission: 2026-02-09 14:46:38

Pivotal Payload (Hard)

Time of First Successful Submission: 2026-02-09 14:49:28

Pivotal Pursuit (Easy)

Time of First Successful Submission: 2026-02-09 15:07:23

Pivotal Pursuit (Hard)

Time of First Successful Submission: 2026-02-09 15:19:57

Guarded Gadgets (Easy)

Time of First Successful Submission: 2026-02-09 16:23:06

Guarded Gadgets (Hard)

Time of First Successful Submission: 2026-02-09 16:26:13

ROP Roulette (Easy)

Time of First Successful Submission: 2026-02-11 10:40:24

ROP Roulette (Hard)

Time of First Successful Submission: 2026-02-11 10:50:06

Libc Lottery (Easy)

Time of First Successful Submission: 2026-02-11 16:03:13

Libc Lottery (Hard)

Time of First Successful Submission: 2026-02-11 16:09:50

Freebie (Easy)

Time of First Successful Submission: 2026-02-18 09:26:28

Freebie (Hard)

Time of First Successful Submission: 2026-02-18 09:28:25

Freebin Feint (Easy)

Time of First Successful Submission: 2026-02-18 09:30:32

Freebin Feint (Hard)

Time of First Successful Submission: 2026-02-18 09:41:27

Free Flag Fumble (Easy)

Time of First Successful Submission: 2026-02-18 09:58:27

Free Flag Fumble (Hard)

Time of First Successful Submission: 2026-02-18 10:07:24

Fickle Free (Easy)

Time of First Successful Submission: 2026-02-18 11:37:33

Fickle Free (Hard)

Time of First Successful Submission: 2026-02-18 11:42:07

Malloc Mirage (Easy)

Time of First Successful Submission: 2026-02-18 11:49:57

Malloc Mirage (Hard)

Time of First Successful Submission: 2026-02-18 11:58:26

Seeking Secrets (Easy)

Time of First Successful Submission: 2026-02-18 12:24:41

Seeking Secrets (Hard)

Time of First Successful Submission: 2026-02-18 12:28:15

Seeking Substantial Secrets (Easy)

Time of First Successful Submission: 2026-02-18 12:33:24

Seeking Substantial Secrets (Hard)

Time of First Successful Submission: 2026-02-18 12:54:40

Seeking Spanless Secrets (Easy)

Time of First Successful Submission: 2026-02-18 13:26:55

Seeking Spanless Secrets (Hard)

Time of First Successful Submission: 2026-02-18 13:27:56

Seeking Smuggled Secrets (Easy)

Time of First Successful Submission: 2026-02-18 14:06:09

Seeking Smuggled Secrets (Hard)

Time of First Successful Submission: 2026-02-18 14:07:13

Sus Sequence (Easy)

Time of First Successful Submission: 2026-02-18 14:26:04

Sus Sequence (Hard)

Time of First Successful Submission: 2026-02-18 14:27:06

Echo Emanations (Easy)

Time of First Successful Submission: 2026-02-18 16:03:23

Echo Emanations (Hard)

Time of First Successful Submission: 2026-02-18 16:09:08

Stack Spoofing (Easy)

Time of First Successful Submission: 2026-02-23 12:04:18

Stack Spoofing (Hard)

Time of First Successful Submission: 2026-02-23 12:12:18

Stack Summoning (Easy)

Time of First Successful Submission: 2026-02-23 12:34:24

Stack Summoning (Hard)

Time of First Successful Submission: 2026-02-23 12:36:23

Enterprising Echo (Easy)

Time of First Successful Submission: 2026-02-23 13:13:39

Enterprising Echo (Hard)

Time of First Successful Submission: 2026-02-23 13:24:26

Ephemeral Echo (Easy)

Time of First Successful Submission: 2026-02-23 14:33:55

Ephemeral Echo (Hard)

Time of First Successful Submission: 2026-02-23 14:39:11

Seeking Safe Secrets (Easy)

Time of First Successful Submission: 2026-02-24 10:29:52

Seeking Safe Secrets (Hard)

Time of First Successful Submission: 2026-02-24 10:31:31

Sus Sequence Safety (Easy)

Time of First Successful Submission: 2026-02-24 11:25:32

Sus Sequence Safety (Hard)

Time of First Successful Submission: 2026-02-24 11:28:39

Safely Stack Summoning (Easy)

Time of First Successful Submission: 2026-02-24 12:00:07

Safely Stack Summoning (Hard)

Time of First Successful Submission: 2026-02-24 12:01:16

Overlapping Odyssey (Easy)

Time of First Successful Submission: 2026-02-24 13:11:20

Overlapping Odyssey (Hard)

Time of First Successful Submission: 2026-02-24 13:31:35

Tcache Terror (Easy)

Time of First Successful Submission: 2026-02-24 15:25:01

Tcache Terror (Hard)

Time of First Successful Submission: 2026-02-24 15:31:10

Containment Composition (Easy)

Time of First Successful Submission: 2026-02-25 09:10:50

Containment Composition (Hard)

Time of First Successful Submission: 2026-02-25 09:19:19

Constant Corruption (Easy)

Time of First Successful Submission: 2026-02-25 10:06:49

Constant Corruption (Hard)

Time of First Successful Submission: 2026-02-25 10:17:42

Return to YanLand (Easy)

Time of First Successful Submission: 2026-02-25 11:14:10

Return to YanLand (Hard)

Time of First Successful Submission: 2026-02-25 11:23:01

Escape from YanLand (Easy)

Time of First Successful Submission: 2026-02-25 12:18:29

Escape from YanLand (Hard)

Time of First Successful Submission: 2026-02-25 12:32:10

The YanFilter (Easy)

Time of First Successful Submission: 2026-02-26 10:45:01

The YanFilter (Hard)

Time of First Successful Submission: 2026-02-26 10:59:49

The Great YanFilter (Easy)

Time of First Successful Submission: 2026-02-26 13:19:50

The Great YanFilter (Hard)

Time of First Successful Submission: 2026-02-26 13:36:26

Yan85 Reborn (Easy)

Time of First Successful Submission: 2026-02-26 15:13:03

Yan85 Reborn (Hard)

Time of First Successful Submission: 2026-02-26 15:42:05


System Security

93 / 93 150 / 3872


chroot-escape-basic

Time of First Successful Submission: 2026-03-03 13:10:58

chroot-shellcode

Time of First Successful Submission: 2026-03-03 13:55:09

chroot-proper

Time of First Successful Submission: 2026-03-03 13:57:25

seccomp-basic

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

seccomp-linkat

Time of First Successful Submission: 2026-03-03 14:18:58

seccomp-fchdir

Time of First Successful Submission: 2026-03-05 09:46:14

seccomp-rechroot

Time of First Successful Submission: 2026-03-05 10:16:08

seccomp-only

Time of First Successful Submission: 2026-03-05 10:49:36

seccomp-arch32

Time of First Successful Submission: 2026-03-05 11:52:22

seccomp-minimal

Time of First Successful Submission: 2026-03-05 12:34:17

seccomp-timebased

Time of First Successful Submission: 2026-03-05 12:51:31

seccomp-readonly

Time of First Successful Submission: 2026-03-05 13:06:46

process-isolation

Time of First Successful Submission: 2026-03-05 13:36:23

mount-namespace

Time of First Successful Submission: 2026-03-06 09:44:28

mount-cleanup

Time of First Successful Submission: 2026-03-06 09:49:59

mount-readonly

Time of First Successful Submission: 2026-03-06 10:03:22

mount-shellcode

Time of First Successful Submission: 2026-03-06 10:08:35

mount-bindmount

Time of First Successful Submission: 2026-03-06 11:29:55

level1.0

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

level1.1

Time of First Successful Submission: 2026-03-13 08:23:33

level2.0

Time of First Successful Submission: 2026-03-13 08:25:10

level2.1

Time of First Successful Submission: 2026-03-13 09:08:40

level3.0

Time of First Successful Submission: 2026-03-13 09:27:12

level3.1

Time of First Successful Submission: 2026-03-13 09:34:44

level4.0

Time of First Successful Submission: 2026-03-13 09:51:17

level4.1

Time of First Successful Submission: 2026-03-13 09:52:43

level5.0

Time of First Successful Submission: 2026-03-13 10:12:28

level5.1

Time of First Successful Submission: 2026-03-13 10:23:06

level6.0

Time of First Successful Submission: 2026-03-13 10:46:57

level6.1

Time of First Successful Submission: 2026-03-13 10:48:00

level7.0

Time of First Successful Submission: 2026-03-13 11:39:16

level7.1

Time of First Successful Submission: 2026-03-20 09:34:20

level8.0

Time of First Successful Submission: 2026-03-20 09:54:58

level8.1

Time of First Successful Submission: 2026-03-20 09:58:03

level9.0

Time of First Successful Submission: 2026-03-20 10:21:49

level9.1

Time of First Successful Submission: 2026-03-20 12:02:35

level10.0

Time of First Successful Submission: 2026-03-20 12:11:11

level10.1

Time of First Successful Submission: 2026-03-20 12:12:05

level11.0

Time of First Successful Submission: 2026-03-20 12:14:47

level11.1

Time of First Successful Submission: 2026-03-20 12:28:43

level1.0

Time of First Successful Submission: 2026-03-20 14:37:11

level1.1

Time of First Successful Submission: 2026-03-20 14:40:03

level2.0

Time of First Successful Submission: 2026-03-20 15:11:54

level2.1

Time of First Successful Submission: 2026-03-20 15:13:27

level3.0

Time of First Successful Submission: 2026-03-20 15:17:06

level3.1

Time of First Successful Submission: 2026-03-20 15:18:17

level4.0

Time of First Successful Submission: 2026-03-20 15:24:52

level4.1

Time of First Successful Submission: 2026-03-20 15:26:18

level5.0

Time of First Successful Submission: 2026-03-20 16:10:10

level5.1

Time of First Successful Submission: 2026-03-20 16:11:26

level6.0

Time of First Successful Submission: 2026-03-26 09:38:41

level6.1

Time of First Successful Submission: 2026-03-26 09:40:45

level7.0

Time of First Successful Submission: 2026-03-26 09:58:20

level7.1

Time of First Successful Submission: 2026-03-26 09:59:12

level8.0

Time of First Successful Submission: 2026-03-26 11:59:53

level8.1

Time of First Successful Submission: 2026-03-26 12:01:16

level9.0

Time of First Successful Submission: 2026-03-26 13:07:49

level9.1

Time of First Successful Submission: 2026-03-26 13:08:56

level10.0

Time of First Successful Submission: 2026-03-26 13:19:01

level10.1

Time of First Successful Submission: 2026-03-26 13:20:59

level11.0

Time of First Successful Submission: 2026-03-26 15:55:25

level11.1

Time of First Successful Submission: 2026-03-26 15:56:49

level12.0

Time of First Successful Submission: 2026-03-26 17:53:01

level12.1

Time of First Successful Submission: 2026-03-26 17:54:00

Baby Spectre 1

Time of First Successful Submission: 2026-04-01 10:29:34

Baby Spectre 2

Time of First Successful Submission: 2026-04-01 11:16:54

Baby Spectre 3

Time of First Successful Submission: 2026-04-01 11:31:48

Baby Spectre 4

Time of First Successful Submission: 2026-04-01 11:50:19

Baby Spectre 5

Time of First Successful Submission: 2026-04-01 15:10:37

Prefetch Peek

Time of First Successful Submission: 2026-04-01 19:18:14

Spooky Spectre 1

Time of First Successful Submission: 2026-04-08 14:46:36

Spooky Spectre 2

Time of First Successful Submission: 2026-04-08 16:22:33

Yan85 Reloaded

Time of First Successful Submission: 2026-04-10 14:14:31

Ghost in the YPU 1

Time of First Successful Submission: 2026-04-13 18:11:01

Ghost in the YPU 2

Time of First Successful Submission: 2026-04-14 10:40:23

Molten Access

Time of First Successful Submission: 2026-04-14 12:05:23

Molten Walk

Time of First Successful Submission: 2026-04-14 13:45:33

level1.0

Time of First Successful Submission: 2026-04-15 09:25:19

level1.1

Time of First Successful Submission: 2026-04-15 09:41:13

level2.0

Time of First Successful Submission: 2026-04-15 12:06:37

level2.1

Time of First Successful Submission: 2026-04-15 12:11:48

level3.0

Time of First Successful Submission: 2026-04-15 14:16:55

level3.1

Time of First Successful Submission: 2026-04-15 15:07:47

level4.0

Time of First Successful Submission: 2026-04-16 14:46:49

level4.1

Time of First Successful Submission: 2026-04-16 14:52:12

level5.0

Time of First Successful Submission: 2026-04-17 12:16:10

level5.1

Time of First Successful Submission: 2026-04-17 12:23:54

level6.0

Time of First Successful Submission: 2026-04-21 10:25:25

level6.1

Time of First Successful Submission: 2026-04-21 10:32:03

level7.0

Time of First Successful Submission: 2026-04-21 14:09:36

level7.1

Time of First Successful Submission: 2026-04-21 14:17:45

level8.0

Time of First Successful Submission: 2026-04-21 14:26:34

level8.1

Time of First Successful Submission: 2026-04-21 14:31:58


Software Exploitation

90 / 90 135 / 2689


Level1.0

Time of First Successful Submission: 2026-04-22 08:57:03

Level1.1

Time of First Successful Submission: 2026-04-22 08:59:12

Level2.0

Time of First Successful Submission: 2026-04-22 09:01:45

Level2.1

Time of First Successful Submission: 2026-04-22 09:02:31

Level3.0

Time of First Successful Submission: 2026-04-22 09:42:13

Level3.1

Time of First Successful Submission: 2026-04-22 09:47:44

Level4.0

Time of First Successful Submission: 2026-04-22 10:05:59

Level4.1

Time of First Successful Submission: 2026-04-22 10:11:26

Level5.0

Time of First Successful Submission: 2026-04-22 11:57:26

Level5.1

Time of First Successful Submission: 2026-04-22 12:08:51

Level6.0

Time of First Successful Submission: 2026-04-22 12:41:30

Level6.1

Time of First Successful Submission: 2026-04-22 12:55:35

Level7.0

Time of First Successful Submission: 2026-04-22 13:53:04

Level7.1

Time of First Successful Submission: 2026-04-22 13:58:12

Level8.0

Time of First Successful Submission: 2026-05-05 13:38:26

Level8.1

Time of First Successful Submission: 2026-05-05 14:54:58

Level9.0

Time of First Successful Submission: 2026-05-07 09:21:02

Level9.1

Time of First Successful Submission: 2026-05-07 09:36:21

Level10.0

Time of First Successful Submission: 2026-05-13 09:45:20

Level10.1

Time of First Successful Submission: 2026-05-13 10:13:24

Level11.0

Time of First Successful Submission: 2026-05-20 08:59:58

Level11.1

Time of First Successful Submission: 2026-05-20 09:18:11

Level12.0

Time of First Successful Submission: 2026-05-20 13:58:59

Level12.1

Time of First Successful Submission: 2026-05-20 14:17:47

level1

Time of First Successful Submission: 2026-05-27 09:24:19

level2

Time of First Successful Submission: 2026-05-27 09:45:53

level3

Time of First Successful Submission: 2026-05-27 09:53:52

level4

Time of First Successful Submission: 2026-07-01 09:58:14

level5

Time of First Successful Submission: 2026-07-01 12:55:43

level6

Time of First Successful Submission: 2026-07-01 15:16:07

level7

Time of First Successful Submission: 2026-07-05 10:39:45

level8

Time of First Successful Submission: 2026-07-05 11:04:38

level9

Time of First Successful Submission: 2026-07-05 11:21:51

level10

Time of First Successful Submission: 2026-07-05 11:29:17

level11

Time of First Successful Submission: 2026-07-05 13:04:00

level12

Time of First Successful Submission: 2026-07-05 13:28:15

level13

Time of First Successful Submission: 2026-07-05 13:53:30

level14

Time of First Successful Submission: 2026-07-07 08:42:43

level15

Time of First Successful Submission: 2026-07-07 08:56:30

level16

Time of First Successful Submission: 2026-07-07 09:02:35

level17

Time of First Successful Submission: 2026-07-07 09:30:18

level18

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

level19

Time of First Successful Submission: 2026-07-07 10:40:33

level20

Time of First Successful Submission: 2026-07-07 10:43:35

level21

Time of First Successful Submission: 2026-07-07 12:46:47

level1.0

Time of First Successful Submission: 2026-07-16 12:58:33

level1.1

Time of First Successful Submission: 2026-07-16 12:59:49

level2.0

Time of First Successful Submission: 2026-08-12 09:20:22

level2.1

Time of First Successful Submission: 2026-08-12 09:24:42

level3.0

Time of First Successful Submission: 2026-08-12 11:11:53

level3.1

Time of First Successful Submission: 2026-08-12 11:16:45

level4.0

Time of First Successful Submission: 2026-08-12 12:34:52

level4.1

Time of First Successful Submission: 2026-08-12 12:38:11

level5.0

Time of First Successful Submission: 2026-08-12 12:46:54

level5.1

Time of First Successful Submission: 2026-08-12 12:48:00

level6.0

Time of First Successful Submission: 2026-08-12 13:01:12

level6.1

Time of First Successful Submission: 2026-08-12 13:06:25

level7.0

Time of First Successful Submission: 2026-08-12 14:06:16

level7.1

Time of First Successful Submission: 2026-08-12 14:24:00

level8.0

Time of First Successful Submission: 2026-08-19 07:57:35

level8.1

Time of First Successful Submission: 2026-08-19 09:28:19

level9.0

Time of First Successful Submission: 2026-08-19 11:17:37

level9.1

Time of First Successful Submission: 2026-08-19 11:30:41

level10.0

Time of First Successful Submission: 2026-08-19 15:24:24

level10.1

Time of First Successful Submission: 2026-08-19 15:28:05

level1.0

Time of First Successful Submission: 2026-09-02 08:19:45

level1.1

Time of First Successful Submission: 2026-09-02 08:21:22

level2.0

Time of First Successful Submission: 2026-09-02 08:58:19

level2.1

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

level3.0

Time of First Successful Submission: 2026-09-02 09:39:42

level3.1

Time of First Successful Submission: 2026-09-02 09:43:48

level4.0

Time of First Successful Submission: 2026-09-02 10:27:01

level4.1

Time of First Successful Submission: 2026-09-02 10:27:53

level5.0

Time of First Successful Submission: 2026-09-02 15:08:11

level5.1

Time of First Successful Submission: 2026-09-02 15:13:09

level6.0

Time of First Successful Submission: 2026-09-09 08:16:50

level6.1

Time of First Successful Submission: 2026-09-09 08:17:42

level7.0

Time of First Successful Submission: 2026-09-09 10:08:59

level7.1

Time of First Successful Submission: 2026-09-09 10:09:56

level8.0

Time of First Successful Submission: 2026-09-09 12:53:12

level8.1

Time of First Successful Submission: 2026-09-09 12:53:59

level9

Time of First Successful Submission: 2026-09-09 13:51:19

Level-1

Time of First Successful Submission: 2026-09-16 10:54:08

Level-2

Time of First Successful Submission: 2026-09-16 15:15:51

Level-3

Time of First Successful Submission: 2026-09-19 12:56:47

Level-4

Time of First Successful Submission: 2026-09-19 14:05:33

Level-5

Time of First Successful Submission: 2026-09-23 09:37:25

Level-6

Time of First Successful Submission: 2026-09-23 12:57:01

Level-7

Time of First Successful Submission: 2026-09-25 15:16:21

Level-8

Time of First Successful Submission: 2026-09-25 15:23:03


Start Here

10 / 10 5936 / 73414


Using the Terminal

Time of First Successful Submission: 2025-11-26 11:37:54

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-26 11:39:44

Using the GUI Desktop

Time of First Successful Submission: 2025-11-26 11:42:18

Pasting into the Desktop

Time of First Successful Submission: 2025-11-26 11:43:47

Restarting Challenges

Time of First Successful Submission: 2025-11-26 11:49:20

Challenge Programs

Time of First Successful Submission: 2025-11-26 11:51:04

The Flag File

Time of First Successful Submission: 2025-11-26 11:52:06

Using Privileged Mode

Time of First Successful Submission: 2025-11-26 11:53:57

Persistent Home Directories - One

Time of First Successful Submission: 2025-11-26 11:56:21

Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-26 11:56:54


Linux Luminarium

128 / 128 5951 / 53692


Intro to Commands

Time of First Successful Submission: 2026-10-07 12:29:06

Intro to Arguments

Time of First Successful Submission: 2026-10-07 12:29:30

Command History

Time of First Successful Submission: 2026-10-07 12:29:50

The Root

Time of First Successful Submission: 2026-10-07 12:30:23

Program and absolute paths

Time of First Successful Submission: 2026-10-07 12:30:48

Position thy self

Time of First Successful Submission: 2026-10-07 12:31:25

Position elsewhere

Time of First Successful Submission: 2026-10-07 12:32:11

implicit relative paths, from /

Time of First Successful Submission: 2026-10-07 12:32:45

explicit relative paths, from /

Time of First Successful Submission: 2026-10-07 12:33:09

implicit relative path

Time of First Successful Submission: 2026-10-07 12:33:36

home sweet home

Time of First Successful Submission: 2026-10-07 12:37:20

cat: not the pet, but the command!

Time of First Successful Submission: 2026-10-07 12:37:43

catting absolute paths

Time of First Successful Submission: 2026-10-07 12:38:08

more catting practice

Time of First Successful Submission: 2026-10-07 12:38:36

grepping for a needle in a haystack

Time of First Successful Submission: 2026-10-07 12:39:04

comparing files

Time of First Successful Submission: 2026-10-07 12:39:33

listing files

Time of First Successful Submission: 2026-10-07 12:40:16

touching files

Time of First Successful Submission: 2026-10-07 12:40:44

removing files

Time of First Successful Submission: 2026-10-07 12:41:10

moving files

Time of First Successful Submission: 2026-10-07 12:41:39

copying files

Time of First Successful Submission: 2026-10-07 12:42:07

hidden files

Time of First Successful Submission: 2026-10-07 12:42:31

An Epic Filesystem Quest

Time of First Successful Submission: 2026-10-07 12:45:43

making directories

Time of First Successful Submission: 2026-10-07 12:46:09

finding files

Time of First Successful Submission: 2026-10-07 12:47:25

linking files

Time of First Successful Submission: 2026-10-07 12:48:50

Learning From Documentation

Time of First Successful Submission: 2026-10-07 12:49:30

Learning Complex Usage

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Reading Manuals

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Searching Manuals

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Searching For Manuals

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Helpful Programs

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Help for Builtins

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Matching with *

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Matching with ?

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Matching with []

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Matching paths with []

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Multiple globs

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Mixing globs

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Exclusionary globbing

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Tab completion

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Multiple options for tab completion

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Tab completion on commands

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Redirecting output

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Redirecting more output

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Appending output

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Redirecting errors

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Redirecting input

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Grepping stored results

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Grepping live output

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Grepping errors

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Filtering with grep -v

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Filtering with sed

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Duplicating piped data with tee

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Process substitution for input

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Writing to multiple programs

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Split-piping stderr and stdout

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Named pipes

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Printing Variables

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Setting Variables

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Multi-word Variables

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Exporting Variables

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Printing Exported Variables

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Storing Command Output

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Reading Input

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Reading Files

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Translating characters

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Deleting characters

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Deleting newlines

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Extracting the first lines with head

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Extracting specific sections of text

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Sorting data

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Listing Processes

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Killing Processes

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Interrupting Processes

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Killing Misbehaving Processes

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Suspending Processes

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Resuming Processes

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Backgrounding Processes

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Foregrounding Processes

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Starting Backgrounded Processes

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Process Exit Codes

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Becoming root with su

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Other users with su

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Cracking passwords

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Using sudo

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Changing File Ownership

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Groups and Files

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Fun With Groups Names

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Changing Permissions

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Executable Files

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Permission Tweaking Practice

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Permissions Setting Practice

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The SUID Bit

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Chaining with Semicolons

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Building on Success

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Handling Failure

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Your First Shell Script

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Redirecting Script Output

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Executable Shell Scripts

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Understanding Shebangs

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Scripting with Arguments

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Scripting with Conditionals

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Scripting with Default Cases

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Scripting with Multiple Conditions

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Reading Shell Scripts

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Launching Screen

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Detaching and Attaching

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Finding Sessions

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Switching Windows

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Detaching and Attaching (tmux)

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Switching Windows (tmux)

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The PATH Variable

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Setting PATH

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Finding Commands

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Adding Commands

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Hijacking Commands

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Bashrc Backdoor

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Sniffing Input

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Overshared Directories

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Tricky Linking

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Sniffing Process Arguments

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Snooping on Configurations

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The Fork Bomb

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Disk-Space Doomsday

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rm -rf /

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Life after rm -rf /

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Finding meaning after rm -rf /

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Computing 101

99 / 132 1391 / 25546


Your First Register

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Your First Syscall

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Exit Codes

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Building Executables

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Moving Between Registers

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Loading From Memory

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More Loading Practice

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Dereferencing Pointers

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Dereferencing Yourself

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Dereferencing with Offsets

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Stored Addresses

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Double Dereference

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The Stack

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Stack Offsets

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Program Arguments on the Stack

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Popping From the Stack

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Negative Numbers

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Negative Numbers (16-bit)

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Negative Numbers (32-bit)

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Encoding Negatives

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Binary and Hex Encoding

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More Hex

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Decoding Hex

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Mixed Conversions

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Disassembling Programs

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Tracing Syscalls

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Starting GDB

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Quitting GDB

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Starting Programs in GDB

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Disassembling in GDB

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Stepping Through Instructions

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Reading Register Values

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Setting Register Values

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Popping Stack Values

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Examining Memory

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Examining Stack Pointers

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Cooperative Debugging

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Running with Arguments

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Redirecting Input in GDB

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Writing Output

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Chaining Syscalls

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Writing Strings

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Reading Data

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Reading Exactly

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Opening Files

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Hardcoding the Filename

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RIP-Relative Strings

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Comparing Values

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Comparing Characters

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Conditional Control Flow

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Comparing Strings

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Reverse the Password

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Conditionals Without Conditionals

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Recognizing Loops

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Writing Loops

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Writing From a Shared Library

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Returning a Value

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Calling Through a Pointer

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Calling Through a Pointer with an Argument

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Saving Caller-Saved Registers

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Saving Callee-Saved Registers

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Sign Extension

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Little-Endian Bytes

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Qword by Qword

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Dword by Dword

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Word by Word

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Byte by Byte

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Cracking a Struct

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Scrambled Struct

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Reverse the Calculation

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Reverse the Reverse

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Dealing with Bitwise Operations

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Even or Odd

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Masking Bits

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Lowercase a String

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Uppercase a String

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Swap Case

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Shifting Left

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Shifting Right

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Loops on Data

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Reaching Into the Caller's Frame

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Loading Stale Stack Data

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Stealing Stale Stack Data

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Reserving Your Own Frame

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Using Your Own Frame

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Environment Variables on the Stack

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Aligning the Stack Through the Environment

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Aligning the Stack Through GDB, Generalized

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A Single Digit

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Two Digits

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String to Integer

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Negative Numbers

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Where the Number Ends

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A Whole Program

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A Single Digit, Back to Text

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Divide and Remainder

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Drop the Leading Zero

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Integer to String

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Negative Numbers, Back to Text

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Content Injection

10 / 10 70 / 168


Teacher Login

Time of First Successful Submission: 2026-09-30 11:19:13

Teacher Login 2

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Teacher Login 3

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Teacher Login 4

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Teacher Login 5

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Teacher Login 6

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Teacher Login 7

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Class Cancellation

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Class Cancellation 2

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Class Cancellation 3

Time of First Successful Submission: 2026-09-30 12:08:09


DSU Cyber Camps

10 / 104 25860 / 73893


Using the Terminal

Time of First Successful Submission: 2025-11-26 11:37:54

Using the VSCode Workspace

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Using the GUI Desktop

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Pasting into the Desktop

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Restarting Challenges

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Challenge Programs

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The Flag File

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Using Privileged Mode

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Persistent Home Directories - One

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Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-26 11:56:54


GCA CTF

10 / 104 25860 / 73893


Using the Terminal

Time of First Successful Submission: 2025-11-26 11:37:54

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-26 11:39:44

Using the GUI Desktop

Time of First Successful Submission: 2025-11-26 11:42:18

Pasting into the Desktop

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Restarting Challenges

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Challenge Programs

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The Flag File

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Using Privileged Mode

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Persistent Home Directories - One

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Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-26 11:56:54


The House Always Wins

6 / 9 35 / 144


Level1

Time of First Successful Submission: 2026-09-30 12:58:39

Level2

Time of First Successful Submission: 2026-09-30 13:34:16

Level3

Time of First Successful Submission: 2026-09-30 13:38:23

Level4

Time of First Successful Submission: 2026-09-30 13:49:30

Level5

Time of First Successful Submission: 2026-09-30 14:57:34

Level6

Time of First Successful Submission: 2026-09-30 15:36:21