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Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2026-02-28 10:47:18


Program Security

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Terrible Token (Easy)

Time of First Successful Submission: 2026-02-25 16:45:00

Terrible Token (Hard)

Time of First Successful Submission: 2026-02-25 16:49:22

Tangled Ticket (Easy)

Time of First Successful Submission: 2026-02-25 16:54:46

Tangled Ticket (Hard)

Time of First Successful Submission: 2026-02-25 18:54:24

Bit Bender

Time of First Successful Submission: 2026-02-25 19:14:58

Substitution Sorcery

Time of First Successful Submission: 2026-02-25 19:31:25

Meager Mangler (Easy)

Time of First Successful Submission: 2026-02-25 19:36:56

Meager Mangler (Hard)

Time of First Successful Submission: 2026-02-25 19:42:03

Monstrous Mangler (Easy)

Time of First Successful Submission: 2026-02-25 19:46:53

Monstrous Mangler (Hard)

Time of First Successful Submission: 2026-02-25 20:36:00

Patched Up (Easy)

Time of First Successful Submission: 2026-02-25 20:50:31

Patched Up (Hard)

Time of First Successful Submission: 2026-02-25 20:58:13

Puzzle Patch (Easy)

Time of First Successful Submission: 2026-02-25 21:04:23

Puzzle Patch (Hard)

Time of First Successful Submission: 2026-02-25 21:06:07

Patch Perfect (Easy)

Time of First Successful Submission: 2026-02-25 21:08:53

Patch Perfect (Hard)

Time of First Successful Submission: 2026-02-25 21:15:19

Trust the Yancode (Easy)

Time of First Successful Submission: 2026-02-28 10:00:57

Trust the Yancode (Hard)

Time of First Successful Submission: 2026-02-28 10:05:00


Software Exploitation

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Level1.0

Time of First Successful Submission: 2026-02-22 17:43:12

Level1.1

Time of First Successful Submission: 2026-02-22 17:47:36

Level2.0

Time of First Successful Submission: 2026-02-22 17:51:13

Level2.1

Time of First Successful Submission: 2026-02-22 17:58:01


Start Here

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Challenge Programs

Time of First Successful Submission: 2026-02-22 16:41:28

The Flag File

Time of First Successful Submission: 2026-02-22 16:42:19

Using Privileged Mode

Time of First Successful Submission: 2026-02-22 16:44:36

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-22 16:45:49

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-22 16:46:31


Playing With Programs

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What's the password?

Time of First Successful Submission: 2026-02-23 22:03:52

... and again!

Time of First Successful Submission: 2026-02-23 22:04:32

Newline Troubles

Time of First Successful Submission: 2026-02-23 22:07:37

Reasoning about files

Time of First Successful Submission: 2026-02-23 22:09:06

Specifying Filenames

Time of First Successful Submission: 2026-02-23 22:10:06

Binary and Hex Encoding

Time of First Successful Submission: 2026-02-23 22:16:00

More Hex

Time of First Successful Submission: 2026-02-23 22:18:01

Decoding Hex

Time of First Successful Submission: 2026-02-23 22:19:47

Decoding Practice

Time of First Successful Submission: 2026-02-23 22:23:08

Encoding Practice

Time of First Successful Submission: 2026-02-23 22:30:19

Hex-encoding ASCII

Time of First Successful Submission: 2026-02-23 22:32:26

Nested Encoding

Time of First Successful Submission: 2026-02-23 22:43:35

Hex-encoding UTF-8

Time of First Successful Submission: 2026-02-23 22:45:35

UTF Mixups

Time of First Successful Submission: 2026-02-23 22:47:52

Modifying Encoded Data

Time of First Successful Submission: 2026-02-23 23:06:30

Decoding Base64

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

Encoding Base64

Time of First Successful Submission: 2026-02-23 23:08:46

Dealing with Obfuscation

Time of First Successful Submission: 2026-02-23 23:17:22

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-02-23 23:27:37

Your First HTTP Request

Time of First Successful Submission: 2026-02-23 23:34:06


GCA CTF

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Challenge Programs

Time of First Successful Submission: 2026-02-22 16:41:28

The Flag File

Time of First Successful Submission: 2026-02-22 16:42:19

Using Privileged Mode

Time of First Successful Submission: 2026-02-22 16:44:36

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-22 16:45:49

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-22 16:46:31