gerboise

Intro to Cybersecurity

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File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-27 19:09:10

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-27 19:03:07

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-27 19:02:08

Reading Endianness (Python)

Time of First Successful Submission: 2026-04-02 16:05:09

Reading Endianness (C)

Time of First Successful Submission: 2026-04-02 16:02:58

Reading Endianness (x86)

Time of First Successful Submission: 2026-04-02 16:00:37

Version Information (Python)

Time of First Successful Submission: 2026-04-02 19:57:27

Version Information (C)

Time of First Successful Submission: 2026-04-02 19:52:21

Version Information (x86)

Time of First Successful Submission: 2026-04-02 19:03:24

Metadata and Data (Python)

Time of First Successful Submission: 2026-04-02 21:51:10

Metadata and Data (C)

Time of First Successful Submission: 2026-04-02 21:45:03

Metadata and Data (x86)

Time of First Successful Submission: 2026-04-02 21:35:14

Input Restrictions (Python)

Time of First Successful Submission: 2026-04-03 07:14:33

Input Restrictions (C)

Time of First Successful Submission: 2026-04-03 06:30:45

Input Restrictions (x86)

Time of First Successful Submission: 2026-04-03 06:28:04

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-04-03 17:39:58

Behold the cIMG! (C)

Time of First Successful Submission: 2026-04-03 17:36:35

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-04-03 16:19:35

A Basic cIMG (Python)

Time of First Successful Submission: 2026-04-03 21:11:40

A Basic cIMG (C)

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

A Basic cIMG (x86)

Time of First Successful Submission: 2026-04-03 20:59:41

Your First Overflow (easy)

Time of First Successful Submission: 2026-03-21 20:55:40

Your First Overflow (hard)

Time of First Successful Submission: 2026-03-21 20:58:44

Precision (easy)

Time of First Successful Submission: 2026-03-21 22:02:51

Precision (hard)

Time of First Successful Submission: 2026-03-21 22:06:03

Variable Control (easy)

Time of First Successful Submission: 2026-03-21 22:29:42

Variable Control (hard)

Time of First Successful Submission: 2026-03-21 22:22:30

Control Hijack (easy)

Time of First Successful Submission: 2026-03-21 22:55:13

Control Hijack (hard)

Time of First Successful Submission: 2026-03-21 23:07:23

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-03-21 23:44:12

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-03-22 00:06:42

PIEs (easy)

Time of First Successful Submission: 2026-03-22 08:15:40

PIEs (hard)

Time of First Successful Submission: 2026-03-22 08:20:40

String Lengths (easy)

Time of First Successful Submission: 2026-03-22 21:55:10

String Lengths (hard)

Time of First Successful Submission: 2026-03-22 21:29:29

Basic Shellcode

Time of First Successful Submission: 2026-03-25 22:42:49

NOP Sleds

Time of First Successful Submission: 2026-03-25 22:52:12

NULL-Free Shellcode

Time of First Successful Submission: 2026-03-25 22:55:34

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2026-03-27 14:48:37

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2026-03-27 14:41:26

Hijack to Shellcode (easy)

Time of First Successful Submission: 2026-03-27 18:47:38

Hijack to Shellcode (hard)

Time of First Successful Submission: 2026-03-27 17:36:56


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-03-21 20:17:41

Using the VSCode Workspace

Time of First Successful Submission: 2026-03-21 20:21:47

Using the GUI Desktop

Time of First Successful Submission: 2026-03-21 20:27:48

Pasting into the Desktop

Time of First Successful Submission: 2026-03-21 20:29:47

Restarting Challenges

Time of First Successful Submission: 2026-03-21 20:38:56

Challenge Programs

Time of First Successful Submission: 2026-03-21 20:03:07

The Flag File

Time of First Successful Submission: 2026-03-21 20:04:37

Using Privileged Mode

Time of First Successful Submission: 2026-03-21 20:09:30

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-21 20:14:48

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-21 20:15:36


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-03-21 20:17:41

Using the VSCode Workspace

Time of First Successful Submission: 2026-03-21 20:21:47

Using the GUI Desktop

Time of First Successful Submission: 2026-03-21 20:27:48

Pasting into the Desktop

Time of First Successful Submission: 2026-03-21 20:29:47

Connecting over SSH

Time of First Successful Submission: 2026-03-21 20:32:57

Restarting Challenges

Time of First Successful Submission: 2026-03-21 20:38:56

Getting Help

Time of First Successful Submission: 2026-03-21 20:41:59

Challenge Programs

Time of First Successful Submission: 2026-03-21 20:03:07

The Flag File

Time of First Successful Submission: 2026-03-21 20:04:37

Using Privileged Mode

Time of First Successful Submission: 2026-03-21 20:09:30

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-21 20:14:48

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-21 20:15:36