My name is Joakim Pettersen, aka "Gelven", and I'm a Security professional.

I write about stuff that I like, which could be :

• Malware development technique
• Cybersecurity software development
• Reverse engineering
• CTF writeups
• Actually anything that comes to my mind

• NotPetyaAgain: PoC of a UEFI Petya ransomware
• Rust MalDev course: Course about malware development in Rust
• LNKat: Windows Shortcut parser and generator (WIP)

• OSCP by Offsec
• OSWP by Offsec

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1. NotPetyaAgainNotPetyaAgainPublic archive

   PoC of a UEFI Petya ransomware

   Rust 40 10

2. hacklab-esgi/LNKathacklab-esgi/LNKatPublic

   Windows Shortcut parser and generator (WIP)

   Python 3

3. NotPetyaAgain_DecryptorNotPetyaAgain_DecryptorPublic

   Web service to generate decryption key from NotPetyaAgain ransomware

   Rust 6

4. nanosploitnanosploitPublic

   Minimalist C2 server for educational purpose.

   Python 1 2

5. ReverseShellGPGReverseShellGPGPublic

   A reverse shell utility with GPG encrypted communication.

   Python 2

6. ShellcodeGeneratorShellcodeGeneratorPublic

   Polymorphic Shellcode generator

   Python