Joan E.S
Joan Esteban

Joan Esteban

3 followers

Hi I am Joan Esteban Santaeularia a Cybersecurity Engineer. Currently focusing in Web3 security and reverse engineering. I am also a music producer focused on Techno and House.

2023-09-popcorn

Nov 17, 20233 min read

[M-19] Owner can collect management fees with a new increased fee for previous time period. Submitted by GreedyGoblin (me)*, also found by...

2023-09-popcorn

Reversing an .HTA File - 1

Nov 16, 20236 min read

We have recently received a URL inside of an email that redirected to a page that downloaded a zip file. Inside this zip file there was a .HTA...

Reversing an .HTA File - 1

Basic Windows AV Bypass - Part 5 - Embed and Execute the Shellcode

Jun 16, 20236 min read

Now we can finally start coding our trojan. The malware we are going to use for testing is a reverse TCP shell from Metasploit. Before coding the...

Basic Windows AV Bypass - Part 5 - Embed and Execute the Shellcode

Basic Windows AV Bypass - Part 4 - Malware Format

Jun 16, 20234 min read

Now that we have the development and testing environments set up we can start designing and implementing our trojan. The first question to answer is...

Basic Windows AV Bypass - Part 4 - Malware Format

Basic Windows AV Bypass - Part 3 - Preparing the testing and development environments

Jun 15, 20234 min read

Before starting, we need to set up the testing environment and the development environment. The Static Analysis will be tested with an online service...

Basic Windows AV Bypass - Part 3 - Preparing the testing and development environments

Basic Windows AV Bypass - Part 2 - AVs and EDRs

Jun 15, 20236 min read

An AV (Anti Virus) is a piece of software that analyses files and monitors the OS (Operative System) status to detect malware. AVs can also analyze...

Basic Windows AV Bypass - Part 2 - AVs and EDRs