'link/security' 카테고리의 글 목록

2022. 9. 2. 18:45

NtCreateToken

2022. 9. 2. 18:45 in link/security

NtCreateToken

Return Codes

STATUS_SUCCESS - Indicates the operation was successful.
STATUS_INVALID_OWNER - Indicates the ID provided to be assigned
as the default owner of the token does not have an attribute
indicating it may be assigned as an owner.
STATUS_INVALID_PRIMARY_GROUP - Indicates the group ID provided
via the PrimaryGroup parameter was not among those assigned
to the token in the Groups parameter.
STATUS_BAD_IMPERSONATION_LEVEL - Indicates no impersonation level
was provided when attempting to create a token of type
TokenImpersonation.

createprocess-windows

Posted by cobaltic5

2021. 2. 15. 18:28

Access Tokens

2021. 2. 15. 18:28 in link/security

Introduction to Windows tokens for security practitioners

Posted by cobaltic5

2021. 2. 2. 18:59

Token modification

2021. 2. 2. 18:59 in link/security

Abusing Token Privileges For LPE

Abusing Token Privileges For LPE EDB-ID: 42556 CVE: N/A Date: 2017-08-28

www.exploit-db.com

creating-windows-access-tokens

GitHub - decoder-it/CreateTokenExample

Creating Windows Access Tokens

Some time ago I was playing with the STOPZilla exploit which is very interesting and educational because it shows how you can abuse from an arbitrary write from the userland into the kernel. In thi…

decoder.cloud

GUI-Based-RunAsEx

GUI-Based RunAsEx

An ultimate tool that lets you RunAs... (With support for non-Pwd, WTS, fake privilege, fake user groups, etc...)

www.codeproject.com

Understanding Windows Access Token Manipulation

Finding alternatives to winlogon.exe to steal SYSTEM access tokens from. Presented at HushCon 2019

www.slideshare.net

Understanding and Defending Against Access Token Theft

Understanding and Defending Against Access Token Theft: Finding Alternatives to winlogon.exe

A dive into Windows processes, access tokens, SACLs, WinAPI and access token manipulation.

posts.specterops.io

Social Engineering the Windows Kernel by James Forshaw

One successful technique in social engineering is pretending to be someone or something you're not and hoping the security guard who's forgotten their reading …

www.slideshare.net

Stealing Tokens In Kernel Mode With A Malicious Driver

Stealing Tokens In Kernel Mode With A Malicious Driver - SolomonSklash.io

Stealing Tokens In Kernel Mode With A Malicious Driver Introduction I’ve recently been working on expanding my knowledge of Windows kernel concepts and kernel mode programming. In the process, I wrote a malicious driver that could steal the token of one

www.solomonsklash.io

Token Abuse for Privilege Escalation in Kernel

www.ired.team

Posted by cobaltic5

2019. 2. 19. 19:37

How to Check Access Rights

2019. 2. 19. 19:37 in link/security

How to Check Access Rights of files

You can apply this logic by using GetNamedSecurityInfo function to another object type.

Posted by cobaltic5

2016. 5. 26. 17:54

SubInACL

2016. 5. 26. 17:54 in link/security

SubInACL

SubInACL is a command-line tool that enables administrators to obtain security information about files, registry keys, and services, and transfer this information from user to user, from local or global group to group, and from domain to domain.

Posted by cobaltic5

2013. 10. 22. 19:45

How to determine physical machine

2013. 10. 22. 19:45 in link/security

Using system manufacture name
CMD : SYSTEMINFO
WMI 
http://msdn.microsoft.com/en-us/library/windows/desktop/aa389762%28v=vs.85%29.aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/aa390418%28v=vs.85%29.aspx
Registry
http://www.rohitab.com/discuss/topic/35915-win32-api-to-get-system-information/

#include <windows.h>
#include <commctrl.h>
#include <shlwapi.h>
 
 
UINT GetComputerManufacturer(LPSTR lpBuffer, UINT uSize)
{
    HKEY   hkData;
    HANDLE hHeap;
    LPSTR  lpString = NULL;
    LPBYTE lpData   = NULL;
    DWORD  dwType = 0, dwSize = 0;
    UINT   uIndex, uStart, uEnd, uString, uLength, uState = 0;
    LONG   lErr;
     
    if((lErr = RegOpenKeyEx(HKEY_LOCAL_MACHINE, TEXT("SYSTEM\\CurrentControlSet\\Services\\mssmbios\\Data"),
        0, KEY_QUERY_VALUE, &hkData)) != ERROR_SUCCESS){
        SetLastError(lErr);
        return 0;
    }
    if((lErr = RegQueryValueEx(hkData, TEXT("SMBiosData"), NULL, &dwType, NULL, &dwSize)) == ERROR_SUCCESS){
        if(dwSize == 0 || dwType != REG_BINARY) lErr = ERROR_BADKEY;
        else{
            hHeap = GetProcessHeap();
            lpData = (LPBYTE)HeapAlloc(hHeap, 0, dwSize);
            if(!lpData) lErr = ERROR_NOT_ENOUGH_MEMORY;
            else lErr = RegQueryValueEx(hkData, TEXT("SMBiosData"), 
                NULL, NULL, lpData, &dwSize);
        }
    }
    RegCloseKey(hkData);
     
    if(lErr == ERROR_SUCCESS){
        uIndex  = 8 + *(WORD *)(lpData + 6);
        uEnd    = 8 + *(WORD *)(lpData + 4);
        while(lpData[uIndex] != 0x7F && uIndex < uEnd){
            uIndex += lpData[(uStart = uIndex) + 1];
            uString = 1;
            do{
                if(lpData[uStart] == 0x01 && uState == 0){
                    if( lpData[uStart + 4] == uString ||
                        lpData[uStart + 5] == uString || 
                        lpData[uStart + 6] == uString){
                        lpString = (LPSTR)(lpData + uIndex);
                        if(!StrCmpI(lpString, "System manufacturer")){
                            lpString = NULL;
                            uState++;
                        }
                    }
                     
                }else if(lpData[uStart] == 0x02 && uState == 1){
                    if( lpData[uStart + 4] == uString ||
                        lpData[uStart + 5] == uString || 
                        lpData[uStart + 6] == uString)
                        lpString = (LPSTR)(lpData + uIndex);
                     
                }else if(lpData[uStart] == 0x03 && uString == 1){
                    switch(lpData[uStart + 5])
                    {
                        default:   lpString = "(Other)";               break;
                        case 0x02: lpString = "(Unknown)";             break;
                        case 0x03: lpString = "(Desktop)";             break;
                        case 0x04: lpString = "(Low Profile Desktop)"; break;
                        case 0x06: lpString = "(Mini Tower)";          break;
                        case 0x07: lpString = "(Tower)";               break;
                        case 0x08: lpString = "(Portable)";            break;
                        case 0x09: lpString = "(Laptop)";              break;
                        case 0x0A: lpString = "(Notebook)";            break;
                        case 0x0E: lpString = "(Sub Notebook)";        break;
                    }
                     
                }
                if(lpString != NULL){
                    uLength = strlen(lpString) + 1;
                    if(uSize > uLength + 1)
                        lpBuffer += wsprintf(lpBuffer, "%s ", lpString);
                    uSize -= uLength;
                    lpString = NULL;
                }
                uString++;
                while(lpData[uIndex++]);
            }while(lpData[uIndex] && uIndex < uEnd);
            uIndex++;
        }
    }
     
    if(lpData)
        HeapFree(hHeap, 0, lpData);
    SetLastError(lErr);
 
    return uSize;
}
 
int APIENTRY WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpCmdLine, int nShowCmd)
{
    TCHAR szBuffer[128];
    szBuffer[0] = 0;
     
    InitCommonControls();
     
    if(GetComputerManufacturer(szBuffer, 128) < 0)
        wsprintf(szBuffer, "Failed: %d", GetLastError());
 
    MessageBox(HWND_DESKTOP, szBuffer, TEXT("Manufacturer"), MB_OK);
     
    return 0;
}

Posted by cobaltic5

2013. 10. 4. 17:19

Enable empty password runAs

2013. 10. 4. 17:19 in link/security

http://superuser.com/questions/342680/enable-password-blank-run-as-on-home-premium

How to Enable Remote Login via Blank Passwords using Local Security Policy or Group Policy Editor

Security Policies -> Local Securities -> Security Options (for user using Group Policy Editor or GPEdit.msc, expand Local Computer Policy -> Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options). Locate Accounts: Limit local account use of blank passwords to console logon only policy, and set its value to Disabled.