diff --git a/windows/security_windows.go b/windows/security_windows.go
index da06406..2ba1a31 100644
--- a/windows/security_windows.go
+++ b/windows/security_windows.go
@@ -502,6 +502,53 @@
 	MaxTokenInfoClass
 )
 
+// Group attributes inside of Tokengroups.Groups[i].Attributes
+const (
+	SE_GROUP_MANDATORY          = 0x00000001
+	SE_GROUP_ENABLED_BY_DEFAULT = 0x00000002
+	SE_GROUP_ENABLED            = 0x00000004
+	SE_GROUP_OWNER              = 0x00000008
+	SE_GROUP_USE_FOR_DENY_ONLY  = 0x00000010
+	SE_GROUP_INTEGRITY          = 0x00000020
+	SE_GROUP_INTEGRITY_ENABLED  = 0x00000040
+	SE_GROUP_LOGON_ID           = 0xC0000000
+	SE_GROUP_RESOURCE           = 0x20000000
+	SE_GROUP_VALID_ATTRIBUTES   = SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED | SE_GROUP_OWNER | SE_GROUP_USE_FOR_DENY_ONLY | SE_GROUP_LOGON_ID | SE_GROUP_RESOURCE | SE_GROUP_INTEGRITY | SE_GROUP_INTEGRITY_ENABLED
+)
+
+// Privilege attributes
+const (
+	SE_PRIVILEGE_ENABLED_BY_DEFAULT = 0x00000001
+	SE_PRIVILEGE_ENABLED            = 0x00000002
+	SE_PRIVILEGE_REMOVED            = 0x00000004
+	SE_PRIVILEGE_USED_FOR_ACCESS    = 0x80000000
+	SE_PRIVILEGE_VALID_ATTRIBUTES   = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED | SE_PRIVILEGE_REMOVED | SE_PRIVILEGE_USED_FOR_ACCESS
+)
+
+// Token types
+const (
+	TokenPrimary       = 1
+	TokenImpersonation = 2
+)
+
+// Impersonation levels
+const (
+	SecurityAnonymous      = 0
+	SecurityIdentification = 1
+	SecurityImpersonation  = 2
+	SecurityDelegation     = 3
+)
+
+type LUID struct {
+	LowPart  uint32
+	HighPart int32
+}
+
+type LUIDAndAttributes struct {
+	Luid       LUID
+	Attributes uint32
+}
+
 type SIDAndAttributes struct {
 	Sid        *SID
 	Attributes uint32
@@ -520,10 +567,33 @@
 	Groups     [1]SIDAndAttributes
 }
 
+type Tokenprivileges struct {
+	PrivilegeCount uint32
+	Privileges     [1]LUIDAndAttributes
+}
+
+type Tokenmandatorylabel struct {
+	Label SIDAndAttributes
+}
+
+func (tml *Tokenmandatorylabel) Size() uint32 {
+	return uint32(unsafe.Sizeof(Tokenmandatorylabel{})) + GetLengthSid(tml.Label.Sid)
+}
+
 // Authorization Functions
-//sys checkTokenMembership(tokenHandle Token, sidToCheck *SID, isMember *int32) (err error) = advapi32.CheckTokenMembership
-//sys	OpenProcessToken(h Handle, access uint32, token *Token) (err error) = advapi32.OpenProcessToken
-//sys	GetTokenInformation(t Token, infoClass uint32, info *byte, infoLen uint32, returnedLen *uint32) (err error) = advapi32.GetTokenInformation
+//sys	checkTokenMembership(tokenHandle Token, sidToCheck *SID, isMember *int32) (err error) = advapi32.CheckTokenMembership
+//sys	OpenProcessToken(process Handle, access uint32, token *Token) (err error) = advapi32.OpenProcessToken
+//sys	GetCurrentThreadToken() (token Token) = advapi32.GetCurrentThreadToken
+//sys	OpenThreadToken(thread Handle, access uint32, openAsSelf bool, token *Token) (err error) = advapi32.OpenThreadToken
+//sys	GetCurrentProcessToken() (token Token) = advapi32.GetCurrentProcessToken
+//sys	ImpersonateSelf(impersonationlevel uint32) (err error) = advapi32.ImpersonateSelf
+//sys	RevertToSelf() (err error) = advapi32.RevertToSelf
+//sys	SetThreadToken(thread *Handle, token Token) (err error) = advapi32.SetThreadToken
+//sys	LookupPrivilegeValue(systemname *uint16, name *uint16, luid *LUID) (err error) = advapi32.LookupPrivilegeValueW
+//sys	AdjustTokenPrivileges(token Token, disableAllPrivileges bool, newstate *Tokenprivileges, buflen uint32, prevstate *Tokenprivileges, returnlen *uint32) (err error) = advapi32.AdjustTokenPrivileges
+//sys	GetTokenInformation(token Token, infoClass uint32, info *byte, infoLen uint32, returnedLen *uint32) (err error) = advapi32.GetTokenInformation
+//sys	SetTokenInformation(token Token, infoClass uint32, info *byte, infoLen uint32) (err error) = advapi32.SetTokenInformation
+//sys	DuplicateTokenEx(existingToken Token, desiredAccess uint32, tokenAttributes *SecurityAttributes, impersonationLevel uint32, tokenType uint32, newToken *Token) (err error) = advapi32.DuplicateTokenEx
 //sys	GetUserProfileDirectory(t Token, dir *uint16, dirLen *uint32) (err error) = userenv.GetUserProfileDirectoryW
 //sys	getSystemDirectory(dir *uint16, dirLen uint32) (len uint32, err error) = kernel32.GetSystemDirectoryW
 
diff --git a/windows/syscall_windows.go b/windows/syscall_windows.go
index 1eb69a1..43a8057 100644
--- a/windows/syscall_windows.go
+++ b/windows/syscall_windows.go
@@ -171,6 +171,7 @@
 //sys	GetExitCodeProcess(handle Handle, exitcode *uint32) (err error)
 //sys	GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW
 //sys	GetCurrentProcess() (pseudoHandle Handle, err error)
+//sys	GetCurrentThread() (pseudoHandle Handle, err error)
 //sys	GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error)
 //sys	DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error)
 //sys	WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff]
diff --git a/windows/zsyscall_windows.go b/windows/zsyscall_windows.go
index 8bbd0cc..3344885 100644
--- a/windows/zsyscall_windows.go
+++ b/windows/zsyscall_windows.go
@@ -111,6 +111,7 @@
 	procGetExitCodeProcess                 = modkernel32.NewProc("GetExitCodeProcess")
 	procGetStartupInfoW                    = modkernel32.NewProc("GetStartupInfoW")
 	procGetCurrentProcess                  = modkernel32.NewProc("GetCurrentProcess")
+	procGetCurrentThread                   = modkernel32.NewProc("GetCurrentThread")
 	procGetProcessTimes                    = modkernel32.NewProc("GetProcessTimes")
 	procDuplicateHandle                    = modkernel32.NewProc("DuplicateHandle")
 	procWaitForSingleObject                = modkernel32.NewProc("WaitForSingleObject")
@@ -253,7 +254,17 @@
 	procEqualSid                           = modadvapi32.NewProc("EqualSid")
 	procCheckTokenMembership               = modadvapi32.NewProc("CheckTokenMembership")
 	procOpenProcessToken                   = modadvapi32.NewProc("OpenProcessToken")
+	procGetCurrentThreadToken              = modadvapi32.NewProc("GetCurrentThreadToken")
+	procOpenThreadToken                    = modadvapi32.NewProc("OpenThreadToken")
+	procGetCurrentProcessToken             = modadvapi32.NewProc("GetCurrentProcessToken")
+	procImpersonateSelf                    = modadvapi32.NewProc("ImpersonateSelf")
+	procRevertToSelf                       = modadvapi32.NewProc("RevertToSelf")
+	procSetThreadToken                     = modadvapi32.NewProc("SetThreadToken")
+	procLookupPrivilegeValueW              = modadvapi32.NewProc("LookupPrivilegeValueW")
+	procAdjustTokenPrivileges              = modadvapi32.NewProc("AdjustTokenPrivileges")
 	procGetTokenInformation                = modadvapi32.NewProc("GetTokenInformation")
+	procSetTokenInformation                = modadvapi32.NewProc("SetTokenInformation")
+	procDuplicateTokenEx                   = modadvapi32.NewProc("DuplicateTokenEx")
 	procGetUserProfileDirectoryW           = moduserenv.NewProc("GetUserProfileDirectoryW")
 	procGetSystemDirectoryW                = modkernel32.NewProc("GetSystemDirectoryW")
 )
@@ -1076,6 +1087,19 @@
 	return
 }
 
+func GetCurrentThread() (pseudoHandle Handle, err error) {
+	r0, _, e1 := syscall.Syscall(procGetCurrentThread.Addr(), 0, 0, 0, 0)
+	pseudoHandle = Handle(r0)
+	if pseudoHandle == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
 func GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error) {
 	r1, _, e1 := syscall.Syscall6(procGetProcessTimes.Addr(), 5, uintptr(handle), uintptr(unsafe.Pointer(creationTime)), uintptr(unsafe.Pointer(exitTime)), uintptr(unsafe.Pointer(kernelTime)), uintptr(unsafe.Pointer(userTime)), 0)
 	if r1 == 0 {
@@ -2729,8 +2753,8 @@
 	return
 }
 
-func OpenProcessToken(h Handle, access uint32, token *Token) (err error) {
-	r1, _, e1 := syscall.Syscall(procOpenProcessToken.Addr(), 3, uintptr(h), uintptr(access), uintptr(unsafe.Pointer(token)))
+func OpenProcessToken(process Handle, access uint32, token *Token) (err error) {
+	r1, _, e1 := syscall.Syscall(procOpenProcessToken.Addr(), 3, uintptr(process), uintptr(access), uintptr(unsafe.Pointer(token)))
 	if r1 == 0 {
 		if e1 != 0 {
 			err = errnoErr(e1)
@@ -2741,8 +2765,128 @@
 	return
 }
 
-func GetTokenInformation(t Token, infoClass uint32, info *byte, infoLen uint32, returnedLen *uint32) (err error) {
-	r1, _, e1 := syscall.Syscall6(procGetTokenInformation.Addr(), 5, uintptr(t), uintptr(infoClass), uintptr(unsafe.Pointer(info)), uintptr(infoLen), uintptr(unsafe.Pointer(returnedLen)), 0)
+func GetCurrentThreadToken() (token Token) {
+	r0, _, _ := syscall.Syscall(procGetCurrentThreadToken.Addr(), 0, 0, 0, 0)
+	token = Token(r0)
+	return
+}
+
+func OpenThreadToken(thread Handle, access uint32, openAsSelf bool, token *Token) (err error) {
+	var _p0 uint32
+	if openAsSelf {
+		_p0 = 1
+	} else {
+		_p0 = 0
+	}
+	r1, _, e1 := syscall.Syscall6(procOpenThreadToken.Addr(), 4, uintptr(thread), uintptr(access), uintptr(_p0), uintptr(unsafe.Pointer(token)), 0, 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func GetCurrentProcessToken() (token Token) {
+	r0, _, _ := syscall.Syscall(procGetCurrentProcessToken.Addr(), 0, 0, 0, 0)
+	token = Token(r0)
+	return
+}
+
+func ImpersonateSelf(impersonationlevel uint32) (err error) {
+	r1, _, e1 := syscall.Syscall(procImpersonateSelf.Addr(), 1, uintptr(impersonationlevel), 0, 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func RevertToSelf() (err error) {
+	r1, _, e1 := syscall.Syscall(procRevertToSelf.Addr(), 0, 0, 0, 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func SetThreadToken(thread *Handle, token Token) (err error) {
+	r1, _, e1 := syscall.Syscall(procSetThreadToken.Addr(), 2, uintptr(unsafe.Pointer(thread)), uintptr(token), 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func LookupPrivilegeValue(systemname *uint16, name *uint16, luid *LUID) (err error) {
+	r1, _, e1 := syscall.Syscall(procLookupPrivilegeValueW.Addr(), 3, uintptr(unsafe.Pointer(systemname)), uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(luid)))
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func AdjustTokenPrivileges(token Token, disableAllPrivileges bool, newstate *Tokenprivileges, buflen uint32, prevstate *Tokenprivileges, returnlen *uint32) (err error) {
+	var _p0 uint32
+	if disableAllPrivileges {
+		_p0 = 1
+	} else {
+		_p0 = 0
+	}
+	r1, _, e1 := syscall.Syscall6(procAdjustTokenPrivileges.Addr(), 6, uintptr(token), uintptr(_p0), uintptr(unsafe.Pointer(newstate)), uintptr(buflen), uintptr(unsafe.Pointer(prevstate)), uintptr(unsafe.Pointer(returnlen)))
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func GetTokenInformation(token Token, infoClass uint32, info *byte, infoLen uint32, returnedLen *uint32) (err error) {
+	r1, _, e1 := syscall.Syscall6(procGetTokenInformation.Addr(), 5, uintptr(token), uintptr(infoClass), uintptr(unsafe.Pointer(info)), uintptr(infoLen), uintptr(unsafe.Pointer(returnedLen)), 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func SetTokenInformation(token Token, infoClass uint32, info *byte, infoLen uint32) (err error) {
+	r1, _, e1 := syscall.Syscall6(procSetTokenInformation.Addr(), 4, uintptr(token), uintptr(infoClass), uintptr(unsafe.Pointer(info)), uintptr(infoLen), 0, 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func DuplicateTokenEx(existingToken Token, desiredAccess uint32, tokenAttributes *SecurityAttributes, impersonationLevel uint32, tokenType uint32, newToken *Token) (err error) {
+	r1, _, e1 := syscall.Syscall6(procDuplicateTokenEx.Addr(), 6, uintptr(existingToken), uintptr(desiredAccess), uintptr(unsafe.Pointer(tokenAttributes)), uintptr(impersonationLevel), uintptr(tokenType), uintptr(unsafe.Pointer(newToken)))
 	if r1 == 0 {
 		if e1 != 0 {
 			err = errnoErr(e1)