一个注入winlogon的程序的代码，学习API用

 

Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function ReadProcessMemory Lib "kernel32" (ByVal hProcess As Long, ByVal lpBaseAddress As Long, lpBuffer As Any, ByVal nSize As Long, _
lpNumberOfBytesWritten As Long) As Long
Private Declare Function WriteProcessMemory Lib "kernel32" (ByVal hProcess As Long, ByVal lpBaseAddress As Long, lpBuffer As Any, ByVal nSize As Long, _
lpNumberOfBytesWritten As Long) As Long

Private Declare Function GlobalAddAtom Lib "kernel32" Alias "GlobalAddAtomW" (ByVal lpString As Long) As Integer
Private Declare Function GlobalDeleteAtom Lib "kernel32" (ByVal nAtom As Integer) As Integer
Private Declare Function GlobalFindAtom Lib "kernel32" Alias "GlobalFindAtomW" (ByVal lpString As Long) As Integer

Private Const TH32CS_SNAPPROCESS = 2
Private Type PROCESSENTRY32W
dwSize As Long
cntUsage As Long
h32ProcessID As Long ' // this process
th32DefaultHeapID As Long '
h32ModuleID As Long ' // associated exe
cntThreads As Long '
th32ParentProcessID As Long ' // this process's parent process
pcPriClassBase As Long ' // Base priority of process's threads
dwFlags As Long '
szExeFile(1 To 260) As Integer ' // Path
End Type
Private Declare Function CreateToolhelp32Snapshot Lib "kernel32" (ByVal dwFlags As Long, ByVal th32ProcessID As Long) As Long
Private Declare Function Process32First Lib "kernel32" Alias "Process32FirstW" (ByVal hSnapshot As Long, lpPE As PROCESSENTRY32W) As Long
Private Declare Function Process32Next Lib "kernel32" Alias "Process32NextW" (ByVal hSnapshot As Long, lpPE As PROCESSENTRY32W) As Long
Private Declare Function lstrcmpi Lib "kernel32" Alias "lstrcmpiW" (lpString1 As Integer, ByVal lpString2 As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long

Private Type LUID
lowpart As Long
highpart As Long
End Type
Private Type LUID_AND_ATTRIBUTES
pLuid As LUID
Attributes As Long
End Type
Private Type TOKEN_PRIVILEGES
PrivilegeCount As Long
Privileges As LUID_AND_ATTRIBUTES
End Type
Private Const PROCESS_ALL_ACCESS As Long = &H1F0FFF
Private Const TOKEN_QUERY As Long = &H8&
Private Const TOKEN_ADJUST_PRIVILEGES As Long = &H20&
Private Const SE_PRIVILEGE_ENABLED As Long = &H2
Private Const SE_DEBUG_NAME As String = "SeDebugPrivilege"
Private Declare Function GetCurrentProcess Lib "kernel32" () As Long
Private Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long
Private Declare Function LookupPrivilegeValue Lib "advapi32.dll" Alias "LookupPrivilegeValueW" (ByVal lpSystemName As Long, ByVal lpName As Long, lpLuid As LUID) As Long
Private Declare Function AdjustTokenPrivileges Lib "advapi32.dll" (ByVal TokenHandle As Long, ByVal DisableAllPrivileges As Long, NewState As TOKEN_PRIVILEGES, _
ByVal BufferLength As Long, ByVal PrevState As Long, ByVal N As Long) As Long
Private Declare Function LoadLibrary Lib "kernel32" Alias "LoadLibraryW" (ByVal lpLibFileName As Long) As Long
Private Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As Long, ByVal lpProcName As String) As Long
Private Declare Function FreeLibrary Lib "kernel32" (ByVal hLibModule As Long) As Long

Private Const MEM_COMMIT As Long = &H1000
Private Const MEM_DECOMMIT As Long = &H4000
Private Const PAGE_READWRITE As Long = 4
Private Declare Function VirtualAllocEx Lib "kernel32" (ByVal ProcessHandle As Long, ByVal lpAddress As Long, ByVal dwSize As Long, _
ByVal flAllocationType As Long, ByVal flProtect As Long) As Long
Private Declare Function VirtualFreeEx Lib