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从管理员身份获得 SYSTEM 权限的四种方法
从管理员身份获得 SYSTEM 权限的四种方法
作者: 一块三毛钱
邮件: zhongts@
日期: 2005.1.15
本文总结了 4 种方法获得 SYSTEM 权限来运行 regedit.exe 文件,源代码很容易修改成命令行方式运行指定的程序。
1. 以服务方式运行
2. 添加 ACL 的方法
3. HOOK ZwCreateProcessEx 函数
4. 远程线程的方法
这几种方法都不是我想出来的,我只不过是总结了一下,用 Win32ASM 重写了代码而以。关于这个大家可以看文章末尾的参考资料。下面简单的分析每一种方法。
1. 以服务方式运行
因为以服务方式运行程序时,相当于运行程序的是系统进程,所以,被指定运行的程序自然而然的继承了系统进程的权限,也就是 SYSTEM 权限。
;@echo off
;goto make
;====================================================================================
; 一块三毛钱
; http://zhongts.
; zhongts@
; 2005.1.15
;
; 以 SYSTEM 权限运行程序 - GetSys1
;
; 采用以服务方式运行的方法
;
;====================================================================================
.386
.model flat, stdcall
option casemap :none
include c:\masm32\include\windows.inc
include c:\masm32\include\kernel32.inc
include c:\masm32\include\advapi32.inc
include c:\masm32\include\masm32.inc
includelib c:\masm32\lib\kernel32.lib
includelib c:\masm32\lib\advapi32.lib
includelib c:\masm32\lib\masm32.lib
_ReLaunch proto
CTXT MACRO text
local lbl
.const
lbl db text,0
.code
exitm
<offset lbl>
ENDM
.code
start proc
LOCAL
stStartupInfo : STARTUPINFO
LOCAL
procinfo : PROCESS_INFORMATION
invoke
CreateMutex, NULL, TRUE, CTXT("GetSys1_Mutex")
invoke
GetLastError
.if eax==ERROR_ALREADY_EXISTS
invoke
RtlZeroMemory, addr stStartupInfo, sizeof stStartupInfo
mov
stStartupInfo.cb, sizeof stStartupInfo
invoke
CreateProcess, 0, CTXT("regedit.exe"), 0, 0, 0, 0, 0, 0, addr stStartupInfo, addr procinfo
invoke
CloseHandle, procinfo.hProcess
invoke
CloseHandle, procinfo.hThread
.else
invoke
_ReLaunch
.endif
invoke
ExitProcess, NULL
start endp
_ReLaunch proc
LOCAL
hSCManager
LOCAL
hService
LOCAL
szName[MAX_PATH] : byte
invoke
OpenSCManager, NULL, NULL, SC_MANAGER_CREATE_SERVICE
.if eax!=0
mov
hSCManager, eax
invoke
OpenService, hSCManager, CTXT("GetSys1Temp"), DELETE
.if eax!=0
push
eax
invoke
DeleteService, eax
call
CloseServiceHandle
.endif
invoke
GetModuleFileName, NULL, addr szName, MAX_PATH
invoke
CreateService, hSCManager, CTXT("GetSys1Temp"), CTXT("GetSys1 Temp Service"), \
SERVICE_START + SERVICE_QUERY_STATUS + DELETE, \
SERVICE_WIN32_OWN_PROCESS + SERVICE_INTERACTIVE_PROCESS, SERVICE_DEMAND_START, \
SERVICE_ERROR_IGNORE, addr szName, NULL, NULL, NULL, NULL, NULL
.if eax!=0
mov
hService, eax
invoke
StartService, hService, 0, NULL
invoke
DeleteService, hService
invoke
CloseServiceHandle, hService
.endif
invoke
CloseServiceHandle, hSCManager
.endif
ret
_ReLaunch endp
end start
:make
set path=%path%;c:\masm32\bin
set appname=GetSys1
ml /nologo /c /coff %appname%.bat
link /nologo /subsystem:windows %appname%.obj
del %appname%.obj
echo.
pause
GetSys1(第一次运行的这个进程 GetSys1 我们称为 A) 开始运行时先创建一个互斥量,接着以服务的方式重新启动自己(又一次运行的进程 GetSys1 我们称为 B),重新运行后的 B 已经具有了 SYSTEM 权限。B 再通过 CreateProcess 函数运行 regedit.exe 程序,因为 B 具有 SYSTEM 权限,所以 regedit.exe 从中继承了 SYSTEM 权限。运行完了 regedit.exe 后 B 结束运行,然后 A 中的 StartService 函数返回,A 结束运行。就是因为 StartService 函数不会直接返回,所以不能够直接通过服务的方式运行 regedit.exe。
2. 添加 ACL 的方法
主要思想是调用 CreateProcessAsUser 函数来运行程序,CreateProcessAsUser 函数的第一个参数是特定用户的令牌,把这个参数设为具有 SYSTEM 权限的令牌即可。
;@echo off
;goto make
;====================================================================================
; 一块三毛钱
; http://zhongts.
; zhongts@
; 2005.1.15
;
; 以 SYSTEM 权限运行程序 - GetSys2
;
; 采用添加 ACL 的方法
;
;====================================================================================
.386
.model flat, stdcall
option casemap :none
include c:\masm32\include\windows.inc
include c:\masm32\include\kernel32.inc
include c:\masm32\include\advapi32.inc
include c:\masm32\include\accctrl.inc
include c:\masm32\include\masm32.inc
includelib c:\masm32\lib\kernel32.lib
includelib c:\masm32\lib\advapi32.lib
includelib c:\masm32\lib\masm32.lib
_EnablePrivilege proto :DWORD,:DWORD
_GetPidFromProcName proto :DWORD
_ModifySecurity proto :DWORD,:DWORD
CTXT MACRO text
local lbl
.const
lbl db text,0
.code
exitm
<offset lbl>
ENDM
ACL STRUCT
AclRevision
BYTE
?
Sbz1
BYTE
?
AclSize
WORD
?
AceCount
WORD
?
Sbz2
WORD
?
ACL ENDS
PACL typedef PTR ACL
SecurityImpersonation
equ 2
.code
start proc
LOCAL
hProc
LOCAL
hToken, hNewToken
LOCAL
stStartupInfo : STARTUPINFO
LOCAL
procinfo : PROCESS_INFORMATION
sub
eax, eax
mov
hProc, eax
mov
hToken, eax
mov
hNewToken, eax
invoke
RtlZeroMemory, addr stStartupInfo, sizeof stStartupInfo
invoke
RtlZeroMemory, addr procinfo, sizeof procinfo
invoke
_EnablePrivilege, CTXT("SeDebugPrivilege"), TRUE
invoke
_GetPidFromProcName, CTXT("lsass.exe")
invoke
OpenProcess, PROCESS_QUERY_INFORMATION, 0, eax
test
eax, eax
jz
_exit
mov
hProc, eax
invoke
OpenProcessToken, hProc, READ_CONTROL+WRITE_DAC, addr hToken
test
eax, eax
jz
_exit
invoke
_ModifySecurity, hToken, TOKEN_ALL_ACCESS
test
eax, eax
jz
_exit
invoke
CloseHandle, hToken
mov
hToken, 0
invoke
OpenProcessToken, hProc, TOKEN_ALL_ACCESS, addr hToken
test
eax, eax
jz
_exit
invoke
DuplicateTokenEx, hToken, TOKEN_ALL_ACCESS, 0, SecurityImpersonation, TokenPrimary, addr hNewToken
test
eax, eax
jz
_exit
invoke
ImpersonateLoggedOnUser, hNewToken
test
eax, eax
jz
_exit
mov
stStartupInfo.cb, sizeof stStartupInfo
invoke
CreateProcessAsUser, hNewToken, 0, CTXT("regedit.exe"), 0, 0, 0, 0, 0, 0, addr stStartupInfo, addr procinfo
test
eax, eax
jz
_exit
invoke
CloseHandle, procinfo.hProcess
invoke
CloseHandle, procinfo.hThread
_exit:
.if hProc
invoke
CloseHandle, hProc
.endif
.if hToken
invoke
CloseHandle, hToken
.endif
.if hNewToken
invoke
CloseHandle, hNewToken
.endif
invoke
ExitProcess, NULL
start endp
_ModifySecurity proc uses ebx esi edi, hToken:DWORD, dwAccess:DWORD
LOCAL
pSD, pAbsSD
LOCAL
dwSDLength
LOCAL
bDaclPresent, bDaclDefaulted
LOCAL
pAcl : PACL
LOCAL
pNewAcl : PACL
LOCAL
szName[1024] : BYTE
LOCAL
ea : EXPLICIT_ACCESS
LOCAL
pSacl, pOwner, pPrimaryGroup
LOCAL
dwAclSize, dwSaclSize, dwOwnerSize, dwPrimaryGroup
LOCAL
bSuccess
sub
eax, eax
mov
pSD, eax
mov
pAbsSD, eax
mov
dwSDLength, eax
mov
bDaclPresent, eax
mov
bDaclDefaulted, eax
mov
pAcl, eax
mov
pNewAcl, eax
mov
pSacl, eax
mov
pOwner, eax
mov
pPrimaryGroup, eax
mov
dwAclSize, eax
mov
dwSaclSize, eax
mov
dwOwnerSize, eax
mov
dwPrimaryGroup, eax
mov
bSuccess, eax
invoke
GetKernelObjectSecurity, hToken, DACL_SECURITY_INFORMATION, pSD, 0, addr dwSDLength
invoke
LocalAlloc, LPTR, dwSDLength
test
eax, eax
jz
_exit
mov
pSD, eax
invoke
GetKernelObjectSecurity, hToken, DACL_SECURITY_INFORMATION, pSD, dwSDLength, addr dwSDLength
invoke
GetSecurityDescriptorDacl, pSD, addr bDaclPresent, addr pAcl, addr bDaclDefaulted
mov
eax, sizeof szName
push
eax
invoke
GetUserName, addr szName, esp
pop
eax
invoke
BuildExplicitAccessWithName, addr ea, addr szName, dwAccess, GRANT_ACCESS, FALSE
invoke
SetEntriesInAcl, 1, addr ea, pAcl, addr pNewAcl
cmp
eax, ERROR_SUCCESS
jne
_exit
invoke
LocalFree, pAcl
mov
pAcl, 0
invoke
MakeAbsoluteSD, pSD, pAbsSD, addr dwSDLength, pAcl, addr dwAclSize, pSacl, addr dwSaclSize, \
pOwner, addr dwOwnerSize, pPrimaryGroup, addr dwPrimaryGroup
invoke
LocalAlloc, LPTR, dwSDLength
test
eax, eax
jz
_exit
mov
pAbsSD, eax
invoke
LocalAlloc, LPTR, dwAclSize
test
eax, eax
jz
_exit
mov
pAcl, eax
invoke
LocalAlloc, LPTR, dwSaclSize
test
eax, eax
jz
_exit
mov
pSacl, eax
invoke
LocalAlloc, LPTR, dwOwnerSize
test
eax, eax
jz
_exit
mov
pOwner, eax
invoke
LocalAlloc, LPTR, dwPrimaryGroup
test
eax, eax
jz
_exit
mov
pPrimaryGroup, eax
invoke
MakeAbsoluteSD, pSD, pAbsSD, addr dwSDLength, pAcl, addr dwAclSize, pSacl, addr dwSaclSize, \
pOwner, addr dwOwnerSize, pPrimaryGroup, addr dwPrimaryGroup
invoke
SetSecurityDescriptorDacl, pAbsSD, bDaclPresent, pNewAcl, bDaclDefaulted
invoke
SetKernelObjectSecurity, hToken, DACL_SECURITY_INFORMATION, pAbsSD
mov
bSuccess, 1
_exit:
.if pSD
invoke
LocalFree, pSD
.endif
.if pAcl
invoke
LocalFree, pAcl
.endif
.if pNewAcl
invoke
LocalFree, pNewAcl
.endif
.if pAbsSD
invoke
LocalFree, pAbsSD
.endif
.if pSacl
invoke
LocalFree, pSacl
.endif
.if pOwner
invoke
LocalFree, pOwner
.endif
.if pPrimaryGroup
invoke
LocalFree, pPrimaryGroup
.endif
mov
eax, bSuccess
ret
_ModifySecurity endp
_EnablePrivilege proc szPriv:DWORD, bFlags:DWORD
LOCAL
hToken
LOCAL
tkp : TOKEN_PRIVILEGES
invoke
GetCurrentProcess
mov
edx, eax
invoke
OpenProcessToken, edx, TOKEN_ADJUST_PRIVILEGES or TOKEN_QUERY, addr hToken
invoke
LookupPrivilegeValue, NULL, szPriv, addr tkp.Privileges.Luid
mov
tkp.PrivilegeCount, 1
xor
eax, eax
.if bFlags
mov
eax, SE_PRIVILEGE_ENABLED
.endif
mov
tkp.Privileges.Attributes, eax
invoke
AdjustTokenPrivileges, hToken, FALSE, addr tkp, 0, 0, 0
push
eax
invoke
CloseHandle, hToken
pop
eax
ret
_EnablePrivilege endp
_GetPidFromProcName proc lpProcName:DWORD
LOCAL
stProcess : PROCESSENTRY32
LOCAL
hSnapshot
LOCAL
dwProcessID
mov
dwProcessID, 0
invoke
RtlZeroMemory, addr stProcess, sizeof stProcess
mov
stProcess.dwSize, sizeof stProcess
invoke
CreateToolhelp32Snapshot, TH32CS_SNAPPROCESS, 0
mov
hSnapshot, eax
invoke
Process32First, hSnapshot, addr stProcess
.while eax
invoke
lstrcmpi, lpProcName, addr stProcess.szExeFile
.if eax==0
mov
eax, stProcess.th32ProcessID
mov
dwProcessID, eax
.break
.endif
invoke
Process32Next, hSnapshot, addr stProcess
.endw
invoke
CloseHandle, hSnapshot
mov
eax, dwProcessID
ret
_GetPidFromProcName endp
end start
:make
set path=%path%;c:\masm32\bin
set appname=GetSys2
ml /nologo /c /coff %appname%.bat
link /nologo /subsystem:windows %appname%.obj
del %appname%.obj
echo.
pause
GetSys2 取得 lsass.exe 进程的令牌,缺省情况下操作这个令牌的权限很小,所以需要先取得操作这个令牌的所有权限。这个任务由函数 _ModifySecurity 来完成。有了权限后,复制一个主令牌,然后在当前线程中扮演 SYSTEM 用户,接着就可以调用 CreateProcessAsUser 函数运行 regedit.exe 程序了。有关安全性编程不清楚的地方可以参考[3]。
3. HOOK ZwCreateProcessEx 函数
有关这个[1]里面讲得很清楚了,下面直接给出源代码。
;@echo off
;goto make
;====================================================================================
; 一块三毛钱
; http://zhongts.
; zhongts@
; 2005.1.15
;
; 以 SYSTEM 权限运行程序 - GetSys3
;
; 采用 HOOK ZwCreateProcessEx 函数的方法
;
;====================================================================================
.386
.model flat, stdcall
option casemap :none
include c:\masm32\include\windows.inc
include c:\masm32\include\kernel32.inc
include c:\masm32\include\advapi32.inc
include c:\masm32\include\masm32.inc
includelib c:\masm32\lib\kernel32.lib
includelib c:\masm32\lib\advapi32.lib
includelib c:\masm32\lib\masm32.lib
_EnablePrivilege proto :DWORD,:DWORD
_GetPidFromProcName proto :DWORD
_HackedZwCreateProcessEx proto
CTXT MACRO text
local lbl
.const
lbl db text,0
.code
exitm
<offset lbl>
ENDM
ASMJMP struct
mov_eax
BYTE
?
address
DWORD
?
jmp_eax
WORD
?
ASMJMP ends
.data?
g_hProc dd
?
g_dwFunc
dd
?
.code
start proc
LOCAL
osvi : OSVERSIONINFO
LOCAL
lpAsmJmp
LOCAL
mbi : MEMORY_BASIC_INFORMATION
LOCAL
stStartupInfo : STARTUPINFO
LOCAL
procinfo : PROCESS_INFORMATION
sub
eax, eax
mov
lpAsmJmp, eax
invoke
RtlZeroMemory, addr osvi, sizeof osvi
invoke
RtlZeroMemory, addr mbi, sizeof mbi
invoke
RtlZeroMemory, addr stStartupInfo, sizeof stStartupInfo
invoke
RtlZeroMemory, addr procinfo, sizeof procinfo
mov
osvi.dwOSVersionInfoSize, sizeof osvi
invoke
GetVersionEx, addr osvi
cmp
osvi.dwMajorVersion, 5
jnz
_exit
.if osvi.dwMinorVersion==1
mov
g_dwFunc, 30h
.elseif osvi.dwMinorVersion==2
mov
g_dwFunc, 32h
.endif
invoke
_EnablePrivilege, CTXT("SeDebugPrivilege"), TRUE
invoke
_GetPidFromProcName, CTXT("lsass.exe")
test
eax, eax
jz
_exit
invoke
OpenProcess, PROCESS_CREATE_PROCESS, TRUE, eax
test
eax, eax
jz
_exit
mov
g_hProc, eax
invoke
GetModuleHandle, CTXT("ntdll.dll")
mov
edx, eax
invoke
GetProcAddress, edx, CTXT("ZwCreateProcessEx")
mov
lpAsmJmp, eax
invoke
VirtualQuery, lpAsmJmp, addr mbi, sizeof mbi
push
eax
invoke
VirtualProtect, mbi.AllocationBase, mbi.RegionSize, PAGE_EXECUTE_READWRITE, esp
pop
eax
mov
edi, lpAsmJmp
assume
edi : ptr ASMJMP
mov
[edi].mov_eax, 0B8h
mov
[edi].address, offset _HackedZwCreateProcessEx
mov
[edi].jmp_eax, 0E0FFh
mov
stStartupInfo.cb, sizeof stStartupInfo
invoke
CreateProcess, 0, CTXT("regedit.exe"), 0, 0, 0, 0, 0, 0, addr stStartupInfo, addr procinfo
test
eax, eax
jz
_exit
invoke
CloseHandle, procinfo.hProcess
invoke
CloseHandle, procinfo.hThread
_exit:
invoke
ExitProcess, NULL
start endp
_HackedZwCreateProcessEx proc
mov
eax, g_hProc
mov
dword ptr [esp+16], eax
mov
eax, g_dwFunc
lea
edx, dword ptr [esp+4]
int
2Eh
retn
24h
_HackedZwCreateProcessEx endp
_EnablePrivilege proc szPriv:DWORD, bFlags:DWORD
LOCAL
hToken
LOCAL
tkp : TOKEN_PRIVILEGES
invoke
GetCurrentProcess
mov
edx, eax
invoke
OpenProcessToken, edx, TOKEN_ADJUST_PRIVILEGES or TOKEN_QUERY, addr hToken
invoke
LookupPrivilegeValue, NULL, szPriv, addr tkp.Privileges.Luid
mov
tkp.PrivilegeCount, 1
xor
eax, eax
.if bFlags
mov
eax, SE_PRIVILEGE_ENABLED
.endif
mov
tkp.Privileges.Attributes, eax
invoke
AdjustTokenPrivileges, hToken, FALSE, addr tkp, 0, 0, 0
push
eax
invoke
CloseHandle, hToken
pop
eax
ret
_EnablePrivilege endp
_GetPidFromProcName proc lpProcName:DWORD
LOCAL
stProcess : PROCESSENTRY32
LOCAL
hSnapshot
LOCAL
dwProcessID
mov
dwProcessID, 0
invoke
RtlZeroMemory, addr stProcess, sizeof stProcess
mov
stProcess.dwSize, sizeof stProcess
invoke
CreateToolhelp32Snapshot, TH32CS_SNAPPROCESS, 0
mov
hSnapshot, eax
invoke
Process32First, hSnapshot, addr stProcess
.while eax
invoke
lstrcmpi, lpProcName, addr stProcess.szExeFile
.if eax==0
mov
eax, stProcess.th32ProcessID
mov
dwProcessID, eax
.break
.endif
invoke
Process32Next, hSnapshot, addr stProcess
.endw
invoke
CloseHandle, hSnapshot
mov
eax, dwProcessID
ret
_GetPidFromProcName endp
end start
:make
set path=%path%;c:\masm32\bin
set appname=GetSys3
ml /nologo /c /coff %appname%.bat
link /nologo /subsystem:windows %appname%.obj
del %appname%.obj
echo.
pause
4. 远程线程的方法
通过注入远程线程的方法来运行指定的 regedit.exe 程序,也是相当于运行 regedit.exe 程序的是系统进程,那么 regedit.exe 也就自然而然的继承了系统进程的 SYSTEM 权限。
;@echo off
;goto make
;====================================================================================
; 一块三毛钱
; http://zhongts.
; zhongts@
; 2005.1.15
;
; 以 SYSTEM 权限运行程序 - GetSys4
;
; 采用远程线程的方法
;
;====================================================================================
.386
.model flat, stdcall
option casemap :none
include c:\masm32\include\windows.inc
include c:\masm32\include\kernel32.inc
include c:\masm32\include\advapi32.inc
include c:\masm32\include\masm32.inc
includelib c:\masm32\lib\kernel32.lib
includelib c:\masm32\lib\advapi32.lib
includelib c:\masm32\lib\masm32.lib
_EnablePrivilege proto :DWORD,:DWORD
_GetPidFromProcName proto :DWORD
;下面两个宏来源于罗云彬的《Windows 环境下32位汇编程序设计》一书
reverseArgs macro arglist:VARARG
local
txt,count
txt
TEXTEQU <>
count
= 0
for
i,<arglist>
count
= count + 1
txt
TEXTEQU @CatStr(i,<!,>,<%txt>)
endm
if
count GT 0
txt
SUBSTR
txt,1,@SizeStr(%txt)-1
endif
exitm
txt
endm
_invoke macro _Proc,args:VARARG
local
count
count
= 0
%
for
i,< reverseArgs( args ) >
count
= count + 1
push
i
endm
call
dword ptr _Proc
endm
CTXT MACRO text
local lbl
.const
lbl db text,0
.code
exitm
<offset lbl>
ENDM
.data?
g_hProcess
dd
?
g_lpRemoteCode
dd
?
.code
Remote_code_start
equ this byte
g_lpGetModuleHandleA
dd
?
g_lpGetProcAddress
dd
?
g_szKernel32
db
"Kernel32.dll",0
g_szCreateProcessA
db
"CreateProcessA",0
g_lpCreateProcessA
dd
?
g_szRegedit
db
"Regedit.exe",0
g_szDesktop
db
"WinSta0\Default",0
g_stStartupInfo
STARTUPINFO <?>
g_procinfo
PROCESS_INFORMATION <?>
_RemoteThread proc
;
int
3
pushad
call
@F
@@:
pop
ebx
sub
ebx, offset @B
lea
eax, [ebx+g_szKernel32]
_invoke [ebx+g_lpGetModuleHandleA], eax
mov
esi, eax
lea
eax, [ebx+g_szCreateProcessA]
_invoke [ebx+g_lpGetProcAddress], esi, eax
mov
[ebx+g_lpCreateProcessA], eax
lea
eax, [ebx+g_szDesktop]
lea
ecx, [ebx+g_stStartupInfo]
mov
dword ptr [ecx], sizeof g_stStartupInfo
mov
dword ptr [ecx+8], eax
lea
eax, [ebx+g_szRegedit]
lea
edx, [ebx+g_procinfo]
_invoke [ebx+g_lpCreateProcessA], 0, eax, 0, 0, 0, 0, 0, 0, ecx, edx
popad
ret
_RemoteThread endp
Remote_code_end
equ this byte
Remote_code_length
equ offset Remote_code_end - offset Remote_code_start
start proc
invoke
GetModuleHandle, CTXT("kernel32.dll")
mov
ebx, eax
invoke
GetProcAddress, ebx, CTXT("GetModuleHandleA")
mov
g_lpGetModuleHandleA, eax
invoke
GetProcAddress, ebx, CTXT("GetProcAddress")
mov
g_lpGetProcAddress, eax
invoke
_EnablePrivilege, CTXT("SeDebugPrivilege"), TRUE
invoke
_GetPidFromProcName, CTXT("lsass.exe")
invoke
OpenProcess, PROCESS_CREATE_THREAD+PROCESS_VM_OPERATION+PROCESS_VM_WRITE, FALSE, eax
.if eax
mov
g_hProcess, eax
invoke
VirtualAllocEx, g_hProcess, NULL, Remote_code_length, MEM_COMMIT, PAGE_EXECUTE_READWRITE
.if eax
mov
g_lpRemoteCode, eax
invoke
WriteProcessMemory, g_hProcess, g_lpRemoteCode, offset Remote_code_start, Remote_code_length, NULL
mov
eax, g_lpRemoteCode
add
eax, offset _RemoteThread - offset Remote_code_start
invoke
CreateRemoteThread, g_hProcess, NULL, 0, eax, 0, 0, NULL
invoke
CloseHandle, eax
.endif
invoke
CloseHandle, g_hProcess
.endif
invoke
ExitProcess, NULL
start endp
_EnablePrivilege proc szPriv:DWORD, bFlags:DWORD
LOCAL
hToken
LOCAL
tkp : TOKEN_PRIVILEGES
invoke
GetCurrentProcess
mov
edx, eax
invoke
OpenProcessToken, edx, TOKEN_ADJUST_PRIVILEGES or TOKEN_QUERY, addr hToken
invoke
LookupPrivilegeValue, NULL, szPriv, addr tkp.Privileges.Luid
mov
tkp.PrivilegeCount, 1
xor
eax, eax
.if bFlags
mov
eax, SE_PRIVILEGE_ENABLED
.endif
mov
tkp.Privileges.Attributes, eax
invoke
AdjustTokenPrivileges, hToken, FALSE, addr tkp, 0, 0, 0
push
eax
invoke
CloseHandle, hToken
pop
eax
ret
_EnablePrivilege endp
_GetPidFromProcName proc lpProcName:DWORD
LOCAL
stProcess : PROCESSENTRY32
LOCAL
hSnapshot
LOCAL
dwProcessID
mov
dwProcessID, 0
invoke
RtlZeroMemory, addr stProcess, sizeof stProcess
mov
stProcess.dwSize, sizeof stProcess
invoke
CreateToolhelp32Snapshot, TH32CS_SNAPPROCESS, 0
mov
hSnapshot, eax
invoke
Process32First, hSnapshot, addr stProcess
.while eax
invoke
lstrcmpi, lpProcName, addr stProcess.szExeFile
.if eax==0
mov
eax, stProcess.th32ProcessID
mov
dwProcessID, eax
.break
.endif
invoke
Process32Next, hSnapshot, addr stProcess
.endw
invoke
CloseHandle, hSnapshot
mov
eax, dwProcessID
ret
_GetPidFromProcName endp
end start
:make
set path=%path%;c:\masm32\bin
set appname=GetSys4
ml /nologo /c /coff %appname%.bat
link /nologo /subsystem:windows /section:.text,rwe %appname%.obj
del %appname%.obj
echo.
pause
这段代码也没什么好解释的,唯一一个要注意的地方就是调用 CreateProcess 函数时,lpStartupInfo 参数指向的 STARTUPINFO 结构成员 lpDesktop 需要明确的指定 WinSta0\Default 为运行桌面。否则,程序 regedit.exe 运行后不知道跑到哪里去了。
参考资料
[1] scz MSDN系列(3)--Administrator用户直接获取SYSTEM权限
http://www.
[2] wsu 1.0
http://www.
[3] Keith Brown 《Windows 安全性编程》
[4] Token.Master
Jeffrey Richter/Jason D.Clark 《Programming.Server-Side.Applications.for.MS.Windows.2000》