下面是一个system权限下的降权程序,但是对一些常用命令的结果无法正常显示,比如:whoami tasklist等等:
文章作者：pt007[at]vip.sina.com
信息来源：邪恶八进制信息安全团队(www.eviloctal.com)
#include "windows.h"
#include <process.h>
#include <Tlhelp32.h>
#include <tchar.h>
#include <psapi.h>
#include <stdio.h>
#include <STDLIB.H>
#include <tlhelp32.h>
#pragma comment (lib,"psapi")
int upto_common_user(TCHAR cmdline[256]); //切换到当前活动用户
DWORD GetPIDFromName(char *ProcName);
int make_to_lower1(char *buf,char *lowerbuf);
int PrintProcessNameAndID(DWORD processID);
BOOL EnableDebugPriv();
HANDLE GetProcessHandle(LPSTR szExeName);
/*int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)*/
int main(int argc, char **argv) //切换到管理员用户
{
TCHAR cmdline1[256]={0};
if(argc <2)
{
printf("用法: %s \"whoami\"\n",argv[0]);
return 0;
}
lstrcpy(cmdline1,argv[1]);
upto_common_user(cmdline1);
return 0;
}
int upto_common_user(TCHAR cmdline[256]) //切换到管理员用户身份
{
HANDLE hToken;
HANDLE hExp = GetProcessHandle("EXPLORER.EXE");
if(hExp == NULL)
return FALSE;
OpenProcessToken(hExp,TOKEN_ALL_ACCESS,&hToken);
if(hToken == NULL)
return FALSE;
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory(&si, sizeof(STARTUPINFO));
si.cb = sizeof(STARTUPINFO);
si.lpDesktop = "winsta0\\default";
si.wShowWindow = SW_SHOW;
si.dwFlags=STARTF_USESHOWWINDOW;
TCHAR szParameter[256] = "/c ";
lstrcat(szParameter,cmdline);
printf("szParameter=%s\n",szParameter);
//char * lpAppName="c:\\win2003\\temp\\svchosts.exe";
//TCHAR szParameter[10] = {0};
//char * lpAppName;//="c:\\tmp\\KeyLoggerTest.exe";
char path[MAX_PATH];
GetSystemWindowsDirectory(path,MAX_PATH); //c:\win2003
lstrcat(path,"\\system32\\cmd.exe"); //c:\win2003\temp\klog.txt*/
//lstrcpy(lpAppName,(char *)path);
//打开用户的winsta0
/* HWINSTA hwinsta = OpenWindowStation("winsta0", FALSE,
WINSTA_ACCESSCLIPBOARD |
WINSTA_ACCESSGLOBALATOMS |
WINSTA_CREATEDESKTOP |
WINSTA_ENUMDESKTOPS |
WINSTA_ENUMERATE |
WINSTA_EXITWINDOWS |
WINSTA_READATTRIBUTES |
WINSTA_READSCREEN |
WINSTA_WRITEATTRIBUTES);
if (hwinsta == NULL){
printf(_T("open window station err\n"));
return 0;
}
if (!SetProcessWindowStation(hwinsta)){
printf(_T("Set window station err\n"));
return 0;
}
//打开desktop
HDESK hdesk = OpenDesktop("default", 0, FALSE,
DESKTOP_CREATEMENU |DESKTOP_CREATEWINDOW |DESKTOP_ENUMERATE|DESKTOP_HOOKCONTROL|
DESKTOP_JOURNALPLAYBACK |
DESKTOP_JOURNALRECORD |
DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP |
DESKTOP_WRITEOBJECTS);
if (hdesk == NULL){
printf("Open desktop err!\n");
return 0;
}
SetThreadDesktop(hdesk); */
if(CreateProcessAsUser(hToken,(char *)path,szParameter,NULL,
NULL,FALSE,CREATE_DEFAULT_ERROR_MODE,NULL,NULL,&si,&pi)) //以administrator用户身份执行程序,CREATE_NO_WINDOW,CREATE_NEW_CONSOLE,CREATE_DEFAULT_ERROR_MODE
{
printf("CreateProcessAsUser sucessed!%d\n",GetLastError());
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
}
/*HANDLE hToken,hNewToken;
HANDLE hProcess;
DWORD PID1;
PID1=GetPIDFromName("Explorer.EXE"); //获得explorer.exe进程的PID
//PID1=964; //explorer.exe进程的PID
printf("explorer.exe's PID=%d\n",PID1);
hProcess = ::OpenProcess(PROCESS_ALL_ACCESS,0,PID1);
if(hProcess == NULL)
{
//printf(NULL, "OpenProcess" , "FF", MB_OK);
//MessageBox(NULL,"Error Opening Process",NULL,MB_OK | MB_APPLMODAL | MB_ICONWARNING | MB_SERVICE_NOTIFICATION);
printf("Error Opening Process!%x\n",GetLastError());
return 0;
}
if(OpenProcessToken(hProcess,TOKEN_ALL_ACCESS,&hToken) == 0) //TOKEN_ALL_ACCESS
{
// MessageBoxA(NULL, "OpenProcessToken" , "FF", MB_OK);
// MessageBox(NULL,"Error Opening Process Token.Err = " ,NULL,MB_OK | MB_APPLMODAL | MB_ICONWARNING | MB_SERVICE_NOTIFICATION);
printf("Error Opening Process Token!%x\n",GetLastError());
return 1;
}
//
// 模拟当前登陆用户
//
//DuplicateTokenEx(hToken, NULL, NULL, SecurityIdentification, TokenPrimary, &hNewToken);
// EnableDebugPriv();
if(ImpersonateLoggedOnUser(hToken) == 0)
{
//MessageBox(NULL,AnsiString("Error Calling ImpersonateLoggedOnUser.Err = " + SysErrorMessage(GetLastError())).c_str(),NULL,MB_OK | MB_APPLMODAL | MB_ICONWARNING | MB_SERVICE_NOTIFICATION);
//MessageBoxA(NULL, "D" , "FF", MB_OK);
printf("Error Calling ImpersonateLoggedOnUser!%x\n",GetLastError());
return 0;
}
/*TOKEN_PRIVILEGES tkp; // ptr. to token structure
BOOL fResult; // system shutdown flag
LookupPrivilegeValue(NULL,SE_DEBUG_NAME,&tkp.Privileges[0].Luid);
tkp.PrivilegeCount = 1; // one privilege to set
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
fResult=AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, (PTOKEN_PRIVILEGES) NULL, 0);
//printf("Error Calling AdjustTokenPrivileges!%x\n",GetLastError());
if(fResult==0)
{
printf("Error Calling AdjustTokenPrivileges!%x\n",GetLastError());
return 0;
}
system("whoami");*/
return 0;
}
DWORD GetPIDFromName(char *ProcName)
{
/*HANDLE hSnapshot;
PROCESSENTRY32 ProcStruct;
DWORD ProcessID = -1;
int Result;
char *t1,*t2;
hSnapshot = CreateToolhelp32Snapshot((DWORD)TH32CS_SNAPPROCESS,0);
ProcStruct.dwSize = sizeof(PROCESSENTRY32);
Result = Process32First(hSnapshot,&ProcStruct);
while(Result)
{
//if(AnsiString(ProcStruct.szExeFile).LowerCase().Pos(ProcName1.LowerCase()) > 0)
t1 = (char *)malloc(strlen(ProcName));
t2 = (char *)malloc(strlen(ProcStruct.szExeFile));
make_to_lower1(ProcName,t1);
make_to_lower1(ProcStruct.szExeFile,t2);
if(strstr(t1 , t2))
{
ProcessID = ProcStruct.th32ProcessID;
if(t1)
free(t1);
if(t2)
free(t2);
break;
}
Result = Process32Next(hSnapshot,&ProcStruct);
if(t1)
free(t1);
if(t2)
free(t2);
}
CloseHandle(hSnapshot);
return ProcessID;*/
DWORD aProcesses[1024], cbNeeded, cProcesses;
unsigned int i;
int n=0;
if(!EnumProcesses(aProcesses,sizeof(aProcesses),&cbNeeded))
return 0;
cProcesses = cbNeeded/sizeof(DWORD);
for(i=0;i<cProcesses;i++)
{ n=PrintProcessNameAndID(aProcesses);
if(n==1)
{
break;
}
}
return aProcesses;
}
int PrintProcessNameAndID(DWORD processID)
{
TCHAR szProcessName[MAX_PATH] = _T("<unknown>");
//TCHAR *szProcessName= _T("<unknown>");
char * szProcessName1 = "";
int num=0;
HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS,FALSE,processID);
//Process name.
if(NULL!=hProcess)
{
HMODULE hMod;
DWORD cbNeeded;
if(EnumProcessModules(hProcess,&hMod,sizeof(hMod), &cbNeeded))
{
GetModuleBaseName(hProcess,hMod,szProcessName,sizeof(szProcessName)/sizeof(TCHAR));
}
}
//printf(_T("PID: %d (%s) \n"),processID,szProcessName);
//if (szProcessName==_T("360tray.exe"))
if (!lstrcmp(szProcessName,_T("Explorer.EXE")))//Explorer.EXE
{
printf("PID: %d (%s)\n ",processID,szProcessName);
num=1;
return num;
}
else
{
return num;
}
CloseHandle(hProcess);
}
BOOL EnableDebugPriv()
{
HANDLE hToken;
LUID sedebugnameValue;
TOKEN_PRIVILEGES tkp;
if ( ! OpenProcessToken( GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken ) )
{
MessageBox(NULL, "fail", "fail", MB_OK);
return FALSE;
}
if ( ! LookupPrivilegeValue( NULL, SE_DEBUG_NAME, &sedebugnameValue ) )
{
MessageBox(NULL, "fail", "fail", MB_OK);
CloseHandle( hToken );
return FALSE;
}
tkp.PrivilegeCount = 1;
tkp.Privileges[0].Luid = sedebugnameValue;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if ( ! AdjustTokenPrivileges( hToken, FALSE, &tkp, sizeof tkp, NULL, NULL ) )
{
MessageBox(NULL, "fail", "fail", MB_OK);
return FALSE;
}
CloseHandle( hToken );
return TRUE;
}
int make_to_lower1(char *buf,char *lowerbuf)
{
if (buf == NULL)
return 1;
while (buf[0] != 0) {
lowerbuf[0] = tolower(buf[0]);
buf++;
lowerbuf++;
}
return 1;
}
HANDLE GetProcessHandle(LPSTR szExeName)
{
PROCESSENTRY32 Pc = { sizeof(PROCESSENTRY32) };
HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPALL, 0);
if(Process32First(hSnapshot, &Pc)){
do{
if(!stricmp(Pc.szExeFile, szExeName)) { //返回explorer.exe进程的PID
printf("explorer's PID=%d\n",Pc.th32ProcessID);
return OpenProcess(PROCESS_ALL_ACCESS, TRUE, Pc.th32ProcessID);
}
}while(Process32Next(hSnapshot, &Pc));
}
return NULL;
}
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