mirror of
https://github.com/UzixLS/KernelEx.git
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import KernelEx-4.0-RC1
This commit is contained in:
UzixLS
483
setup/setup.cpp
Normal file
483
setup/setup.cpp
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@ -0,0 +1,483 @@
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/*
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* KernelEx
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* Copyright (C) 2008-2009, Xeno86
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*
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* This file is part of KernelEx source code.
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*
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* KernelEx is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; version 2 of the License.
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*
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* KernelEx is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <windows.h>
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#include <tlhelp32.h>
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#include <cassert>
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#include <cstdio>
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#include <cstdarg>
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#include "debug.h"
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#include "pemanip.h"
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#include "loadstub.h"
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#include "setup.h"
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#include "wininit.h"
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#include "resource.h"
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#define CODE_SEG ".text"
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#define DATA_SEG ".data"
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Setup::Setup(const char* backup_file)
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{
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this->backup_file = backup_file;
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h_kernel32 = GetModuleHandle("kernel32");
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detect_old_version();
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pemem.OpenMemory(h_kernel32);
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if (!pemem.HasTarget())
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ShowError(IDS_FAILOPEN, "k32mem");
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version = get_signature_ver();
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OSVERSIONINFOA osv;
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osv.dwOSVersionInfoSize = sizeof(osv);
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GetVersionEx(&osv);
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if ((osv.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS)
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|| (osv.dwMajorVersion != 4)
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|| (osv.dwMinorVersion != 10 && osv.dwMinorVersion != 90))
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ShowError(IDS_WINVER);
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//on WinMe and file called "setup.exe" we get 4.10 (lol)
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if (osv.dwMinorVersion == 90)
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{
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DBGPRINTF(("Detected Windows Me\n"));
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is_winme = true;
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}
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else
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{
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DBGPRINTF(("Detected Windows 98\n"));
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is_winme = false;
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}
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}
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bool Setup::detect_old_version()
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{
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typedef void (WINAPI *KV_t)(char *);
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KV_t h_KVersion;
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char buf[32];
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h_KVersion = (KV_t)GetProcAddress(h_kernel32, "KUPVersion");
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if (!h_KVersion)
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h_KVersion = (KV_t)GetProcAddress(h_kernel32, "KEXVersion");
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if (!h_KVersion)
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return false;
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h_KVersion(buf);
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if (strcmp(buf, "4") < 0)
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ShowError(IDS_OLDKEX);
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return true;
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}
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int Setup::find_pattern(DWORD offset, int size, const short* pattern,
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int pat_len, DWORD* found_loc)
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{
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DWORD end_offset = offset + size - pat_len;
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int found = 0;
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for (DWORD i = offset ; i <= end_offset ; i++)
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{
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if (pattern[0] < 0 || *(unsigned char*)i == pattern[0])
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{
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int j;
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for (j = 1 ; j < pat_len ; j++)
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{
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if (pattern[j] >= 0 && *(unsigned char*)(i + j) != pattern[j])
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break;
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}
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if (j == pat_len) //pattern found
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{
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*found_loc = i;
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found++;
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}
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}
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}
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return found;
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}
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void Setup::set_pattern(DWORD loc, const short* new_pattern, int pat_len)
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{
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unsigned char* offset = (unsigned char*) loc;
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const short* pat_ptr = new_pattern;
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while (pat_len--)
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{
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if (*pat_ptr != -1)
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*offset = *pat_ptr & 0xff;
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offset++;
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pat_ptr++;
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}
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}
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int Setup::get_signature_ver()
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{
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DWORD ptr;
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KernelEx_dataseg* dseg = NULL;
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DWORD sign_len = sizeof(KEX_SIGNATURE) - 1;
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DWORD data = (DWORD) pemem.GetSectionByName(DATA_SEG);
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int data_size = pemem.GetSectionSize(DATA_SEG);
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ptr = data + data_size - sign_len;
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while (ptr >= data)
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{
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if (!memcmp((void*)ptr, KEX_SIGNATURE, sign_len))
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{
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dseg = (KernelEx_dataseg*) ptr;
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break;
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}
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ptr--;
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}
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if (!dseg)
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{
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DBGPRINTF(("Signature not found\n"));
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return -1;
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}
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else
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DBGPRINTF(("Signature found @ 0x%08x\n", ptr));
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return dseg->version;
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}
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void Setup::disable_platform_check()
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{
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static const short pattern[] = {
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0x66,0x8b,0x46,0x48,0x66,0x3d,0x04,0x00,0x0f,0x87,0x9c,0x01,0x00,0x00,
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0x75,0x0b,0x66,0x83,0x7e,0x4a,0x0a,0x0f,0x87,0x8f,0x01,0x00,0x00,0x66,
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0x81,0x7e,0x04,0x4c,0x01,
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};
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static const short after[] = {
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0xeb,0x19,0x46,0x48,0x66,0x3d,0x04,0x00,0x0f,0x87,0x9c,0x01,0x00,0x00,
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0x75,0x0b,0x66,0x83,0x7e,0x4a,0x0a,0x0f,0x87,0x8f,0x01,0x00,0x00,0x66,
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0x81,0x7e,0x04,0x4c,0x01,
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};
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DWORD offset = (DWORD) pefile.GetSectionByName(CODE_SEG);
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int size = pefile.GetSectionSize(CODE_SEG);
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int length = sizeof(pattern) / sizeof(short);
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DWORD found_loc;
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int found = find_pattern(offset, size, pattern, length, &found_loc);
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if (found != 1)
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{
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if (!found) ShowError(IDS_NOPAT, "disable_platform_check");
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else ShowError(IDS_MULPAT, "disable_platform_check");
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}
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DBGPRINTF(("%s: pattern found @ 0x%08x\n", "disable_platform_check",
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pefile.PointerToRva((void*) found_loc) + pefile.GetImageBase()));
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set_pattern(found_loc, after, length);
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}
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void Setup::mod_imte_alloc()
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{
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//VA BFF8745C, RVA 1745C, file 15A5C, sec E45C
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static const short pattern[] = {
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0x66,0xff,0x05,-1,-1,-1,0xbf,0x6a,0x3c,0xe8,
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};
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static const short after[] = {
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0x66,0xff,0x05,-1,-1,-1,0xbf,0x6a,0x44,0xe8,
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};
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DWORD offset = (DWORD) pefile.GetSectionByName(CODE_SEG);
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int size = pefile.GetSectionSize(CODE_SEG);
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int length = sizeof(pattern) / sizeof(short);
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DWORD found_loc;
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int found = find_pattern(offset, size, pattern, length, &found_loc);
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if (found != 1)
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{
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if (!found) ShowError(IDS_NOPAT, "mod_imte_alloc");
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else ShowError(IDS_MULPAT, "mod_imte_alloc");
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}
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DBGPRINTF(("%s: pattern found @ 0x%08x\n", "mod_imte_alloc",
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pefile.PointerToRva((void*) found_loc) + pefile.GetImageBase()));
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set_pattern(found_loc, after, length);
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}
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void Setup::find_ExportFromX()
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{
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static const short pattern[] = {
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0x8B,0x0D,-1,-1,-1,-1,0x0F,0xBF,0x40,0x10,0x8B,0x14,0x81,0x8B,0x44,
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0x24,0x14,0x3D,0x00,0x00,0x01,0x00,0x8B,0x4A,0x04,0x73,0x15,0x3B,0x1D,
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-1,-1,-1,-1,0x75,0x04,0x6A,0x32,0xEB,0x3E,0x50,0x51,0xE8,-2,-2,-2,-2,
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0xEB,0x0C,0xFF,0x74,0x24,0x14,0x6A,0x00,0x51,0xE8,-2,-2,-2,-2,0x83,
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0x7F,0x54,0x00,0x8B,0xF0
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};
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DWORD offset = (DWORD) pefile.GetSectionByName(CODE_SEG);
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int size = pefile.GetSectionSize(CODE_SEG);
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int length = sizeof(pattern) / sizeof(short);
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DWORD found_loc;
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int found = find_pattern(offset, size,pattern, length, &found_loc);
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if (found != 1)
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{
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if (!found) ShowError(IDS_NOPAT, "exportfromX");
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else ShowError(IDS_MULPAT, "exportfromX");
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}
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DBGPRINTF(("%s: pattern found @ 0x%08x\n", "exportfromX",
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pefile.PointerToRva((void*) found_loc) + pefile.GetImageBase()));
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gpa_ExportFromOrdinal_call = found_loc + 0x29;
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gpa_ExportFromName_call = found_loc + 0x37;
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_ExportFromOrdinal = decode_call(gpa_ExportFromOrdinal_call, 5);
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_ExportFromName = decode_call(gpa_ExportFromName_call, 5);
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DWORD start = (DWORD) pefile.RvaToPointer(_ExportFromName);
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for (DWORD a = start ; a < start + 0x100 ; a++)
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if (is_call_ref(a, _ExportFromOrdinal))
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EFN_EFO_call = a;
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}
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void Setup::kill_process(const char* name)
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{
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PROCESSENTRY32 pe32;
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void * h = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
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if (h == INVALID_HANDLE_VALUE)
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return;
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pe32.dwSize = sizeof(PROCESSENTRY32);
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Process32First(h, &pe32);
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do
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{
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if (strstr(pe32.szExeFile, name))
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{
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DBGPRINTF(("Terminating process: %s... ", name));
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HANDLE hp = OpenProcess(PROCESS_TERMINATE, FALSE, pe32.th32ProcessID);
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if (hp == INVALID_HANDLE_VALUE)
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{
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DBGPRINTF(("open fail\n"));
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continue;
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}
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if (TerminateProcess(hp, 0))
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DBGPRINTF(("ok\n"));
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else
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DBGPRINTF(("fail\n"));
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CloseHandle(hp);
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}
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}
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while (Process32Next(h, &pe32));
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CloseHandle(h);
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}
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DWORD Setup::decode_call(DWORD addr, int len)
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{
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unsigned char* code = (unsigned char*)addr;
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if (len == 5 && *code == 0xe8) /* call rel32 */
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{
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return (DWORD)(pefile.PointerToRva(code) + 5 + *(DWORD*)(code + 1));
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}
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else if (len == 6 && code[0] == 0xff
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&& code[1] == 0x15) /* call m32 */
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{
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return *(DWORD*)(code + 2);
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}
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else return 0;
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}
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bool Setup::is_call_ref(DWORD loc, DWORD target)
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{
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DWORD addr = decode_call(loc, 5); // size of call imm32 opcode
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if (addr == target)
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return true;
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return false;
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}
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// Both addresses have to be from the same section!
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void Setup::set_call_ref(DWORD loc, DWORD target)
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{
|
||||
DWORD rel;
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||||
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assert(*(BYTE*) loc == 0xe8);
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||||
|
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rel = target - (loc + 5);
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*(DWORD*)(loc + 1) = rel;
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}
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bool Setup::is_fixupc(DWORD addr)
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{
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if (*(DWORD*)(addr - 5) == 0xDAC)
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return true;
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||||
return false;
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}
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string Setup::get_temp_file_name()
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{
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char tmpdir[MAX_PATH];
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char target[MAX_PATH];
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||||
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GetSystemDirectory(tmpdir, sizeof(tmpdir));
|
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GetTempFileName(tmpdir, "kex", 0, target);
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||||
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return target;
|
||||
}
|
||||
|
||||
void Setup::ShowError(UINT id, ...)
|
||||
{
|
||||
char format[512];
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char out[512];
|
||||
va_list vargs;
|
||||
|
||||
va_start(vargs, id);
|
||||
if (!LoadString(GetModuleHandle(NULL), id, format, sizeof(format)))
|
||||
sprintf(out, "ERROR: Missing string resource %d", id);
|
||||
else
|
||||
_vsnprintf(out, sizeof(out), format, vargs);
|
||||
va_end(vargs);
|
||||
MessageBox(NULL, out, "KernelEx Setup", MB_OK | MB_ICONERROR);
|
||||
exit(id);
|
||||
}
|
||||
|
||||
void Setup::install()
|
||||
{
|
||||
upgrade = false;
|
||||
|
||||
if (version == KEX_STUB_VER)
|
||||
return;
|
||||
|
||||
if (version >= 0)
|
||||
{
|
||||
if (version > KEX_STUB_VER)
|
||||
ShowError(IDS_INVSTUB, version);
|
||||
else
|
||||
upgrade = true;
|
||||
}
|
||||
|
||||
char kernel32path[MAX_PATH];
|
||||
GetModuleFileName(h_kernel32, kernel32path, sizeof(kernel32path));
|
||||
|
||||
pefile.OpenFile(upgrade ? backup_file.c_str() : kernel32path, 0x10000);
|
||||
if (!pefile.HasTarget())
|
||||
ShowError(IDS_FAILOPEN, upgrade ? backup_file.c_str() : kernel32path);
|
||||
|
||||
find_ExportFromX();
|
||||
disable_platform_check();
|
||||
mod_imte_alloc();
|
||||
|
||||
KernelEx_codeseg* cseg;
|
||||
KernelEx_dataseg* dseg;
|
||||
if (!pefile.AllocSectionSpace(CODE_SEG,
|
||||
sizeof(KernelEx_codeseg), (void**) &cseg, sizeof(DWORD)))
|
||||
ShowError(IDS_FAILSEC, CODE_SEG);
|
||||
if (!pefile.AllocSectionSpace(DATA_SEG,
|
||||
sizeof(KernelEx_dataseg), (void**) &dseg, sizeof(DWORD)))
|
||||
ShowError(IDS_FAILSEC, DATA_SEG);
|
||||
|
||||
memcpy(cseg->signature, "KrnlEx", 6);
|
||||
cseg->version = KEX_STUB_VER;
|
||||
for (int i = 0 ; i < JTAB_SIZE ; i++)
|
||||
{
|
||||
cseg->jmp_stub[i].opcode = 0x25ff;
|
||||
cseg->jmp_stub[i].addr = (DWORD)
|
||||
pefile.PointerToRva(&dseg->jtab[i]) + pefile.GetImageBase();
|
||||
cseg->jmp_stub[i].nop = 0x9090;
|
||||
}
|
||||
|
||||
memcpy(dseg->signature, "KrnlEx", 6);
|
||||
dseg->version = KEX_STUB_VER;
|
||||
dseg->jtab[0] = _ExportFromOrdinal + pefile.GetImageBase();
|
||||
dseg->jtab[1] = _ExportFromOrdinal + pefile.GetImageBase();
|
||||
dseg->jtab[2] = _ExportFromName + pefile.GetImageBase();
|
||||
dseg->jtab[3] = _ExportFromName + pefile.GetImageBase();
|
||||
|
||||
DWORD code = (DWORD) pefile.GetSectionByName(CODE_SEG);
|
||||
int code_size = pefile.GetSectionSize(CODE_SEG);
|
||||
|
||||
int efo_cnt = 0;
|
||||
int efn_cnt = 0;
|
||||
|
||||
for (DWORD a = code ; a < code + code_size ; a++)
|
||||
{
|
||||
if (is_call_ref(a, _ExportFromOrdinal))
|
||||
{
|
||||
DWORD file_loc = a;
|
||||
if (a == EFN_EFO_call)
|
||||
continue;
|
||||
if (a == gpa_ExportFromOrdinal_call)
|
||||
set_call_ref(file_loc, (DWORD) &cseg->jmp_stub[JTAB_EFO_DYN]);
|
||||
else
|
||||
set_call_ref(file_loc, (DWORD) &cseg->jmp_stub[JTAB_EFO_STA]);
|
||||
DBGPRINTF(("EFO: address %08x\n", pefile.PointerToRva((void*) a)
|
||||
+ pefile.GetImageBase()));
|
||||
efo_cnt++;
|
||||
}
|
||||
else if (is_call_ref(a, _ExportFromName))
|
||||
{
|
||||
DWORD file_loc = a;
|
||||
if (is_fixupc(a))
|
||||
continue;
|
||||
if (a == gpa_ExportFromName_call)
|
||||
set_call_ref(file_loc, (DWORD) &cseg->jmp_stub[JTAB_EFN_DYN]);
|
||||
else
|
||||
set_call_ref(file_loc, (DWORD) &cseg->jmp_stub[JTAB_EFN_STA]);
|
||||
DBGPRINTF(("EFN: address %08x\n", pefile.PointerToRva((void*) a)
|
||||
+ pefile.GetImageBase()));
|
||||
efn_cnt++;
|
||||
}
|
||||
}
|
||||
|
||||
if (efo_cnt != 2 || efn_cnt != 2)
|
||||
ShowError(IDS_ERRCHECK);
|
||||
|
||||
// backup original file
|
||||
if (!upgrade)
|
||||
{
|
||||
if (!CopyFile(kernel32path, backup_file.c_str(), FALSE))
|
||||
ShowError(IDS_FAILBAK, backup_file.c_str());
|
||||
}
|
||||
|
||||
// save patched file
|
||||
string tmp_file = get_temp_file_name();
|
||||
pefile.SaveFile(tmp_file.c_str());
|
||||
|
||||
if (is_winme)
|
||||
{
|
||||
kill_process("\\STATEMGR.EXE");
|
||||
kill_process("\\STMGR.EXE");
|
||||
}
|
||||
|
||||
Wininit.add(kernel32path, tmp_file);
|
||||
|
||||
if (is_winme)
|
||||
{
|
||||
char path[MAX_PATH];
|
||||
GetWindowsDirectory(path, sizeof(path));
|
||||
if (path[strlen(path) - 1] != '\\')
|
||||
strcat(path, "\\");
|
||||
strcat(path, "WININIT.LOG");
|
||||
Wininit.add("NUL", path);
|
||||
path[3] = '\0';
|
||||
strcat(path, "_RESTORE\\TEMP");
|
||||
Wininit.add("DIRNUL", path);
|
||||
}
|
||||
|
||||
Wininit.save();
|
||||
}
|
||||
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
if (argc != 2)
|
||||
return 1;
|
||||
|
||||
Setup setup(argv[1]);
|
||||
setup.install();
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user