[Source Code] signature_scanner source code for this can anybody help me chack this by...

Code:
#pragma once
#include <windows.h>
#include <psapi.h>
#pragma comment(lib, "psapi.lib")
#include <stdio.h>

// Usage: unsigned long address = signature_scanner->search("3AB2DFAB????????3FBACD300200A1XXXXXXXXB1C 4DA");
// X is the address
// ? is a wildcard

class signature_scanner
{
private:
unsigned long BaseAddress;
unsigned long ModuleSize;

public:
signature_scanner()
{
//SYSTEM_INFO info;
//GetSystemInfo(&info);
//this->BaseAddress = (unsigned long)info.lpMinimumApplicationAddress;

// Could be injected earlier than expected

while (!(this->BaseAddress = (unsigned long)GetModuleHandle(NULL)))
Sleep(100);

// Getting size of image

MODULEINFO modinfo;

while (!GetModuleInformation(GetCurrentProcess(), GetModuleHandle(NULL), &modinfo, sizeof(MODULEINFO)))
Sleep(100);

this->ModuleSize = modinfo.SizeOfImage;

// Wait for the application to finish loading

MEMORY_BASIC_INFORMATION meminfo;

while (true)
{
if (VirtualQuery((void*)this->ModuleSize, &meminfo, sizeof(MEMORY_BASIC_INFORMATION)))
if (!(meminfo.Protect &PAGE_EXECUTE_WRITECOPY))
break;

Sleep(100);
}
}

unsigned long search(const char* string, unsigned short offset=0)
{
unsigned int p_length = strlen(string);// Pattern's length

if (p_length % 2 != 0 || p_length < 2 || !this->BaseAddress || !this->ModuleSize) return NULL;// Invalid operation

unsigned short length = p_length / 2;// Number of bytes

// The buffer is storing the real bytes' values after parsing the string
unsigned char* buffer = new unsigned char[length];
SecureZeroMemory(buffer, length);

// Copy of string

char* pattern = new char[p_length+1];// +1 for the null terminated string
ZeroMemory(pattern, p_length+1);
strcpy_s(pattern, p_length+1, string);
_strupr_s(pattern, p_length+1);

// Set vars

unsigned char f_byte;
unsigned char s_byte;

// Parsing of string

for (unsigned short z = 0; z < length; z++)
{
f_byte = pattern[z*2];// First byte
s_byte = pattern[(z*2)+1];// Second byte

if ( ( (f_byte <= 'F' && f_byte >= 'A') || (f_byte <= '9' && f_byte >= '0') ) && ( (s_byte <= 'F' && s_byte >= 'A') || (s_byte <= '9' && s_byte >= '0') ) )
{
if (f_byte <= '9') buffer[z] += f_byte - '0';
else buffer[z] += f_byte - 'A' + 10;
buffer[z] *= 16;
if (s_byte <= '9') buffer[z] += s_byte - '0';
else buffer[z] += s_byte - 'A' + 10;
}
else if (f_byte == 'X' || s_byte == 'X') buffer[z] = 'X';
else buffer[z] = '?';// Wildcard
}

// Remove buffer

delete[] pattern;

// Start searching

unsigned short x;
unsigned long i = this->BaseAddress;
MEMORY_BASIC_INFORMATION meminfo;
unsigned long EOR;

while (i < this->ModuleSize)
{
VirtualQuery((void*)i, &meminfo, sizeof(MEMORY_BASIC_INFORMATION));

if (!(meminfo.Protect &PAGE_EXECUTE_READWRITE))// Good for AVA for now
{// !(meminfo.Protect &(PAGE_READWRITE | PAGE_WRITECOPY | PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_WRITECOPY)) || !(meminfo.State &MEM_COMMIT)
i += meminfo.RegionSize;
continue;
}

EOR = i + meminfo.RegionSize;

for (; i < EOR; i++)
{
for (x = 0; x < length; x++)
if (buffer[x] != ((unsigned char*)i)[x] && buffer[x] != '?' && buffer[x] != 'X')
break;

if (x == length)
{
delete[] buffer;
const char* s_offset = strstr(string, "X");

if (s_offset != NULL)
return *(unsigned long*)&((unsigned char*)i)[length - strlen(s_offset) / 2];
else
return *(unsigned long*)&((unsigned char*)i)[length + offset];
}
}
}

// Didn't find anything

delete[] buffer;
return NULL;
}
};