Stuff

#include <cstdlib>#include <iostream>#include <windows.h>using namespace std;int NOPMem (void* aNOP,int szNOP){    if(aNOP==0||szNOP==0)return -1;    char* p=(char*)aNOP;    int i=szNOP;    while (i>0){          *p=0x90;          p = p+1;          i--;          }    return 0;}int CopyMem (void* aSource,void* aDestination,int szMem){    if (aSource==0||aDestination==0||szMem==0)return -1;    int i=szMem;    char* p1=(char*)aSource;    char* p2=(char*)aDestination;    while (i>0){          *p2=*p1;          i--;          p2=p2+1;          p1=p1+1;          }    return 0;}int SetJMP(void* aJMP,void* aTo){    if(aJMP==0||aTo==0)return -1;    char* pcharf=(char*)aJMP;    *pcharf=0xE9;    unsigned long nextinstruction=(unsigned long)pcharf+5;    unsigned long offset = (unsigned long)aTo-nextinstruction;    unsigned long* poffset=(unsigned long*)aJMP+1;    *poffset=offset;    return 0;}int SetCALL(void* aCALL,void* aTo){    if(aCALL==0||aTo==0)return -1;    char* pcharf=(char*)aCALL;    *pcharf=0xE8;    unsigned long nextinstruction=(unsigned long)pcharf+5;    unsigned long offset = (unsigned long)aTo-nextinstruction;    unsigned long* poffset=(unsigned long*)aCALL+1;    *poffset=offset;    return 0;}int HookFuncJMP(void* aFunc,void* aNewFunc,void* pOldBytes,int szOldBytes){    if(aFunc==0||aNewFunc==0||pOldBytes==0||szOldBytes<5)return -1;    if(CopyMem(aFunc,pOldBytes,szOldBytes)==-1)return -1;    if(SetJMP(aFunc,aNewFunc)==-1)return -1;    int excess=szOldBytes-5;unsigned long taFunc=(unsigned long)aFunc+5;    if (excess>0)if(NOPMem((void*)taFunc,excess)==-1)return -1;    return 0;   }int HookFuncCALL(void* aFunc,void* aNewFunc,void* pOldBytes,int szOldBytes){    if(aFunc==0||aNewFunc==0||pOldBytes==0||szOldBytes<5)return -1;    if(CopyMem(aFunc,pOldBytes,szOldBytes)==-1)return -1;    if(SetCALL(aFunc,aNewFunc)==-1)return -1;    int excess=szOldBytes-5;unsigned long taFunc=(unsigned long)aFunc+5;    if (excess>0)if(NOPMem((void*)taFunc,excess)==-1)return -1;    return 0;   }int main(int argc, char *argv[]){    char lolt[5];    DWORD oldp;    HMODULE lol1 = GetModuleHandle("kernel32.dll");    FARPROC lol2= GetProcAddress(lol1,"WriteProcessMemory");    BOOL lol = VirtualProtect((PVOID)lol2,5,PAGE_EXECUTE_READWRITE,&oldp);    int cook = HookFuncJMP((void*)lol2,(void*)&HookFuncCALL,&lolt,5);    system("PAUSE");    return EXIT_SUCCESS;}