最终在堆上执行了My_function方法。
//
void Run_my_function()
{
int x=1;//8
int y=2;
char str_a[]=" HELLO MY_FOUNCTION ! ";
char str_b[]=" Hello my_function ! ";
void* (__cdecl *_memcpy )( void *dest, const void *src, size_t count );
int (__cdecl *_sprintf )( char *buffer, const char *format, ... );
void* (__cdecl *_malloc )( size_t size );
void (__cdecl *_free )( void *memblock );
size_t (__cdecl *_strlen )( const char *string );
int (__stdcall* _MessageBox)(HWND hWnd, LPCTSTR lpText,
LPCTSTR lpCaption, UINT uType);
_memcpy=memcpy;
_sprintf=sprintf;
_malloc=malloc;
_free=free;
_strlen=strlen;
_MessageBox=MessageBox;
void ( __stdcall *_my_function)(int x,
int y,
char* str_a,
char* str_b,
void* (__cdecl *_memcpy )( void *dest,
const void *src, size_t count ),
int (__cdecl *_sprintf )( char *buffer, const char *format, ... ),
void* (__cdecl *_malloc )( size_t size ),
void (__cdecl *_free )( void *memblock ),
size_t (__cdecl *_strlen )( const char *string ),
int (__stdcall* _MessageBox)(HWND hWnd, LPCTSTR lpText,
LPCTSTR lpCaption, UINT uType)
);
_my_function=(void ( __stdcall *)(int x,
int y,
char* str_a,
char* str_b,
void* (__cdecl *_memcpy )( void *dest,
const void *src, size_t count ),
int (__cdecl *_sprintf )( char *buffer, const char *format, ... ),
void* (__cdecl *_malloc )( size_t size ),
void (__cdecl *_free )( void *memblock ),
size_t (__cdecl *_strlen )( const char *string ),
int (__stdcall* _MessageBox)(HWND hWnd, LPCTSTR lpText,
LPCTSTR lpCaption, UINT uType)
)) &p_my_function[0];
_my_function(x,
y,
str_a,
str_b,
_memcpy,
_sprintf,
_malloc,
_free,
_strlen,
_MessageBox
);
}
//
void Run_my_function()
{
int x=1;//8
int y=2;
char str_a[]=" HELLO MY_FOUNCTION ! ";
char str_b[]=" Hello my_function ! ";
void* (__cdecl *_memcpy )( void *dest, const void *src, size_t count );
int (__cdecl *_sprintf )( char *buffer, const char *format, ... );
void* (__cdecl *_malloc )( size_t size );
void (__cdecl *_free )( void *memblock );
size_t (__cdecl *_strlen )( const char *string );
int (__stdcall* _MessageBox)(HWND hWnd, LPCTSTR lpText,
LPCTSTR lpCaption, UINT uType);
_memcpy=memcpy;
_sprintf=sprintf;
_malloc=malloc;
_free=free;
_strlen=strlen;
_MessageBox=MessageBox;
void ( __stdcall *_my_function)(int x,
int y,
char* str_a,
char* str_b,
void* (__cdecl *_memcpy )( void *dest,
const void *src, size_t count ),
int (__cdecl *_sprintf )( char *buffer, const char *format, ... ),
void* (__cdecl *_malloc )( size_t size ),
void (__cdecl *_free )( void *memblock ),
size_t (__cdecl *_strlen )( const char *string ),
int (__stdcall* _MessageBox)(HWND hWnd, LPCTSTR lpText,
LPCTSTR lpCaption, UINT uType)
);
_my_function=(void ( __stdcall *)(int x,
int y,
char* str_a,
char* str_b,
void* (__cdecl *_memcpy )( void *dest,
const void *src, size_t count ),
int (__cdecl *_sprintf )( char *buffer, const char *format, ... ),
void* (__cdecl *_malloc )( size_t size ),
void (__cdecl *_free )( void *memblock ),
size_t (__cdecl *_strlen )( const char *string ),
int (__stdcall* _MessageBox)(HWND hWnd, LPCTSTR lpText,
LPCTSTR lpCaption, UINT uType)
)) &p_my_function[0];
_my_function(x,
y,
str_a,
str_b,
_memcpy,
_sprintf,
_malloc,
_free,
_strlen,
_MessageBox
);
}
//
小结
如果你想要隐藏一些关键的重要信息，那么你不应该调用MessageBox API函数。对这种保护的抵抗是没有什么意义的。当然，这也许并不会增加。当今大部分程序都有这样的需求，包括动态异步解码、各种复杂因素中比较的结果和一些在键值中直接放入了重要信息的情形。由此，自产生代码技术变得十分重要，以致于它得到了Antidebug LIB的采纳。这篇文章的目的不是为你提供一份保护程序的方案（黑客可以学习），而是证明并展示对于在Windows控制下创建自产生代码的可能性理论。对于如何使用这就是你的任务了。
