我想在另一个进程中调用一个函数并通过 createremotethread 发送超过 1 个参数。
现在,我可以通过发送内联汇编来做到这一点,但我不知道足够的汇编来做到这一点。此外,我无权访问远程进程源代码。
我在考虑使用:
[StructLayout(LayoutKind.Sequential, Pack=1)]
public struct RemoteThreadParams
{
[MarshalAs(UnmanagedType.I4)]
public int Param1;
[MarshalAs(UnmanagedType.I4)]
public int Param2;
}
但据我了解,远程进程必须知道如何处理。
有没有一种简单的方法可以向不包含任何程序集的远程进程发送超过 1 个参数?
编辑:
这就是我目前试图解决的方法,但我内存不足异常,我真的不明白我做错了什么。
我们在远程进程中的 0x64D480 处有我们的函数 ptr,这是从 IDA pro 中获取的程序集。
// FUNCTION PTR IS 0x64D480
.text:0064D480 sub_64D480 proc near ; CODE XREF: sub_4DA7F0+3Ap
.text:0064D480 ; sub_64D550+Bp ...
.text:0064D480
.text:0064D480 var_C = dword ptr -0Ch // arg1
.text:0064D480 arg_0 = dword ptr 4 // arg2
.text:0064D480
.text:0064D480 push esi
.text:0064D481 push edi
.text:0064D482 mov edi, [esp+8+arg_0]
.text:0064D486 push edi
.text:0064D487 mov esi, ecx
.text:0064D489 call sub_64D330
.text:0064D48E test al, al
.text:0064D490 jnz short loc_64D497
.text:0064D492 pop edi
.text:0064D493 pop esi
.text:0064D494 retn 4
不应该这样调用函数吗:
[StructLayout(LayoutKind.Sequential, Pack=1)]
public struct RemoteThreadParams
{
[MarshalAs(UnmanagedType.I4)]
public int Param1;
[MarshalAs(UnmanagedType.I4)]
public int Param2;
}
void CallFunction(IntPtr _functionPtr, RemoteThreadParams _parameters)
{
// Allocate some native heap memory in your process big enough to store the parameter data
IntPtr iptrtoparams = Marshal.AllocHGlobal(Marshal.SizeOf(_parameters));
// Copies the data in your structure into the native heap memory just allocated
Marshal.StructureToPtr(_parameters, iptrtoparams, false);
// Use to alloc "committed" memory that is addressable by other process
IntPtr iptrremoteallocatedmemory = VirtualAllocEx(this.handle, IntPtr.Zero, (uint)Marshal.SizeOf(_parameters), AllocationType.Commit, MemoryProtection.ExecuteReadWrite);
UIntPtr bytesWritten = UIntPtr.Zero;
// Copy from local process memory to the memory of the remote process
WriteProcessMemory(this.handle, iptrremoteallocatedmemory, iptrtoparams, (uint)Marshal.SizeOf(_parameters), out bytesWritten);
//Free up memory
Marshal.FreeHGlobal(iptrtoparams);
//thread id and return value in case we need it for later
uint iThreadId;
uint returnValue = 0;
IntPtr hThread = CreateRemoteThread(this.handle, IntPtr.Zero, 0, _functionPtr, iptrtoparams, 0, out iThreadId);
WaitForSingleObject(hThread, 0xFFFFFFFF);
GetExitCodeThread(hThread, out returnValue);
CloseHandle(hThread);
CloseHandle(this.handle);
}