I have wrote a lot of binary code library for AutoIt before. I also discover many ways to generate binary code for AutoIt in the past. However, all of them have limitation or need some extra effort.
Recently, I think I found the best and easiest way to generate the binary code. So I wrote this UDF, may be my last one about binary code.
Both AutoIt x86 and x64 version are supported.
Windows API and static variables can be use (code relocation supported).
Decompression at run-time with smallest footprint LZMA decoder.
Allocated memory blocks are released automatically.
Most C source code works without modification.
Two step or one step script generation, very easy to use.
How It Works:
The C source code must be compiled by MinGW GCC with "-S -masm=intel" option. Output is GAS syntax assembly file.
BinaryCall Tool is able to convert the GAS syntax assembly file (*.s) to FASM syntax (*.asm). During the conversion, global symbols will be stored as "Symbol Jump Table" at the head of the file. The output file should be able to be assembled to binary file under command line by FASM.EXE. This syntax conversion is step 1.
The step 2 is to assemble the file. BinaryCall Tool will use the embedded FASM to assemble every file twice to generate the relocation table. "BinaryCall.inc" will be included automatically before assembling to detect the Windows API and generate the "API Jump table". All the results will be compressed and converted to AutoIt script output.
There are two major functions in the output script. _BinaryCall_Create() function allocates memorys, decompress the binary, relocates the address in memory, and fills the "API Jump Table".
_BinaryCall_SymbolList() converts the "Symbol Jump Table" to memory addresses, and then store them as pointers in a DllStruct variable.
Finally, we can use DllCallAddress() to call the memory address stored in the DllStruct.
Step by Step Tutorial:
Write C source code:#include <windows.h>
MessageBox(0, "Hello", "Welcome Message", 1);
Use GCC MinGW 32/64 to compile the source code:
gcc -S -masm=intel -m32 MessageBox.c
Use BinaryCall Tool "GAS2AU3 Converter", select "MessageBox.s":
If Not @AutoItX64 Then
Local $Code = '...'
Local $Reloc = '...'
Local $Symbol = ["main"]
Local $CodeBase = _BinaryCall_Create($Code, $Reloc)
If @Error Then Exit
Local $SymbolList = _BinaryCall_SymbolList($CodeBase, $Symbol)
If @Error Then Exit
Paste the output script, call the main() in AutoIt:
; Paste output here
DllCallAddress("none:cdecl", DllStructGetData($SymbolList, "main"))
Try to run it!
A lot of improvement for GAS2ASM converter and FASM header file.
Add many C Run-Time library as inline asm subroutines.
Add command-line to argc/argv parser for easy calling main() function.
Add ability to redirect stdio.
More C source code can work without modification in this version.
Following open source projects are tested.
And Yes, they can run as binary code library in AutoIt now.
PuTTY beta 0.63
Dynamic-link library (DLL) calling is supported now.
If the C program requires a DLL file to run, just put it together with the source file. BinaryCall Tool will searches *.dll and exports all the symbols in these DLL files automatically. Of course, you need these DLL files when run the output script. However, it also works if you loaded them by last version of MemoryDll UDF.
To add more Windows API library easily by editing the ini file.
Better error handling and more error messages in output script.
Add zero padding to avoid short jumps that crash the relocation table.
BinaryCall Tool accepts drag and drop files now.
Some small bug fixed.