I have an exe file and a dll file. This exe file uses the dll to decode input file. This exe file is gui based and does not support command line execution.
So my requirement is to create a program which loads this dll and use the funciton to decode an input file so that I can use this program in some scripts.
The exe expects two inputs. Source file name and destination file name.
When I disassembled the exe, only 1 parameter is being passed to the dll function call, which is the source file name. I couldn't find how the destination file name is passed to the function.
Disassembly of dll function shows 2 exported functions.
assembly code for dll function from IDA is as follows
While calling the dll function from exe, the stack is as follows
From this much information, is it possible to identify the function prototype of the dll function.