O.P. RE: creating an asm opcode
Okay I can access the location of the allocated function ( using interop.alloc) i have viewed it will Ollydbg and it is definitely copied there correctly. The way i am calling it is as you say replacing a current opp with a JMP to the allocated function. The problem comes in creating the JMP code. If you could possibly give me some help in creating this as my attempts so far have failed, even if its C or C++ code i dont mind as i can easily implement this into a dll that i can call with the interop object
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