SimpleShellcodeInjector/SimpleShellcodeInjector.c at master · SuperDolby/SimpleShellcodeInjector · GitHub

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#include <stdio.h>

#include <Windows.h>

int main(int argc, char *argv[]) {

unsigned int char_in_hex;

char *shellcode=argv[1];

unsigned int iterations=strlen(shellcode);

unsigned int memory_allocation = strlen(shellcode) / 2;

for(unsigned int j=0; j<iterations-1;j++){

if(shellcode[j]=='x'){

shellcode[j]='0';

}

for(unsigned int i = 0; i< iterations-1; i++) {

sscanf(shellcode+2*i, "%2X", &char_in_hex);

shellcode[i] = (char)char_in_hex;

}

void *exec = VirtualAlloc(0, memory_allocation, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);

memcpy(exec, shellcode, memory_allocation);

DWORD ignore;

VirtualProtect(exec, memory_allocation, PAGE_EXECUTE, &ignore);

printf("11");

(*(void (*)()) exec)();

return 0;

}