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Beacon_metadata_RSA_Decrypt.py
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Beacon_metadata_RSA_Decrypt.py
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'''
Beacon元数据
'''
import hashlib
import M2Crypto
import base64
import hexdump
PRIVATE_KEY = """
-----BEGIN RSA PRIVATE KEY-----
{}
-----END RSA PRIVATE KEY-----
"""
encode_data = ""
base64_key = ""
pubkey = M2Crypto.RSA.load_key_string(PRIVATE_KEY.format(base64_key).encode())
ciphertext = pubkey.private_decrypt(base64.b64decode(encode_data), M2Crypto.RSA.pkcs1_padding)
def isFlag(var, flag):
return (var & flag) == flag
def toIP(var):
var2 = (var & -16777216) >> 24
var4 = (var & 16711680) >> 16
var6 = (var & 65280) >> 8
var8 = var & 255
return str(var2) + "." + str(var4) + "." + str(var6) + "." + str(var8)
def getName(var0):
if var0 == 37:
return "IBM037"
elif var0 == 437:
return "IBM437"
elif var0 == 500:
return "IBM500"
elif var0 == 708:
return "ISO-8859-6"
elif var0 == 709:
return ""
elif var0 == 710:
return ""
elif var0 == 720:
return "IBM437"
elif var0 == 737:
return "x-IBM737"
elif var0 == 775:
return "IBM775"
elif var0 == 850:
return "IBM850"
elif var0 == 852:
return "IBM852"
elif var0 == 855:
return "IBM855"
elif var0 == 857:
return "IBM857"
elif var0 == 858:
return "IBM00858"
elif var0 == 860:
return "IBM860"
elif var0 == 861:
return "IBM861"
elif var0 == 862:
return "IBM862"
elif var0 == 863:
return "IBM863"
elif var0 == 864:
return "IBM864"
elif var0 == 865:
return "IBM865"
elif var0 == 866:
return "IBM866"
elif var0 == 869:
return "IBM869"
elif var0 == 870:
return "IBM870"
elif var0 == 874:
return "x-windows-874"
elif var0 == 875:
return "IBM875"
elif var0 == 932:
return "Shift_JIS"
elif var0 == 936:
return "x-mswin-936"
elif var0 == 949:
return "x-windows-949"
elif var0 == 950:
return "Big5"
elif var0 == 1026:
return "IBM1026"
elif var0 == 1047:
return "IBM1047"
elif var0 == 1140:
return "IBM01140"
elif var0 == 1141:
return "IBM01141"
elif var0 == 1142:
return "IBM01142"
elif var0 == 1143:
return "IBM01143"
elif var0 == 1144:
return "IBM01144"
elif var0 == 1145:
return "IBM01145"
elif var0 == 1146:
return "IBM01146"
elif var0 == 1147:
return "IBM01147"
elif var0 == 1148:
return "IBM01148"
elif var0 == 1149:
return "IBM01149"
elif var0 == 1200:
return "UTF-16LE"
elif var0 == 1201:
return "UTF-16BE"
elif var0 == 1250:
return "windows-1250"
elif var0 == 1251:
return "windows-1251"
elif var0 == 1252:
return "windows-1252"
elif var0 == 1253:
return "windows-1253"
elif var0 == 1254:
return "windows-1254"
elif var0 == 1255:
return "windows-1255"
elif var0 == 1256:
return "windows-1256"
elif var0 == 1257:
return "windows-1257"
elif var0 == 1258:
return "windows-1258"
elif var0 == 1361:
return "x-Johab"
elif var0 == 10000:
return "x-MacRoman"
elif var0 == 10001:
return ""
elif var0 == 10002:
return ""
elif var0 == 10003:
return ""
elif var0 == 10004:
return "x-MacArabic"
elif var0 == 10005:
return "x-MacHebrew"
elif var0 == 10006:
return "x-MacGreek"
elif var0 == 10007:
return "x-MacCyrillic"
elif var0 == 10008:
return ""
elif var0 == 10010:
return "x-MacRomania"
elif var0 == 10017:
return "x-MacUkraine"
elif var0 == 10021:
return "x-MacThai"
elif var0 == 10029:
return "x-MacCentralEurope"
elif var0 == 10079:
return "x-MacIceland"
elif var0 == 10081:
return "x-MacTurkish"
elif var0 == 10082:
return "x-MacCroatian"
elif var0 == 12000:
return "UTF-32LE"
elif var0 == 12001:
return "UTF-32BE"
elif var0 == 20000:
return "x-ISO-2022-CN-CNS"
elif var0 == 20001:
return ""
elif var0 == 20002:
return ""
elif var0 == 20003:
return ""
elif var0 == 20004:
return ""
elif var0 == 20005:
return ""
elif var0 == 20105:
return ""
elif var0 == 20106:
return ""
elif var0 == 20107:
return ""
elif var0 == 20108:
return ""
elif var0 == 20127:
return "US-ASCII"
elif var0 == 20261:
return ""
elif var0 == 20269:
return ""
elif var0 == 20273:
return "IBM273"
elif var0 == 20277:
return "IBM277"
elif var0 == 20278:
return "IBM278"
elif var0 == 20280:
return "IBM280"
elif var0 == 20284:
return "IBM284"
elif var0 == 20285:
return "IBM285"
elif var0 == 20290:
return "IBM290"
elif var0 == 20297:
return "IBM297"
elif var0 == 20420:
return "IBM420"
elif var0 == 20423:
return ""
elif var0 == 20424:
return "IBM424"
elif var0 == 20833:
return ""
elif var0 == 20838:
return "IBM-Thai"
elif var0 == 20866:
return "KOI8-R"
elif var0 == 20871:
return "IBM871"
elif var0 == 20880:
return ""
elif var0 == 20905:
return ""
elif var0 == 20924:
return ""
elif var0 == 20932:
return "EUC-JP"
elif var0 == 20936:
return "GB2312"
elif var0 == 20949:
return ""
elif var0 == 21025:
return "x-IBM1025"
elif var0 == 21027:
return ""
elif var0 == 21866:
return "KOI8-U"
elif var0 == 28591:
return "ISO-8859-1"
elif var0 == 28592:
return "ISO-8859-2"
elif var0 == 28593:
return "ISO-8859-3"
elif var0 == 28594:
return "ISO-8859-4"
elif var0 == 28595:
return "ISO-8859-5"
elif var0 == 28596:
return "ISO-8859-6"
elif var0 == 28597:
return "ISO-8859-7"
elif var0 == 28598:
return "ISO-8859-8"
elif var0 == 28599:
return "ISO-8859-9"
elif var0 == 28603:
return "ISO-8859-13"
elif var0 == 28605:
return "ISO-8859-15"
elif var0 == 29001:
return ""
elif var0 == 38598:
return "ISO-8859-8"
elif var0 == 50220:
return "ISO-2022-JP"
elif var0 == 50221:
return "ISO-2022-JP-2"
elif var0 == 50222:
return "ISO-2022-JP"
elif var0 == 50225:
return "ISO-2022-KR"
elif var0 == 50227:
return "ISO-2022-CN"
elif var0 == 50229:
return "ISO-2022-CN"
elif var0 == 50930:
return "x-IBM930"
elif var0 == 50931:
return ""
elif var0 == 50933:
return "x-IBM933"
elif var0 == 50935:
return "x-IBM935"
elif var0 == 50936:
return ""
elif var0 == 50937:
return "x-IBM937"
elif var0 == 50939:
return "x-IBM939"
elif var0 == 51932:
return "EUC-JP"
elif var0 == 51936:
return "GB2312"
elif var0 == 51949:
return "EUC-KR"
elif var0 == 51950:
return ""
elif var0 == 52936:
return "GB2312"
elif var0 == 54936:
return "GB18030"
elif var0 == 57002:
return "x-ISCII91"
elif var0 == 57003:
return "x-ISCII91"
elif var0 == 57004:
return "x-ISCII91"
elif var0 == 57005:
return "x-ISCII91"
elif var0 == 57006:
return "x-ISCII91"
elif var0 == 57007:
return "x-ISCII91"
elif var0 == 57008:
return "x-ISCII91"
elif var0 == 57009:
return "x-ISCII91"
elif var0 == 57010:
return "x-ISCII91"
elif var0 == 57011:
return "x-ISCII91"
elif var0 == 65000:
return ""
elif var0 == 65001:
return "UTF-8"
if ciphertext[0:4] == b'\x00\x00\xBE\xEF':
# 16
raw_aes_keys = ciphertext[8:24]
# 2
var9 = ciphertext[24:26]
var9 = int.from_bytes(var9, byteorder='little', signed=False)
var9 = getName(var9)
# 2
var10 = ciphertext[26:28]
var10 = int.from_bytes(var10, byteorder='little', signed=False)
var10 = getName(var10)
# 4
id = ciphertext[28:32]
id = int.from_bytes(id, byteorder='big', signed=False)
print("Beacon id:{}".format(id))
# 4
pid = ciphertext[32:36]
pid = int.from_bytes(pid, byteorder='big', signed=False)
print("pid:{}".format(pid))
# 2
port = ciphertext[36:38]
port = int.from_bytes(port, byteorder='big', signed=False)
print("port:{}".format(port))
# 1
flag = ciphertext[38:39]
flag = int.from_bytes(flag, byteorder='big', signed=False)
# print(flag)
if isFlag(flag, 1):
barch = ""
pid = ""
is64 = ""
elif isFlag(flag, 2):
barch = "x64"
else:
barch = "x86"
if isFlag(flag, 4):
is64 = "1"
else:
is64 = "0"
if isFlag(flag, 8):
bypassuac = "True"
else:
bypassuac = "False"
print("barch:" + barch)
print("is64:" + is64)
print("bypass:" + bypassuac)
# 2
var_1 = ciphertext[39:40]
var_2 = ciphertext[40:41]
var_1 = int.from_bytes(var_1, byteorder='big', signed=False)
var_2 = int.from_bytes(var_2, byteorder='big', signed=False)
windows_var = str(var_1) + "." + str(var_2)
print("windows var:" + windows_var)
# 2
windows_build = ciphertext[41:43]
windows_build = int.from_bytes(windows_build, byteorder='big', signed=False)
print("windows build:{}".format(windows_build))
# 4
x64_P = ciphertext[43:47]
# 4
ptr_gmh = ciphertext[47:51]
# 4
ptr_gpa = ciphertext[51:55]
# if ("x64".equals(this.barch)) {
# this.ptr_gmh = CommonUtils.join(var10, this.ptr_gmh)
# this.ptr_gpa = CommonUtils.join(var10, this.ptr_gpa)
# }
#
# this.ptr_gmh = CommonUtils.bswap(this.ptr_gmh)
# this.ptr_gpa = CommonUtils.bswap(this.ptr_gpa)
# 4
intz = ciphertext[55:59]
intz = int.from_bytes(intz, byteorder='little', signed=False)
intz = toIP(intz)
if intz == "0.0.0.0":
intz = "unknown"
print("host:" + intz)
if var9 == None:
ddata = ciphertext[59:len(ciphertext)].decode("ISO8859-1")
else:
# ??x-mswin-936
# ddata = ciphertext[59:len(ciphertext)].decode(var9)
ddata = ciphertext[59:len(ciphertext)].decode("ISO8859-1")
ddata = ddata.split("\t")
if len(ddata) > 0:
computer = ddata[0]
if len(ddata) > 1:
username = ddata[1]
if len(ddata) > 2:
process = ddata[2]
print("PC name:" + computer)
print("username:" + username)
print("process name:" + process)
raw_aes_hash256 = hashlib.sha256(raw_aes_keys)
digest = raw_aes_hash256.digest()
aes_key = digest[0:16]
hmac_key = digest[16:]
print("AES key:{}".format(aes_key.hex()))
print("HMAC key:{}".format(hmac_key.hex()))
print(hexdump.hexdump(ciphertext))