Files
SuperMega/phases/assembler.py
T
2024-02-17 14:19:32 +00:00

58 lines
1.8 KiB
Python

import logging
from model import *
from config import config
from observer import observer
from pehelper import *
from helper import *
logger = logging.getLogger("Assembler")
def asm_to_shellcode(asm_in: FilePath, build_exe: FilePath, shellcode_out: FilePath):
"""Takes ASM source file asm_in, compiles it into build_exe, extracts its code section and write into shellcode_out"""
logger.info("--[ Assemble to exe: {} -> {} -> {}".format(asm_in, build_exe, shellcode_out))
run_process_checkret([
config.get("path_ml64"),
asm_in,
"/link",
"/OUT:{}".format(build_exe),
"/entry:AlignRSP"
])
if not os.path.isfile(build_exe):
raise Exception("Compiling failed")
code = extract_code_from_exe(build_exe)
observer.add_code("carrier_shc", code)
with open(shellcode_out, 'wb') as f:
f.write(code)
def merge_loader_payload(
shellcode_in: FilePath,
shellcode_out: FilePath,
payload_data: bytes,
decoder_style: DecoderStyle
):
logger.info("--[ Merge stager with payload -> {}".format(
shellcode_out))
with open(shellcode_in, 'rb') as input1:
data_stager = input1.read()
if decoder_style == DecoderStyle.PLAIN_1:
# Nothing to do
pass
elif decoder_style == DecoderStyle.XOR_1:
xor_key = 0x42
logger.info("---[ XOR payload with key 0x{:x}".format(xor_key))
payload_data = bytes([byte ^ xor_key for byte in payload_data])
logger.info("---[ Size: Stager: {} and Payload: {} Sum: {} ".format(
len(data_stager), len(payload_data), len(data_stager)+len(payload_data)))
with open(shellcode_out, 'wb') as output:
# append them
data = data_stager + payload_data
output.write(data)
observer.add_code("loader_shc", data)