Files
Serdtse-Sysoly/qualifiers/chameleon-line-dotnet-reverse-easy/solve/solve.py
T
2026-09-17 00:50:07 +03:00

29 lines
1.3 KiB
Python

#!/usr/bin/env python3
from pathlib import Path
import argparse, base64, hashlib, json, lzma, marshal, os, plistlib, re, struct, subprocess, sys, zipfile, zlib
def xor(data, key):
return bytes(b ^ key[i % len(key)] for i, b in enumerate(data))
def find_after(data, marker):
off = data.index(marker) + len(marker)
ln = struct.unpack_from('<I', data, off)[0]
off += 4
return data[off:off+ln]
def utf16_strings(data):
vals = []
for m in re.finditer(rb'(?:[ -~]\x00){8,}', data):
vals.append(m.group(0).decode('utf-16le'))
return vals
def main():
ap = argparse.ArgumentParser(); ap.add_argument('dll', nargs='?', default='../public/ChameleonLine.dll')
args = ap.parse_args(); data = Path(args.dll).read_bytes(); vals = utf16_strings(data)
enc = next(v[6:] for v in vals if v.startswith('CFGv2:'))
key = next(v for v in vals if re.fullmatch(r'[0-9a-f]{32}', v) and v.startswith('0011'))
iv = next(v for v in vals if re.fullmatch(r'[0-9a-f]{32}', v) and v.startswith('1021'))
p = subprocess.run(['openssl','enc','-d','-aes-128-cbc','-K',key,'-iv',iv,'-nosalt','-A','-base64'],
input=enc, text=True, stdout=subprocess.PIPE, check=True)
print(json.loads(p.stdout)['export'])
if __name__ == '__main__': main()