instavm/security-skills

mitm-find-enumerable

Find enumerable endpoints that leak data through iteration. Use when user asks about data scraping, bulk data access, or iterating through records.

First seen Mar 23, 2026

Installation

$ npx skills add instavm/security-skills --skill mitm-find-enumerable

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More details

Agent compatibility

Declared targets from SKILL.md / docs. Unmarked agents are not listed — the skill may still install via the CLI.

Claude Code Not declared
Cursor Not declared
Codex Not declared
GitHub Copilot Not declared
Windsurf Not declared
Gemini CLI Not declared
Cline Not declared
OpenCode Not declared

Repository health

Stars 84
Default branch main
Open issues 0
Status Active

Package contents

Files included with this skill beyond the listing page.

  • skill md SKILL.md 1,656 B
  • docs SUMMARY.md 175 B

History

  1. First seen on skills.sh
  2. First recorded snapshot · 58 installs

SKILL.md

Find Enumerable Endpoints

Analyze the mitmproxy dump (log.txt) for enumerable endpoints for: $ARGUMENTS

Requires: log.txt in the current directory. If it's missing, capture traffic first:
```bash
mitmdump --set flow_detail=3 2>&1 | tee log.txt
```

What Makes an Endpoint Enumerable

1. Sequential IDs

  • /api/user/1, /api/user/2, /api/user/3
  • /order/100001, /order/100002
  • /transaction/TXN00001

2. Predictable Patterns

  • Date-based: /report/2024-01-01
  • Timestamp: /log/1704067200
  • Simple increments in any parameter

3. Weak Encoding

  • Base64 numbers: /profile/MTIzNDU= (12345)
  • Hex: /data/0x1A2B
  • URL-safe base64

4. No Pagination Limits

  • /api/users?limit=999999
  • /search?count=all

Testing Commands

# Sequential iteration
for i in {1..100}; do
  curl -s "https://target.com/api/resource/$i" >> output.json
  sleep 0.5
done

# Base64 iteration
for i in {1000..1100}; do
  id=$(echo -n $i | base64)
  curl -s "https://target.com/api/resource/$id"
done

# Date iteration
for d in {01..31}; do
  curl -s "https://target.com/api/report/2024-01-$d"
done

Output Format

For each finding:

  • Endpoint: URL pattern
  • Parameter: What can be iterated
  • Pattern: Sequential/Base64/Date/etc.
  • Sample Range: Observed values
  • Data Exposed: What each iteration reveals
  • Bulk Test: curl command for mass extraction
  • Fix: Use UUIDs, add auth, rate limit