# f0ng/captcha-killer-modified

captcha-killer的修改版，支持关键词识别base64编码的图片，添加免费ocr库，用于验证码爆破，适配新版Burpsuite

Repository: https://github.com/f0ng/captcha-killer-modified
Canonical: https://ross.abutalabs.com/products/captcha-killer-modified
Homepage: https://f0ng.github.io/2022/03/24/burp%E9%AA%8C%E8%AF%81%E7%A0%81%E7%88%86%E7%A0%B4%E6%8F%92%E4%BB%B6%E4%BA%8C%E6%94%B9/
Language: Java
License Family: other
Topics: burp-extensions, burp, burp-plugin
Last push: 2025-08-26T11:28:03+00:00

## Health v2 (maintenance only)
Score: 41/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 38, release rhythm 10, longevity 100
- inputs: {"age_days": 1629, "days_push": 372, "days_rel": 391, "gap_med": null, "n_releases_24m": 1}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1948, forks 179 (observed 2026-08-28T04:05:58.026865+00:00)

## What it is
A modified version of the captcha-killer Burp Suite extension that intercepts captcha images from HTTP responses and recognizes them using the free ddddocr OCR library. It supports base64/data:image encoded captchas, keyword-based captcha extraction, and is adapted for newer Burp Suite and JDK versions.

## Use cases
- automate captcha solving during burp intruder brute-force attacks
- recognize base64 data:image captchas in login forms
- extract captcha images from http responses by keyword
- test captcha-protected login endpoints during authorized pentests
- ocr captcha recognition without paid api services

## When to choose
- you need a free, offline captcha OCR solution integrated into Burp Suite
- target captchas are returned as base64 data URIs that the original captcha-killer cannot handle
- you run a modern Burp Suite with a newer JDK where the original plugin breaks

## When to avoid
- you need high-accuracy recognition of complex captchas beyond ddddocr's ~85% success rate
- you require a tool with a clear open-source license (this repo has none)
- you are not working within Burp Suite or lack a JVM environment

## Facets
- artifact type: plugin
- maturity: active
- function: ocr, security, penetration-testing, image-processing, developer-tools
- domain: security, penetration-testing, browser-extensions, image-processing
- platform: cross-platform, jvm
- tags: burp-extension, captcha-recognition, captcha-bypass, ddddocr, intruder, penetration-testing-tool, java

## Member repositories
- f0ng/captcha-killer-modified (main) score 41

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:58.026865+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:06:59.113309+00:00, confidence not recorded.
  - readme: https://github.com/f0ng/captcha-killer-modified (fetched 2026-08-28T04:05:58.026865+00:00, sha 202317176c03)
  - homepage: https://f0ng.github.io/2022/03/24/burp%E9%AA%8C%E8%AF%81%E7%A0%81%E7%88%86%E7%A0%B4%E6%8F%92%E4%BB%B6%E4%BA%8C%E6%94%B9/ (fetched 2026-08-29T10:46:40.899256+00:00, sha 8feb5d385cbd)
- Data as of 2026-08-30T08:39:29.467469+00:00.