> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/pt-br/web-vulnerabilities/type-juggling-attack/type-juggling-md5-et-pentesting-web.md).

# Manipulação de tipos MD5

> Se a senha MD5 começar com `0e`, ela é armazenada em uma variável e se torna vulnerável com igualdade frouxa por causa de **números mágicos** que todos são avaliados de forma semelhante. Por exemplo, em PHP, uma string que começa com um dígito é convertida automaticamente em um número quando usada em uma comparação numérica. Como resultado, se o atacante fornecer uma string que começa com zero, como `00123`, o programa a converte para o inteiro `123`.

<figure><img src="/files/e9ec783a35802165f74e28e3e3729b446ea37852" alt="" width="437"><figcaption></figcaption></figure>

Aqui está um exemplo de senhas com "números mágicos":

<figure><img src="/files/584c4d563e342029d000a020a7fb36fbd8f96b31" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://hacking-notes.jord4n.pro/pt-br/web-vulnerabilities/type-juggling-attack/type-juggling-md5-et-pentesting-web.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.