> 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/sql-truncation-attack/sql-truncation-registration-pentesting-web.md).

# Registro de truncamento de SQL

## Truncamento de SQL:

Aqui está o **lista de endereços de e-mail** devemos tentar acessar:

<figure><img src="/files/0120622dc4561e8c346a74c0074350f962de91b5" alt=""><figcaption></figcaption></figure>

No painel de cadastro, se tentarmos **inserir** um endereço de e-mail, isso indica que o usuário já existe:

<figure><img src="/files/3364f0d34e67ce543e183b16a2d68c5ab60e7452" alt=""><figcaption></figcaption></figure>

Vemos no código HTML que o **banco de dados** limita o número de caracteres para 13:

<figure><img src="/files/7f5e5d3ca620b6f2907b97aaae16f0d6a2602296" alt=""><figcaption></figcaption></figure>

Inserimos o endereço de e-mail com espaços e um caractere adicional, modificando também o **maxlength** no código HTML para um número maior para nos permitir escrever:

<figure><img src="/files/d14ab2028baff279debbc33edc9ee89c0f56bd2f" alt=""><figcaption></figcaption></figure>

Conseguimos **registro** com o nome de usuário Jacob, porque o que aconteceu é que o e-mail foi **truncado**. Isso é o que entendemos por truncamento de espaços no final da string, é a exclusão automática desses espaços.

<figure><img src="/files/20251524dd3973e2a4a5501943542fc97aaefa3a" alt=""><figcaption></figcaption></figure>


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