SwiftyProxy: A Swift repository from HoaPham98

Features

Network Interception: Capture HTTP/HTTPS requests and responses.
Detailed Logging: View all intercepted network traffic, including headers and body.
User-Friendly Interface: Simple and intuitive interface to monitor network activity.

Todos

Brotli Decryption: Automatically decompress Brotli-encoded responses to display human-readable content.
Request Modification: Allow users to edit and resend intercepted network requests.
Improve UI

Basic Usage

Create certificates (See below)
Install cerificates in Mac and iOS Simulator
Configure certificates in SwiftyProxy
Start server (First button) and set wifi proxy (Second button)
Start watching your network traffic!

Creating certificates

Generate the Root Certificate (Root CA)

This certificate will be used to sign the server and client certificates. It must be installed on both the Mac and the simulator.

Generate the private key for the Root CA

openssl genrsa -out nacho-root-key.pem 4096

Generate the Root CA certificate

openssl req -x509 -new -nodes -key nacho-root-key.pem -sha256 -days 825 -out nacho-root-ca.pem -subj "/C=US/ST=Delaware/L=Wilmington/O=Nacho LLC/CN=Nacho Root CA"

Generate Certificates for the Server

This certificate will be used by the MITM proxy.

Generate the server's private key

openssl genrsa -out nacho-server-key.pem 4096

Create a configuration file for the server certificate (nacho-server.conf)

cat > nacho-server.conf <<EOF
[req]
default_bits = 4096
prompt = no
default_md = sha256
distinguished_name = dn
req_extensions = req_ext

[dn]
C = AR
ST = Buenos Aires
L = Buenos Aires
O = Nacho
CN = jsonplaceholder.typicode.com

[req_ext]
subjectAltName = @alt_names

[alt_names]
DNS.1 = jsonplaceholder.typicode.com
EOF

Generate a CSR (Certificate Signing Request) for the server

openssl req -new -key nacho-server-key.pem -config nacho-server.conf -out nacho-server.csr

Sign the server certificate with the Root CA

openssl x509 -req -in nacho-server.csr -CA nacho-root-ca.pem -CAkey nacho-root-key.pem -CAcreateserial -out nacho-server.crt -days 825 -sha256 -extfile nacho-server.conf -extensions req_ext

Certificate Installation

Mac and Simulator: Install the nacom-root-ca.pem certificate on both the Mac and the simulator. This will be the root certificate that both will trust.

MITM Proxy: Use the nacho-server.crt and nacho-server-key.pem certificates in SwiftyProxyCore.

TIP

Enable Trust in the Simulator
Ensure that the root certificate (nacom-root-ca.pem) is marked as trusted in both the simulator and the Mac’s settings.

In file SwiftyProxyCore.swift inside the SwiftyProxyCore Package,

let serverCertPath = """
    """

let serverKeyPath = """
    """

Contributing

Contributions are welcome! Please fork this repository and submit a pull request with your improvements.

Contact

For any questions, feel free to reach out via issues or by contacting in LinkedIn

HoaPham98/SwiftyProxy