HTTP Proxy Override
Set up a HTTP proxy forwarding for your app. Usually with combination of Burp Suite web proxy.
OS Linux - Terminal
The app or a library has to be coded to reflect these specific environment variables. Otherwise, explore a specific app configuration or CLI parameters for HTTP proxy features.
export http_proxy='127.0.0.1:8080'
export https_proxy='127.0.0.1:8080'
You can unset back the variables by
unset http_proxy
unset https_proxy
Metasploit
msf> set Proxies http:127.0.0.1:8080
There are different types of proxies you can define.
set Proxies socks4:127.0.0.1:5555
set Proxies socks5:127.0.0.1:5555
Java (VM)
Forward HTTP/HTTPS traffic for your Java app to Burp Suite Proxy. The same analogy applies to FTP, explore the following Java documentation.
HTTP
Before you start your java application, add the following parameters to JVM.
java -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=8080
HTTP & HTTPS
"%JAVA_HOME%\bin\java" …
-Dhttp.proxyHost=127.0.0.1
-Dhttp.proxyPort=8080
-Dhttps.proxyHost=127.0.0.1
-Dhttps.proxyPort=8080
-Dhttp.nonProxyHosts=localhost
-Djavax.net.ssl.trustStore=C:\Users\Administrator\.keystore
-Djavax.net.ssl.trustStorePassword=changeme
Create Java Keystore
Briefly, Java Key Store (JKS) is a secured storage protected by password (trustStorePassword).
cd %JAVA_HOME%/bin
keytool.exe -keystore C:/Users/Administrator/.keystore -genkey -alias client
Import certificate (CER or DER)
keytool.exe -importcert -file certificate.cer -keystore C:\Users\Administrator\.keystore -alias "BurpCert"
Visual Studio 2015|2019
Find VS software home (installation directory)
%ProgramFiles%\Microsoft Visual Studio\2019\Enterprise\Common7\IDE%
edit devenv.exe.config file
<system.net>
<defaultProxy useDefaultCredentials="true" enabled="true">
<proxy bypassonlocal="true" proxyaddress="http://127.0.0.1:8080" />
</defaultProxy>
</system.net>
with authentication option
<system.net>
<defaultProxy useDefaultCredentials="true" enabled="true">
<proxy bypassonlocal="true" proxyaddress="http://Username:Password@yourproxyaddress.net:8080" />
</defaultProxy>
</system.net>
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