| .. | ||
| README.md | ||
TriCascade i-Bright7x
device
| name | value |
|---|---|
| model | i-Bright7x |
| firmware | unknown currently |
| features | WiFi capable remote controled power supply. that runs linux |
digging
nmap
from nmap -PN -sV -p 1-65535 192.168.17.1, get:
PORT STATE SERVICE VERSION
23/tcp open telnet BusyBox telnetd
53/tcp open domain dnsmasq 2.59rc1
80/tcp open http
8080/tcp open http GoAhead WebServer
the same service looks to be running on both 80 and 8080, prompting for a username and password, but none are provided by the manufacturer.
it appears that the only way to configure this device is to use the Java applet through bright.tricascade.com
jnlp
by watching traffic, see that the applet is served from resources/applet/WifiDevice.jnlp
finding the corresponding .jar was more of a pain than expected, basically:
$ find ~/Library/Application Support/Oracle/Java/Deployment/cache/6.0 -type f -exec file {} \;
./10/78085f0a-4eab1a82: XML 1.0 document text, ASCII text, with CRLF, LF line terminators
./10/78085f0a-4eab1a82.idx: data
./10/78085f0a-c5a84a41ecc99150f548eb0393049f0d8c67849abe845af78c894a676aa18086-6.0.lap: ASCII text
./39/3dc5b4e7-2469db01-1.4.2-: Java archive data (JAR)
./39/3dc5b4e7-2469db01-1.4.2-.idx: data
./45/4766c42d-176a5aa0: XML 1.0 document text, ASCII text, with CRLF, LF line terminators
./45/4766c42d-176a5aa0.idx: data
./45/4766c42d-8bd095d4847349acdbba85a1e70f0d08d3990cfbb19c6007fde8f07bf0b52dbd-6.0.lap: ASCII text
./63/4600b2ff-0e27775cc2e9212bf6c7096ed895db16ef7cdd6b6f1d4e615eec8c92787d0f53-6.0.lap: ASCII text
./63/4d02c2bf-562ad327: Java archive data (JAR)
./63/4d02c2bf-562ad327.idx: data
...
$ 7z l 39/3dc5b4e7-2469db01-1.4.2-
Listing archive: ./39/3dc5b4e7-2469db01-1.4.2-
--
Path = ./39/3dc5b4e7-2469db01-1.4.2-
Type = zip
Physical Size = 77973
Date Time Attr Size Compressed Name
------------------- ----- ------------ ------------ ------------------------
2015-06-12 19:10:02 ..... 8149 3263 META-INF/MANIFEST.MF
2015-06-12 19:10:04 ..... 7954 3196 META-INF/BRIGHTEN.SF
2015-06-12 19:10:04 ..... 6165 4081 META-INF/BRIGHTEN.RSA
2015-06-12 19:10:02 ..... 2232 884 com/insnergy/wifi/applet/b.class
lucky guess.
unzipping gives a bit of a clue about the structure - but nothing really interesting.
decompiling with the help of cfr, however, does give us some hints:
// from com/insnergy/wifi/value/DeviceAP.java
public final String getSsid(String string) {
return this.ssidPattern + DeviceAP.extractMac(string);
}
public static String extractMac(String string) {
return string.substring(8, 20);
}
public final String getPassword(String string) {
return a.a(DeviceAP.extractMac(string)).substring(0, 10).toLowerCase();
}
it looks like the password is derived from the MAC address of the device - which is worse than it sounds, because the WiFi network it exposes for configuration is 'B7' + $MAC_ADDRESS
// from com/insnergy/wifi/applet/e.java
public final void run() {
try {
if (b.a((CharSequence)this.a.a) || !RegexPattern.DEVICE_ID.isValid(this.a.a)) {
throw new ApiException("Not a valid device ID : " + this.a.a);
}
DeviceAP deviceAP = DeviceAP.of(this.a.a);
WiFiDeviceAPI.a(this.a.b, deviceAP.getSsid(this.a.a), deviceAP.getPassword(this.a.a));
Thread.sleep(1000);
WiFiDeviceAPI.b(this.a.b, WiFiDeviceAPI.d(this.a.b).trigger(), "");
return;
}
...
in a roundabout way, we're right: the MAC address is being pulled out of the device ID, which is 'TC060000' + $MAC_ADDRESS, hence the substring
additionally, it looks like the signature for a is ($IP, $SSID, $PASSWORD)
// from com/insnergy/wifi/device/api/c.java
public final Connect a(String object, String string, String string2, String string3) {
String string4 = "Connect?ssid={0}&secmode={1}&encrypt={2}";
MessageFormat messageFormat = new MessageFormat(string4);
if (b.b((CharSequence)string3)) {
messageFormat = new MessageFormat(string4 + "&conpass={3}");
}
object = this.a(messageFormat, new String[]{object, string, string2, string3});
return (Connect)this.a((JSONObject)object, new Connect());
}
//
protected a(String string, String string2) {
String string3 = "http://192.168.17.1:8080/goform/";
int n = 30000;
if (com.insnergy.wifi.b.b.b((CharSequence)string)) {
string3 = string;
}
if (com.insnergy.wifi.b.b.c(string2)) {
n = Integer.parseInt(string2);
}
this.b = string3;
this.c = n;
}
this is the only reference to this address, have not dug to deeply
password: 97451790c9
| key | value |
|---|---|
| MAC | 8C:C7:AA:02:97:48 |
| SSID | B78CC7AA029748 // so.. 'B7' + $MAC |
| ID | TC0600008CC7AA029748 // so 'TC060000' + $MAC |
8CC7AA029748 in decimal is 154789178677064