This code aims the HLR of the target. It will receive an MSISDN and respons back with its IMSI.
This type of attack is the first step prior to fraud attacks, and the returned IMSI could be used in IMSI spoofing, 
or any other attacks
Hardcoded Values:
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Client PC: 1
Peer PC: 2
Client IP: 192.168.58.2
Client POrt: 2905
Peer IP: 192.168.58.3
Peer Port: 2901
Targer MSISDN: 201522222222
Your GT: [any of your choice]

Execution:
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java -jar SendIMSI.jar
