Tugas Keamanan Informasi – Attachment dan Penyadapan
April 6, 2011 1 Comment
Pada tugas kali ini kami diminta untuk melihat bagaimana sebuah attachment pada email di proses dan melakukan penyadapan terhadap suatu email.
Untuk soal yang pertama, saya mencoba mengirimkan dua buah attchment ke email saya sendiri, kemudian membuka file raw dari email tersebut, dan hasilnya seperti di bawah ini :
Return-Path: <if18012@students.if.itb.ac.id> X-Original-To: if18012@students.if.itb.ac.id Delivered-To: if18012@students.if.itb.ac.id Received: from mx.if.itb.ac.id (mx.if.itb.ac.id [167.205.32.3]) by mail.students.if.itb.ac.id (Postfix) with ESMTP id 7E3B1ACC27 for <if18012@students.if.itb.ac.id>; Wed, 6 Apr 2011 11:52:14 +0700 (WIT) Received: by mx.if.itb.ac.id (Postfix, from userid 48) id 52D82E02D6; Wed, 6 Apr 2011 12:19:36 +0700 (WIT) Received: from seiya.sister.if.itb.ac.id (seiya.sister.if.itb.ac.id [167.205.35.82]) by webmail.informatika.org (Horde MIME library) with HTTP; Wed, 06 Apr 2011 12:19:36 +0700 Message-ID: <20110406121936.26ck2v2hogc8088g@webmail.informatika.org> Date: Wed, 06 Apr 2011 12:19:36 +0700 From: "Anselmus Krisma Adi K." <if18012@students.if.itb.ac.id> To: if18012@students.if.itb.ac.id Subject: Tugas Attachment MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="=_1xa6jopmnfgk" Content-Transfer-Encoding: 7bit User-Agent: Internet Messaging Program (IMP) H3 (4.0.4) This message is in MIME format. --=_1xa6jopmnfgk Content-Type: text/plain; charset=ISO-8859-1; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit Body email ---------------------------------------------------------------------- "Nothing is impossible if you can make that impossible becomes nothing" Anselmus Krisma Adi Kurniawan Program Studi Teknik Informatika Divisi Seni dan Olahraga Himpunan Mahasiswa Informatika Institut Teknologi Bandung 2008 --=_1xa6jopmnfgk Content-Type: text/plain; charset=ISO-8859-1; name="Test Attachment.txt" Content-Disposition: attachment; filename="Test Attachment.txt" Content-Transfer-Encoding: 7bit IIS kependekan dari Internet Information Services, merupakan salah satu servis yang ada di sistem operasi windows. secara default service ini tidak terinstall langsung pada windows secara umum namun dengan sedikit usaha kita dapat menginstallnya di windows kita. --=_1xa6jopmnfgk Content-Type: image/jpeg; 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Dari file raw yang di atas dapat dilihat bahwa masing-masing attachment diletakkan setelah body email dan diberi tag (pembungkus) untuk memisahkan attachment satu dengan yang lainnya. Email di atas memiliki dua attachment yaitu berupa file gambar dan file teks, untuk file teks tidak dilakukan proses enkripsi jadi isi dari file teks bisa terlihat dengan jelas sedangkan untuk file gambar dilakukan proses encoding.
Untuk tugas yang kedua saya menggunakan tool wireshark untuk melakukan penyadapan email yang keluar (dikirimkan) dari komputer saya. Selain itu saya juga menggunakan email client Thunderbird untuk melakukan proses pengiriman email. Pertama-tama saya harus melakukan pengaturan terhadap wireshark untuk mendengarkan proses SMTP saja kemudian saya mengirimkan email melalui email client. Setelah dikirimkan, paket yang tertangkap di wireshark sebagai berikut
dari gambar diatas terlihat bahwa email yang saya kirim memiliki subject “Tugas KI Untuk Sniffting” dan memiliki body “Ini untuk body email untuk di sniff”

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