{"id":7370,"date":"2017-10-09T08:42:35","date_gmt":"2017-10-09T06:42:35","guid":{"rendered":"https:\/\/hansesecure.de\/2017\/10\/slae-assignment-2-tcp-reverse_shell\/"},"modified":"2017-10-09T08:42:35","modified_gmt":"2017-10-09T06:42:35","slug":"slae-assignment-2-tcp-reverse_shell","status":"publish","type":"post","link":"https:\/\/hansesecure.de\/en\/2017\/10\/slae-assignment-2-tcp-reverse_shell\/","title":{"rendered":"SLAE Assignment #2 | TCP Reverse_Shell"},"content":{"rendered":"

Welcome back to my second post for the SLAE certification.<\/p>\n

Today we are going to build a reverse_shell shellcode and again you can find the files here<\/a>.<\/p>\n

This task is very similar to the first one, so i dont have to look up new\/more information. Lets switch some syscalls and registers!
\nThe code for socket_setup<\/em>, fileDescriptors<\/em> and shellExecution<\/em> are the same as in our bind_shell assignment<\/a>.<\/p>\n

After the socket_setup<\/em> we connect to a specific port and ip, which are also marked in the code with comments:<\/p>\n

\"\"<\/a><\/p>\n

So lets try our new shellcode:
\n#1 nc -lv 11013
\n#2 .\/reverse_shell
\n#3 Boom!<\/p>\n

\"\"<\/a>
\nNow we are able to own systems behind NAT with our selfwritten shellcode, nice!<\/p>\n

 <\/p>\n

This blog post has been created for completing the requirements of the SecurityTube Linux Assembly Expert certification:
\nhttp:\/\/securitytube-training.com\/online-courses\/securitytube-linux-assembly-expert\/<\/a><\/p>\n

Student ID: SLAE-1036<\/p>\n","protected":false},"excerpt":{"rendered":"

Welcome back to my second post for the SLAE certification. Today we are going to build a reverse_shell shellcode and again you can find the files here. This task is very similar to the first one, so i dont have to look up new\/more information. Lets switch some syscalls and registers! The code for socket_setup, […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[257],"tags":[269,270,266,271],"class_list":["post-7370","post","type-post","status-publish","format-standard","hentry","category-deep-dive-techniques","tag-assembler-en","tag-linux-en-2","tag-migration-en","tag-slae-en-2"],"acf":[],"yoast_head":"\nSLAE Assignment #2 | TCP Reverse_Shell – HanseSecure GmbH<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hansesecure.de\/en\/2017\/10\/slae-assignment-2-tcp-reverse_shell\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SLAE Assignment #2 | TCP Reverse_Shell – HanseSecure GmbH\" \/>\n<meta property=\"og:description\" content=\"Welcome back to my second post for the SLAE certification. Today we are going to build a reverse_shell shellcode and again you can find the files here. This task is very similar to the first one, so i dont have to look up new\/more information. Lets switch some syscalls and registers! The code for socket_setup, […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hansesecure.de\/en\/2017\/10\/slae-assignment-2-tcp-reverse_shell\/\" \/>\n<meta property=\"og:site_name\" content=\"HanseSecure GmbH\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/hansesecure\" \/>\n<meta property=\"article:published_time\" content=\"2017-10-09T06:42:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hansesecure.de\/wp-banane\/uploads\/2017\/10\/slae_2_reverseConnect-300x106.jpg\" \/>\n<meta name=\"author\" content=\"HanseSecure\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@CyberWarship\" \/>\n<meta name=\"twitter:site\" content=\"@CyberWarship\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"HanseSecure\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 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