Whitepaper called Linux x86 Reverse Engineering - Shellcode Disassembling and XOR decryption.
cb84ec2a60fee3741cfa17047e6a2165d0cad06edf94ce2d2f2ec149c7414f6dThis is a whitepaper that was written for beginners learning how to write shellcode.
4408a4e26d5d0e08d0400d47fc4b5fbdc7ea9f4db3d206e9f0a533805edf17edAlphanumeric shellcode is similar to ascii shellcode in that it is used to bypass character filters and evade intrusion-detection during buffer overflow exploitation. This article documents alphanumeric code on multiple architectures, but primarily the 64 bit x86 architecture. Alphanumeric shellcode requires a basic understanding of bitwise math, assembly and shellcode.
58bd7026c178df13e32741aeefd385da0fd61df0dd758c8fe3d294c3c7f8be08Whitepaper called Construindo Shellcodes. It discusses how to build shellcodes and use them. Written in Portuguese.
8a69b4c29cd9e658b54a12c337266f622bc5a9644d51ae9a62cf454b59fa26b1This is part two of the Simple x64 XOR Shellcode Encoder / Loader paper that adds in simple obfuscation.
07015c0dcec4eea8611e3ed8e6f9f82d8774813630fd343151116458df7fc37bThis is a simple tutorial that also provides a code example on doing a x64 xor encoder and loader for shellcode. hello_world, shell with setreuid, and portbind shellcode examples are provided.
01dd8d4138095d6e5cd36ad14d49a7c9867d04d3b19cf8010f5b4ffa35e94746Whitepaper called How To Create Your Own Shellcode On Arch Linux.
a86b5a24bc7c7e5373a8800389143e2b87b4ee9bd2bb60c36fcb9ba75c126768Whitepaper called Writing Manual Shellcode by Hand.
061997e84eadf0ea80fa13c73f114ab9cb5632b12b77b660304a855a3f885f72Whitepaper called How To Create a Shellcode on ARM Architecture.
afc96ecde2f45d34049429d3da01bbc11524655aa7184ff5ccbd014a45ed7f61Whitepaper called How to create a polymorphic shellcode.
d1fd355e88fcde0310c5c3e33b05b23f2ada9bbf2558047dd96893d2881e67ebWhitepaper called How to create a shellcode on Linux / x86.
be8ad7a3a06855a46d70be336cf0396e40311d917b41a72c66e17cc4f8048afcIntroduction to Win32 shellcoding. Part 9 in a series of tutorials.
c348962751540735326efe86583d329a1d5165a9eee59075a9f4cc774b7a452eWin32 Egg Hunting. Part 8 in a series of tutorials.
10e73a2c8d92681faa9e39235b47821f5f3bf942e2cfd8556dc2fee20a9ffa8eWhitepaper called Writing JIT-Spray Shellcode For Fun And Profit.
c63788300beae3066d70ac6a350d32e8cc1e68446bc632aafb68473e7976af03Exploit writing tutorial 9 - Introduction to Win32 shellcoding.
3706f35a0ce8ee03fa0b64d0df8875570a1887011f234d325ca5f281b133b56bWhitepaper called Building Your Own Shell-codes.
86ef527d9aa10343480e09786cd1e4d1938ad0c3b246d7d5f2f5973fcf16289dWhitepaper called English Shellcode. In this paper, they challenge the assumption that shellcode must conform to superficial and discernible representations. Specifically, they demonstrate a technique for automatically producing English Shellcode, transforming arbitrary shell-code into a representation that is superficially similar to English prose.
520adbcbc20b5b74ff45288dfb818039f329155c76d5816f3314408df708f644Whitepaper called Spector: Automatically Analyzing Shell Code.
48ece968a47b6a78a543ac11868c445687fd0d92b816b6b54404c203b8529fcdWhitepaper called Creating Shellcode for the Linux x86 32-bit architecture. Written in French.
f7abea32722ccf3a4a3e7cf6faade5775a23fe7071cdde7fe5c3930d10523c4eShellCode For Beginners - A short whitepaper discussing what defines shellcode and simple fundamentals surrounding its use.
1f3f95250b72edf4c8401066283dbc4fcebcc43a81a3faabe29da879973ffebaWhitepaper: Linux Shellcoding Reference.
66b56a2a402353559920e7cc92cbdf62a89aef2b05132f52f60437a01a69c71bThis paper describes an attempt to write Win32 shellcode that is as small as possible, to perform a common task subject to reasonable constraints. The solution presented implements a bindshell in 191 bytes of null-free code, and outlines some general ideas for writing small shellcode.
a4631261a3729136f9d6a5d804e1c7cdf1a8baf9350860bdca03b63296b139a2Whitepaper entitled 'NIDS Polymorphic Evasion - The End?'. This paper explains how even the most modern of NIDS fail to detect polymorphic shellcode.
3c6e4f916e13381251401f462b3e2128ca6d50fa3050aa9efdad122aee3d6e88Writing IA32 Restricted Instruction Set Shellcode Decoder Loops - This article addresses the requirements for writing a shellcode decoder loop using a limited number of characters that limits the instruction set. Most of it is based on the author's experience with alphanumeric decoders but the principles apply to any piece of code that is written to work with a limited instruction set.
2aea2ebf088e500f6e82bebaad1ecbf8639a257cb6f76e1538ffef1687c2a19aIntroduction to Shellcode: How to exploit buffer overflows. A very thorough and well written paper on how it all works. A good read for anyone curious and even those who already think they know it all. It includes step by step examples from vulnerability discovery to a finished exploit. The paper focuses on x86 Intel syntax assembly under Linux.
1929d512b64ef4d90495bb2026a18ce18306161bf9fb0cda06032dfadf958381
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