115 lines
6.3 KiB
HTML
115 lines
6.3 KiB
HTML
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<title>Shellcode Compiler Runtime</title>
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<div>»<a href="index.html">Home</a></div>
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<div>»<a href="examples.html">Examples</a></div>
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<div>»<a href="scc.html">Invocation</a></div>
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<div>»<a href="runtime.html">Runtime Library</a></div>
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<div>»<a href="python.html">Python Bindings</a></div>
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<div>»<a href="issues.html">Known Issues</a></div>
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</div>
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</div>
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<div id="layout-content-box">
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<div id="layout-banner">
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<div id="layout-title">Shellcode Compiler</div>
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<div id="layout-description">A custom shellcode compiler for Binary Ninja</div>
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</div>
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<div id="layout-content">
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<div id="header">
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<h1>Command line invocation</h1>
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</div>
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<div id="content">
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<div id="preamble">
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<div class="sectionbody">
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<div class="paragraph"><p>The Shellcode Compiler can be run from the command line. The following describes the command line sytax:</p></div>
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<div class="listingblock">
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<div class="content monospaced">
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<pre>scc [options] <input files> [...]
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This compiler accepts a subset of C99 syntax, with extensions for creating a standalone
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environment for writing shellcode. Many standard system calls and C library functions
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are automatically available without the need for include files.
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Options:
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--arch <value> Specify processor architecture
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Can be: x86 (default), x64
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--align <boundary> Ensure output is aligned on the given boundary
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--allow-return Allow return from shellcode (default is to exit)
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--anti-disasm Generate anti-disassembly blocks
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--anti-disasm-freq <n> Emit anti-disassembly blocks every <n> instructions
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--base <expr> Set base address of output (can be a runtime computed
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expression, such as "[eax+8]-12")
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--blacklist <byte> Blacklist the given byte value
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--concat Jump to end of output on return for concatenating code
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-D <define>[=<value>] Define a preprocessor macro
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--decoder <source> Use decoder to decode shellcode before executing
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--encode-pointers All code pointers are encoded with a random canary
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--encoder <source> Use encoder to encode shellcode
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--exec Execute shellcode after generation (does not write
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output to a file)
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--exec-stack When outputting an executable, make stack executable
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--format <value>, -f <value> Specify output format
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Can be: bin (default), lib, elf, pe, macho
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--frame-reg <reg> Use alternate register as the frame pointer
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--header <file> Include a precompiled header
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-I <path> Add additional directory for include files
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-L <lib> Include pre-built library
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-m32, -m64 Specify target address size
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--map <file> Generate map file
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--markov-chain <file> Use file for generating random instruction sequences
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--max-length <value> Do not let output size exceed given number of bytes
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--mixed-mode Randomly choose subarchitecture for each function
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-o <filename> Set output filename (default is hex dump to stdout)
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-O0 Do not run the optimizer
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-Os Try to generate the smallest code possible
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--pad Pad output to be exactly the maximum length
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--pie Always generate position independent code
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--platform <value> Specify operating system
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Can be: linux (default), freebsd, mac, windows, none
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--polymorph Generate different code on each run
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--preserve <reg> Preserve the value of the given register
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--unsafe-stack Stack pointer may be near the code
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--return-reg <reg> Use alternate register as the return value
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--return-high-reg <reg> Use alternate register as the upper 32 bits of return
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value (32-bit output only)
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--seed <value> Specify random seed (to reproduce --polymorph runs)
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--shared Generate shared library instead of executable
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--stack-grows-up Stack grows toward larger addresses
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--stack-reg <reg> Use alternate register as the stack pointer
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--stdin Read source code from stdin
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--stdout Send generated code to stdout for pipelines
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Useful extensions:
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__noreturn Specifies that a function cannot return
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Example: void exit(int value) __noreturn;
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__syscall(num, ...) Executes a system call on the target platform
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__undefined Gives undefined results, usually omitting code
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Example: exit(__undefined);
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__initial_<reg> Value of register at start of program
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Example: int socketDescriptor = __initial_ebx;</pre>
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</div></div>
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</div>
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</div>
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</div>
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<div id="footnotes"><hr /></div>
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</div>
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</div>
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</body>
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</html>
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