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The shell*.asm files are considered the default programs and the
expected use-case for utilizing the templates is to edit these files to
implement the desired shellcode. I figure that literal shellcode makes
the most sense of what to expect by default.
'make all' will assemble and link the shellcode (so it can actually be
directly executed via the output elf files), and feed the disassembly
into shelltool for use elsewhere.
Signed-off-by: Malfurious <m@lfurio.us>
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For convenience, I've rewritten my old shellcode parser program in
Python. It is moved to the shellcode templates dir and renamed to
shelltool.
As a new feature, shelltool will now check the result for NULL bytes and
newline bytes that may cause problems in an exploit.
Signed-off-by: Malfurious <m@lfurio.us>
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Signed-off-by: Malfurious <m@lfurio.us>
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Signed-off-by: Malfurious <m@lfurio.us>
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Taken from github, see comment in file.
Signed-off-by: Malfurious <m@lfurio.us>
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The foremost tool in this collection is the brainfuck debugger. It was
written to assist with the 'boring flag checker' problem from RaRCTF
2021, but has good potential for general-purpose use.
The compiler and decompiler are much more niche, given brainfuck is not
typically a compiled language. They are from the same CTF and, although
highly problem-specific, are kept around for posterity.
A hello world program is saved under templates as a quick sanity check
for the tools as well as for reference purposes, should it become useful.
Signed-off-by: Malfurious <m@lfurio.us>
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Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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Signed-off-by: Malfurious <m@lfurio.us>
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