15 lines
717 B
Bash
15 lines
717 B
Bash
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pattern="\x55\x41\x56\x53\x48\x83\xEC\x20\x49\x89\xFE\x85\xF6\x0F\x84....\x81\xFE\x13\xFC\xFF\xFF\x0F\x85"
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offset=14
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file="/opt/resolve/bin/resolve"
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# https://stackoverflow.com/a/17168777
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matches=$(LANG=C grep -obUaP $pattern $file)
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matchcount=$(echo "$matches" | wc -l)
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if [[ -z $matches ]]; then echo "pattern not found";
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elif [[ $matchcount -ne 1 ]]; then echo "pattern returned $matchcount matches instead of 1";
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else
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patternOffset=$(echo $matches | cut -d: -f1)
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instructionOffset=$(($patternOffset + $offset))
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echo "patching byte '0x$(hexdump -s $instructionOffset -n 1 -e '/1 "%02x"' $file)' at offset $instructionOffset"
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echo -en "\x85" | dd conv=notrunc of=$file bs=1 seek=$instructionOffset count=1;
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fi
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