killchain-compendium/Exploits/Binaries/Extract Opcode.md

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# Extracting Opcode
## Extracting from ELF File
Extracting opcode from an ELF file can be done via the following way
```sh
objdump -d ./payload|grep '[0-9a-f]:'|grep -v 'file'|cut -f2 -d:|cut -f1-6 -d' '|tr -s ' '|tr '\t' ' '|sed 's/ $//g'|sed 's/ /\\x/g'|paste -d '' -s |sed 's/^/"/'|sed 's/$/"/g'
```