misc
Check file information
file ./chall
output
./chall: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=662f66798546b59e005b4
Check file memory mitigation
checksec --file=./chall
output
[*] '/home/attacker/ground/chall'
Arch: amd64-64-little
RELRO: Partial RELRO
Stack: No canary found
NX: NX enabled
PIE: No PIE (0x400000)
HexDump
hexdump -C exploit.bin
Useful Tools
Hex to String Converter - https://codebeautify.org/hex-string-converter
String to Hex Converter - https://codebeautify.org/string-hex-converter