SCSC2026 Quals - ngestring - Reverse Engineering Writeup

[!NOTE] CTF CHALLENGE OVERVIEW

CTF Event: SCSC 2026

Category: Writeup

Difficulty: [MEDIUM]

Tools Used: Python 3, Linux CLI

Author / Writeup: LIGHT

Category: Reverse Engineering

Flag: SCS26{b4s1c_st4t1c_4n4lys1s_w1th_str1ngs}

Challenge Description#

Given a 64-bit ELF executable named ngestring.

Analysis#

The challenge name “ngestring” is a hint - it’s Indonesian slang suggesting we should use the strings command.

1
$ file ngestring
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ngestring: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV),
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dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2,
4
BuildID[sha1]=..., for GNU/Linux 3.2.0, not stripped

Solution#

Simply run the strings command to extract printable strings from the binary:

1
$ strings ngestring
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SCS26{b4s1c_st4t1c_4n4lys1s_w1th_str1ngs}