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Cyber Community Universitas Gunadarma (CCUG)

Part of CCUG (Cyber Community Universitas Gunadarma)

Security researcher & CTF competitor specialized in Binary Exploitation (Pwn), Reverse Engineering, and firmware decomposition. Exploring low-level system internals, zero-day primitives, and cryptographic protocols.

Explore Writeups (13)Achievements & Honors Security Arsenal Favorites & Misc

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Awards and competition highlights.

Selected milestones from cybersecurity competitions and student technology events.

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2026

KAPOLRI CUP 2026 CTF

3rd Place (Juara 3)

Secured national 3rd Place podium at the law enforcement cyber defense CTF finals, reverse engineering custom POLRI binaries and performing live memory forensics.

Kepolisian Negara Republik Indonesia (POLRI)

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2025

TechnoFair 12.0 - CTF

1st Place Champion (Juara 1)

Overall 1st Place Champion in national collegiate cybersecurity championship with team @ION, dominating binary exploitation and reversing tracks.

Universitas Gunadarma

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2026

Hackfest0x09 - CTF

1st Place Champion (Juara 1)

1st Place Winner solving low-level x86_64 anti-debugging binaries, heap exploitation primitives, and cryptographic substitution systems.

Universitas Gunadarma

/recent-writeups

view all writeups (13)

Custom Encoding: Cipher Stream Analysis

Writeup resmi challenge GEMASTIK XIX: Analisis custom binary substitution token O/H, konversi bitwise position power, dan decoding hex string 86 karakter.

GEMASTIK XIX 2026-08-23

GEMASTIK XIX: Hexlock Reverse Engineering

Writeup lengkap biner hexlock: Rekonstruksi key 6-shard, bypass proteksi anti-debug, pembuktian parameter AES-128-GCM, dan ekstraksi flag 50-byte.

GEMASTIK XIX 2026-08-23

GEMASTIK XIX: MatematikaMenyenangkanBukan

Writeup lengkap Tauri/Rust binary: Deobfuskasi JavaScript, analisis 4 branch command Rust, Fisher-Yates inverse permutation, dan solver 1.000.000 round SHA-256.

GEMASTIK XIX 2026-08-23

GEMASTIK XIX: Nimbus Manual Recon & SIMD Analysis

Writeup lengkap analisis manual biner Nimbus: Bedah menyeluruh alur stack, validasi panjang 1-2048, dan komputasi SIMD loop 128-bit checksum.

GEMASTIK XIX 2026-08-23

/arsenal & stack

(12 tools)

IDA Pro 8.x / 9.x

Daily Driver

Industry-standard interactive disassembler and decompiler with Hex-Rays.

use case:Deep binary analysis, graph view navigation, struct recovery, and IDA Python scripting.

Ghidra (NSA)

Primary

Open-source software reverse engineering suite with multi-arch decompilation.

use case:Custom processor extensions, head-to-head cross verification, and automated batch analysis.

Binary Ninja

Favorite

Modern RE platform with High Level IL (HLIL) and Medium Level IL (MLIL).

use case:Control flow graph deobfuscation and automated static analysis workflows.

GDB + Pwndbg / GEF

Daily Driver

Enhanced GNU Debugger plugin tailored for binary exploit development.

use case:Heap state visualizer, stack inspection, ROP chain validation, and crash analysis.

Pwntools (Python 3)

Daily Driver

CTF framework and exploit development library for rapid solver creation.

use case:Socket networking, dynamic ELF packing, format string automations, and ROP construction.

Ropper / ROPgadget

Primary

High performance gadget finder and ROP chain generator.

use case:Finding useful x86/x64/ARM gadgets, register pivots, syscall primitives, and stack alignment.

Frida Dynamic Instrumentation

Secondary

Dynamic code instrumentation toolkit for developers, reverse engineers, and researchers.

use case:Runtime function hooking, SSL pinning bypass, crypto key extraction, and memory tracing.

SageMath (Sage)

Favorite

Comprehensive open-source mathematics system for advanced computational cryptography.

use case:Lattice reduction (LLL/BKZ), Coppersmith small roots attack, and elliptic curve equations.

Z3 Theorem Prover (SMT)

Primary

State-of-the-art Satisfiability Modulo Theories solver from Microsoft Research.

use case:Symbolic execution, constraint solving, keygen recovery, and custom hash collision solving.

Binwalk & FMK

Primary

Firmware extraction, signature carving, and ROM file system reconstruction.

use case:Extracting squashed file systems, kernel headers, and bootloader ROM structures.

QEMU System & User Emulation

Secondary

Generic and open-source machine emulator and virtualizer.

use case:Cross-architecture binary execution (MIPS/ARM/AArch64) with remote GDB debugging.

Arch Linux / WSL2 + Zsh

Daily Driver

Customized low-latency offensive security workstation.

use case:Daily competitive environment with kernel headers, custom glibc versions, and toolchains.

Interactive CTF Flag Vault

x86_64 Sandbox

Enter CTF flag or secret password to unlock the vault memory.

/curated-favorites

view /misc page

/curated-favorites(Top 3s)

💡 Click on any card below to flip & read the honest take.

#1 moviesflip

The Odyssey

Epic Mythological Cinema

"Masterclass in strategy & long-haul perseverance."

#2 moviesflip

The Godfather

Francis Ford Coppola

"Classic cinema with unmatched atmosphere & strategy."

#3 moviesflip

Spider-Man

Sam Raimi / Marvel

"With great power comes great responsibility."

#1 musicflip

E85

Don Toliver

"Pure late-night nitrous oxide energy."

#2 musicflip

Die Trying

PARTYNEXTDOOR

"Late-night ambient synth perfection."

#3 musicflip

I Miss You Every Brand New Day

For Revenge

"Cuz I want to see you every brand new day."

#1 booksflip

Homer's Odyssey

Homer

"Outsmarting brute force with sheer intellect."

#2 booksflip

Neuromancer

William Gibson

"The genesis of cyberspace and cyberdeck culture."

#3 booksflip

Laskar Pelangi

Andrea Hirata

"Mimpi adalah kunci untuk kita menaklukkan dunia."