Common CTF Challenges

Reference notes, commands, and ready-to-use snippets for Capture the Flag competitions. Keep it locally, search fast, and copy what you need mid-challenge.

Table of Contents

• Categories
• Quick Start
• Usage
• Contributing

Categories

Category	Description	Scripts	Status
crypto/	Ciphers, RSA attacks, encoding schemes	13	Complete
pwn/	Binary exploitation, ROP, format strings	22	Complete
web/	SQLi, XSS, SSTI, SSRF, XXE, CSRF	8	Complete
reverse/	Angr, Z3, GDB scripts, Frida hooks	12	Complete
forensics/	Disk, memory, PCAP analysis	4	Complete
network/	ARP spoofing, MITM, Scapy	1	Complete
mobile/	APK reversing, Frida, SSL pinning bypass	-	Complete
crack/	Hashcat, John, password cracking	-	Complete
cloud/	AWS S3, Firebase exploitation	-	Complete
osint/	Username hunting, EXIF, Google dorking	-	Complete
web3/	Smart contract vulnerabilities	-	Complete
steganography/	Image/audio steg tools	-	Complete
esolangs/	Brainfuck, Malbolge, Whitespace	-	Complete
misc/	QR recovery, DTMF, Git extraction	-	Complete
machine/	Linux privesc, enumeration	-	Complete
jailbreak/	Sandbox escapes, restricted shells	-	Complete

Quick Start

# Clone the repository
git clone https://github.com/ByamB4/Common-CTF-Challenges.git
cd Common-CTF-Challenges

# Search for keywords
grep -r "pickle" .
grep -r "sql" web/

# Or use ripgrep (faster)
rg -n "pickle"
rg -n "sql" web/

Usage

During a CTF

1. Identify the category - Jump into the matching folder
2. Scan for payloads - Check README.md for quick references
3. Search for specific techniques - Use grep or rg
4. Run scripts if needed - Most are standalone Python

Search Examples

# Find RSA attack scripts
rg "wiener" crypto/

# Find format string payloads
rg "fmtstr" pwn/

# Find SQL injection techniques
rg "union" web/sqli/

# Find all Python scripts
find . -name "*.py" -type f

Running Scripts

# Example: RSA attack
python crypto/asymmetric-cipher/src/wiener_attack.py

# Example: Blind SQLi
python web/sqli/src/mysql_blind_get_version.py

# Example: MITM attack (requires root)
sudo python network/mitm.py

Directory Structure

Common-CTF-Challenges/
├── crypto/
│   ├── README.md           # Cipher references
│   ├── asymmetric-cipher/  # RSA attacks
│   │   └── src/            # Python scripts
│   └── img/                # Cipher images
├── pwn/
│   ├── README.md           # Exploitation techniques
│   └── src/
│       ├── x32/            # 32-bit exploits
│       └── x64/            # 64-bit exploits
├── web/
│   ├── README.md           # Web exploitation
│   ├── sqli/               # SQL injection
│   ├── ssrf/               # SSRF attacks
│   └── ...
├── reverse/
│   ├── README.md           # Reversing tools
│   └── src/                # Angr, Z3, GDB scripts
├── forensics/
│   ├── README.md           # Forensics techniques
│   └── src/                # Analysis scripts
├── network/
│   ├── README.md           # Network attacks
│   └── mitm.py             # ARP spoofing script
└── CONTRIBUTING.md         # Contribution guide

Contributing

See CONTRIBUTING.md for guidelines on:

• Adding new scripts and documentation
• Code style and docstring requirements
• Pull request process

Notes

• Use these materials ethically and only in competitions or authorized environments
• Links are provided for convenience; mirror important payloads locally for offline use
• All Python scripts include docstrings explaining usage and dependencies
• Test scripts before relying on them in live competitions