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CTF Wiki EN
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Introduction
Introduction
Getting Started
CTF History
CTF Competition Types
CTF Competition Topics
Attack and Defense Experience Summary
Learning Resources
Misc
Misc
Miscellaneous Introduction
Information Gathering Method
Encoding Analysis
Encoding Analysis
Encoding Used in Communication
Encoding Used in Computing
Encoding Used in the Real World
Forensic and Steganography Prerequisite
Image Analysis
Image Analysis
Introduction to Image Analysis
PNG
JPG
GIF
Audio Steganography
Audio Steganography
Table of contents
Common Method
MP3 Steganography
Basics
CTF Example
ISCC-2016: Music Never Sleep
Waveform
Basics
CTF Example
ISCC-2017: Misc-04
Spectrum
Basics
CTF Example
Su CTF Quals 2014: hear_with_your_eyes
LSB Audio Steganography
Basics
2015 GDQWB: Little Apple
Related CTFs and Resources
Traffic Packet Analysis
Traffic Packet Analysis
Introduction to Traffic Packet Analysis
PCAP File Repairing
Protocol Analysis
Protocol Analysis
Overview of Protocol Analysis
Wireshark
HTTP
HTTPS
FTP
DNS
WIFI
USB
Data Extraction
Compressed Package Analysis
Compressed Package Analysis
ZIP Format
RAR Format
Disk and Memory Analysis
Disk and Memory Analysis
Introduction
Crypto
Crypto
Introduction to Cryptography
Basic Mathematics
Basic Mathematics
Introduction
Classical Cipher
Classical Cipher
Introduction to Classical Cryptography
Single table Substitution Cipher
Multi-table Substitution Cipher
Other Types of Cipher
Summary
Stream Cipher
Stream Cipher
Introduction
Pseudo Random Number Generator
Pseudo Random Number Generator
Introduction
Cryptographic Security Pseudo-random Number Generator
Challenge Examples
Linear Congruence Generator
Linear Congruence Generator
Introduction
Example
Feedback Shift Register
Feedback Shift Register
Introduction
Linear Feedback Shift Register
Nonlinear Feedback Shift Register
Special Stream Cipher
Special Stream Cipher
RC4
Block Cipher
Block Cipher
Introduction to Block Cipher
ARX
DES
IDEA
AES
Simon and Speck
Group Mode
Group Mode
Introduction
Padding Methods
ECB
CBC
PCBC
CFB
OFB
CTR
Padding Oracle Attack
Asymmetric Cryptography
Asymmetric Cryptography
Introduction to Asymmetric Cryptography
RSA
RSA
RSA Introduction
Modulo-related Attacks
Public Key Index Related Attacks
Private Key d Related Attacks
Coppersmith Related Attacks
Chosen Plain Cipher Attack
Side Channel Attack
Bleichenbacher Attack
Challenge Examples
Knapsack Cipher
Discrete Log Correlation
Discrete Log Correlation
Discrete Logarithm
Elgamal
ECC
Lattice-based Cryptography
Lattice-based Cryptography
Lattice Overview
Introduction to Lattices
Lattice-based Algorithm
CVP
Hash Function
Hash Function
Introduction to the Hash Function
MD5
SHA1
FNV
Hash Attack
Challenge Examples
Digital Signature
Digital Signature
Introduction to Digital Signatures
RSA Digital Signature
ElGamal Digital Signature
DSA Digital Signature
Summary of Attack Techniques
Summary of Attack Techniques
Introduction
Man in the Middle Attack
Bit attack
Certificate Format
Web
Web
Introduction to Web Applications
SQL Injection
XSS Cross-Site Scripting
CSRF Cross-Site Request Forgery
SSRF Server Request Forgery
PHP Code Auditing
Assembly
Assembly
x86_x64
mips
arm
Executable
Executable
ELF file
ELF file
ELF File Basic Structure
Program Loading
Program Link
Program Execution Flow
PE file
PE file
PE File Basic Structure
PE Import Table
PE Export Table
PE Relocation Table
Reverse Engineering
Reverse Engineering
Reverse Overview
Reverse Overview
Software Reverse Engineering Introduction
Common Encryption Algorithms and Code Recognition
Labyrinth Problem
Virtual Machine Command Analysis
Unicorn Engine Introduction
Linux Reverse
Linux Reverse
Linux Reverse Technology
Linux Reverse Technology
LD_PRELOAD
Incorrect Disassembly Fix
Detecting Breakpoints Bypassing
Detecting Debugging Bypassing
Windows Reverse
Windows Reverse
Shelling Technique
Shelling Technique
Introduction to the Protective case
Single Step Tracking Method
ESP Law
One Step to the OEP Method
Memory Mirroring Method
Last Exception Method
SFX Method
DUMP and IAT Reconstruction
Manually Find the IAT and Rebuild It Using ImportREC
DLL File Unpacking
Anti-debugging Technique
Anti-debugging Technique
NtGlobalFlag
Heap Flags
The Heap
Interrupt 3
IsDebuggerPresent
CheckRemoteDebuggerPresent
NtQueryInformationProcess
ZwSetInformationThread
Flower command
Anti-debug Technical Example
Pwn
Pwn
Pwn Overview
Pwn Overview
Readme
Linux Pwn
Linux Pwn
Security Protection Mechanism
Security Protection Mechanism
Canary
Stack Overflow
Stack Overflow
Stack Introduction
Stack Overflow Principle
Basic ROP
Intermediate ROP
Advanced ROP
ROP Tricks
Format String Vulnerability
Format String Vulnerability
Format String Vulnerability Principle
Format String Exploit
Format String Vulnerability Example
Format String Vulnerability Detection
Glibc Heap Related
Glibc Heap Related
Introduction to Heap
Heap Overview
Heap Related Data Structure
In-depth Explanation of Ptmalloc2
In-depth Explanation of Ptmalloc2
Implementation
Basic Functions in the heap implementation
Heap Initialization
Allocate Heap Memory
Free Heap Memory
Tcache
malloc_state
Other
Heap Overflow
Heap-based Off-By-One
Chunk Extend/Overlapping
Unlink
Use After Free
Fastbin Attack
Unsorted Bin Attack
Large Bin Attack
Tcache Attack
House of Einherjar
House of Force
House of Lore
House of Orange
House of Rabbit
House of Roman
IO_FILE Related
IO_FILE Related
FILE Structure Description
Forged Vtable to Hijack Control Flow
FSOP
Use of IO_FILE Under Glibc 2.24
Race Condition
Race Condition
Race Condition Introduction
Example
Integer Overflow
Integer Overflow
Introduction to The Principle of Integer Overflow
Sandbox Escape
Sandbox Escape
Python Sandbox Escape
Linux Kernel
Linux Kernel
Environment Setup
Basics
Kernel-UAF
Kernel-ROP
ret2usr
bypass-smep
Double Fetch
arm-pwn
arm-pwn
Environment Setup
arm-rop
Summary
Summary
Address Leaking
Hijack Control Flow
Get Shell
Windows Pwn
Windows Pwn
Overview
Stack Overflow
Stack Overflow
Stack Introduction
Stack Overflow Basics
shellcode-in-stack
Android
Android
Android Development Basics
Android Application Operating Mechanism Brief
Android Application Operating Mechanism Brief
Basics
The Operating Mechanism of the Java Layer in Android
The Operating Mechanism of the Java Layer in Android
Andriod Native
Smali Introduction
Dex and ODEX
Dex and ODEX
DEX
ODEX
Android Native Layer Introduction
Android Native Layer Introduction
Android Shared Object
Android Reverse Basic Introduction
Android Reverse Basic Introduction
Brief Overview
Android Key Part Location
Android Simple Static Analysis
Android Simple Static Analysis
Android Java Layer Static Analysis
Android Native Layer Static Analysis
Android Static Analysis Hybrid Example
Android Simple Dynamic Analysis
Android Simple Dynamic Analysis
Dynamic Debugging
Android Dynamic Debugging SO
ICS
ICS
ICS_CTF Contest
ICS_CTF Discovery
ICS_CTF Exploit
ICS_CTF Learning Resources
Table of contents
Common Method
MP3 Steganography
Basics
CTF Example
ISCC-2016: Music Never Sleep
Waveform
Basics
CTF Example
ISCC-2017: Misc-04
Spectrum
Basics
CTF Example
Su CTF Quals 2014: hear_with_your_eyes
LSB Audio Steganography
Basics
2015 GDQWB: Little Apple
Related CTFs and Resources
How To See System Specs Windows 11 _hot_ May 2026