### Executable and Installation

Source: https://github.com/rickdejager/stegseek/blob/master/src/CMakeLists.txt

Defines the main executable and installation target.

```cmake
add_executable(stegseek main.cc)

install(TARGETS stegseek EXPORT stegseek DESTINATION bin)
```

--------------------------------

### Install build tools on Ubuntu

Source: https://github.com/rickdejager/stegseek/blob/master/BUILD.md

Installs the essential compilation tools required to build the project.

```bash
sudo apt install git build-essential cmake
```

--------------------------------

### Build and install Stegseek

Source: https://github.com/rickdejager/stegseek/blob/master/BUILD.md

Compiles the project using CMake and installs the resulting binary.

```bash
cd stegseek
mkdir -p build
cd build
cmake -DCMAKE_BUILD_TYPE=Release ..
make
sudo make install
```

--------------------------------

### Install project dependencies on Ubuntu

Source: https://github.com/rickdejager/stegseek/blob/master/BUILD.md

Installs the required libraries for Stegseek, including mhash, mcrypt, jpeg, and zlib.

```bash
sudo apt install libmhash-dev libmcrypt-dev libjpeg-dev zlib1g-dev
```

--------------------------------

### Build Stegseek from Source

Source: https://context7.com/rickdejager/stegseek/llms.txt

Compile Stegseek from source on Linux using CMake. This process includes installing dependencies, cloning the repository, building the optimized binary, and installing it system-wide.

```bash
# Install dependencies on Ubuntu/Debian
sudo apt install libmhash-dev libmcrypt-dev libjpeg-dev zlib1g-dev git build-essential cmake
```

```bash
# Clone the repository
git clone https://github.com/RickdeJager/stegseek.git
cd stegseek
```

```bash
# Build with CMake
mkdir -p build && cd build
cmake -DCMAKE_BUILD_TYPE=Release ..
make
```

```bash
# Install system-wide
sudo make install
```

```bash
# Verify installation
stegseek --help
```

```bash
# Or install from .deb package (Ubuntu/Debian)
wget https://github.com/RickdeJager/stegseek/releases/download/v0.6/stegseek_0.6-1.deb
sudo apt install ./stegseek_0.6-1.deb
```

--------------------------------

### Library and Include Configuration

Source: https://github.com/rickdejager/stegseek/blob/master/src/CMakeLists.txt

Creates the library and sets include directories for dependencies.

```cmake
add_library(stegseek_lib ${sources} ${headers})
find_path(MCRYPT_INCLUDE_PATH mcrypt.h)
target_include_directories(stegseek_lib PUBLIC ${MCRYPT_INCLUDE_PATH})
```

--------------------------------

### Define Build Definitions

Source: https://github.com/rickdejager/stegseek/blob/master/src/CMakeLists.txt

Sets preprocessor definitions for system headers and versioning.

```cmake
add_definitions(-DHAVE_DEV_URANDOM)
add_definitions(-DHAVE_DEV_RANDOM)
add_definitions(-DHAVE_TERMIOS_H)
add_definitions(-DSTEGSEEK_VERSION="0.6")
add_definitions(-DSTEGHIDE_VERSION="0.5.1")
```

--------------------------------

### Stegseek Help Command

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

Display the full list of available arguments and commands for Stegseek. Use '-v' for more detailed information, including steghide's help.

```bash
stegseek --help
```

```bash
stegseek --help -v
```

--------------------------------

### Define Source Files

Source: https://github.com/rickdejager/stegseek/blob/master/src/CMakeLists.txt

Lists the source files required for the project build.

```cmake
set (sources
	"Arg.cc"
	"Arguments.cc" 
	"AssertionFailed.cc" 
	"AuFile.cc"
	"AuSampleValues.cc"
	"BFSAPHeuristic.cc"
	"BinaryIO.cc"
	"BitString.cc"
	"BmpFile.cc"
	"BmpPaletteSampleValue.cc"
	"BmpRGBSampleValue.cc"
	"BmpSampleValue.cc"
	"Cracker.cc"
	"CvrStgFile.cc"
	"DFSAPHeuristic.cc"
	"DMDConstructionHeuristic.cc"
	"Edge.cc"
	"EdgeIterator.cc"
	"EmbData.cc"
	"Embedder.cc"
	"EncryptionAlgorithm.cc"
	"EncryptionMode.cc"
	"error.cc"
	"Extractor.cc"
	"Graph.cc"
	"JpegFile.cc"
	"JpegSampleValue.cc"
	"MatchingAlgorithm.cc"
	"Matching.cc"
	"MCryptPP.cc"
	"MHashKeyGen.cc"
	"MHashPP.cc"
	"msg.cc"
	"PasswordCracker.cc"
	"ProgressOutput.cc"
	"PseudoRandomSource.cc"
	"RandomSource.cc"
	"RGBTriple.cc"
	"SampleValueAdjacencyList.cc"
	"SampleValue.cc"
	"SeedCracker.cc"
	"Selector.cc"
	"Session.cc"
	"SMDConstructionHeuristic.cc"
	"SteghideError.cc"
	"Terminal.cc"
	"Utils.cc"
	"Vertex.cc"
	"WavChunk.cc"
	"WavChunkHeader.cc"
	"WavChunkUnused.cc"
	"WavFile.cc"
	"WavFormatChunk.cc"
	"WavPCMSampleValue.cc"
	"WKSConstructionHeuristic.cc"
)
```

--------------------------------

### Accessibility and Output Options

Source: https://context7.com/rickdejager/stegseek/llms.txt

Configure Stegseek for screen readers and customize output for logging or scripting. Options include accessible mode, disabling colored output, and redirecting all output.

```bash
# Enable screen reader friendly output
stegseek secret.jpg rockyou.txt --accessible
```

```bash
# Disable colored output (for logging/piping)
stegseek secret.jpg rockyou.txt --nocolor
```

```bash
# Combine quiet mode with exit codes for scripting
stegseek secret.jpg rockyou.txt -q && echo "Password found" || echo "No password found"
```

```bash
# Redirect all output to file
stegseek secret.jpg rockyou.txt > crack_results.txt 2>&1
```

--------------------------------

### Run Stegseek using Docker

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

Execute Stegseek within a Docker container. Mount the current working directory to access stego files and wordlists.

```bash
docker run --rm -it -v "$(pwd):/steg" rickdejager/stegseek [stegofile.jpg] [wordlist.txt]
```

--------------------------------

### Link Dependencies

Source: https://github.com/rickdejager/stegseek/blob/master/src/CMakeLists.txt

Locates and links required system libraries to the executable.

```cmake
find_library(MCRYPT_LIBRARY mcrypt)
find_library(MHASH_LIBRARY mhash)
find_library(JPEG_LIBRARY jpeg)
target_link_libraries(stegseek PRIVATE stegseek_lib PUBLIC -lpthread -lz ${MCRYPT_LIBRARY} ${MHASH_LIBRARY} ${JPEG_LIBRARY})
```

--------------------------------

### Stegseek Help Output

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

The detailed help output for Stegseek, listing commands, positional arguments, and keyword arguments with their descriptions.

```text
=== StegSeek Help ===
To crack a stegofile:
stegseek [stegofile.jpg] [wordlist.txt]

Commands:
 --crack                 Crack a stego file using a wordlist. This is the default mode.
 --seed                  Crack a stego file by attempting all embedding patterns.
                         This mode can be used to detect a file encoded by steghide.
                         In case the file was encoded without encryption, this mode will
                         even recover the embedded file.
Positional arguments:
 --crack [stegofile.jpg] [wordlist.txt] [output.txt]
 --seed  [stegofile.jpg] [output.txt]

Keyword arguments:
 -sf, --stegofile        select stego file
 -wl, --wordlist         select the wordlist file
 -xf, --extractfile      select file name for extracted data
 -t, --threads           set the number of threads. Defaults to the number of cores.
 -f, --force             overwrite existing files
 -v, --verbose           display detailed information
 -q, --quiet             hide performance metrics (can improve performance)
 -s, --skipdefault       don't add guesses to the wordlist (empty password, filename, ...)
 -n, --nocolor           disable colors in output
 -c, --continue          continue cracking after a result has been found.
                         (A stego file might contain multiple embedded files)
 -a, --accessible        simplify the output to be more screen reader friendly

Use "stegseek --help -v" to include steghide's help.
```

--------------------------------

### Specify Custom Output File

Source: https://context7.com/rickdejager/stegseek/llms.txt

Cracks steghide-encrypted files and saves the extracted data to a specified output file.

```bash
stegseek secret.jpg rockyou.txt -xf extracted_data.txt
```

--------------------------------

### Clone the Stegseek repository

Source: https://github.com/rickdejager/stegseek/blob/master/BUILD.md

Downloads the source code from the official GitHub repository.

```bash
git clone https://github.com/RickdeJager/stegseek.git
```

--------------------------------

### Include Headers

Source: https://github.com/rickdejager/stegseek/blob/master/src/CMakeLists.txt

Globally includes all header files in the current directory.

```cmake
file(GLOB headers
    "*.h"
)
```

--------------------------------

### Continue Cracking After First Result

Source: https://context7.com/rickdejager/stegseek/llms.txt

Continues the cracking process even after finding the first successful passphrase, useful for files with multiple hidden files.

```bash
stegseek secret.jpg rockyou.txt --continue
```

--------------------------------

### Release Build Flags

Source: https://github.com/rickdejager/stegseek/blob/master/src/CMakeLists.txt

Sets optimization and stripping flags for release builds.

```cmake
set(CMAKE_CXX_FLAGS_RELEASE "-O2")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")
```

--------------------------------

### Seed Cracking with Custom Output

Source: https://context7.com/rickdejager/stegseek/llms.txt

Performs seed cracking and saves any extracted data to a specified output file.

```bash
stegseek --seed challenge.jpg -xf recovered.txt
```

--------------------------------

### Analyze Stego File Information

Source: https://context7.com/rickdejager/stegseek/llms.txt

Use the info command to analyze a stego file, determining if it contains hidden data and showing capacity information. This command also validates the file format.

```bash
# Get file information and capacity
stegseek --info cover.jpg
```

```bash
# Check multiple files for steghide content (scripting)
for file in *.jpg; do
  echo "Checking $file..."
  if stegseek --seed "$file" -q 2>/dev/null; then
    echo "  -> Contains steghide data!"
  else
    echo "  -> No steghide data found"
  fi
done
```

```bash
# Quick detection with exit code checking
stegseek --seed suspicious.jpg -q
if [ $? -eq 0 ]; then
  echo "Steghide content detected"
fi
```

--------------------------------

### Continue Seed Cracking

Source: https://context7.com/rickdejager/stegseek/llms.txt

Continues seed cracking to find multiple embedded files within the same cover file.

```bash
stegseek --seed challenge.jpg --continue
```

--------------------------------

### Wordlist Cracking with Explicit Flags

Source: https://context7.com/rickdejager/stegseek/llms.txt

Performs wordlist cracking using explicit command-line flags for clarity.

```bash
stegseek --crack -sf secret.jpg -wl rockyou.txt -xf output.txt
```

--------------------------------

### Embed Data with Stegseek

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

Use this command to embed data into a cover image. Optionally specify an output stegofile name.

```bash
stegseek --embed <data> <coverfile> [<stegofile>]
```

--------------------------------

### Stegseek Cracking Command

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

Use this command to crack a steghide file using a provided wordlist. This is the default mode for Stegseek.

```bash
stegseek [stegofile.jpg] [wordlist.txt]
```

--------------------------------

### Embed Data with Explicit Arguments

Source: https://context7.com/rickdejager/stegseek/llms.txt

Embeds data into a cover image using explicit command-line arguments for input and output files, and password.

```bash
stegseek --embed -ef secret.txt -cf cover.jpg -sf stego.jpg -p "password123"
```

--------------------------------

### Embed Data from Standard Input

Source: https://context7.com/rickdejager/stegseek/llms.txt

Embeds data into a cover image by reading the secret data from standard input.

```bash
cat secret.txt | stegseek --embed -cf cover.jpg -sf output.jpg -p "password"
```

--------------------------------

### Multi-threaded Wordlist Cracking

Source: https://context7.com/rickdejager/stegseek/llms.txt

Accelerates wordlist cracking by utilizing multiple threads for password attempts.

```bash
stegseek secret.jpg rockyou.txt -t 16
```

--------------------------------

### Basic Wordlist Cracking

Source: https://context7.com/rickdejager/stegseek/llms.txt

Cracks steghide-encrypted files using a wordlist. Extracted data is saved to a file named '[filename].out'.

```bash
stegseek secret.jpg /usr/share/wordlists/rockyou.txt
```

--------------------------------

### Embed Data With Compression Disabled

Source: https://context7.com/rickdejager/stegseek/llms.txt

Embeds data into a cover image with compression disabled, potentially speeding up the embedding process.

```bash
stegseek --embed secret.txt cover.jpg output.jpg -p "password" -Z
```

--------------------------------

### Stegseek Detection and Passwordless Extraction

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

This command is used to detect steghide content and extract unencrypted data without a password. It attempts to bruteforce the limited number of seeds used by steghide's random number generator.

```bash
stegseek --seed [stegofile.jpg]
```

--------------------------------

### Verbose Mode Cracking

Source: https://context7.com/rickdejager/stegseek/llms.txt

Enables verbose output to display detailed processing information during cracking.

```bash
stegseek secret.jpg rockyou.txt -v
```

--------------------------------

### Docker Usage for Stegseek Operations

Source: https://context7.com/rickdejager/stegseek/llms.txt

Utilize official Stegseek Docker images for various operations like wordlist cracking, seed cracking, data extraction, and embedding. The current directory is mounted to /steg for file access.

```bash
# Pull the official Docker image
docker pull rickdejager/stegseek
```

```bash
# Basic wordlist cracking via Docker
docker run --rm -it -v "$(pwd):/steg" rickdejager/stegseek secret.jpg rockyou.txt
```

```bash
# Seed cracking mode via Docker
docker run --rm -it -v "$(pwd):/steg" rickdejager/stegseek --seed challenge.jpg
```

```bash
# Extract with known password via Docker
docker run --rm -it -v "$(pwd):/steg" rickdejager/stegseek --extract stego.jpg -p "password"
```

```bash
# Embed data via Docker
docker run --rm -it -v "$(pwd):/steg" rickdejager/stegseek --embed secret.txt cover.jpg output.jpg -p "password"
```

```bash
# Show help via Docker
docker run --rm rickdejager/stegseek --help
```

```bash
# Build custom Docker image from source
docker build -t stegseek-custom .
docker run --rm -it -v "$(pwd):/steg" stegseek-custom secret.jpg wordlist.txt
```

--------------------------------

### Embed Data with Password Protection

Source: https://context7.com/rickdejager/stegseek/llms.txt

Embeds data into a cover image with password protection using AES-256 encryption.

```bash
stegseek --embed secret.txt cover.jpg stego_output.jpg -p "mypassword"
```

--------------------------------

### Seed Cracking for Steghide Detection

Source: https://context7.com/rickdejager/stegseek/llms.txt

Detects steghide content using seed cracking and attempts passwordless extraction if data is unencrypted.

```bash
stegseek --seed challenge.jpg
```

--------------------------------

### Force Overwrite Output Files

Source: https://context7.com/rickdejager/stegseek/llms.txt

Forces Stegseek to overwrite existing output files without prompting for confirmation.

```bash
stegseek secret.jpg rockyou.txt -f
```

--------------------------------

### Quiet Mode Cracking

Source: https://context7.com/rickdejager/stegseek/llms.txt

Runs Stegseek in quiet mode, suppressing progress metrics for use in scripts.

```bash
stegseek secret.jpg rockyou.txt -q
```

--------------------------------

### Embed Data with AES-256 Encryption

Source: https://context7.com/rickdejager/stegseek/llms.txt

Embeds data into a cover image using AES-256 encryption, overriding the default rijndael-128.

```bash
stegseek --embed secret.txt cover.jpg output.jpg -p "password" -e rijndael-256
```

--------------------------------

### Stegseek Extraction Performance

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

This output shows a successful extraction of hidden data using Stegseek, highlighting the time taken for the operation.

```bash
> StegSeek 0.6 - https://github.com/RickdeJager/StegSeek

[i] Found passphrase: "       1"          
[i] Original filename: "secret.txt".
[i] Extracting to "7spaces1.jpg.out".


real	0m1,211s
user	0m9,488s
sys	0m0,084s
```

--------------------------------

### Configure C++ Compiler Flags with CMake

Source: https://github.com/rickdejager/stegseek/blob/master/CMakeLists.txt

Sets compiler flags for GNU and AppleClang compilers. For GNU, it enables Wall and Wno-long-long warnings. For AppleClang, it enforces C++17 standard.

```cmake
cmake_minimum_required(VERSION 3.5)

project(stegseek VERSION 0.6)

if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
  # Update if necessary
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-long-long")
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
  # enforce modern C++, will not compile otherwise
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++17")
endif()

add_subdirectory("src")

# Testing only available if this is the main app
if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
  enable_testing()
  add_subdirectory(tests/steghide)
endif()
```

--------------------------------

### Quiet Mode Seed Cracking

Source: https://context7.com/rickdejager/stegseek/llms.txt

Executes seed cracking in quiet mode, suitable for scripting and automation.

```bash
stegseek --seed challenge.jpg -q
```

--------------------------------

### Skip Default Guesses

Source: https://context7.com/rickdejager/stegseek/llms.txt

Skips Stegseek's default password guesses, such as an empty password or filename variations.

```bash
stegseek secret.jpg rockyou.txt --skipdefault
```

--------------------------------

### Embed Data Without Original Filename

Source: https://context7.com/rickdejager/stegseek/llms.txt

Embeds data into a cover image without storing the original filename, which can save space.

```bash
stegseek --embed secret.txt cover.jpg output.jpg -p "password" -N
```

--------------------------------

### Extract Data with Stegseek

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

Use this command to extract hidden data from a stegofile. Optionally specify an output file name for the extracted data.

```bash
stegseek --extract <stegofile> [<output>]
```

--------------------------------

### Embed Data Without Encryption

Source: https://context7.com/rickdejager/stegseek/llms.txt

Embeds data into a cover image without any encryption. This data is vulnerable to seed cracking.

```bash
stegseek --embed secret.txt cover.jpg output.jpg -p "password" -e none
```

--------------------------------

### Force Overwrite Stego File

Source: https://context7.com/rickdejager/stegseek/llms.txt

Forces Stegseek to overwrite an existing stego file during the embedding process without prompting.

```bash
stegseek --embed secret.txt cover.jpg output.jpg -p "password" -f
```

--------------------------------

### Extract Hidden Data with Known Password

Source: https://context7.com/rickdejager/stegseek/llms.txt

Use the extract command with a known password to retrieve hidden data. Options include specifying an output file, piping to stdout, verbose output, and forcing overwrite.

```bash
# Extract hidden data using known password
stegseek --extract stego.jpg -p "mypassword"
```

```bash
# Extract to specific output file
stegseek --extract stego.jpg -xf recovered_secret.txt -p "password123"
```

```bash
# Extract to stdout (for piping)
stegseek --extract stego.jpg -xf "" -p "password" | base64
```

```bash
# Verbose extraction showing all steps
stegseek --extract stego.jpg -p "password" -v
```

```bash
# Force overwrite existing output file
stegseek --extract stego.jpg -p "password" -f -xf output.txt
```

--------------------------------

### Stegseek Embed Command

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

Stegseek can embed data using a command format similar to the original steghide. This command embeds data into a file.

```bash
stegseek --embed [...]
```

--------------------------------

### Stegseek Extract Command

Source: https://github.com/rickdejager/stegseek/blob/master/README.md

Stegseek can extract data using a command format similar to the original steghide. This command extracts data from a file.

```bash
stegseek --extract [...]
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.