Repository: objective-see/ProcInfo
Branch: master
Commit: ec51090fcf74
Files: 16
Total size: 122.3 KB
Directory structure:
gitextract_1b4co5mo/
├── .gitattributes
├── .gitignore
├── LICENSE.md
├── README.md
├── lib/
│ ├── libprocInfo.a
│ └── procInfo.h
├── procInfo/
│ ├── Binary.m
│ ├── Consts.h
│ ├── Process.m
│ ├── ProcessMonitor.m
│ ├── Signing.h
│ ├── Signing.m
│ ├── Utilities.h
│ └── Utilities.m
└── procInfo.xcodeproj/
├── project.pbxproj
└── project.xcworkspace/
└── xcshareddata/
└── IDEWorkspaceChecks.plist
================================================
FILE CONTENTS
================================================
================================================
FILE: .gitattributes
================================================
# Auto detect text files and perform LF normalization
* text=auto
================================================
FILE: .gitignore
================================================
# Xcode
#
# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
## Build generated
build/
DerivedData/
## Various settings
*.pbxuser
!default.pbxuser
*.mode1v3
!default.mode1v3
*.mode2v3
!default.mode2v3
*.perspectivev3
!default.perspectivev3
xcuserdata/
## Other
*.moved-aside
*.xcuserstate
## Obj-C/Swift specific
*.hmap
*.ipa
*.dSYM.zip
*.dSYM
# CocoaPods
#
# We recommend against adding the Pods directory to your .gitignore. However
# you should judge for yourself, the pros and cons are mentioned at:
# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
#
# Pods/
# Carthage
#
# Add this line if you want to avoid checking in source code from Carthage dependencies.
# Carthage/Checkouts
Carthage/Build
# fastlane
#
# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
# screenshots whenever they are needed.
# For more information about the recommended setup visit:
# https://github.com/fastlane/fastlane/blob/master/fastlane/docs/Gitignore.md
fastlane/report.xml
fastlane/Preview.html
fastlane/screenshots
fastlane/test_output
# Code Injection
#
# After new code Injection tools there's a generated folder /iOSInjectionProject
# https://github.com/johnno1962/injectionforxcode
iOSInjectionProject/
procInfo.xcodeproj/project.xcworkspace/contents.xcworkspacedata
.DS_Store
================================================
FILE: LICENSE.md
================================================
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reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.
================================================
FILE: README.md
================================================
# ProcInfo
Proc Info is a open-source, user-mode, library for macOS. It provides simple interface to retrieve detailed information about running processes, plus allows one to asynchronously monitor process creation & exit events.
Love this library or want to support it? Check out my [patreon page](https://www.patreon.com/objective_see) :)
##### Quick Start (tl;dr)
To use the Proc Info library:
1. add the Proc Info library (`lib/libprocInfo.a`) and Apple's OpenBSM library (`libbsm.tbd`) to your Xcode Project
2. import the Proc Info library header file (`procInfo.h`)
3. instantiate a `Proc Info` object
4. a) to retrieve information about a running process invoke the `init:` method<br>
b) to enumerate existing processes invoke the `currentProcesses` method<br>
c) to monitor process events, declare a callback block and invoke the `start:` method<br>
...or just download the [demo project](https://github.com/objective-see/ProcInfoExample), to take it for a spin!
```Objective-C
#import "procInfo.h"
//init proc info object
// YES: skip (CPU-intensive) generation of code-signing info
// NO: automatically generate code-signing info for each process
ProcInfo* procInfo = [[ProcInfo alloc] init:NO];
//dump process info for process 1337
NSLog(@"process: %@", [[Process alloc] init:1337]);
//dump process info for all processes
for(Process* process in [procInfo currentProcesses])
NSLog(@"new process: %@", process);
//block for process events
ProcessCallbackBlock block = ^(Process* process)
{
if(process.type != EVENT_EXIT)
NSLog(@"process start: %@\n", process);
else
NSLog(@"process exit: %d\n", process.pid);
};
//start monitoring
// ->block will be invoke upon process events!
[procInfo start:block];
```
##### Details
The Proc Info library provides an interface to:
+ retrieve information about arbitrary processes (by pid)
+ retrieve information about all running processes
+ monitor for process start & exit events
The library is already used in various Objective-See's tools that:
+ need to track process creation events (e.g. RansomWhere? BlockBlock, etc)
+ classify running processes (based on their cryptographic signatures)
Moreover, it is an important component of tools designed to facilitate Mac malware analysis (e.g. [OSX/FruitFly](https://speakerdeck.com/patrickwardle/fruitfly-via-a-custom-c-and-c-server)), and vulnerability hunting (e.g. [Installers/Updaters](https://speakerdeck.com/patrickwardle/defcon-2017-death-by-1000-installers-its-all-broken)).
As detailed in the 'Quick Start' section, to use Proc Info in your Xcode project perform the following steps.
**1. Add the Proc Info library to your Xcode project:**<br>
To add the Proc Info library to your Xcode project simply drag and drop the library (`lib/libprocInfo.a`), into the File Navigator. In the resulting 'file add' popup, make sure the 'Copy items if needed' option is selected:
<p align="center"><img src="https://objective-see.com/images/PI/addLib.png" width="600"></p>
**2. Add Apple's OpenBSM library to your Xcode project:**<br>
Select your project in Xcode, then click on the 'Build Phases' tab. In the 'Link Binary With Libraries' section, click the '+' to bring up the prompt for adding frameworks and libraries. Type `bsm` in the search box. Then select `libbsm.tbd` and click 'Add':
<p align="center"><img src="https://objective-see.com/images/PI/addLibBSM.png" width="400"></p>
**3. Add the 'Proc Info' library header file to your project:**<br>
In Xcode click, 'File' then 'Add Files to <your project name>' Browse to the location of the `procInfo.h` header file, and click 'Add.' Note, you can also add the `procInfo.h` file into your project simply by dragging and dropping it into Xcode.
Your Xcode project should now look something like this:
<p align="center"><img src="https://objective-see.com/images/PI/addedFiles.png" width="214"></p>
Hit Product->Build to compile and link your project. Assuming it cleanly builds, now it's time to start writing code to unlock the power of the Proc Info library :)
Before getting into coding specifics, its important to understand the `Process` and `Binary` objects. A `Process` object represents a instance of a running process. Looking at the header file `procInfo.h` one can see it contains information about the process such as:
+ pid
+ ppid
+ user
+ ancestors
+ arguments
Each `Process` object also has an associated `Binary` object that represents the on-disk image of the main executable which backs the process. The 'Binary' object contains information such as:
+ name
+ full path
+ file attributes
+ signing information
The signing information includes:
+ signing status
+ signing authorities
+ whether its an Apple binary
+ from the app store
With this information, one can use the library to answer questions such as:
+ *"What are all running processes on my system that don't belong to Apple proper?"*
+ *"What are the arguments of the process that was just spawned?"*
+ *"Is that process from the Mac App Store?"*
+ ...and many more!
**Retrieving Information about an Arbitrary Process:**
Via the Proc Info library one can create `Process` objects for arbitrary processes. Simply invoke the `Process` `init:` method with the process identifier (`pid_t`) of a running process:
```Objective-C
//init process obj
Process* process = [[Process alloc] init:1337];
```
This will create a `Process` object for the specified process, that will contain the aforementioned process characteristics (ancestors, arguments, `Binary` object, etc). You can directly access this (e.g. `process.binary.isApple`). Here, we simply dump it to `stdout` via `NSLog()`:
```Objective-C
//dump process info
NSLog(@"process: %@", process);
//output
process:
pid: 1337
path: /Applications/Calculator.app/Contents/MacOS/Calculator
user: 501
args: (
"/Applications/Calculator.app/Contents/MacOS/Calculator"
)
ancestors: (
557,
554,
353,
1
)
binary:
name: Calculator
path: /Applications/Calculator.app/Contents/MacOS/Calculator
attributes: {
NSFileCreationDate = "2017-03-23 00:27:11 +0000";
NSFileExtensionHidden = 0;
NSFileGroupOwnerAccountID = 0;
NSFileGroupOwnerAccountName = wheel;
NSFileHFSCreatorCode = 0;
NSFileHFSTypeCode = 0;
NSFileModificationDate = "2017-03-23 00:27:11 +0000";
NSFileOwnerAccountID = 0;
NSFileOwnerAccountName = root;
NSFilePosixPermissions = 493;
NSFileReferenceCount = 1;
NSFileSize = 199520;
NSFileSystemFileNumber = 92435925;
NSFileSystemNumber = 16777220;
NSFileType = NSFileTypeRegular;
}
signing info: {
signatureStatus = 0;
signedByApple = 1;
signingAuthorities = (
"Software Signing",
"Apple Code Signing Certification Authority",
"Apple Root CA"
);
} (isApple: 1 / isAppStore: 0)
```
**Retrieving Information about all Running Processes:**
The Proc Info library can also provide information about all running processes via the `ProcInfo` object's `currentProcesses` method. This method returns an array of `Process` objects; one for each running process:
```Objective-C
//enum all existing procs
for(Process* process in [processInfo currentProcesses])
{
//query/examine each process...
//dump process info
NSLog(@"process: %@", process);
}
```
Note that this method may take a few seconds to execute, as generating and verifying the cryptographic signing information for all processes is somewhat time/CPU consuming. As such, it is recommended that you invoke this logic (i.e. the `currentProcesses` method) on a background thread.
**Monitoring Process Start and Exit Events:**
One of the most powerful features of the Proc Info library is its ability to asynchronously monitor for process events such as creation (`exec`, `spawn`, `fork`) and exit. When running with root privileges (recommended!) it uses Apple BSM auditing events to such process events. (For background on BSM auditing see ["OpenBSM auditd on OS X: these are the logs you are looking for"](http://ilostmynotes.blogspot.com/2013/10/openbsm-auditd-on-os-x-these-are-logs.html).
In order to begin monitoring for such events first declare a block to pass to the library. This block's type should be `ProcessCallbackBlock` which has been typedef'd in the `procInfo.h` header file as:
```Objective-C
typedef void (^ProcessCallbackBlock)(Process*);
```
From this typedef, one can see this block will invoked with a pointer to a `Process` object, which is (as expected) represents the process which triggered the event. After creating a callback block, simply invoke the Proc Info `start:` method, passing in the block. This will kickoff asynchronous process monitoring. Now, anytime a process creation or exit event occurs, the code in the block will be automatically invoked!
One can be query returned `Process` object for the event type (`EVENT_FORK`, `EVENT_EXIT`, etc). If the event was not an exit event, the `Process` object will be fully instantiated, thus containing information such as ancestors, arguments, `Binary` object, etc. Note that for `EVENT_EXIT` events, the `Process` object will only contain the process identifier (`pid`) and the processes exit code.
Below is some example code that will call into the Proc Info library to asynchronously monitor for process events. Once the library detects such events, it will automatically invoke the passed in `block` which here, just examines the event type and then dumps information about the process to `stdout`:
```Objective-C
//define block
// ->automatically invoked upon process events
ProcessCallbackBlock block = ^(Process* process)
{
//process start event
// ->fork, spawn, exec, etc.
if(process.type != EVENT_EXIT)
{
//print
NSLog(@"process start: %@\n", process);
}
//process exit event
else
{
//print
// ->only pid
NSLog(@"process exit: %d\n", process.pid);
}
};
//start monitoring
// ->pass in block for events
[processInfo start:block];
//run loop
// ->as don't want to exit
[[NSRunLoop currentRunLoop] run];
```
Executing this code, and starting a process such as `Calculator.app` results in the following output:
```Objective-C
# ./procInfoExample:
process start:
pid: 1337
path: /Applications/Calculator.app/Contents/MacOS/Calculator
user: 501
args: (
"/Applications/Calculator.app/Contents/MacOS/Calculator"
)
ancestors: (
557,
554,
353,
1
)
binary: name: Calculator
path: /Applications/Calculator.app/Contents/MacOS/Calculator
attributes: {
NSFileCreationDate = "2017-03-23 00:27:11 +0000";
NSFileExtensionHidden = 0;
NSFileGroupOwnerAccountID = 0;
NSFileGroupOwnerAccountName = wheel;
NSFileHFSCreatorCode = 0;
NSFileHFSTypeCode = 0;
NSFileModificationDate = "2017-03-23 00:27:11 +0000";
NSFileOwnerAccountID = 0;
NSFileOwnerAccountName = root;
NSFilePosixPermissions = 493;
NSFileReferenceCount = 1;
NSFileSize = 199520;
NSFileSystemFileNumber = 92435925;
NSFileSystemNumber = 16777220;
NSFileType = NSFileTypeRegular;
}
signing info: {
signatureStatus = 0;
signedByApple = 1;
signingAuthorities = (
"Software Signing",
"Apple Code Signing Certification Authority",
"Apple Root CA"
);
} (isApple: 1 / isAppStore: 0)
2017-08-07 08:49:02.199 procInfoExample[10393:3296896] process exit: 1337
```
It should be noted that if the Proc Info library is not running with root privileges, or is executed on an older version of macOS (pre 10.12.4) it will only monitor for application events (i.e. not terminal nor background processes). This is because in order to safely monitor for audit events, root and recent version of macOS is required.
**Mahalo!**<br>
This product is supported by the following patrons:
+ Halo Privacy
+ Ash Morgan
+ Nando Mendonca
+ Khalil Sehnaoui
+ Jeff Golden
+ Geoffrey Weber
+ Ming
+ Peter Sinclair
+ trifero
+ Keelian Wardle
+ Chad Collins
+ Shain Singh
+ David Sulpy
+ Martin OConnell
+ Bill Smartt
+ Mike Windham
+ Brent Joyce
+ Russell Imrie
+ Michael Thomas
+ Andy One
+ Edmund Harriss
+ Brad Knowles
+ Tom Smith
+ Chuck Talk
+ Derivative Fool
+ Joaquim Espinhara
+ Rudolf Coetzee
+ Chris Ferebee
+ Les Aker
+ Allen Hancock
+ Stuart Ashenbrenner
+ Gamer_Bot
Want to add your support? Check out my [patreon page](https://www.patreon.com/objective_see) :)
================================================
FILE: lib/procInfo.h
================================================
//
// File: procInfo.h
// Project: Proc Info
//
// Created by: Patrick Wardle
// Copyright: 2017 Objective-See
// License: Creative Commons Attribution-NonCommercial 4.0 International License
//
#ifndef procInfo_h
#define procInfo_h
#import <libproc.h>
#import <sys/sysctl.h>
#import <Foundation/Foundation.h>
/* CLASSES */
@class Binary;
@class Process;
/* DEFINES */
//from audit_kevents.h
#define EVENT_EXIT 1
#define EVENT_FORK 2
#define EVENT_EXECVE 23
#define EVENT_EXEC 27
#define EVENT_SPAWN 43190
//signers
enum Signer{None, Apple, AppStore, DevID, AdHoc};
//signature status
#define KEY_SIGNATURE_STATUS @"signatureStatus"
//signer
#define KEY_SIGNATURE_SIGNER @"signatureSigner"
//signing auths
#define KEY_SIGNATURE_AUTHORITIES @"signatureAuthorities"
//code signing id
#define KEY_SIGNATURE_IDENTIFIER @"signatureIdentifier"
//entitlements
#define KEY_SIGNATURE_ENTITLEMENTS @"signatureEntitlements"
/* TYPEDEFS */
//block for library
typedef void (^ProcessCallbackBlock)(Process* _Nonnull);
/* OBJECT: PROCESS INFO */
@interface ProcInfo : NSObject
//init w/ flag
// flag dictates if CPU-intensive logic (code signing, etc) should be preformed
-(id _Nullable)init:(BOOL)goEasy;
//start monitoring
-(void)start:(ProcessCallbackBlock _Nonnull )callback;
//stop monitoring
-(void)stop;
//get list of running processes
-(NSMutableArray* _Nonnull)currentProcesses;
@end
/* OBJECT: PROCESS */
@interface Process : NSObject
/* PROPERTIES */
//pid
@property pid_t pid;
//ppid
@property pid_t ppid;
//user id
@property uid_t uid;
//type
// used by process mon
@property u_int16_t type;
//exit code
@property u_int32_t exit;
//path
@property(nonatomic, retain)NSString* _Nullable path;
//args
@property(nonatomic, retain)NSMutableArray* _Nonnull arguments;
//ancestors
@property(nonatomic, retain)NSMutableArray* _Nonnull ancestors;
//signing info
@property(nonatomic, retain)NSMutableDictionary* _Nonnull signingInfo;
//Binary object
// has path, hash, etc
@property(nonatomic, retain)Binary* _Nonnull binary;
//timestamp
@property(nonatomic, retain)NSDate* _Nonnull timestamp;
/* METHODS */
//init with a pid
// method will then (try) fill out rest of object
-(id _Nullable)init:(pid_t)processID;
//generate signing info
// also classifies if Apple/from App Store/etc.
-(void)generateSigningInfo:(SecCSFlags)flags;
//set process's path
-(void)pathFromPid;
//generate list of ancestors
-(void)enumerateAncestors;
//class method
// get's parent of arbitrary process
+(pid_t)getParentID:(pid_t)child;
@end
/* OBJECT: BINARY */
@interface Binary : NSObject
{
}
/* PROPERTIES */
//path
@property(nonatomic, retain)NSString* _Nonnull path;
//name
@property(nonatomic, retain)NSString* _Nonnull name;
//icon
@property(nonatomic, retain)NSImage* _Nonnull icon;
//file attributes
@property(nonatomic, retain)NSDictionary* _Nullable attributes;
//spotlight meta data
@property(nonatomic, retain)NSDictionary* _Nullable metadata;
//bundle
// nil for non-apps
@property(nonatomic, retain)NSBundle* _Nullable bundle;
//signing info
@property(nonatomic, retain)NSDictionary* _Nonnull signingInfo;
//hash
@property(nonatomic, retain)NSMutableString* _Nonnull sha256;
//identifier
// either signing id or sha256 hash
@property(nonatomic, retain)NSString* _Nonnull identifier;
/* METHODS */
//init w/ a path
-(id _Nonnull)init:(NSString* _Nonnull)path;
/* the following methods are rather CPU-intensive
as such, if the proc monitoring is run with the 'goEasy' option, they aren't automatically invoked
*/
//get an icon for a process
// for apps, this will be app's icon, otherwise just a standard system one
-(void)getIcon;
//generate signing info (statically)
-(void)generateSigningInfo:(SecCSFlags)flags;
/* the following methods are not invoked automatically
as such, if you code has to manually invoke them if you want this info
*/
//generate hash
// algo: sha256
-(void)generateHash;
//generate id
// either signing id, or sha256 hash
-(void)generateIdentifier;
@end
#endif
================================================
FILE: procInfo/Binary.m
================================================
//
// File: Binary.m
// Project: Proc Info
//
// Created by: Patrick Wardle
// Copyright: 2017 Objective-See
// License: Creative Commons Attribution-NonCommercial 4.0 International License
//
#import "Consts.h"
#import "Signing.h"
#import "procInfo.h"
#import "Utilities.h"
#import <CommonCrypto/CommonDigest.h>
@implementation Binary
@synthesize icon;
@synthesize name;
@synthesize path;
@synthesize bundle;
@synthesize metadata;
@synthesize attributes;
//init binary object
// note: CPU-intensive logic (code signing, etc) called manually
-(id)init:(NSString*)binaryPath
{
//init super
self = [super init];
if(nil != self)
{
//not a full path?
if(YES != [binaryPath hasPrefix:@"/"])
{
//try find via 'which'
self.path = PI_which(binaryPath);
if(nil == self.path)
{
//stuck with short path
self.path = binaryPath;
}
}
//full path
// use as is
else
{
//save path
self.path = binaryPath;
}
//try load app bundle
// will be nil for non-apps
[self getBundle];
//get name
[self getName];
//get file attributes
[self getAttributes];
//get meta data (spotlight)
[self getMetadata];
}
return self;
}
//try load app bundle
// will be nil for non-apps
-(void)getBundle
{
//first try just with path
self.bundle = [NSBundle bundleWithPath:path];
//that failed?
// try find it dynamically
if(nil == self.bundle)
{
//find bundle
self.bundle = PI_findAppBundle(path);
}
return;
}
//figure out binary's name
// either via app bundle, or from path
-(void)getName
{
//first try get name from app bundle
// specifically, via grab name from 'CFBundleName'
if(nil != self.bundle)
{
//extract name
self.name = [self.bundle infoDictionary][@"CFBundleName"];
}
//no app bundle || no 'CFBundleName'
// just use last component from path
if(nil == self.name)
{
//set name
self.name = [self.path lastPathComponent];
}
return;
}
//get file attributes
-(void)getAttributes
{
//grab (file) attributes
self.attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:self.path error:nil];
return;
}
//get (spotlight) meta data
-(void)getMetadata
{
//md item ref
MDItemRef mdItem = nil;
//attributes names
CFArrayRef attributeNames = nil;
//create
mdItem = MDItemCreate(kCFAllocatorDefault, (CFStringRef)self.path);
if(nil == mdItem)
{
//bail
goto bail;
}
//copy names
attributeNames = MDItemCopyAttributeNames(mdItem);
if(nil == attributeNames)
{
//bail
goto bail;
}
//get metadata
self.metadata = CFBridgingRelease(MDItemCopyAttributes(mdItem, attributeNames));
bail:
//release names
if(NULL != attributeNames)
{
//release
CFRelease(attributeNames);
//unset
attributeNames = NULL;
}
//release md item
if(NULL != mdItem)
{
//release
CFRelease(mdItem);
//unset
mdItem = NULL;
}
return;
}
//get an icon for a process
// for apps, this will be app's icon, otherwise just a standard system one
-(void)getIcon
{
//icon's file name
NSString* iconFile = nil;
//icon's path
NSString* iconPath = nil;
//icon's path extension
NSString* iconExtension = nil;
//skip 'short' paths
// otherwise system logs an error
if( (YES != [self.path hasPrefix:@"/"]) &&
(nil == self.bundle) )
{
//bail
goto bail;
}
//for app's
// extract their icon
if(nil != self.bundle)
{
//get file
iconFile = self.bundle.infoDictionary[@"CFBundleIconFile"];
//get path extension
iconExtension = [iconFile pathExtension];
//if its blank (i.e. not specified)
// go with 'icns'
if(YES == [iconExtension isEqualTo:@""])
{
//set type
iconExtension = @"icns";
}
//set full path
iconPath = [self.bundle pathForResource:[iconFile stringByDeletingPathExtension] ofType:iconExtension];
//load it
self.icon = [[NSImage alloc] initWithContentsOfFile:iconPath];
}
//process is not an app or couldn't get icon
// try to get it via shared workspace
if( (nil == self.bundle) ||
(nil == self.icon) )
{
//extract icon
self.icon = [[NSWorkspace sharedWorkspace] iconForFile:self.path];
}
//make standard size...
[self.icon setSize:NSMakeSize(128, 128)];
bail:
return;
}
//statically, generate signing info
-(void)generateSigningInfo:(SecCSFlags)flags
{
//extract signing info statically
self.signingInfo = extractSigningInfo(0, self.path, flags);
return;
}
//generate hash
-(void)generateHash
{
//file's contents
NSData* fileContents = nil;
//hash digest
uint8_t digestSHA256[CC_SHA256_DIGEST_LENGTH] = {0};
//load file
fileContents = [NSData dataWithContentsOfFile:self.path];
if( (0 == fileContents.length) ||
(NULL == fileContents.bytes) )
{
//bail
goto bail;
}
//clear buffer
bzero(digestSHA256, CC_SHA256_DIGEST_LENGTH);
//sha it
CC_SHA256(fileContents.bytes, (unsigned int)fileContents.length, digestSHA256);
//now init
self.sha256 = [NSMutableString string];
//convert to NSString
// iterate over each byte in computed digest and format
for(NSUInteger index=0; index < CC_SHA256_DIGEST_LENGTH; index++)
{
//format/append
[self.sha256 appendFormat:@"%02X", digestSHA256[index]];
}
bail:
return;
}
//generate id
// either signing id, or sha256 hash
// note: will generate signing info if needed
-(void)generateIdentifier
{
//generate signing info?
if(nil == self.signingInfo)
{
//generate
[self generateSigningInfo:kSecCSDefaultFlags];
}
//validly signed binary?
// use its signing identifier
if( (noErr == [self.signingInfo[KEY_SIGNATURE_STATUS] intValue]) &&
(0 != [self.signingInfo[KEY_SIGNATURE_AUTHORITIES] count]) &&
(nil != self.signingInfo[KEY_SIGNATURE_IDENTIFIER]) )
{
//use signing id
self.identifier = self.signingInfo[KEY_SIGNATURE_IDENTIFIER];
}
//not validly signed or unsigned
// generate sha256 hash for identifier
else
{
//generate hash?
if(0 != self.sha256.length)
{
//hash
[self generateHash];
}
//use hash
self.identifier = self.sha256;
}
return;
}
//for pretty printing
-(NSString *)description
{
//pretty print
return [NSString stringWithFormat: @"name: %@\npath: %@\nattributes: %@\nsigning info: %@", self.name, self.path, self.attributes, self.signingInfo];
}
@end
================================================
FILE: procInfo/Consts.h
================================================
//
// File: Consts.h
// Project: Proc Info
//
// Created by: Patrick Wardle
// Copyright: 2017 Objective-See
// License: Creative Commons Attribution-NonCommercial 4.0 International License
//
#ifndef Consts_h
#define Consts_h
//OS version x
#define OS_MAJOR_VERSION_X 10
//OS version lion
#define OS_MINOR_VERSION_LION 8
//OS version sierra
#define OS_MINOR_VERSION_SIERRA 12
//audit pipe
#define AUDIT_PIPE "/dev/auditpipe"
//audit class for proc events
#define AUDIT_CLASS_PROCESS 0x00000080
//audit class for exec events
#define AUDIT_CLASS_EXEC 0x40000000
//key for stdout output
#define STDOUT @"stdOutput"
//key for stderr output
#define STDERR @"stdError"
//key for exit code
#define EXIT_CODE @"exitCode"
//path to codesign
#define CODE_SIGN @"/usr/bin/codesign"
//entitlements
#define KEY_SIGNING_ENTITLEMENTS @"entitlements"
#endif /* Consts_h */
================================================
FILE: procInfo/Process.m
================================================
//
// File: Process.m
// Project: Proc Info
//
// Created by: Patrick Wardle
// Copyright: 2017 Objective-See
// License: Creative Commons Attribution-NonCommercial 4.0 International License
//
#import "Signing.h"
#import "procInfo.h"
#import "Utilities.h"
@implementation Process
@synthesize pid;
@synthesize exit;
@synthesize path;
@synthesize ppid;
@synthesize ancestors;
@synthesize arguments;
@synthesize timestamp;
@synthesize signingInfo;
//init
-(id)init
{
//init super
self = [super init];
if(nil != self)
{
//alloc array for args
arguments = [NSMutableArray array];
//alloc array for parents
ancestors = [NSMutableArray array];
//alloc array for args
arguments = [NSMutableArray array];
//set start time
timestamp = [NSDate date];
//init pid
self.pid = -1;
//init ppid
self.ppid = -1;
//init user
self.uid = -1;
//init exit
self.exit = -1;
}
return self;
}
//init with a pid
// method will then (try) fill out rest of object
-(id)init:(pid_t)processID
{
//init self/super
self = [self init];
if(self)
{
//save pid
self.pid = processID;
//set parent
self.ppid = [[self class] getParentID:self.pid];
//get path
[self pathFromPid];
if(0 == self.path.length)
{
#ifdef DEBUG
//err msg
NSLog(@"ERROR: failed to find path for process %d\n", self.pid);
#endif
//unset
self = nil;
//bail
goto bail;
}
//set args
[self getArgs];
//set user
[self getUser];
//enum ancestors
[self enumerateAncestors];
//init binary
self.binary = [[Binary alloc] init:self.path];
}
bail:
return self;
}
//get uid
// sets 'user' instance var
-(void)getUser
{
//kinfo_proc struct
struct kinfo_proc processStruct = {0};
//size
size_t procBufferSize = 0;
//mib
const u_int mibLength = 4;
//syscall result
int sysctlResult = -1;
//init buffer length
procBufferSize = sizeof(processStruct);
//init mib
int mib[mibLength] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, self.pid};
//make syscall
sysctlResult = sysctl(mib, mibLength, &processStruct, &procBufferSize, NULL, 0);
//check if got ppid
if( (noErr == sysctlResult) &&
(0 != procBufferSize) )
{
//save uid
self.uid = processStruct.kp_eproc.e_ucred.cr_uid;
}
return;
}
//generate list of ancestors
-(void)enumerateAncestors
{
//current process id
pid_t currentPID = -1;
//parent pid
pid_t parentPID = -1;
//add parent
if(-1 != self.ppid)
{
//add
[self.ancestors addObject:[NSNumber numberWithInt:self.ppid]];
//set current to parent
currentPID = self.ppid;
}
//don't know parent
// just start with self
else
{
//start w/ self
currentPID = self.pid;
}
//add until we get to to end (pid 0)
// or error out during the traversal
while(YES)
{
//get parent pid
parentPID = [Process getParentID:currentPID];
if( (0 == parentPID) ||
(-1 == parentPID) ||
(currentPID == parentPID) )
{
//bail
break;
}
//update
currentPID = parentPID;
//add
[self.ancestors addObject:[NSNumber numberWithInt:parentPID]];
}
return;
}
//set process's path
-(void)pathFromPid
{
//buffer for process path
char pathBuffer[PROC_PIDPATHINFO_MAXSIZE] = {0};
//status
int status = -1;
//'management info base' array
int mib[3] = {0};
//system's size for max args
int systemMaxArgs = 0;
//process's args
char* processArgs = NULL;
//size of buffers, etc
size_t size = 0;
//clear out buffer
bzero(pathBuffer, PROC_PIDPATHINFO_MAXSIZE);
//1st:
// attempt to get path via 'proc_pidpath()'
status = proc_pidpath(self.pid, pathBuffer, sizeof(pathBuffer));
if( (0 != status) &&
(0 != strlen(pathBuffer)) )
{
//init path
self.path = [NSString stringWithUTF8String:pathBuffer];
//all set
goto bail;
}
//2nd:
// try via process's args ('KERN_PROCARGS2')
//init mib
// want system's size for max args
mib[0] = CTL_KERN;
mib[1] = KERN_ARGMAX;
//set size
size = sizeof(systemMaxArgs);
//get system's size for max args
if(-1 == sysctl(mib, 2, &systemMaxArgs, &size, NULL, 0))
{
//bail
goto bail;
}
//alloc space for args
processArgs = calloc(systemMaxArgs, sizeof(char));
if(NULL == processArgs)
{
//bail
goto bail;
}
//init mib
// want process args
mib[0] = CTL_KERN;
mib[1] = KERN_PROCARGS2;
mib[2] = pid;
//set size
size = (size_t)systemMaxArgs;
//get process's args
if(-1 == sysctl(mib, 3, processArgs, &size, NULL, 0))
{
//bail
goto bail;
}
//sanity check
// ensure buffer is somewhat sane
if(size <= sizeof(int))
{
//bail
goto bail;
}
//extract process name
// follows # of args (int) and is NULL-terminated
self.path = [NSString stringWithUTF8String:processArgs + sizeof(int)];
bail:
//free process args
if(NULL != processArgs)
{
//free
free(processArgs);
//unset
processArgs = NULL;
}
return;
}
//check if process is alive
-(BOOL)isProcessAlive
{
//ret var
BOOL bIsAlive = NO;
//signal status
int signalStatus = -1;
//send kill with 0 to determine if alive
// see: http://stackoverflow.com/questions/9152979/check-if-process-exists-given-its-pid
signalStatus = kill(self.pid, 0);
//is alive?
if( (0 == signalStatus) ||
( (0 != signalStatus) && (errno != ESRCH) ) )
{
//alive!
bIsAlive = YES;
}
return bIsAlive;
}
//extract commandline args
// saves into 'arguments' ivar
-(void)getArgs
{
//'management info base' array
int mib[3] = {0};
//system's size for max args
int systemMaxArgs = 0;
//process's args
char* processArgs = NULL;
//# of args
int numberOfArgs = 0;
//start of (each) arg
char* argStart = NULL;
//size of buffers, etc
size_t size = 0;
//parser pointer
char* parser = NULL;
//init mib
// want system's size for max args
mib[0] = CTL_KERN;
mib[1] = KERN_ARGMAX;
//set size
size = sizeof(systemMaxArgs);
//get system's size for max args
if(-1 == sysctl(mib, 2, &systemMaxArgs, &size, NULL, 0))
{
//bail
goto bail;
}
//alloc space for args
processArgs = malloc(systemMaxArgs);
if(NULL == processArgs)
{
//bail
goto bail;
}
//init mib
// want process args
mib[0] = CTL_KERN;
mib[1] = KERN_PROCARGS2;
mib[2] = pid;
//set size
size = (size_t)systemMaxArgs;
//get process's args
if(-1 == sysctl(mib, 3, processArgs, &size, NULL, 0))
{
//bail
goto bail;
}
//sanity check
// ensure buffer is somewhat sane
if(size <= sizeof(int))
{
//bail
goto bail;
}
//extract number of args
// at start of buffer
memcpy(&numberOfArgs, processArgs, sizeof(numberOfArgs));
//init pointer to start of args
// they start right after # of args
parser = processArgs + sizeof(numberOfArgs);
//scan until end of process's NULL-terminated path
while(parser < &processArgs[size])
{
//scan till NULL-terminator
if(0x0 == *parser)
{
//end of exe name
break;
}
//next char
parser++;
}
//sanity check
// make sure end-of-buffer wasn't reached
if(parser == &processArgs[size])
{
//bail
goto bail;
}
//skip all trailing NULLs
// scan will end when non-NULL is found
while(parser < &processArgs[size])
{
//scan till NULL-terminator
if(0x0 != *parser)
{
//ok, got to argv[0]
break;
}
//next char
parser++;
}
//sanity check
// (again), make sure end-of-buffer wasn't reached
if(parser == &processArgs[size])
{
//bail
goto bail;
}
//parser should now point to argv[0], process name
// init arg start
argStart = parser;
//keep scanning until all args are found
// each is NULL-terminated
while(parser < &processArgs[size])
{
//each arg is NULL-terminated
// so scan till NULL, then save into array
if(*parser == '\0')
{
//save arg
if(NULL != argStart)
{
//save
[self.arguments addObject:[NSString stringWithUTF8String:argStart]];
}
//init string pointer to (possibly) next arg
argStart = ++parser;
//bail if we've hit arg cnt
if(self.arguments.count == numberOfArgs)
{
//bail
break;
}
}
//next char
parser++;
}
bail:
//free process args
if(NULL != processArgs)
{
//free
free(processArgs);
//unset
processArgs = NULL;
}
return;
}
//generate signing info
// also classifies if Apple/from App Store/etc.
-(void)generateSigningInfo:(SecCSFlags)flags
{
//extract signing info dynamically
self.signingInfo = extractSigningInfo(self.pid, nil, flags);
//failed?
// try extract signing info statically
if(nil == self.signingInfo)
{
//add 'all archs' / 'nested'
// cuz don't know which is/was running
flags |= kSecCSCheckAllArchitectures | kSecCSCheckNestedCode | kSecCSDoNotValidateResources;
//extract signing info statically
self.signingInfo = extractSigningInfo(0, self.binary.path, flags);
}
return;
}
//for pretty printing
-(NSString *)description
{
//pretty print
return [NSString stringWithFormat: @"pid: %d\npath: %@\nuser: %d\nargs: %@\nancestors: %@\n signing info: %@\n binary:\n%@", self.pid, self.path, self.uid, self.arguments, self.ancestors, self.signingInfo, self.binary];
}
//class method to get parent of arbitrary process
+(pid_t)getParentID:(pid_t)child
{
//parent id
pid_t parentID = -1;
//kinfo_proc struct
struct kinfo_proc processStruct = {0};
//size
size_t procBufferSize = 0;
//mib
const u_int mibLength = 4;
//syscall result
int sysctlResult = -1;
//init buffer length
procBufferSize = sizeof(processStruct);
//init mib
int mib[mibLength] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, child};
//make syscall
sysctlResult = sysctl(mib, mibLength, &processStruct, &procBufferSize, NULL, 0);
//check if got ppid
if( (noErr == sysctlResult) &&
(0 != procBufferSize) )
{
//save ppid
parentID = processStruct.kp_eproc.e_ppid;
}
return parentID;
}
@end
================================================
FILE: procInfo/ProcessMonitor.m
================================================
//
// File: ProcessMonitor.m
// Project: Proc Info
//
// Created by: Patrick Wardle
// Copyright: 2017 Objective-See
// License: Creative Commons Attribution-NonCommercial 4.0 International License
//
//disable incomplete/umbrella warnings
// otherwise complains about 'audit_kevents.h'
#pragma clang diagnostic ignored "-Wincomplete-umbrella"
#import "Consts.h"
#import "procInfo.h"
#import "Utilities.h"
#import <unistd.h>
#import <libproc.h>
#import <pthread.h>
#import <bsm/audit.h>
#import <sys/ioctl.h>
#import <sys/types.h>
#import <bsm/libbsm.h>
#import <Cocoa/Cocoa.h>
#import <bsm/audit_kevents.h>
#import <security/audit/audit_ioctl.h>
@interface ProcInfo()
/* INSTANCE VARIABLES */
//skip CPU-intensive logic
@property BOOL goEasy;
//callback block
@property(nonatomic, copy)ProcessCallbackBlock processCallback;
//stop flag
@property BOOL shouldStop;
@end
@implementation ProcInfo
//init
// just check OS version
-(id _Nullable)init
{
//super
self = [super init];
if(self)
{
//make sure OS is supported
// for now, OS X 10.8+ though could be earlier?
if(YES != PI_isSupportedOS())
{
//err msg
NSLog(@"ERROR: %@ is not a supported OS", PI_getOSVersion());
//unset
self = nil;
//bail
goto bail;
}
}
bail:
return self;
}
//init w/ flag
// flag dictates if CPU-intensive logic (code signing, etc) should be preformed
-(id _Nullable)init:(BOOL)goEasy;
{
//init
// calls 'super' too
self = [self init];
if(self)
{
//save mode
self.goEasy = goEasy;
}
bail:
return self;
}
//start monitoring
// note: requires root/macOS 10.12.4+ for full monitoring
-(void)start:(ProcessCallbackBlock)callback
{
//OS version info
NSDictionary* osVersionInfo = nil;
//save
self.processCallback = callback;
//get OS version info
osVersionInfo = PI_getOSVersion();
//do basic (app) monitoring
// if not root, or OS version is < 10.12.4 (due to kernel bug)
if( (0 != getuid()) ||
([osVersionInfo[@"minorVersion"] intValue] < OS_MINOR_VERSION_SIERRA) ||
(([osVersionInfo[@"minorVersion"] intValue] == OS_MINOR_VERSION_SIERRA) && ([osVersionInfo[@"bugfixVersion"] intValue] < 4)) )
{
//setup app monitoring
[self appMonitor];
}
//otherwise, enable full monitoring
else
{
//start process monitoring via openBSM to get apps & procs
// sits in while(YES) loop, so we invoke call in a background thread
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
//monitor
[self monitor];
});
}
return;
}
//stop monitoring
-(void)stop
{
//stop app monitoring
// can always call, even if we didn't setup app monitor
[[NSNotificationCenter defaultCenter] removeObserver: self];
//set 'stop' monitor bool
// is checked in 'monitor' method as termination condition
self.shouldStop = YES;
return;
}
//monitor for new process events
-(void)monitor
{
//event mask
// what event classes to watch for
u_int eventClasses = AUDIT_CLASS_EXEC | AUDIT_CLASS_PROCESS;
//file pointer to audit pipe
FILE* auditFile = NULL;
//file descriptor for audit pipe
int auditFileDescriptor = -1;
//status var
int status = -1;
//preselect mode
int mode = -1;
//queue length
int maxQueueLength = -1;
//record buffer
u_char* recordBuffer = NULL;
//token struct
tokenstr_t tokenStruct = {0};
//total length of record
int recordLength = -1;
//amount of record left to process
int recordBalance = -1;
//amount currently processed
int processedLength = -1;
//process record obj
Process* process = nil;
//last fork
Process* lastFork = nil;
//argument
NSString* argument = nil;
//open audit pipe for reading
auditFile = fopen(AUDIT_PIPE, "r");
if(auditFile == NULL)
{
#ifdef DEBUG
//err msg
NSLog(@"ERROR: failed to open audit pipe %s", AUDIT_PIPE);
#endif
//bail
goto bail;
}
//grab file descriptor
auditFileDescriptor = fileno(auditFile);
//init mode
mode = AUDITPIPE_PRESELECT_MODE_LOCAL;
//set preselect mode
status = ioctl(auditFileDescriptor, AUDITPIPE_SET_PRESELECT_MODE, &mode);
if(-1 == status)
{
//bail
goto bail;
}
//grab max queue length
status = ioctl(auditFileDescriptor, AUDITPIPE_GET_QLIMIT_MAX, &maxQueueLength);
if(-1 == status)
{
//bail
goto bail;
}
//set queue length to max
status = ioctl(auditFileDescriptor, AUDITPIPE_SET_QLIMIT, &maxQueueLength);
if(-1 == status)
{
//bail
goto bail;
}
//set preselect flags
// event classes we're interested in
status = ioctl(auditFileDescriptor, AUDITPIPE_SET_PRESELECT_FLAGS, &eventClasses);
if(-1 == status)
{
//bail
goto bail;
}
//set non-attributable flags
// event classes we're interested in
status = ioctl(auditFileDescriptor, AUDITPIPE_SET_PRESELECT_NAFLAGS, &eventClasses);
if(-1 == status)
{
//bail
goto bail;
}
//forever
// read/parse/process audit records
while(YES)
{
@autoreleasepool
{
//first check termination flag/condition
if(YES == self.shouldStop)
{
//bail
goto bail;
}
//reset process record object
process = nil;
//free prev buffer
if(NULL != recordBuffer)
{
//free
free(recordBuffer);
//unset
recordBuffer = NULL;
}
//read a single audit record
// note: buffer is allocated by function, so must be freed when done
recordLength = au_read_rec(auditFile, &recordBuffer);
//sanity check
if(-1 == recordLength)
{
//continue
continue;
}
//init (remaining) balance to record's total length
recordBalance = recordLength;
//init processed length to start (zer0)
processedLength = 0;
//parse record
// read all tokens/process
while(0 != recordBalance)
{
//extract token
// and sanity check
if(-1 == au_fetch_tok(&tokenStruct, recordBuffer + processedLength, recordBalance))
{
//error
// skip record
break;
}
//ignore records that are not related to process exec'ing/spawning
// gotta wait till we hit/capture a AUT_HEADER* though, as this has the event type
if( (nil != process) &&
(YES != [self shouldProcessRecord:process.type]) )
{
//bail
// skips rest of record
break;
}
//process token(s)
// create Process object, etc
switch(tokenStruct.id)
{
//handle start of record
// grab event type, which allows us to ignore events not of interest
case AUT_HEADER32:
case AUT_HEADER32_EX:
case AUT_HEADER64:
case AUT_HEADER64_EX:
{
//create a new process
process = [[Process alloc] init];
//save type
process.type = tokenStruct.tt.hdr32.e_type;
break;
}
//path
// note: this might be updated/replaced later (if it's '/dev/null', etc)
case AUT_PATH:
{
//save path
process.path = [NSString stringWithUTF8String:tokenStruct.tt.path.path];
break;
}
//subject
// extract/save pid || ppid
// all these cases can be treated as subj32 cuz only accessing initial members
case AUT_SUBJECT32:
case AUT_SUBJECT32_EX:
case AUT_SUBJECT64:
case AUT_SUBJECT64_EX:
{
//SPAWN (pid/ppid)
// if there was an AUT_ARG32 (which always come first), that's the pid! so this will be the ppid
if(AUE_POSIX_SPAWN == process.type)
{
//no AUT_ARG32?
// set as pid, and try manually to get ppid
if(-1 == process.pid)
{
//set pid
process.pid = tokenStruct.tt.subj32.pid;
//manually get parent
process.ppid = [Process getParentID:process.pid];
}
//pid already set (via AUT_ARG32)
// this then, is the ppid
else
{
//set ppid
process.ppid = tokenStruct.tt.subj32.pid;
}
}
//FORK
// ppid (pid is in AUT_ARG32)
else if(AUE_FORK == process.type)
{
//set ppid
process.ppid = tokenStruct.tt.subj32.pid;
}
//AUE_EXEC/VE & AUE_EXIT
// this is the pid
else
{
//save pid
process.pid = tokenStruct.tt.subj32.pid;
//manually get parent
process.ppid = [Process getParentID:process.pid];
}
//get effective user id
process.uid = tokenStruct.tt.subj32.euid;
break;
}
//args
// SPAWN/FORK this is pid
case AUT_ARG32:
case AUT_ARG64:
{
//save pid
if( (AUE_POSIX_SPAWN == process.type) ||
(AUE_FORK == process.type) )
{
//32bit
if(AUT_ARG32 == tokenStruct.id)
{
//save
process.pid = tokenStruct.tt.arg32.val;
}
//64bit
else
{
//save
process.pid = (pid_t)tokenStruct.tt.arg64.val;
}
}
//FORK
// doesn't have token for path, so try manually find it now
if(AUE_FORK == process.type)
{
//set path
[process pathFromPid];
}
break;
}
//exec args
// just save into args
case AUT_EXEC_ARGS:
{
//save args
for(int i = 0; i<tokenStruct.tt.execarg.count; i++)
{
//try create arg
// this sometimes fails, not sure why?
argument = [NSString stringWithUTF8String:tokenStruct.tt.execarg.text[i]];
if(nil == argument)
{
//next
continue;
}
//add argument
[process.arguments addObject:argument];
}
break;
}
//exit
// save status
case AUT_EXIT:
{
//save
process.exit = tokenStruct.tt.exit.status;
break;
}
//record trailer
// end/save, etc
case AUT_TRAILER:
{
//end
if( (nil != process) &&
(YES == [self shouldProcessRecord:process.type]) )
{
//handle process exits
if(AUE_EXIT == process.type)
{
//handle
[self handleProcessExit:process];
}
//handle process starts
else
{
//also try get process path
// this is the most 'trusted way' (since exec_args can change)
[process pathFromPid];
//failed to get path at runtime
// if 'AUT_PATH' was something like '/dev/null' or '/dev/console' use arg[0]...yes this can be spoofed :/
if( ((0 == process.path.length) || (YES == [process.path hasPrefix:@"/dev/"])) &&
(0 != process.arguments.count) )
{
//use arg[0]
process.path = process.arguments.firstObject;
}
//save fork events
// this will have ppid that can be used for child events (exec/spawn, etc)
if(AUE_FORK == process.type)
{
//save
lastFork = process;
}
//when we don't have a ppid
// see if there was a 'matching' fork() that has it (only for non AUE_FORK events)
else if( (-1 == process.ppid) &&
(lastFork.pid == process.pid) )
{
//update
process.ppid = lastFork.ppid;
}
//handle new process
[self handleProcessStart:process];
}
}
//unset
process = nil;
break;
}
default:
;
}//process token
//add length of current token
processedLength += tokenStruct.len;
//subtract lenght of current token
recordBalance -= tokenStruct.len;
}
}//autorelease
} //while(YES)
bail:
//free buffer
if(NULL != recordBuffer)
{
//free
free(recordBuffer);
//unset
recordBuffer = NULL;
}
//close audit pipe
if(NULL != auditFile)
{
//close
fclose(auditFile);
//unset
auditFile = NULL;
}
return;
}
//check if event is one we care about
// for now, just anything associated with new processes/exits
-(BOOL)shouldProcessRecord:(u_int16_t)eventType
{
//flag
BOOL shouldProcess = NO;
//check
if( (eventType == AUE_EXEC) ||
(eventType == AUE_EXIT) ||
(eventType == AUE_FORK) ||
(eventType == AUE_EXECVE) ||
(eventType == AUE_POSIX_SPAWN) )
{
//set flag
shouldProcess = YES;
}
return shouldProcess;
}
//register for app launchings
-(void)appMonitor
{
//notification center
NSNotificationCenter* center = nil;
//get shared center
center = [[NSWorkspace sharedWorkspace] notificationCenter];
//register app start notification
[center addObserver:self selector:@selector(appEvent:) name:NSWorkspaceDidLaunchApplicationNotification object:nil];
//register app exit notifcation
[center addObserver:self selector:@selector(appEvent:) name:NSWorkspaceDidTerminateApplicationNotification object:nil];
return;
}
//automatically invoked when an app is started/exits
// create new process object and add to dictionary
-(void)appEvent:(NSNotification *)notification
{
//process object
Process* process = nil;
//pid
pid_t processID = -1;
//get process id
processID = [notification.userInfo[@"NSApplicationProcessIdentifier"] intValue];
//app start?
if(YES == [notification.name isEqualToString:@"NSWorkspaceDidLaunchApplicationNotification"])
{
//create a new process obj
process = [[Process alloc] init:processID];
if(nil == process)
{
#ifdef DEBUG
//err msg
NSLog(@"ERROR: failed to create process object for %d/%@", processID, notification.userInfo);
#endif
//bail
goto bail;
}
//start event
[self handleProcessStart:process];
}
//app exit
else
{
//alloc new process obj
process = [[Process alloc] init];
//manually set pid
process.pid = processID;
//manully set type to exit
process.type = EVENT_EXIT;
//exit event
[self handleProcessExit:process];
}
bail:
return;
}
//handle new process
// create Binary obj/enum/process ancestors, etc
-(void)handleProcessStart:(Process*)process
{
//default cs flags
// note: since this is dynamic check, we don't need to check all architectures, or skip resources, etc...
SecCSFlags flags = kSecCSDefaultFlags;
//sanity check
// should only occur for fork() events, which normally get superceeded by an exec(), etc
if( (-1 == process.pid) ||
(nil == process.path) )
{
//bail
goto bail;
}
//get parent
if(-1 == process.ppid)
{
//get ppid
process.ppid = [Process getParentID:process.pid];
}
//enumerate process ancestry
if(0 == process.ancestors.count)
{
//enumerate
[process enumerateAncestors];
}
//generate binary
process.binary = [[Binary alloc] init:process.path];
if(nil == process.binary)
{
#ifdef DEBUG
//err msg
NSLog(@"ERROR: failed to create binary object for %d/%@", process.pid, process.path);
#endif
//bail
goto bail;
}
//automatically generate signing info/icon?
// these can be skipped for performance reasons
if(YES != self.goEasy)
{
//generate signing info
// first will try dynamic, falling back to static
[process generateSigningInfo:flags];
//set icon
[process.binary getIcon];
}
//invoke user callback
self.processCallback(process);
bail:
return;
}
//handle process exit event
// as only have pid, just alert user
-(void)handleProcessExit:(Process*)process
{
//invoke user callback
self.processCallback(process);
return;
}
//return array of running processes
-(NSMutableArray*)currentProcesses
{
//default cs flags
// note: since this is dynamic check, we don't need to check all architectures, or skip resources, etc...
SecCSFlags flags = kSecCSDefaultFlags;
//current process
Process* currentProcess = nil;
//processes
NSMutableArray* processes = nil;
//alloc array
processes = [NSMutableArray array];
//iterate over all pids
// init process object w/ pid/path, etc
for(NSNumber* pid in PI_enumerateProcesses())
{
//create process obj
currentProcess = [[Process alloc] init:pid.intValue];
if(nil == currentProcess)
{
//skip
continue;
}
//generate signing info
[currentProcess generateSigningInfo:flags];
//add
[processes addObject:currentProcess];
}
return processes;
}
@end
================================================
FILE: procInfo/Signing.h
================================================
//
// File: Signing.h
// Project: Proc Info
//
// Created by: Patrick Wardle
// Copyright: 2017 Objective-See
// License: Creative Commons Attribution-NonCommercial 4.0 International License
//
#ifndef Signing_h
#define Signing_h
#import <AppKit/AppKit.h>
#import <Foundation/Foundation.h>
/* FUNCTIONS */
//get the signing info of a item
// pid specified: extract dynamic code signing info
// path specified: generate static code signing info
NSMutableDictionary* extractSigningInfo(pid_t pid, NSString* path, SecCSFlags flags);
//determine who signed item
NSNumber* extractSigner(SecStaticCodeRef code, SecCSFlags flags, BOOL isDynamic);
//validate a requirement
OSStatus validateRequirement(SecStaticCodeRef code, SecRequirementRef requirement, SecCSFlags flags, BOOL isDynamic);
//extract (names) of signing auths
NSMutableArray* extractSigningAuths(NSDictionary* signingDetails);
#endif
================================================
FILE: procInfo/Signing.m
================================================
//
// File: Signing.m
// Project: Proc Info
//
// Created by: Patrick Wardle
// Copyright: 2017 Objective-See
// License: Creative Commons Attribution-NonCommercial 4.0 International License
//
#import "Consts.h"
#import "Signing.h"
#import "procInfo.h"
#import "Utilities.h"
#import <Security/Security.h>
#import <SystemConfiguration/SystemConfiguration.h>
//get the signing info of a item
// pid specified: extract dynamic code signing info
// path specified: generate static code signing info
NSMutableDictionary* extractSigningInfo(pid_t pid, NSString* path, SecCSFlags flags)
{
//info dictionary
NSMutableDictionary* signingInfo = nil;
//status
OSStatus status = !errSecSuccess;
//static code ref
SecStaticCodeRef staticCode = NULL;
//dynamic code ref
SecCodeRef dynamicCode = NULL;
//signing details
CFDictionaryRef signingDetails = NULL;
//signing authorities
NSMutableArray* signingAuths = nil;
//init signing status
signingInfo = [NSMutableDictionary dictionary];
//dynamic code checks
// no path, dynamic check via pid
if(nil == path)
{
//generate dynamic code ref via pid
status = SecCodeCopyGuestWithAttributes(NULL, (__bridge CFDictionaryRef _Nullable)(@{(__bridge NSString *)kSecGuestAttributePid : [NSNumber numberWithInt:pid]}), kSecCSDefaultFlags, &dynamicCode);
if(errSecSuccess != status)
{
//set error
signingInfo[KEY_SIGNATURE_STATUS] = [NSNumber numberWithInt:status];
//bail
goto bail;
}
//validate code
status = SecCodeCheckValidity(dynamicCode, flags, NULL);
if(errSecSuccess != status)
{
//set error
signingInfo[KEY_SIGNATURE_STATUS] = [NSNumber numberWithInt:status];
//bail
goto bail;
}
//happily signed
signingInfo[KEY_SIGNATURE_STATUS] = [NSNumber numberWithInt:errSecSuccess];
//determine signer
// apple, app store, dev id, adhoc, etc...
signingInfo[KEY_SIGNATURE_SIGNER] = extractSigner(dynamicCode, flags, YES);
//extract signing info
status = SecCodeCopySigningInformation(dynamicCode, kSecCSSigningInformation, &signingDetails);
if(errSecSuccess != status)
{
//bail
goto bail;
}
}
//static code checks
else
{
//create static code ref via path
status = SecStaticCodeCreateWithPath((__bridge CFURLRef)([NSURL fileURLWithPath:path]), kSecCSDefaultFlags, &staticCode);
if(errSecSuccess != status)
{
//set error
signingInfo[KEY_SIGNATURE_STATUS] = [NSNumber numberWithInt:status];
//bail
goto bail;
}
//check signature
status = SecStaticCodeCheckValidity(staticCode, flags, NULL);
if(errSecSuccess != status)
{
//set error
signingInfo[KEY_SIGNATURE_STATUS] = [NSNumber numberWithInt:status];
//bail
goto bail;
}
//happily signed
signingInfo[KEY_SIGNATURE_STATUS] = [NSNumber numberWithInt:errSecSuccess];
//determine signer
// apple, app store, dev id, adhoc, etc...
signingInfo[KEY_SIGNATURE_SIGNER] = extractSigner(staticCode, flags, NO);
//extract signing info
status = SecCodeCopySigningInformation(staticCode, kSecCSSigningInformation, &signingDetails);
if(errSecSuccess != status)
{
//bail
goto bail;
}
}
//extract code signing id
if(nil != [(__bridge NSDictionary*)signingDetails objectForKey:(__bridge NSString*)kSecCodeInfoIdentifier])
{
//extract/save
signingInfo[KEY_SIGNATURE_IDENTIFIER] = [(__bridge NSDictionary*)signingDetails objectForKey:(__bridge NSString*)kSecCodeInfoIdentifier];
}
//extract entitlements
if(nil != [(__bridge NSDictionary*)signingDetails objectForKey:(__bridge NSString*)kSecCodeInfoEntitlementsDict])
{
//extract/save
signingInfo[KEY_SIGNATURE_ENTITLEMENTS] = [(__bridge NSDictionary*)signingDetails objectForKey:(__bridge NSString*)kSecCodeInfoEntitlementsDict];
}
//extract signing authorities
signingAuths = extractSigningAuths((__bridge NSDictionary *)(signingDetails));
if(0 != signingAuths.count)
{
//save
signingInfo[KEY_SIGNATURE_AUTHORITIES] = signingAuths;
}
bail:
//free signing info
if(NULL != signingDetails)
{
//free
CFRelease(signingDetails);
//unset
signingDetails = NULL;
}
//free dynamic code
if(NULL != dynamicCode)
{
//free
CFRelease(dynamicCode);
//unset
dynamicCode = NULL;
}
//free static code
if(NULL != staticCode)
{
//free
CFRelease(staticCode);
//unset
staticCode = NULL;
}
return signingInfo;
}
//determine who signed item
NSNumber* extractSigner(SecStaticCodeRef code, SecCSFlags flags, BOOL isDynamic)
{
//result
NSNumber* signer = nil;
//"anchor apple"
static SecRequirementRef isApple = nil;
//"anchor apple generic"
static SecRequirementRef isDevID = nil;
//"anchor apple generic and certificate leaf [subject.CN] = \"Apple Mac OS Application Signing\""
static SecRequirementRef isAppStore = nil;
//token
static dispatch_once_t onceToken = 0;
//only once
// init requirements
dispatch_once(&onceToken, ^{
//init apple signing requirement
SecRequirementCreateWithString(CFSTR("anchor apple"), kSecCSDefaultFlags, &isApple);
//init dev id signing requirement
SecRequirementCreateWithString(CFSTR("anchor apple generic"), kSecCSDefaultFlags, &isDevID);
//init app store signing requirement
SecRequirementCreateWithString(CFSTR("anchor apple generic and certificate leaf [subject.CN] = \"Apple Mac OS Application Signing\""), kSecCSDefaultFlags, &isAppStore);
});
//check 1: "is apple" (proper)
if(errSecSuccess == validateRequirement(code, isApple, flags, isDynamic))
{
//set signer to apple
signer = [NSNumber numberWithInt:Apple];
}
//check 2: "is app store"
// note: this is more specific than dev id, so do it first
else if(errSecSuccess == validateRequirement(code, isAppStore, flags, isDynamic))
{
//set signer to app store
signer = [NSNumber numberWithInt:AppStore];
}
//check 3: "is dev id"
else if(errSecSuccess == validateRequirement(code, isDevID, flags, isDynamic))
{
//set signer to dev id
signer = [NSNumber numberWithInt:DevID];
}
//otherwise
// has to be adhoc?
else
{
//set signer to ad hoc
signer = [NSNumber numberWithInt:AdHoc];
}
return signer;
}
//validate a requirement
OSStatus validateRequirement(SecStaticCodeRef code, SecRequirementRef requirement, SecCSFlags flags, BOOL isDynamic)
{
//result
OSStatus result = -1;
//dynamic check?
if(YES == isDynamic)
{
//validate dynamically
result = SecCodeCheckValidity((SecCodeRef)code, flags, requirement);
}
//static check
else
{
//validate statically
result = SecStaticCodeCheckValidity(code, flags, requirement);
}
return result;
}
//extract (names) of signing auths
NSMutableArray* extractSigningAuths(NSDictionary* signingDetails)
{
//signing auths
NSMutableArray* authorities = nil;
//cert chain
NSArray* certificateChain = nil;
//index
NSUInteger index = 0;
//cert
SecCertificateRef certificate = NULL;
//common name on chert
CFStringRef commonName = NULL;
//init array for certificate names
authorities = [NSMutableArray array];
//get cert chain
certificateChain = [signingDetails objectForKey:(__bridge NSString*)kSecCodeInfoCertificates];
if(0 == certificateChain.count)
{
//no certs
goto bail;
}
//extract/save name of all certs
for(index = 0; index < certificateChain.count; index++)
{
//reset
commonName = NULL;
//extract cert
certificate = (__bridge SecCertificateRef)([certificateChain objectAtIndex:index]);
//get common name
if( (errSecSuccess == SecCertificateCopyCommonName(certificate, &commonName)) &&
(NULL != commonName) )
{
//save
[authorities addObject:(__bridge id _Nonnull)(commonName)];
//release
CFRelease(commonName);
}
}
bail:
return authorities;
}
================================================
FILE: procInfo/Utilities.h
================================================
//
// File: Utilities.h
// Project: Proc Info
//
// Created by: Patrick Wardle
// Copyright: 2017 Objective-See
// License: Creative Commons Attribution-NonCommercial 4.0 International License
//
#ifndef Utilties_h
#define Utilties_h
#import <Foundation/Foundation.h>
//given a path to binary
// parse it back up to find app's bundle
NSBundle* PI_findAppBundle(NSString* binaryPath);
//check if current OS version is supported
BOOL PI_isSupportedOS(void);
//get OS version
NSDictionary* PI_getOSVersion(void);
//enumerate all running processes
NSMutableArray* PI_enumerateProcesses(void);
//given a bundle
// find its executable
NSString* PI_findAppBinary(NSString* appPath);
//given a 'short' path or process name
// find the full path by scanning $PATH
NSString* PI_which(NSString* processName);
#endif
================================================
FILE: procInfo/Utilities.m
================================================
//
// File: Utilities.m
// Project: Proc Info
//
// Created by: Patrick Wardle
// Copyright: 2017 Objective-See
// License: Creative Commons Attribution-NonCommercial 4.0 International License
//
#import "Consts.h"
#import "Utilities.h"
#import <libproc.h>
#import <sys/sysctl.h>
//disable deprecated warnings
// use 'Gestalt' as this code may run on old OS X vers.
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
//get OS version
NSDictionary* PI_getOSVersion()
{
//os version info
NSMutableDictionary* osVersionInfo = nil;
//major v
SInt32 majorVersion = 0;
//minor v
SInt32 minorVersion = 0;
//bug fix v
SInt32 fixVersion = 0;
//alloc dictionary
osVersionInfo = [NSMutableDictionary dictionary];
//get major version
if(noErr != Gestalt(gestaltSystemVersionMajor, &majorVersion))
{
//unset
osVersionInfo = nil;
//bail
goto bail;
}
//get minor version
if(noErr != Gestalt(gestaltSystemVersionMinor, &minorVersion))
{
//unset
osVersionInfo = nil;
//bail
goto bail;
}
//get bug fix version
if(noErr != Gestalt(gestaltSystemVersionBugFix, &fixVersion))
{
//unset
osVersionInfo = nil;
//bail
goto bail;
}
//set major version
osVersionInfo[@"majorVersion"] = [NSNumber numberWithInteger:majorVersion];
//set minor version
osVersionInfo[@"minorVersion"] = [NSNumber numberWithInteger:minorVersion];
//set bug fix version
osVersionInfo[@"bugfixVersion"] = [NSNumber numberWithInteger:fixVersion];
bail:
return osVersionInfo;
}
//is current OS version supported?
// for now, just OS X 10.8+
BOOL PI_isSupportedOS()
{
//support flag
BOOL isSupported = NO;
//OS version info
NSDictionary* osVersionInfo = nil;
//get OS version info
osVersionInfo = PI_getOSVersion();
if(nil == osVersionInfo)
{
//bail
goto bail;
}
//gotta be OS X
if(OS_MAJOR_VERSION_X != [osVersionInfo[@"majorVersion"] intValue])
{
//bail
goto bail;
}
//gotta be OS X at least lion (10.8)
if([osVersionInfo[@"minorVersion"] intValue] < OS_MINOR_VERSION_LION)
{
//bail
goto bail;
}
//OS version is supported
isSupported = YES;
bail:
return isSupported;
}
//enumerate all running processes
NSMutableArray* PI_enumerateProcesses()
{
//# of procs
int numberOfProcesses = 0;
//array of pids
pid_t* pids = NULL;
//processes
NSMutableArray* processes = nil;
//alloc array
processes = [NSMutableArray array];
//get # of procs
numberOfProcesses = proc_listallpids(NULL, 0);
if(-1 == numberOfProcesses)
{
//bail
goto bail;
}
//alloc buffer for pids
pids = calloc(numberOfProcesses, sizeof(pid_t));
if(nil == pids)
{
//bail
goto bail;
}
//get list of pids
numberOfProcesses = proc_listallpids(pids, numberOfProcesses*sizeof(pid_t));
if(-1 == numberOfProcesses)
{
//bail
goto bail;
}
//iterate over all pids
// save pid into return array
for(int i = 0; i < numberOfProcesses; ++i)
{
//save each pid
if(0 != pids[i])
{
//save
[processes addObject:[NSNumber numberWithUnsignedInt:pids[i]]];
}
}
bail:
//free buffer
if(NULL != pids)
{
//free
free(pids);
//unset
pids = NULL;
}
return processes;
}
//given a path to binary
// parse it back up to find app's bundle
NSBundle* PI_findAppBundle(NSString* binaryPath)
{
//app's bundle
NSBundle* appBundle = nil;
//app's path
NSString* appPath = nil;
//first just try full path
appPath = binaryPath;
//try to find the app's bundle/info dictionary
do
{
//try to load app's bundle
appBundle = [NSBundle bundleWithPath:appPath];
//check for match
// binary path's match
if( (nil != appBundle) &&
(YES == [appBundle.executablePath isEqualToString:binaryPath]))
{
//all done
break;
}
//always unset bundle var since it's being returned
// and at this point, its not a match
appBundle = nil;
//remove last part
// will try this next
appPath = [appPath stringByDeletingLastPathComponent];
//scan until we get to root
// of course, loop will be exited if app info dictionary is found/loaded
} while( (nil != appPath) &&
(YES != [appPath isEqualToString:@"/"]) &&
(YES != [appPath isEqualToString:@""]) );
return appBundle;
}
//given a 'short' path or process name
// try find the full path by scanning $PATH
NSString* PI_which(NSString* processName)
{
//full path
NSString* fullPath = nil;
//get path
NSString* path = nil;
//tokenized paths
NSArray* pathComponents = nil;
//candidate file
NSString* candidateBinary = nil;
//get path
path = [[[NSProcessInfo processInfo]environment]objectForKey:@"PATH"];
//split on ':'
pathComponents = [path componentsSeparatedByString:@":"];
//iterate over all path components
// build candidate path and check if it exists
for(NSString* pathComponent in pathComponents)
{
//build candidate path
// current path component + process name
candidateBinary = [pathComponent stringByAppendingPathComponent:processName];
//check if it exists
if(YES == [[NSFileManager defaultManager] fileExistsAtPath:candidateBinary])
{
//check its executable
if(YES == [[NSFileManager defaultManager] isExecutableFileAtPath:candidateBinary])
{
//ok, happy now
fullPath = candidateBinary;
//stop processing
break;
}
}
}//for path components
return fullPath;
}
================================================
FILE: procInfo.xcodeproj/project.pbxproj
================================================
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buildRules = (
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================================================
FILE: procInfo.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
================================================
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<key>IDEDidComputeMac32BitWarning</key>
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</plist>
gitextract_1b4co5mo/
├── .gitattributes
├── .gitignore
├── LICENSE.md
├── README.md
├── lib/
│ ├── libprocInfo.a
│ └── procInfo.h
├── procInfo/
│ ├── Binary.m
│ ├── Consts.h
│ ├── Process.m
│ ├── ProcessMonitor.m
│ ├── Signing.h
│ ├── Signing.m
│ ├── Utilities.h
│ └── Utilities.m
└── procInfo.xcodeproj/
├── project.pbxproj
└── project.xcworkspace/
└── xcshareddata/
└── IDEWorkspaceChecks.plist
SYMBOL INDEX (1 symbols across 1 files)
FILE: lib/procInfo.h
type Signer (line 32) | enum Signer{None, Apple, AppStore, DevID, AdHoc}
Condensed preview — 16 files, each showing path, character count, and a content snippet. Download the .json file or copy for the full structured content (131K chars).
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"chars": 65,
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]
// ... and 1 more files (download for full content)
About this extraction
This page contains the full source code of the objective-see/ProcInfo GitHub repository, extracted and formatted as plain text for AI agents and large language models (LLMs). The extraction includes 16 files (122.3 KB), approximately 30.5k tokens, and a symbol index with 1 extracted functions, classes, methods, constants, and types. Use this with OpenClaw, Claude, ChatGPT, Cursor, Windsurf, or any other AI tool that accepts text input. You can copy the full output to your clipboard or download it as a .txt file.
Extracted by GitExtract — free GitHub repo to text converter for AI. Built by Nikandr Surkov.