IOS - Jailbreak Erkennung

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Quellenangabe:
"Apps programmieren für iPhone und iPad - Das umfassende Handbuch" (link)
Autoren: Klaus M. Rodewig, Clemens Wagner


root partition rw

NSError *error = nil;
NSString *fstab = [NSString stringWithContentsOfFile:@"/etc/fstab" encoding:NSISOLatin1StringEncoding error:&error];
NSRange textRange;
NSString *substring = [NSString stringWithString:@" / hfs rw"];
textRange =[[fstab lowercaseString] rangeOfString:[substring lowercaseString]];

if(textRange.location != NSNotFound) {
	NSLog(@"[+] / writeable");
	forecast += 25;
} else {
	NSLog(@"[+] / not writeable");
}


locate Cydia

NSString *docsDir = @"/Applications/";
NSFileManager *localFileManager=[[NSFileManager alloc] init];
error =nil;
NSArray *dirEnum = [localFileManager contentsOfDirectoryAtPath:docsDir error:&error];

for(id object in dirEnum){
	if([object isEqual:@"Cydia.app"]){
		forecast += 25;
		NSLog(@"[+] Cydia found");
	}
}


write in /

if([localFileManager createDirectoryAtPath:@"/tmp/..." withIntermediateDirectories:NO attributes:nil error:&error]){
	forecast += 25;
	NSLog(@"[+] could write to /tmp");
	[localFileManager removeItemAtPath:@"/tmp/..." error:&error];
} else {
	NSLog(@"[+] error creating dir: %@", error);
}


find sshd

if([localFileManager fileExistsAtPath:@"/usr/sbin/sshd"]){
	forecast += 25;
	NSLog(@"[+] sshd found");
}


find apt

if([localFileManager fileExistsAtPath:@"/private/var/lib/apt"]){
	forecast += 25;
	NSLog(@"[+] apt found");
}


find bash

if([localFileManager fileExistsAtPath:@"/bin/bash"]){
	forecast += 25;
	NSLog(@"[+] bash found");
}