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Penceramah : Aa Gym.

Penceramah :  Aa Gym.

Untuk yang ingin melihat atau mengedit register di Micr. Windows dari linux bisa menggunakan aplikasi chntpw. Chntpw sangat berguna jika tiba-tiba windows anda terserang virus/trojan yang merubah value key di register, contohnya windows tidak bisa login (value key userinit dirubah virus), folder options – control panel hilang, dan lainnya.

Linux yang saya gunakan Ubuntu 8.04.1 dengan kernel 2.6.24-21-generic (dapat juga menggunakan Linux Live CD).

• Install chntpw

root@thinkpad:/home/faiz# apt-get update
root@thinkpad:/home/faiz# apt-get install chntpw

…
The following NEW packages will be installed:
chntpw
0 upgraded, 1 newly installed, 0 to remove and 169 not upgraded.
Need to get 132kB of archives.
After this operation, 332kB of additional disk space will be used.
Get:1 http://id.archive.ubuntu.com hardy/multiverse chntpw 0.99.3-1 [132kB]
Fetched 132kB in 28s (4612B/s)
Selecting previously deselected package chntpw.
(Reading database … 127374 files and directories currently installed.)
Unpacking chntpw (from …/chntpw_0.99.3-1_i386.deb) …
Setting up chntpw (0.99.3-1) …

• Mount partisi windows

Partisi C:/ di /dev/sda1 dengan mount point di /media/disk
#mount /dev/sda1 /media/disk

• Edit Register

Tabel Register

Lokasi file Register Window di C://systemroot(windows)/system32/config/
Lokasi file Register User C://Documents and Settings/$User/NTUSER.dat

Misal :
Untuk mengaktifkan folder options yang terdisable, hapus key NoFolderOptions di Register.

Register: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

maka kita gunakan file ntuser.dat (/media/disk/Documents and Settings/faiz/ntuser.dat)

root@thinkpad:/home/faiz# cd /media/disk/Documents\ and\ Settings/faiz/
root@thinkpad:/media/disk/Documents and Settings/faiz# chntpw -e NTUSER.DAT

chntpw version 0.99.3 040818, (c) Petter N Hagen
Hive’s name (from header): <ts and Settings\faiz\ntuser.dat>
ROOT KEY at offset: 0×001020 * Subkey indexing type is: 666c <lf>
Page at 0×71c000 is not ‘hbin’, assuming file contains garbage at end
File size 7602176 [740000] bytes, containing 1157 pages (+ 1 headerpage)
Used for data: 117952/7344064 blocks/bytes, unused: 6588/69536 blocks/bytes.
Simple registry editor. ? for help.

[1020] > cd Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

untuk menghapus key gunakan perintah ‘dv’
[33e28] (…)\Windows\CurrentVersion\Policies\Explorer> dv NoFolderOptions

untuk melihat isi key ‘nya gunakan perintah ‘cat’
[33e28] (…)\Windows\CurrentVersion\Policies\Explorer>cat ClearRecentDocsOnExit

Value <ClearRecentDocsOnExit> of type REG_BINARY, data length 4 [0x4]
:00000 01 00 00 00 ….

untuk mengubah key gunakan perintah ‘ed’
[8d8420] (…)\Windows NT\CurrentVersion\Winlogon> ed Userinit

EDIT: <Userinit> of type REG_SZ with length 68 [0x44]
[ 0]: C:\WINDOWS\system32\userinit.exe,

Now enter new strings, one by one.
Enter nothing to keep old.
[ 0]: C:\WINDOWS\system32\userinit.exe,
-> D:\WINDOWS\system32\userinit.exe,
newkv->len: 68

[8d8420] (…)\Windows NT\CurrentVersion\Winlogon> cat Userinit

Value <Userinit> of type REG_SZ, data length 68 [0x44]
D:\WINDOWS\system32\userinit.exe,

Jika telah selesai ketikkan “q” dan konfirmasi “y” untuk menyimpan perubahan.

[33e28] (…)\Windows\CurrentVersion\Policies\Explorer> q

Hives that have changed:
# Name
0 <NTUSER.DAT>
Write hive files? (y/n) [n] : y
0 <NTUSER.DAT> – OK

Jangan lupa unmount partisi windows tadi kemudian restart.

Semoga Bermanfaat.

Ref : Internet

Olimpiade Fisika 2004

OSN Fisika 2007 SMA + Jawaban

OSN Fisika 2007 Tk. Kab. 

1. Install Driver USB Wireless

copy direktori driver windows ke folder dokumen

fz:/home/faiz/Documents/WinXP_2K_9X # ls
Dr71WU98.sys  DR71WU.CAT  Dr71WU.inf  Dr71WU.sys

fz:/home/faiz/Documents/WinXP_2K_9X # ndiswrapper -i  Dr71WU.inf

cek driver nya :

fz:/home/faiz # ndiswrapper -l
dr71wu : driver installed

copy file *.sys ke /etc/ndiswrapper/dr71wu/

fz:/home/faiz # cp -v *.sys /etc/ndiswrapper/dr71wu/
fz:/home/faiz # modprobe ndiswrapper
fz:/home/faiz # dmesg
…….
ndiswrapper version 1.47 loaded (smp=yes)
usb 2-1.4: reset full speed USB device using uhci_hcd and address 8
ndiswrapper: driver dr71wu (D-Link,12/21/2006, 1.02.00.0000) loaded
wlan0: ethernet device 00:21:91:80:38:0e using NDIS driver: dr71wu, version: 0×0, NDIS version: 0×500, vendor: ‘D-Link USB Wireless LAN Card’, 07D1:3C07.F.conf
wlan0: encryption modes supported: WEP; TKIP with WPA, WPA2, WPA2PSK; AES/CCMP with WPA, WPA2, WPA2PSK

fz:/home/faiz # ifconfig

eth0      Link encap:Ethernet  HWaddr 00:D0:59:BF:AE:C1
inet addr:192.168.0.1  Bcast:255.255.255.255  Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
RX packets:4643 errors:0 dropped:0 overruns:0 frame:0
TX packets:4393 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4534861 (4.3 Mb)  TX bytes:625649 (610.9 Kb)

lo        Link encap:Local Loopback
inet addr:127.0.0.1  Mask:255.0.0.0
UP LOOPBACK RUNNING  MTU:16436  Metric:1
RX packets:79 errors:0 dropped:0 overruns:0 frame:0
TX packets:79 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5647 (5.5 Kb)  TX bytes:5647 (5.5 Kb)

wlan0     Link encap:Ethernet  HWaddr 00:21:91:80:38:0E
UP BROADCAST MULTICAST  MTU:1500  Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

2. Setting Wireless Device (wlan0)

Scan akses point yang tersedia

fz:/home/faiz # iwlist wlan0 scanning
wlan0     Scan completed :
Cell 01 – Address: 00:1C:C5:08:8D:44
ESSID:”ihsan”
Protocol:IEEE 802.11g
Mode:Managed
Frequency:2.462 GHz (Channel 11)
Quality:53/100  Signal level:-62 dBm  Noise level:-96 dBm
Encryption key:off
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Extra:bcn_int=100
Extra:atim=0

untuk menyambungkan dengan akses point ESSID:”ihsan” ,ketik perintah :

fz:/home/faiz # iwconfig wlan0 essid ihsan
fz:/home/faiz # iwconfig
lo        no wireless extensions.

irda0     no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11g  ESSID:”ihsan”
Mode:Managed  Frequency:2.462 GHz  Access Point: 00:1C:C5:08:8D:44
Bit Rate=54 Mb/s   Tx-Power:20 dBm   Sensitivity=-121 dBm
RTS thr=2347 B   Fragment thr=2346 B
Encryption key:off
Power Management:off
Link Quality:53/100  Signal level:-62 dBm  Noise level:-96 dBm
Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
Tx excessive retries:0  Invalid misc:0   Missed beacon:0

Disable eth0 untuk meyakinkan rute yang dipakai wlan0

fz:/home/faiz # ifconfig eth0 down

fz:/home/faiz # ifconfig
lo        Link encap:Local Loopback
inet addr:127.0.0.1  Mask:255.0.0.0
UP LOOPBACK RUNNING  MTU:16436  Metric:1
RX packets:73 errors:0 dropped:0 overruns:0 frame:0
TX packets:73 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5347 (5.2 Kb)  TX bytes:5347 (5.2 Kb)

wlan0     Link encap:Ethernet  HWaddr 00:21:91:80:38:0E
UP BROADCAST MULTICAST  MTU:1500  Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

set IP Address wlan0, sesuaikan dengan kondisi akses point anda.

Akses point : 10.0.0.2 netmask 255.255.255.248

fz:/home/faiz # ifconfig wlan0 10.0.0.3 netmask 255.255.255.248 up

fz:/home/faiz # ping 10.0.0.2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=4.17 ms
64 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=5.16 ms
64 bytes from 10.0.0.2: icmp_seq=3 ttl=64 time=4.00 ms

set default route:
fz:/home/faiz # route add default gw 10.0.0.2

3. Untuk akses point yang menggunakan enkripsi WAP-PSK

WAP-PSK
generate phrase key nya  :

password akses point: ihsan123
essid : ihsan

fz:/home/faiz # wpa_passphrase ihsan ihsan123
network={
ssid=”ihsan”
#psk=”ihsan123″
psk=82e7eaddabd98aab3cbef2d73c2fab25b29ad4f80a6617475043793e8622df6c
}

lalu buat file  /etc/wpa_supplicant.conf

ctrl_interface=/var/run/wpa_supplicant
eapol_version=1
network={
ssid=”ihsan”
scan_ssid=1
priority=5
proto=WPA
key_mgmt=WPA-PSK
pairwise=CCMP TKIP
group=CCMP TKIP WEP104 WEP40
psk=82e7eaddabd98aab3cbef2d73c2fab25b29ad4f80a6617475043793e8622df6c
}

untuk menghubungkan dengan akses point ketik perintah:

fz:/home/faiz # wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf -D wext
Trying to associate with 00:1c:c5:08:8d:44 (SSID=’ihsan’ freq=2462 MHz)
Associated with 00:1c:c5:08:8d:44
WPA: Key negotiation completed with 00:1c:c5:08:8d:44 [PTK=CCMP GTK=TKIP]
CTRL-EVENT-CONNECTED – Connection to 00:1c:c5:08:8d:44 completed (auth) [id=0 id_str=]

lalu buka konsole yang baru untuk menjalankan perintah lainnya.

Disable eth0 untuk meyakinkan rute yang dipakai wlan0

fz:/home/faiz # ifconfig eth0 down

fz:/home/faiz # ifconfig
lo        Link encap:Local Loopback
inet addr:127.0.0.1  Mask:255.0.0.0
UP LOOPBACK RUNNING  MTU:16436  Metric:1
RX packets:73 errors:0 dropped:0 overruns:0 frame:0
TX packets:73 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5347 (5.2 Kb)  TX bytes:5347 (5.2 Kb)

wlan0     Link encap:Ethernet  HWaddr 00:21:91:80:38:0E
UP BROADCAST MULTICAST  MTU:1500  Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

fz:/home/faiz # ifconfig wlan0 10.0.0.3 netmask 255.255.255.248 up

fz:/home/faiz # ping 10.0.0.2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=15.1 ms
64 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=3.99 ms

)

fz:/home/faiz # iwconfig
lo        no wireless extensions.

irda0     no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11g  ESSID:”ihsan”
Mode:Managed  Frequency:2.462 GHz  Access Point: 00:1C:C5:08:8D:44
Bit Rate=54 Mb/s   Tx-Power:20 dBm   Sensitivity=-121 dBm
RTS thr=2347 B   Fragment thr=2346 B
Encryption key:AA16-6227-E506-BA82-3539-50DB-6F86-F3A4   Security mode:restricted
Power Management:off
Link Quality:59/100  Signal level:-58 dBm  Noise level:-96 dBm
Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
Tx excessive retries:0  Invalid misc:0   Missed beacon:0

set default route:
fz:/home/faiz # route add default gw 10.0.0.2

Cara ini memungkinkan untuk USB Wireless tipe lainnya karena driver yang dipakai driver untuk windows, terima kasih untuk ndiswrapper.
Mohon maaf kalau ada yang kurang + keliru ya, maklum masih pemula .
Semoga Bermanfaat.

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