Decryptipsw.sh

出自iPhone.org.hk

<code>
#!/bin/sh
#v0.3
if [ $# -lt 1 ]
then
  echo "usage : $0 iPhone1,1_2.0_5A274d_Restore.ipsw"
  exit 0
else
  IPSWNAMES=$@
fi
DDONE=0
for IPSWNAME in $IPSWNAMES
do
if [ -f "$IPSWNAME" ]
then
PWD=`pwd`
rm -f Restore.plist
unzip -o $IPSWNAME Restore.plist > /dev/null 2>/dev/null
if [ -f Restore.plist ]; then
DEVICECLASS=`defaults read $PWD/Restore DeviceClass`
PRODUCTVERSION=`defaults read $PWD/Restore ProductVersion`
BUILDVERSION=`defaults read $PWD/Restore ProductBuildVersion`
RESTORERAMDISK=`defaults read $PWD/Restore RestoreRamDisks | awk '/User/ { split($0, line, "\""); printf("%s\n", line[2]); }'`
SYSTEMRESTOREIMAGE=`defaults read $PWD/Restore SystemRestoreImages | awk '/User/ { split($0, line, "\""); printf("%s\n", line[2]); }'`
unzip -o $IPSWNAME $RESTORERAMDISK  > /dev/null 2>/dev/null
FILEFORMAT=`hexdump -n4 -e '"%c%c%c%c\n"' $RESTORERAMDISK`
if [ "$FILEFORMAT" == "8900" ]
then
  DECRYPTKEY=`strings $RESTORERAMDISK | egrep "^[0-9a-fA-F]{72}\$"`
  if [ "$DECRYPTKEY" == "" ]; then
    RAMDISKLENGTH=`hexdump -s12 -n4 -e '"%d\n"' $RESTORERAMDISK`
    RAMDISKCOUNT=`echo $RAMDISKLENGTH / 512 | bc`
    dd if=$RESTORERAMDISK of=$DEVICECLASS$PRODUCTVERSION$BUILDVERSION.stripped.dmg bs=512 skip=4 count=$RAMDISKCOUNT conv=sync  > /dev/null 2>/dev/null
    openssl enc -d -in $DEVICECLASS$PRODUCTVERSION$BUILDVERSION.stripped.dmg -out $DEVICECLASS$PRODUCTVERSION$BUILDVERSION.ramdisk.dmg  -aes-128-cbc -K 188458A6D15034DFE386F23B61D43774 -iv 0  > /dev/null 2>/dev/null
    rm -f $DEVICECLASS$PRODUCTVERSION$BUILDVERSION.stripped.dmg
  else
    dd if=$RESTORERAMDISK of=$DEVICECLASS$PRODUCTVERSION$BUILDVERSION.ramdisk.dmg bs=512 skip=4 conv=sync  > /dev/null 2>/dev/null
  fi
else
  RAMDISKLENGTH=`hexdump -s12 -n4 -e '"%d\n"' $RESTORERAMDISK`
  RAMDISKCOUNT=`echo $RAMDISKLENGTH / 32 | bc`
  dd if=$RESTORERAMDISK of=$DEVICECLASS$PRODUCTVERSION$BUILDVERSION.ramdisk.dmg bs=32 skip=1 count=$RAMDISKCOUNT conv=sync  > /dev/null 2>/dev/null
fi
rm -f $RESTORERAMDISK
DECRYPTKEY=`strings $DEVICECLASS$PRODUCTVERSION$BUILDVERSION.ramdisk.dmg | egrep "^[0-9a-fA-F]{72}\$"`
if [ "$DECRYPTKEY" == "" ]; then
  echo "Decrypt failed : $IPSWNAME"
else
unzip -o $IPSWNAME $SYSTEMRESTOREIMAGE  > /dev/null 2>/dev/null
./vfdecrypt -i $SYSTEMRESTOREIMAGE -o $DEVICECLASS$PRODUCTVERSION$BUILDVERSION.decrypted.dmg -k $DECRYPTKEY  > /dev/null 2>/dev/null
rm -f $SYSTEMRESTOREIMAGE
echo 
md5 $IPSWNAME
echo "RAMDISK = $DEVICECLASS$PRODUCTVERSION$BUILDVERSION.ramdisk.dmg"
echo "FILESYSTEM = $DEVICECLASS$PRODUCTVERSION$BUILDVERSION.decrypted.dmg"
echo "DECRYPTKEY = $DECRYPTKEY"
DDONE=1
fi
else
  echo "Invalid ipsw file $IPSWNAME"
fi
else
echo "$IPSWNAME NOT FOUND"
fi
done
if [ "$DDONE" == "1" ]; then
  echo "Job Completed!!!"
fi
</code>