Bootrom Dumper Utility

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Revision as of 16:14, 2 January 2012 by M2m (talk | contribs) (Info / Instructions)
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Credit

Pod2g

Geohot for limera1n

Info / Instructions

  • you need a mac or linux box to use it / build it
  • libusb > 1.0.8 required
  • execute it with root privileges (sudo ./bdu)
  • by default compatible only with A4 devices: (iPhone 4, iPod 4G, iPad, AppleTV 2)

It's possible to extend the compatibility to older devices as well (iPhone 3GS, iPod 3G) by changing:

  • the offset to the call of usb_wait_for_image in payload.S
0x7ef  @ A4
0x30E9 @ iPod 2G, old bootrom
0x8b7  @ iPod 3G, iPhone 3Gs new bootrom 
  • exploit offsets in bdu.c
// A4:
#define EXPLOIT_LR 0x8403BF9C
#define LOADADDR_SIZE 0x2C000
// iPod 2G:
#define EXPLOIT_LR 0x22000000
#define LOADADDR_SIZE 0x24000
// iPod 3G:
#define EXPLOIT_LR 0x84033F98
#define LOADADDR_SIZE 0x24000
// iPhone 3Gs new bootrom:
#define EXPLOIT_LR 0x84033FA4
#define LOADADDR_SIZE 0x24000

Links

Github