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Difference between revisions of "JerrySIM"
ChronicDev (talk | contribs) (→Leaked Source) |
MuscleNerd (talk | contribs) (I think the policy is not to copy and paste large chunks from other URLs) |
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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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Revision as of 05:14, 8 December 2008
This was the dev teams approach to unlocking Bootloader 4.6
Credit
The dev team/elite team.
Exploit
This relied on a buffer overflow in the STK.
Resources
the elite wiki's page on the topic
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
