某交易网APP设计不当导致数据库泄漏下载

该APP的安卓客户端，设计问题导致数据泄漏，导致全站数据泄漏最近对安卓的app逆向挺感兴趣，然后对网上一些app进行安全测试，此app初入手时，发现其内部有mysql的jdbc驱动，然后就想应该有问题，在更多的反编译过程中发现其数据库配置直接写在so库文件里面，明文保存，连接致数据库，发现可控全站数据库！其危害之严重！利用工具开始反编译，然后提权其dex，

将dex文件转为jar包之后，分析代码发现其数据库连接，但是并未发现具体连接代码，然后就想，可能连接存在于类库里面，然后找到libservice_jni.so这个文件，

.plt:00000BAC ;

.plt:00000BAC ; +-------------------------------------------------------------------------+

.plt:00000BAC ; |   This file has been generated by The Interactive Disassembler (IDA)    |

.plt:00000BAC ; |        Copyright (c) 2009 by Hex-Rays, <support@hex-rays.com>           |

.plt:00000BAC ; |                      License info: FA-EC7E-28A4-A5                      |

.plt:00000BAC ; |                              Licensed User                              |

.plt:00000BAC ; +-------------------------------------------------------------------------+

.plt:00000BAC ;

.plt:00000BAC ; Input MD5   : 0208C7DA39BFDBBC13FD435EA49F9C78

.plt:00000BAC

.plt:00000BAC ; ---------------------------------------------------------------------------

.plt:00000BAC ; File Name   : D:\apk\apktool1.5.2\apktool1.5.2\libservice_jni.so

.plt:00000BAC ; Format      : ELF (Shared object)

.plt:00000BAC ; Needed Library 'libstdc++.so'

.plt:00000BAC ; Needed Library 'libm.so'

.plt:00000BAC ; Needed Library 'libc.so'

.plt:00000BAC ; Needed Library 'libdl.so'

.plt:00000BAC ; Shared Name 'libservice_jni.so'

.plt:00000BAC ;

.plt:00000BAC ; EABI version: 5

.plt:00000BAC ;

.plt:00000BAC

.plt:00000BAC ; Processor       : ARM

.plt:00000BAC ; Target assembler: Generic assembler for ARM

.plt:00000BAC ; Byte sex        : Little endian

.plt:00000BAC

.plt:00000BAC ; ===========================================================================

.plt:00000BAC

.plt:00000BAC ; Segment type: Pure code

.plt:00000BAC                 AREA .plt, CODE, READWRITE

.plt:00000BAC                 ; ORG 0xBAC

.plt:00000BAC                 CODE32

.plt:00000BAC                 STR     LR, [SP,#-4]!

.plt:00000BB0                 LDR     LR, =(_GLOBAL_OFFSET_TABLE_ - 0xBBC)

.plt:00000BB4                 ADD     LR, PC, LR

.plt:00000BB8                 LDR     PC, [LR,#8]!

.plt:00000BB8 ; ---------------------------------------------------------------------------

.plt:00000BBC off_BBC         DCD _GLOBAL_OFFSET_TABLE_ - 0xBBC ; DATA XREF: .plt:00000BB0r

.plt:00000BC0 ; [0000000C BYTES: COLLAPSED FUNCTION __cxa_atexit. PRESS KEYPAD "+" TO EXPAND]

.plt:00000BCC ; [0000000C BYTES: COLLAPSED FUNCTION __cxa_finalize. PRESS KEYPAD "+" TO EXPAND]

.plt:00000BD8 ; [0000000C BYTES: COLLAPSED FUNCTION __gnu_Unwind_Find_exidx. PRESS KEYPAD "+" TO EXPAND]

.plt:00000BE4 ; [0000000C BYTES: COLLAPSED FUNCTION memcpy. PRESS KEYPAD "+" TO EXPAND]

.plt:00000BF0 ; [0000000C BYTES: COLLAPSED FUNCTION abort. PRESS KEYPAD "+" TO EXPAND]

.plt:00000BFC ; [0000000C BYTES: COLLAPSED FUNCTION __cxa_begin_cleanup. PRESS KEYPAD "+" TO EXPAND]

.plt:00000C08 ; [0000000C BYTES: COLLAPSED FUNCTION __cxa_type_match. PRESS KEYPAD "+" TO EXPAND]

.text:00000C14 ; ---------------------------------------------------------------------------

.text:00000C14 ; ===========================================================================

.text:00000C14

.text:00000C14 ; Segment type: Pure code

.text:00000C14                 AREA .text, CODE, READWRITE

.text:00000C14                 ; ORG 0xC14

.text:00000C14                 CODE32

.text:00000C14                 LDR     R2, =(unk_4000 - 0xC24)

.text:00000C18                 MOV     R1, #0

.text:00000C1C                 ADD     R2, PC, R2

.text:00000C20                 B       __cxa_atexit

.text:00000C20 ; ---------------------------------------------------------------------------

.text:00000C24 off_C24         DCD unk_4000 - 0xC24    ; DATA XREF: .text:00000C14r

.text:00000C28

.text:00000C28 ; =============== S U B R O U T I N E =======================================

.text:00000C28

.text:00000C28

.text:00000C28 sub_C28                                 ; DATA XREF: .fini_array:00003EB8o

.text:00000C28                 LDR     R0, =(unk_4000 - 0xC34)

.text:00000C2C                 ADD     R0, PC, R0

.text:00000C30                 B       __cxa_finalize

.text:00000C30 ; End of function sub_C28

.text:00000C30

.text:00000C30 ; ---------------------------------------------------------------------------

.text:00000C34 off_C34         DCD unk_4000 - 0xC34    ; DATA XREF: sub_C28r

.text:00000C38                 CODE16

.text:00000C38

.text:00000C38 ; =============== S U B R O U T I N E =======================================

.text:00000C38

.text:00000C38

.text:00000C38                 EXPORT Java_com_fly186_service_jni_JNI_getUrl

.text:00000C38 Java_com_fly186_service_jni_JNI_getUrl

.text:00000C38                 PUSH    {R3,LR}

.text:00000C3A                 LDR     R2, [R0]

.text:00000C3C                 LDR     R1, =(aJdbcMysql59_63 - 0xC46)

.text:00000C3E                 MOVS    R3, 0x29C

.text:00000C42                 ADD     R1, PC          ; "jdbc:mysql://不告诉你/myxdfw"

.text:00000C44                 LDR     R3, [R2,R3]

.text:00000C46                 BLX     R3

.text:00000C48                 POP     {R3,PC}

.text:00000C48 ; End of function Java_com_fly186_service_jni_JNI_getUrl

.text:00000C48

.text:00000C48 ; ---------------------------------------------------------------------------

.text:00000C4A                 ALIGN 4

.text:00000C4C off_C4C         DCD aJdbcMysql59_63 - 0xC46

.text:00000C4C                                         ; DATA XREF: Java_com_fly186_service_jni_JNI_getUrl+4r

.text:00000C4C                                         ; "jdbc:mysql://不告诉你/myxdfw"

.text:00000C50

.text:00000C50 ; =============== S U B R O U T I N E =======================================

.text:00000C50

.text:00000C50

.text:00000C50                 EXPORT Java_com_fly186_service_jni_JNI_getName

.text:00000C50 Java_com_fly186_service_jni_JNI_getName

.text:00000C50                 PUSH    {R3,LR}

.text:00000C52                 LDR     R2, [R0]

.text:00000C54                 LDR     R1, =(aMyxdfw - 0xC5E)

.text:00000C56                 MOVS    R3, 0x29C

.text:00000C5A                 ADD     R1, PC          ; "myxdfw"

.text:00000C5C                 LDR     R3, [R2,R3]

.text:00000C5E                 BLX     R3

.text:00000C60                 POP     {R3,PC}

.text:00000C60 ; End of function Java_com_fly186_service_jni_JNI_getName

.text:00000C60

.text:00000C60 ; ---------------------------------------------------------------------------

.text:00000C62                 ALIGN 4

.text:00000C64 off_C64         DCD aMyxdfw - 0xC5E     ; DATA XREF: Java_com_fly186_service_jni_JNI_getName+4r

.text:00000C64                                         ; "myxdfw"

.text:00000C68

.text:00000C68 ; =============== S U B R O U T I N E =======================================

.text:00000C68

.text:00000C68

.text:00000C68                 EXPORT Java_com_fly186_service_jni_JNI_getPassword

.text:00000C68 Java_com_fly186_service_jni_JNI_getPassword

.text:00000C68                 PUSH    {R3,LR}

.text:00000C6A                 LDR     R2, [R0]

.text:00000C6C                 LDR     R1, =(a101627xdfw - 0xC76)

.text:00000C6E                 MOVS    R3, 0x29C

.text:00000C72                 ADD     R1, PC          ; "不告诉你"

.text:00000C74                 LDR     R3, [R2,R3]

.text:00000C76                 BLX     R3

.text:00000C78                 POP     {R3,PC}

.text:00000C78 ; End of function Java_com_fly186_service_jni_JNI_getPassword

.text:00000C78

.text:00000C78 ; ---------------------------------------------------------------------------

.text:00000C7A                 ALIGN 4

.text:00000C7C off_C7C         DCD a101627xdfw - 0xC76 ; DATA XREF: Java_com_fly186_service_jni_JNI_getPassword+4r

.text:00000C7C                                         ; "不告诉你"

.text:00000C80                 CODE32

.text:00000C80